./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8d51b-9c62-4e30-86a7-ace571f437bb/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8d51b-9c62-4e30-86a7-ace571f437bb/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8d51b-9c62-4e30-86a7-ace571f437bb/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8d51b-9c62-4e30-86a7-ace571f437bb/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8d51b-9c62-4e30-86a7-ace571f437bb/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8d51b-9c62-4e30-86a7-ace571f437bb/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 09d600be73ca435c113b9c0e8e087d96a910d62ea2126c235d6963c00b3a91c2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:29:12,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:29:12,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:29:12,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:29:12,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:29:12,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:29:12,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:29:12,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:29:12,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:29:12,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:29:12,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:29:12,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:29:12,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:29:12,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:29:12,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:29:12,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:29:12,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:29:12,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:29:12,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:29:12,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:29:12,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:29:12,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:29:12,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:29:12,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:29:12,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:29:12,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:29:12,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:29:12,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:29:12,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:29:12,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:29:12,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:29:12,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:29:12,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:29:12,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:29:12,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:29:12,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:29:12,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:29:12,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:29:12,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:29:12,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:29:12,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:29:12,173 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8d51b-9c62-4e30-86a7-ace571f437bb/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:29:12,204 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:29:12,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:29:12,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:29:12,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:29:12,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:29:12,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:29:12,206 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:29:12,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:29:12,207 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:29:12,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:29:12,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:29:12,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:29:12,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:29:12,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:29:12,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:29:12,208 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:29:12,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:29:12,208 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:29:12,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:29:12,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:29:12,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:29:12,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:29:12,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:29:12,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:29:12,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:29:12,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:29:12,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:29:12,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:29:12,211 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:29:12,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:29:12,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:29:12,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:29:12,212 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_21c8d51b-9c62-4e30-86a7-ace571f437bb/bin/uautomizer-w2VwFs6gM0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8d51b-9c62-4e30-86a7-ace571f437bb/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09d600be73ca435c113b9c0e8e087d96a910d62ea2126c235d6963c00b3a91c2 [2021-11-22 15:29:12,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:29:12,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:29:12,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:29:12,558 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:29:12,559 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:29:12,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8d51b-9c62-4e30-86a7-ace571f437bb/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c [2021-11-22 15:29:12,641 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8d51b-9c62-4e30-86a7-ace571f437bb/bin/uautomizer-w2VwFs6gM0/data/f7d30ebf4/5145d29c60d2409bb17a1e46479404d6/FLAG1b3e870c9 [2021-11-22 15:29:13,432 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:29:13,432 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8d51b-9c62-4e30-86a7-ace571f437bb/sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c [2021-11-22 15:29:13,469 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8d51b-9c62-4e30-86a7-ace571f437bb/bin/uautomizer-w2VwFs6gM0/data/f7d30ebf4/5145d29c60d2409bb17a1e46479404d6/FLAG1b3e870c9 [2021-11-22 15:29:13,562 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8d51b-9c62-4e30-86a7-ace571f437bb/bin/uautomizer-w2VwFs6gM0/data/f7d30ebf4/5145d29c60d2409bb17a1e46479404d6 [2021-11-22 15:29:13,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:29:13,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:29:13,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:29:13,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:29:13,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:29:13,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:29:13" (1/1) ... [2021-11-22 15:29:13,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c123a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:13, skipping insertion in model container [2021-11-22 15:29:13,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:29:13" (1/1) ... [2021-11-22 15:29:13,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:29:13,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:29:14,139 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_21c8d51b-9c62-4e30-86a7-ace571f437bb/sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c[27470,27483] [2021-11-22 15:29:14,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:29:14,423 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:29:14,475 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_21c8d51b-9c62-4e30-86a7-ace571f437bb/sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c[27470,27483] [2021-11-22 15:29:14,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:29:14,595 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:29:14,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14 WrapperNode [2021-11-22 15:29:14,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:29:14,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:29:14,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:29:14,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:29:14,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:14,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:14,889 INFO L137 Inliner]: procedures = 90, calls = 333, calls flagged for inlining = 186, calls inlined = 270, statements flattened = 8613 [2021-11-22 15:29:14,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:29:14,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:29:14,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:29:14,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:29:14,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:14,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:14,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:14,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:15,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:15,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:15,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:15,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:29:15,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:29:15,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:29:15,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:29:15,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:15,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:29:15,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8d51b-9c62-4e30-86a7-ace571f437bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:15,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8d51b-9c62-4e30-86a7-ace571f437bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:15,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8d51b-9c62-4e30-86a7-ace571f437bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:29:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:29:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:29:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:29:15,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:29:15,511 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:29:15,513 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:29:19,589 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:29:19,633 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:29:19,634 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 15:29:19,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:29:19 BoogieIcfgContainer [2021-11-22 15:29:19,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:29:19,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:29:19,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:29:19,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:29:19,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:29:13" (1/3) ... [2021-11-22 15:29:19,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f15e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:29:19, skipping insertion in model container [2021-11-22 15:29:19,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (2/3) ... [2021-11-22 15:29:19,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f15e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:29:19, skipping insertion in model container [2021-11-22 15:29:19,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:29:19" (3/3) ... [2021-11-22 15:29:19,653 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product17.cil.c [2021-11-22 15:29:19,659 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:29:19,659 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-22 15:29:19,736 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:29:19,749 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:29:19,749 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-22 15:29:19,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 2467 states, 2461 states have (on average 1.8707842340511986) internal successors, (4604), 2466 states have internal predecessors, (4604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:19,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-22 15:29:19,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:19,890 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] [2021-11-22 15:29:19,890 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:19,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:19,902 INFO L85 PathProgramCache]: Analyzing trace with hash -942263428, now seen corresponding path program 1 times [2021-11-22 15:29:19,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:19,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288838508] [2021-11-22 15:29:19,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:19,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:20,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:20,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288838508] [2021-11-22 15:29:20,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288838508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:20,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:20,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:29:20,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059754436] [2021-11-22 15:29:20,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:20,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:29:20,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:20,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:29:20,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:29:20,438 INFO L87 Difference]: Start difference. First operand has 2467 states, 2461 states have (on average 1.8707842340511986) internal successors, (4604), 2466 states have internal predecessors, (4604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:20,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:20,881 INFO L93 Difference]: Finished difference Result 7306 states and 13652 transitions. [2021-11-22 15:29:20,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:29:20,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-22 15:29:20,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:20,951 INFO L225 Difference]: With dead ends: 7306 [2021-11-22 15:29:20,953 INFO L226 Difference]: Without dead ends: 4841 [2021-11-22 15:29:20,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:29:20,976 INFO L933 BasicCegarLoop]: 9043 mSDtfsCounter, 4564 mSDsluCounter, 4471 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4564 SdHoareTripleChecker+Valid, 13514 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:20,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4564 Valid, 13514 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:29:21,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4841 states. [2021-11-22 15:29:21,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4841 to 2456. [2021-11-22 15:29:21,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 2451 states have (on average 1.8682170542635659) internal successors, (4579), 2455 states have internal predecessors, (4579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:21,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 4579 transitions. [2021-11-22 15:29:21,307 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 4579 transitions. Word has length 58 [2021-11-22 15:29:21,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:21,307 INFO L470 AbstractCegarLoop]: Abstraction has 2456 states and 4579 transitions. [2021-11-22 15:29:21,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:21,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 4579 transitions. [2021-11-22 15:29:21,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-22 15:29:21,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:21,319 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] [2021-11-22 15:29:21,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:29:21,320 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:21,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:21,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2067443521, now seen corresponding path program 1 times [2021-11-22 15:29:21,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:21,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845791929] [2021-11-22 15:29:21,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:21,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:21,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:21,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845791929] [2021-11-22 15:29:21,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845791929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:21,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:21,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:21,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377807537] [2021-11-22 15:29:21,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:21,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:29:21,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:21,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:29:21,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:29:21,477 INFO L87 Difference]: Start difference. First operand 2456 states and 4579 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:22,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:22,205 INFO L93 Difference]: Finished difference Result 7247 states and 13530 transitions. [2021-11-22 15:29:22,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:29:22,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-22 15:29:22,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:22,245 INFO L225 Difference]: With dead ends: 7247 [2021-11-22 15:29:22,245 INFO L226 Difference]: Without dead ends: 4841 [2021-11-22 15:29:22,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:22,258 INFO L933 BasicCegarLoop]: 8850 mSDtfsCounter, 9100 mSDsluCounter, 4412 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9100 SdHoareTripleChecker+Valid, 13262 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:22,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9100 Valid, 13262 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:29:22,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4841 states. [2021-11-22 15:29:22,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4841 to 2456. [2021-11-22 15:29:22,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 2451 states have (on average 1.8641370869033047) internal successors, (4569), 2455 states have internal predecessors, (4569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:22,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 4569 transitions. [2021-11-22 15:29:22,381 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 4569 transitions. Word has length 65 [2021-11-22 15:29:22,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:22,383 INFO L470 AbstractCegarLoop]: Abstraction has 2456 states and 4569 transitions. [2021-11-22 15:29:22,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:22,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 4569 transitions. [2021-11-22 15:29:22,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 15:29:22,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:22,388 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] [2021-11-22 15:29:22,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:29:22,389 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:22,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:22,393 INFO L85 PathProgramCache]: Analyzing trace with hash 441472017, now seen corresponding path program 1 times [2021-11-22 15:29:22,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:22,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563360534] [2021-11-22 15:29:22,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:22,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:22,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:22,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:22,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563360534] [2021-11-22 15:29:22,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563360534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:22,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:22,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:22,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733691401] [2021-11-22 15:29:22,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:22,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:29:22,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:22,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:29:22,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:29:22,503 INFO L87 Difference]: Start difference. First operand 2456 states and 4569 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:23,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:23,144 INFO L93 Difference]: Finished difference Result 7247 states and 13510 transitions. [2021-11-22 15:29:23,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:29:23,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-22 15:29:23,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:23,178 INFO L225 Difference]: With dead ends: 7247 [2021-11-22 15:29:23,178 INFO L226 Difference]: Without dead ends: 4841 [2021-11-22 15:29:23,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:23,184 INFO L933 BasicCegarLoop]: 8850 mSDtfsCounter, 9078 mSDsluCounter, 4412 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9078 SdHoareTripleChecker+Valid, 13262 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:23,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9078 Valid, 13262 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:29:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4841 states. [2021-11-22 15:29:23,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4841 to 2456. [2021-11-22 15:29:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 2451 states have (on average 1.8600571195430438) internal successors, (4559), 2455 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:23,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 4559 transitions. [2021-11-22 15:29:23,314 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 4559 transitions. Word has length 67 [2021-11-22 15:29:23,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:23,315 INFO L470 AbstractCegarLoop]: Abstraction has 2456 states and 4559 transitions. [2021-11-22 15:29:23,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:23,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 4559 transitions. [2021-11-22 15:29:23,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-22 15:29:23,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:23,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:23,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:29:23,320 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:23,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:23,320 INFO L85 PathProgramCache]: Analyzing trace with hash -331932255, now seen corresponding path program 1 times [2021-11-22 15:29:23,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:23,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863184234] [2021-11-22 15:29:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:23,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:23,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:23,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:23,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863184234] [2021-11-22 15:29:23,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863184234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:23,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:23,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:23,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761522474] [2021-11-22 15:29:23,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:23,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:29:23,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:23,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:29:23,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:29:23,392 INFO L87 Difference]: Start difference. First operand 2456 states and 4559 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:24,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:24,167 INFO L93 Difference]: Finished difference Result 11945 states and 22262 transitions. [2021-11-22 15:29:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:29:24,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-22 15:29:24,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:24,259 INFO L225 Difference]: With dead ends: 11945 [2021-11-22 15:29:24,259 INFO L226 Difference]: Without dead ends: 9539 [2021-11-22 15:29:24,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:24,275 INFO L933 BasicCegarLoop]: 17662 mSDtfsCounter, 9036 mSDsluCounter, 17610 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9036 SdHoareTripleChecker+Valid, 35272 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:24,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9036 Valid, 35272 Invalid, 201 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:29:24,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9539 states. [2021-11-22 15:29:24,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9539 to 2456. [2021-11-22 15:29:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 2451 states have (on average 1.8580171358629132) internal successors, (4554), 2455 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:24,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 4554 transitions. [2021-11-22 15:29:24,499 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 4554 transitions. Word has length 69 [2021-11-22 15:29:24,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:24,502 INFO L470 AbstractCegarLoop]: Abstraction has 2456 states and 4554 transitions. [2021-11-22 15:29:24,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:24,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 4554 transitions. [2021-11-22 15:29:24,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-22 15:29:24,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:24,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:24,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:29:24,506 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:24,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:24,507 INFO L85 PathProgramCache]: Analyzing trace with hash 872199267, now seen corresponding path program 1 times [2021-11-22 15:29:24,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:24,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881430557] [2021-11-22 15:29:24,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:24,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:24,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:24,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:24,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881430557] [2021-11-22 15:29:24,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881430557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:24,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:24,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:24,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323126173] [2021-11-22 15:29:24,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:24,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:29:24,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:24,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:29:24,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:29:24,613 INFO L87 Difference]: Start difference. First operand 2456 states and 4554 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:25,140 INFO L93 Difference]: Finished difference Result 7247 states and 13485 transitions. [2021-11-22 15:29:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:29:25,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-22 15:29:25,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:25,162 INFO L225 Difference]: With dead ends: 7247 [2021-11-22 15:29:25,162 INFO L226 Difference]: Without dead ends: 4841 [2021-11-22 15:29:25,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:25,170 INFO L933 BasicCegarLoop]: 8850 mSDtfsCounter, 9044 mSDsluCounter, 4412 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9044 SdHoareTripleChecker+Valid, 13262 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:25,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9044 Valid, 13262 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:29:25,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4841 states. [2021-11-22 15:29:25,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4841 to 2456. [2021-11-22 15:29:25,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 2451 states have (on average 1.853937168502652) internal successors, (4544), 2455 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:25,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 4544 transitions. [2021-11-22 15:29:25,343 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 4544 transitions. Word has length 70 [2021-11-22 15:29:25,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:25,344 INFO L470 AbstractCegarLoop]: Abstraction has 2456 states and 4544 transitions. [2021-11-22 15:29:25,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 4544 transitions. [2021-11-22 15:29:25,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-22 15:29:25,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:25,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:25,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:29:25,349 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:25,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:25,349 INFO L85 PathProgramCache]: Analyzing trace with hash -75059708, now seen corresponding path program 1 times [2021-11-22 15:29:25,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:25,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898590479] [2021-11-22 15:29:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:25,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:25,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:25,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898590479] [2021-11-22 15:29:25,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898590479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:25,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:25,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:25,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629320574] [2021-11-22 15:29:25,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:25,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:29:25,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:25,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:29:25,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:29:25,431 INFO L87 Difference]: Start difference. First operand 2456 states and 4544 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:26,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:26,171 INFO L93 Difference]: Finished difference Result 9623 states and 17895 transitions. [2021-11-22 15:29:26,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:29:26,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-22 15:29:26,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:26,257 INFO L225 Difference]: With dead ends: 9623 [2021-11-22 15:29:26,257 INFO L226 Difference]: Without dead ends: 7223 [2021-11-22 15:29:26,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:26,263 INFO L933 BasicCegarLoop]: 13335 mSDtfsCounter, 9010 mSDsluCounter, 13352 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9010 SdHoareTripleChecker+Valid, 26687 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:26,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9010 Valid, 26687 Invalid, 104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:29:26,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7223 states. [2021-11-22 15:29:26,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7223 to 2460. [2021-11-22 15:29:26,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 2455 states have (on average 1.8525458248472506) internal successors, (4548), 2459 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:26,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 4548 transitions. [2021-11-22 15:29:26,425 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 4548 transitions. Word has length 70 [2021-11-22 15:29:26,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:26,425 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 4548 transitions. [2021-11-22 15:29:26,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:26,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 4548 transitions. [2021-11-22 15:29:26,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-22 15:29:26,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:26,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:26,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:29:26,429 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:26,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:26,430 INFO L85 PathProgramCache]: Analyzing trace with hash 916556454, now seen corresponding path program 1 times [2021-11-22 15:29:26,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:26,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732054815] [2021-11-22 15:29:26,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:26,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:26,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:26,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732054815] [2021-11-22 15:29:26,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732054815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:26,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:26,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:26,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9490796] [2021-11-22 15:29:26,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:26,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:29:26,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:26,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:29:26,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:29:26,510 INFO L87 Difference]: Start difference. First operand 2460 states and 4548 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:26,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:26,989 INFO L93 Difference]: Finished difference Result 7257 states and 13475 transitions. [2021-11-22 15:29:26,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:29:26,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-22 15:29:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:27,004 INFO L225 Difference]: With dead ends: 7257 [2021-11-22 15:29:27,005 INFO L226 Difference]: Without dead ends: 4847 [2021-11-22 15:29:27,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:27,012 INFO L933 BasicCegarLoop]: 8850 mSDtfsCounter, 9022 mSDsluCounter, 4412 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9022 SdHoareTripleChecker+Valid, 13262 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:27,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9022 Valid, 13262 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:29:27,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4847 states. [2021-11-22 15:29:27,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4847 to 2460. [2021-11-22 15:29:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 2455 states have (on average 1.8484725050916497) internal successors, (4538), 2459 states have internal predecessors, (4538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:27,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 4538 transitions. [2021-11-22 15:29:27,185 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 4538 transitions. Word has length 71 [2021-11-22 15:29:27,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:27,188 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 4538 transitions. [2021-11-22 15:29:27,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:27,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 4538 transitions. [2021-11-22 15:29:27,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-22 15:29:27,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:27,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:27,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:29:27,197 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:27,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:27,199 INFO L85 PathProgramCache]: Analyzing trace with hash -479464797, now seen corresponding path program 1 times [2021-11-22 15:29:27,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:27,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521790377] [2021-11-22 15:29:27,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:27,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:27,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:27,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:27,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521790377] [2021-11-22 15:29:27,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521790377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:27,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:27,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:27,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518555133] [2021-11-22 15:29:27,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:27,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:29:27,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:27,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:29:27,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:29:27,276 INFO L87 Difference]: Start difference. First operand 2460 states and 4538 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:27,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:27,896 INFO L93 Difference]: Finished difference Result 9630 states and 17880 transitions. [2021-11-22 15:29:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:29:27,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-22 15:29:27,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:27,918 INFO L225 Difference]: With dead ends: 9630 [2021-11-22 15:29:27,918 INFO L226 Difference]: Without dead ends: 7228 [2021-11-22 15:29:27,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:27,924 INFO L933 BasicCegarLoop]: 4502 mSDtfsCounter, 13411 mSDsluCounter, 13337 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13411 SdHoareTripleChecker+Valid, 17839 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:27,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13411 Valid, 17839 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:29:27,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7228 states. [2021-11-22 15:29:28,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7228 to 2466. [2021-11-22 15:29:28,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2461 states have (on average 1.8464039008533117) internal successors, (4544), 2465 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:28,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4544 transitions. [2021-11-22 15:29:28,102 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4544 transitions. Word has length 71 [2021-11-22 15:29:28,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:28,104 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4544 transitions. [2021-11-22 15:29:28,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:28,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4544 transitions. [2021-11-22 15:29:28,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-22 15:29:28,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:28,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:28,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:29:28,108 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:28,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:28,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1634028810, now seen corresponding path program 1 times [2021-11-22 15:29:28,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:28,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931549901] [2021-11-22 15:29:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:28,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:28,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:28,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931549901] [2021-11-22 15:29:28,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931549901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:28,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:28,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:29:28,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935805911] [2021-11-22 15:29:28,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:28,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:29:28,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:28,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:29:28,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:29:28,193 INFO L87 Difference]: Start difference. First operand 2466 states and 4544 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:28,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:28,527 INFO L93 Difference]: Finished difference Result 7236 states and 13419 transitions. [2021-11-22 15:29:28,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:29:28,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-22 15:29:28,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:28,542 INFO L225 Difference]: With dead ends: 7236 [2021-11-22 15:29:28,542 INFO L226 Difference]: Without dead ends: 4820 [2021-11-22 15:29:28,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:29:28,550 INFO L933 BasicCegarLoop]: 8885 mSDtfsCounter, 4457 mSDsluCounter, 4410 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4457 SdHoareTripleChecker+Valid, 13295 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:28,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4457 Valid, 13295 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:29:28,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4820 states. [2021-11-22 15:29:28,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4820 to 2466. [2021-11-22 15:29:28,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2461 states have (on average 1.8443722064201544) internal successors, (4539), 2465 states have internal predecessors, (4539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4539 transitions. [2021-11-22 15:29:28,690 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4539 transitions. Word has length 72 [2021-11-22 15:29:28,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:28,690 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4539 transitions. [2021-11-22 15:29:28,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:28,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4539 transitions. [2021-11-22 15:29:28,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-22 15:29:28,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:28,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:28,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:29:28,694 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:28,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:28,695 INFO L85 PathProgramCache]: Analyzing trace with hash -632352376, now seen corresponding path program 1 times [2021-11-22 15:29:28,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:28,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826210486] [2021-11-22 15:29:28,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:28,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:28,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:28,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826210486] [2021-11-22 15:29:28,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826210486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:28,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:28,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:29:28,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824003435] [2021-11-22 15:29:28,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:28,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:29:28,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:28,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:29:28,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:29:28,775 INFO L87 Difference]: Start difference. First operand 2466 states and 4539 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:28,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:28,930 INFO L93 Difference]: Finished difference Result 4856 states and 8981 transitions. [2021-11-22 15:29:28,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:29:28,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-22 15:29:28,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:28,937 INFO L225 Difference]: With dead ends: 4856 [2021-11-22 15:29:28,938 INFO L226 Difference]: Without dead ends: 2463 [2021-11-22 15:29:28,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:29:28,943 INFO L933 BasicCegarLoop]: 4517 mSDtfsCounter, 4440 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4440 SdHoareTripleChecker+Valid, 4589 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:28,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4440 Valid, 4589 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:29:28,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2021-11-22 15:29:29,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 2463. [2021-11-22 15:29:29,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2463 states, 2458 states have (on average 1.8429617575264443) internal successors, (4530), 2462 states have internal predecessors, (4530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2463 states to 2463 states and 4530 transitions. [2021-11-22 15:29:29,098 INFO L78 Accepts]: Start accepts. Automaton has 2463 states and 4530 transitions. Word has length 72 [2021-11-22 15:29:29,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:29,099 INFO L470 AbstractCegarLoop]: Abstraction has 2463 states and 4530 transitions. [2021-11-22 15:29:29,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:29,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2463 states and 4530 transitions. [2021-11-22 15:29:29,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-22 15:29:29,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:29,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:29,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:29:29,106 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:29,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:29,106 INFO L85 PathProgramCache]: Analyzing trace with hash 448451501, now seen corresponding path program 1 times [2021-11-22 15:29:29,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:29,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966097556] [2021-11-22 15:29:29,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:29,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:29,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:29,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966097556] [2021-11-22 15:29:29,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966097556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:29,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:29,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:29:29,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540139545] [2021-11-22 15:29:29,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:29,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:29:29,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:29,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:29:29,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:29,199 INFO L87 Difference]: Start difference. First operand 2463 states and 4530 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:29,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:29,437 INFO L93 Difference]: Finished difference Result 4861 states and 8985 transitions. [2021-11-22 15:29:29,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:29:29,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-22 15:29:29,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:29,444 INFO L225 Difference]: With dead ends: 4861 [2021-11-22 15:29:29,444 INFO L226 Difference]: Without dead ends: 2447 [2021-11-22 15:29:29,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:29:29,449 INFO L933 BasicCegarLoop]: 4477 mSDtfsCounter, 13398 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13398 SdHoareTripleChecker+Valid, 4556 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:29,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13398 Valid, 4556 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:29:29,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2021-11-22 15:29:29,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 2447. [2021-11-22 15:29:29,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 2442 states have (on average 1.846027846027846) internal successors, (4508), 2446 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:29,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 4508 transitions. [2021-11-22 15:29:29,573 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 4508 transitions. Word has length 74 [2021-11-22 15:29:29,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:29,573 INFO L470 AbstractCegarLoop]: Abstraction has 2447 states and 4508 transitions. [2021-11-22 15:29:29,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:29,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 4508 transitions. [2021-11-22 15:29:29,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-22 15:29:29,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:29,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:29,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:29:29,577 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:29,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:29,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1358107404, now seen corresponding path program 1 times [2021-11-22 15:29:29,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:29,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376061751] [2021-11-22 15:29:29,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:29,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:29,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:29,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:29,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376061751] [2021-11-22 15:29:29,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376061751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:29,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:29,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:29,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771527394] [2021-11-22 15:29:29,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:29,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:29:29,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:29,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:29:29,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:29:29,656 INFO L87 Difference]: Start difference. First operand 2447 states and 4508 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:30,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:30,208 INFO L93 Difference]: Finished difference Result 9597 states and 17803 transitions. [2021-11-22 15:29:30,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:29:30,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-22 15:29:30,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:30,232 INFO L225 Difference]: With dead ends: 9597 [2021-11-22 15:29:30,232 INFO L226 Difference]: Without dead ends: 7203 [2021-11-22 15:29:30,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:30,239 INFO L933 BasicCegarLoop]: 4476 mSDtfsCounter, 13335 mSDsluCounter, 13294 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13335 SdHoareTripleChecker+Valid, 17770 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:30,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13335 Valid, 17770 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:29:30,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7203 states. [2021-11-22 15:29:30,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7203 to 2455. [2021-11-22 15:29:30,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2450 states have (on average 1.8432653061224489) internal successors, (4516), 2454 states have internal predecessors, (4516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:30,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4516 transitions. [2021-11-22 15:29:30,513 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4516 transitions. Word has length 76 [2021-11-22 15:29:30,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:30,514 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 4516 transitions. [2021-11-22 15:29:30,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:30,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4516 transitions. [2021-11-22 15:29:30,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 15:29:30,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:30,519 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] [2021-11-22 15:29:30,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:29:30,519 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:30,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:30,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1082332427, now seen corresponding path program 1 times [2021-11-22 15:29:30,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:30,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231660850] [2021-11-22 15:29:30,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:30,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:30,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:30,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231660850] [2021-11-22 15:29:30,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231660850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:30,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:30,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:30,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136943583] [2021-11-22 15:29:30,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:30,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:29:30,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:30,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:29:30,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:29:30,578 INFO L87 Difference]: Start difference. First operand 2455 states and 4516 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:31,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:31,258 INFO L93 Difference]: Finished difference Result 9610 states and 17814 transitions. [2021-11-22 15:29:31,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:29:31,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-22 15:29:31,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:31,285 INFO L225 Difference]: With dead ends: 9610 [2021-11-22 15:29:31,285 INFO L226 Difference]: Without dead ends: 7212 [2021-11-22 15:29:31,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:31,293 INFO L933 BasicCegarLoop]: 4480 mSDtfsCounter, 13325 mSDsluCounter, 13300 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13325 SdHoareTripleChecker+Valid, 17780 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:31,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13325 Valid, 17780 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:29:31,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7212 states. [2021-11-22 15:29:31,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7212 to 2465. [2021-11-22 15:29:31,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2465 states, 2460 states have (on average 1.8398373983739837) internal successors, (4526), 2464 states have internal predecessors, (4526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 4526 transitions. [2021-11-22 15:29:31,538 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 4526 transitions. Word has length 77 [2021-11-22 15:29:31,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:31,539 INFO L470 AbstractCegarLoop]: Abstraction has 2465 states and 4526 transitions. [2021-11-22 15:29:31,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 4526 transitions. [2021-11-22 15:29:31,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-22 15:29:31,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:31,543 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] [2021-11-22 15:29:31,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:29:31,544 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:31,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:31,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1093816449, now seen corresponding path program 1 times [2021-11-22 15:29:31,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:31,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828859727] [2021-11-22 15:29:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:31,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:31,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:31,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:31,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828859727] [2021-11-22 15:29:31,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828859727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:31,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:31,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:31,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630788793] [2021-11-22 15:29:31,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:31,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:29:31,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:31,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:29:31,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:29:31,605 INFO L87 Difference]: Start difference. First operand 2465 states and 4526 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:31,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:31,842 INFO L93 Difference]: Finished difference Result 4862 states and 8971 transitions. [2021-11-22 15:29:31,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:29:31,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-22 15:29:31,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:31,850 INFO L225 Difference]: With dead ends: 4862 [2021-11-22 15:29:31,851 INFO L226 Difference]: Without dead ends: 2465 [2021-11-22 15:29:31,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:31,856 INFO L933 BasicCegarLoop]: 4464 mSDtfsCounter, 8896 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8896 SdHoareTripleChecker+Valid, 4560 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:31,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8896 Valid, 4560 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:29:31,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2021-11-22 15:29:31,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2465. [2021-11-22 15:29:31,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2465 states, 2460 states have (on average 1.8390243902439025) internal successors, (4524), 2464 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:32,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 4524 transitions. [2021-11-22 15:29:32,005 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 4524 transitions. Word has length 78 [2021-11-22 15:29:32,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:32,006 INFO L470 AbstractCegarLoop]: Abstraction has 2465 states and 4524 transitions. [2021-11-22 15:29:32,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:32,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 4524 transitions. [2021-11-22 15:29:32,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-22 15:29:32,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:32,010 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] [2021-11-22 15:29:32,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:29:32,010 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:32,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1623185551, now seen corresponding path program 1 times [2021-11-22 15:29:32,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:32,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463970844] [2021-11-22 15:29:32,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:32,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:32,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:32,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463970844] [2021-11-22 15:29:32,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463970844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:32,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:32,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:29:32,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390313870] [2021-11-22 15:29:32,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:32,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:29:32,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:32,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:29:32,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:32,072 INFO L87 Difference]: Start difference. First operand 2465 states and 4524 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) [2021-11-22 15:29:32,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:32,341 INFO L93 Difference]: Finished difference Result 4827 states and 8923 transitions. [2021-11-22 15:29:32,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:29:32,342 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 [2021-11-22 15:29:32,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:32,352 INFO L225 Difference]: With dead ends: 4827 [2021-11-22 15:29:32,352 INFO L226 Difference]: Without dead ends: 2472 [2021-11-22 15:29:32,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:29:32,358 INFO L933 BasicCegarLoop]: 4483 mSDtfsCounter, 13297 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13297 SdHoareTripleChecker+Valid, 4663 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:32,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13297 Valid, 4663 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:29:32,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2021-11-22 15:29:32,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2456. [2021-11-22 15:29:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 2451 states have (on average 1.8404732762137903) internal successors, (4511), 2455 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:32,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 4511 transitions. [2021-11-22 15:29:32,545 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 4511 transitions. Word has length 80 [2021-11-22 15:29:32,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:32,545 INFO L470 AbstractCegarLoop]: Abstraction has 2456 states and 4511 transitions. [2021-11-22 15:29:32,546 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) [2021-11-22 15:29:32,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 4511 transitions. [2021-11-22 15:29:32,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-22 15:29:32,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:32,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:32,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:29:32,551 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:32,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:32,552 INFO L85 PathProgramCache]: Analyzing trace with hash 124831286, now seen corresponding path program 1 times [2021-11-22 15:29:32,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:32,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716118331] [2021-11-22 15:29:32,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:32,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:32,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:32,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716118331] [2021-11-22 15:29:32,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716118331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:32,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:32,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:29:32,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174329910] [2021-11-22 15:29:32,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:32,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:29:32,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:32,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:29:32,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:29:32,637 INFO L87 Difference]: Start difference. First operand 2456 states and 4511 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:32,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:32,994 INFO L93 Difference]: Finished difference Result 4893 states and 9005 transitions. [2021-11-22 15:29:32,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:29:32,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-22 15:29:32,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:33,000 INFO L225 Difference]: With dead ends: 4893 [2021-11-22 15:29:33,000 INFO L226 Difference]: Without dead ends: 2505 [2021-11-22 15:29:33,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:29:33,006 INFO L933 BasicCegarLoop]: 4486 mSDtfsCounter, 17719 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17719 SdHoareTripleChecker+Valid, 4714 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:33,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17719 Valid, 4714 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:29:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2021-11-22 15:29:33,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2462. [2021-11-22 15:29:33,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2457 states have (on average 1.8384208384208385) internal successors, (4517), 2461 states have internal predecessors, (4517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 4517 transitions. [2021-11-22 15:29:33,164 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 4517 transitions. Word has length 82 [2021-11-22 15:29:33,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:33,164 INFO L470 AbstractCegarLoop]: Abstraction has 2462 states and 4517 transitions. [2021-11-22 15:29:33,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:33,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 4517 transitions. [2021-11-22 15:29:33,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-22 15:29:33,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:33,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:33,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:29:33,169 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:33,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:33,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1911990806, now seen corresponding path program 1 times [2021-11-22 15:29:33,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:33,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78883626] [2021-11-22 15:29:33,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:33,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:33,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:33,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78883626] [2021-11-22 15:29:33,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78883626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:33,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:33,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:33,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423666868] [2021-11-22 15:29:33,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:33,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:29:33,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:33,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:29:33,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:33,257 INFO L87 Difference]: Start difference. First operand 2462 states and 4517 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:34,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:34,877 INFO L93 Difference]: Finished difference Result 9608 states and 17785 transitions. [2021-11-22 15:29:34,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:29:34,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-22 15:29:34,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:34,893 INFO L225 Difference]: With dead ends: 9608 [2021-11-22 15:29:34,894 INFO L226 Difference]: Without dead ends: 7288 [2021-11-22 15:29:34,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:29:34,901 INFO L933 BasicCegarLoop]: 8612 mSDtfsCounter, 17211 mSDsluCounter, 13008 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17211 SdHoareTripleChecker+Valid, 21620 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:34,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17211 Valid, 21620 Invalid, 949 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [111 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 15:29:34,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7288 states. [2021-11-22 15:29:35,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7288 to 2466. [2021-11-22 15:29:35,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2461 states have (on average 1.8370581064607883) internal successors, (4521), 2465 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:35,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4521 transitions. [2021-11-22 15:29:35,139 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4521 transitions. Word has length 83 [2021-11-22 15:29:35,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:35,139 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4521 transitions. [2021-11-22 15:29:35,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:35,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4521 transitions. [2021-11-22 15:29:35,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-22 15:29:35,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:35,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:35,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:29:35,143 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:35,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:35,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1756136539, now seen corresponding path program 1 times [2021-11-22 15:29:35,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:35,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298247245] [2021-11-22 15:29:35,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:35,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:35,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:35,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298247245] [2021-11-22 15:29:35,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298247245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:35,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:35,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:29:35,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109497036] [2021-11-22 15:29:35,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:35,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:29:35,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:35,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:29:35,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:29:35,223 INFO L87 Difference]: Start difference. First operand 2466 states and 4521 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:36,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:36,405 INFO L93 Difference]: Finished difference Result 6994 states and 12884 transitions. [2021-11-22 15:29:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:29:36,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-22 15:29:36,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:36,422 INFO L225 Difference]: With dead ends: 6994 [2021-11-22 15:29:36,422 INFO L226 Difference]: Without dead ends: 4657 [2021-11-22 15:29:36,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:36,427 INFO L933 BasicCegarLoop]: 7761 mSDtfsCounter, 7748 mSDsluCounter, 6095 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7748 SdHoareTripleChecker+Valid, 13856 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:36,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7748 Valid, 13856 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 15:29:36,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4657 states. [2021-11-22 15:29:36,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4657 to 3347. [2021-11-22 15:29:36,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3347 states, 3342 states have (on average 1.8240574506283662) internal successors, (6096), 3346 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3347 states to 3347 states and 6096 transitions. [2021-11-22 15:29:36,603 INFO L78 Accepts]: Start accepts. Automaton has 3347 states and 6096 transitions. Word has length 84 [2021-11-22 15:29:36,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:36,603 INFO L470 AbstractCegarLoop]: Abstraction has 3347 states and 6096 transitions. [2021-11-22 15:29:36,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:36,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3347 states and 6096 transitions. [2021-11-22 15:29:36,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-22 15:29:36,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:36,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:36,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 15:29:36,613 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:36,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:36,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1864821011, now seen corresponding path program 1 times [2021-11-22 15:29:36,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:36,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112752190] [2021-11-22 15:29:36,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:36,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:36,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:36,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112752190] [2021-11-22 15:29:36,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112752190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:36,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:36,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:36,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126301348] [2021-11-22 15:29:36,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:36,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:29:36,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:36,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:29:36,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:36,672 INFO L87 Difference]: Start difference. First operand 3347 states and 6096 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:37,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:37,710 INFO L93 Difference]: Finished difference Result 23575 states and 43504 transitions. [2021-11-22 15:29:37,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:29:37,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-22 15:29:37,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:37,747 INFO L225 Difference]: With dead ends: 23575 [2021-11-22 15:29:37,747 INFO L226 Difference]: Without dead ends: 20366 [2021-11-22 15:29:37,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:29:37,758 INFO L933 BasicCegarLoop]: 6701 mSDtfsCounter, 28495 mSDsluCounter, 19564 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28495 SdHoareTripleChecker+Valid, 26265 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:37,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28495 Valid, 26265 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:29:37,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20366 states. [2021-11-22 15:29:38,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20366 to 6085. [2021-11-22 15:29:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6085 states, 6080 states have (on average 1.8379934210526316) internal successors, (11175), 6084 states have internal predecessors, (11175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:38,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6085 states to 6085 states and 11175 transitions. [2021-11-22 15:29:38,392 INFO L78 Accepts]: Start accepts. Automaton has 6085 states and 11175 transitions. Word has length 86 [2021-11-22 15:29:38,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:38,392 INFO L470 AbstractCegarLoop]: Abstraction has 6085 states and 11175 transitions. [2021-11-22 15:29:38,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:38,393 INFO L276 IsEmpty]: Start isEmpty. Operand 6085 states and 11175 transitions. [2021-11-22 15:29:38,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-22 15:29:38,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:38,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:38,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 15:29:38,397 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:38,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:38,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1920673195, now seen corresponding path program 1 times [2021-11-22 15:29:38,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:38,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442526771] [2021-11-22 15:29:38,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:38,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:38,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:38,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442526771] [2021-11-22 15:29:38,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442526771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:38,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:38,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:29:38,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31357848] [2021-11-22 15:29:38,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:38,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:29:38,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:38,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:29:38,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:29:38,471 INFO L87 Difference]: Start difference. First operand 6085 states and 11175 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:39,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:39,144 INFO L93 Difference]: Finished difference Result 14758 states and 27141 transitions. [2021-11-22 15:29:39,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:29:39,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-22 15:29:39,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:39,159 INFO L225 Difference]: With dead ends: 14758 [2021-11-22 15:29:39,159 INFO L226 Difference]: Without dead ends: 12196 [2021-11-22 15:29:39,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:39,167 INFO L933 BasicCegarLoop]: 4243 mSDtfsCounter, 9809 mSDsluCounter, 5964 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9809 SdHoareTripleChecker+Valid, 10207 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:39,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9809 Valid, 10207 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:29:39,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12196 states. [2021-11-22 15:29:39,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12196 to 8394. [2021-11-22 15:29:39,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8394 states, 8389 states have (on average 1.8393133865776612) internal successors, (15430), 8393 states have internal predecessors, (15430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:39,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8394 states to 8394 states and 15430 transitions. [2021-11-22 15:29:39,801 INFO L78 Accepts]: Start accepts. Automaton has 8394 states and 15430 transitions. Word has length 86 [2021-11-22 15:29:39,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:39,801 INFO L470 AbstractCegarLoop]: Abstraction has 8394 states and 15430 transitions. [2021-11-22 15:29:39,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:39,802 INFO L276 IsEmpty]: Start isEmpty. Operand 8394 states and 15430 transitions. [2021-11-22 15:29:39,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-22 15:29:39,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:39,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:39,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 15:29:39,805 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:39,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:39,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2117996115, now seen corresponding path program 1 times [2021-11-22 15:29:39,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:39,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957312985] [2021-11-22 15:29:39,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:39,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:39,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:39,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:39,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957312985] [2021-11-22 15:29:39,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957312985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:39,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:39,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:39,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520239997] [2021-11-22 15:29:39,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:39,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:29:39,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:39,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:29:39,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:29:39,857 INFO L87 Difference]: Start difference. First operand 8394 states and 15430 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:40,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:40,710 INFO L93 Difference]: Finished difference Result 17324 states and 31782 transitions. [2021-11-22 15:29:40,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:29:40,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-22 15:29:40,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:40,734 INFO L225 Difference]: With dead ends: 17324 [2021-11-22 15:29:40,734 INFO L226 Difference]: Without dead ends: 12646 [2021-11-22 15:29:40,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:40,744 INFO L933 BasicCegarLoop]: 4170 mSDtfsCounter, 2696 mSDsluCounter, 8114 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2696 SdHoareTripleChecker+Valid, 12284 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:40,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2696 Valid, 12284 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:29:40,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12646 states. [2021-11-22 15:29:41,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12646 to 8404. [2021-11-22 15:29:41,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8404 states, 8399 states have (on average 1.837837837837838) internal successors, (15436), 8403 states have internal predecessors, (15436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8404 states to 8404 states and 15436 transitions. [2021-11-22 15:29:41,254 INFO L78 Accepts]: Start accepts. Automaton has 8404 states and 15436 transitions. Word has length 88 [2021-11-22 15:29:41,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:41,254 INFO L470 AbstractCegarLoop]: Abstraction has 8404 states and 15436 transitions. [2021-11-22 15:29:41,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:41,255 INFO L276 IsEmpty]: Start isEmpty. Operand 8404 states and 15436 transitions. [2021-11-22 15:29:41,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-22 15:29:41,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:41,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:41,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 15:29:41,259 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:41,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:41,259 INFO L85 PathProgramCache]: Analyzing trace with hash 801547030, now seen corresponding path program 1 times [2021-11-22 15:29:41,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:41,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228121782] [2021-11-22 15:29:41,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:41,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:41,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:41,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:41,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228121782] [2021-11-22 15:29:41,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228121782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:41,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:41,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:29:41,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981505911] [2021-11-22 15:29:41,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:41,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:29:41,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:41,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:29:41,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:29:41,326 INFO L87 Difference]: Start difference. First operand 8404 states and 15436 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:42,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:42,599 INFO L93 Difference]: Finished difference Result 21916 states and 40301 transitions. [2021-11-22 15:29:42,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:29:42,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-22 15:29:42,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:42,618 INFO L225 Difference]: With dead ends: 21916 [2021-11-22 15:29:42,618 INFO L226 Difference]: Without dead ends: 17057 [2021-11-22 15:29:42,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:29:42,624 INFO L933 BasicCegarLoop]: 6269 mSDtfsCounter, 23738 mSDsluCounter, 13421 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23738 SdHoareTripleChecker+Valid, 19690 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:42,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23738 Valid, 19690 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:29:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17057 states. [2021-11-22 15:29:43,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17057 to 8408. [2021-11-22 15:29:43,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8408 states, 8403 states have (on average 1.8367249791741045) internal successors, (15434), 8407 states have internal predecessors, (15434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:43,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8408 states to 8408 states and 15434 transitions. [2021-11-22 15:29:43,127 INFO L78 Accepts]: Start accepts. Automaton has 8408 states and 15434 transitions. Word has length 94 [2021-11-22 15:29:43,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:43,127 INFO L470 AbstractCegarLoop]: Abstraction has 8408 states and 15434 transitions. [2021-11-22 15:29:43,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:43,128 INFO L276 IsEmpty]: Start isEmpty. Operand 8408 states and 15434 transitions. [2021-11-22 15:29:43,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-22 15:29:43,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:43,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:43,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 15:29:43,133 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:43,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:43,133 INFO L85 PathProgramCache]: Analyzing trace with hash 863586644, now seen corresponding path program 1 times [2021-11-22 15:29:43,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:43,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803241164] [2021-11-22 15:29:43,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:43,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:43,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:43,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803241164] [2021-11-22 15:29:43,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803241164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:43,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:43,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:29:43,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688026164] [2021-11-22 15:29:43,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:43,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:29:43,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:43,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:29:43,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:43,202 INFO L87 Difference]: Start difference. First operand 8408 states and 15434 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:43,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:43,838 INFO L93 Difference]: Finished difference Result 13087 states and 24049 transitions. [2021-11-22 15:29:43,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:29:43,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-22 15:29:43,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:43,849 INFO L225 Difference]: With dead ends: 13087 [2021-11-22 15:29:43,849 INFO L226 Difference]: Without dead ends: 8429 [2021-11-22 15:29:43,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:29:43,855 INFO L933 BasicCegarLoop]: 4163 mSDtfsCounter, 14555 mSDsluCounter, 3978 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14555 SdHoareTripleChecker+Valid, 8141 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:43,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14555 Valid, 8141 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:29:43,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8429 states. [2021-11-22 15:29:44,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8429 to 8408. [2021-11-22 15:29:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8408 states, 8403 states have (on average 1.834939902415804) internal successors, (15419), 8407 states have internal predecessors, (15419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8408 states to 8408 states and 15419 transitions. [2021-11-22 15:29:44,409 INFO L78 Accepts]: Start accepts. Automaton has 8408 states and 15419 transitions. Word has length 94 [2021-11-22 15:29:44,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:44,410 INFO L470 AbstractCegarLoop]: Abstraction has 8408 states and 15419 transitions. [2021-11-22 15:29:44,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:44,410 INFO L276 IsEmpty]: Start isEmpty. Operand 8408 states and 15419 transitions. [2021-11-22 15:29:44,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-22 15:29:44,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:44,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:44,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 15:29:44,413 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:44,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:44,413 INFO L85 PathProgramCache]: Analyzing trace with hash -724761258, now seen corresponding path program 1 times [2021-11-22 15:29:44,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:44,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213722331] [2021-11-22 15:29:44,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:44,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:44,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:44,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213722331] [2021-11-22 15:29:44,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213722331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:44,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:44,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:29:44,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944224365] [2021-11-22 15:29:44,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:44,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:29:44,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:44,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:29:44,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:29:44,472 INFO L87 Difference]: Start difference. First operand 8408 states and 15419 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:45,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:45,022 INFO L93 Difference]: Finished difference Result 15097 states and 27744 transitions. [2021-11-22 15:29:45,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:29:45,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-22 15:29:45,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:45,031 INFO L225 Difference]: With dead ends: 15097 [2021-11-22 15:29:45,032 INFO L226 Difference]: Without dead ends: 8386 [2021-11-22 15:29:45,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:29:45,037 INFO L933 BasicCegarLoop]: 4120 mSDtfsCounter, 4046 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4046 SdHoareTripleChecker+Valid, 4120 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:45,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4046 Valid, 4120 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:29:45,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8386 states. [2021-11-22 15:29:45,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8386 to 8386. [2021-11-22 15:29:45,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8386 states, 8382 states have (on average 1.834526366022429) internal successors, (15377), 8385 states have internal predecessors, (15377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8386 states to 8386 states and 15377 transitions. [2021-11-22 15:29:45,453 INFO L78 Accepts]: Start accepts. Automaton has 8386 states and 15377 transitions. Word has length 94 [2021-11-22 15:29:45,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:45,454 INFO L470 AbstractCegarLoop]: Abstraction has 8386 states and 15377 transitions. [2021-11-22 15:29:45,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:45,454 INFO L276 IsEmpty]: Start isEmpty. Operand 8386 states and 15377 transitions. [2021-11-22 15:29:45,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-22 15:29:45,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:45,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:45,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 15:29:45,458 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:45,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:45,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1651871566, now seen corresponding path program 1 times [2021-11-22 15:29:45,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:45,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537477939] [2021-11-22 15:29:45,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:45,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:45,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:45,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537477939] [2021-11-22 15:29:45,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537477939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:45,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:45,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:29:45,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513588023] [2021-11-22 15:29:45,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:45,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:29:45,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:45,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:29:45,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:45,520 INFO L87 Difference]: Start difference. First operand 8386 states and 15377 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:47,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:47,275 INFO L93 Difference]: Finished difference Result 33224 states and 60740 transitions. [2021-11-22 15:29:47,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:29:47,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-22 15:29:47,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:47,313 INFO L225 Difference]: With dead ends: 33224 [2021-11-22 15:29:47,314 INFO L226 Difference]: Without dead ends: 28599 [2021-11-22 15:29:47,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:29:47,324 INFO L933 BasicCegarLoop]: 8457 mSDtfsCounter, 8545 mSDsluCounter, 21016 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8545 SdHoareTripleChecker+Valid, 29473 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:47,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8545 Valid, 29473 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:29:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28599 states. [2021-11-22 15:29:48,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28599 to 10132. [2021-11-22 15:29:48,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10132 states, 10128 states have (on average 1.8146721958925751) internal successors, (18379), 10131 states have internal predecessors, (18379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:48,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10132 states to 10132 states and 18379 transitions. [2021-11-22 15:29:48,105 INFO L78 Accepts]: Start accepts. Automaton has 10132 states and 18379 transitions. Word has length 96 [2021-11-22 15:29:48,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:48,105 INFO L470 AbstractCegarLoop]: Abstraction has 10132 states and 18379 transitions. [2021-11-22 15:29:48,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:48,106 INFO L276 IsEmpty]: Start isEmpty. Operand 10132 states and 18379 transitions. [2021-11-22 15:29:48,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-22 15:29:48,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:48,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:48,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 15:29:48,109 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:48,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:48,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1888596364, now seen corresponding path program 1 times [2021-11-22 15:29:48,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:48,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514632954] [2021-11-22 15:29:48,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:48,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:48,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:48,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514632954] [2021-11-22 15:29:48,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514632954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:48,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:48,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:48,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982422121] [2021-11-22 15:29:48,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:48,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:29:48,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:48,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:29:48,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:48,208 INFO L87 Difference]: Start difference. First operand 10132 states and 18379 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:49,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:49,290 INFO L93 Difference]: Finished difference Result 16720 states and 30388 transitions. [2021-11-22 15:29:49,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:29:49,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-22 15:29:49,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:49,307 INFO L225 Difference]: With dead ends: 16720 [2021-11-22 15:29:49,307 INFO L226 Difference]: Without dead ends: 16705 [2021-11-22 15:29:49,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:29:49,310 INFO L933 BasicCegarLoop]: 4120 mSDtfsCounter, 8384 mSDsluCounter, 8233 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8384 SdHoareTripleChecker+Valid, 12353 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:49,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8384 Valid, 12353 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:29:49,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16705 states. [2021-11-22 15:29:49,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16705 to 10150. [2021-11-22 15:29:49,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10150 states, 10146 states have (on average 1.8132268874433275) internal successors, (18397), 10149 states have internal predecessors, (18397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10150 states to 10150 states and 18397 transitions. [2021-11-22 15:29:49,959 INFO L78 Accepts]: Start accepts. Automaton has 10150 states and 18397 transitions. Word has length 96 [2021-11-22 15:29:49,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:49,960 INFO L470 AbstractCegarLoop]: Abstraction has 10150 states and 18397 transitions. [2021-11-22 15:29:49,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:49,960 INFO L276 IsEmpty]: Start isEmpty. Operand 10150 states and 18397 transitions. [2021-11-22 15:29:49,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 15:29:49,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:49,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:49,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 15:29:49,964 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:49,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:49,964 INFO L85 PathProgramCache]: Analyzing trace with hash 991228153, now seen corresponding path program 1 times [2021-11-22 15:29:49,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:49,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028326514] [2021-11-22 15:29:49,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:49,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:50,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:50,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028326514] [2021-11-22 15:29:50,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028326514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:50,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:50,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:50,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678054974] [2021-11-22 15:29:50,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:50,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:29:50,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:50,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:29:50,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:29:50,020 INFO L87 Difference]: Start difference. First operand 10150 states and 18397 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:50,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:50,787 INFO L93 Difference]: Finished difference Result 10171 states and 18417 transitions. [2021-11-22 15:29:50,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:29:50,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-22 15:29:50,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:50,800 INFO L225 Difference]: With dead ends: 10171 [2021-11-22 15:29:50,800 INFO L226 Difference]: Without dead ends: 10156 [2021-11-22 15:29:50,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:50,804 INFO L933 BasicCegarLoop]: 4123 mSDtfsCounter, 4358 mSDsluCounter, 3888 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4358 SdHoareTripleChecker+Valid, 8011 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:50,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4358 Valid, 8011 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:29:50,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10156 states. [2021-11-22 15:29:51,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10156 to 10150. [2021-11-22 15:29:51,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10150 states, 10146 states have (on average 1.81224127735068) internal successors, (18387), 10149 states have internal predecessors, (18387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:51,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10150 states to 10150 states and 18387 transitions. [2021-11-22 15:29:51,714 INFO L78 Accepts]: Start accepts. Automaton has 10150 states and 18387 transitions. Word has length 98 [2021-11-22 15:29:51,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:51,715 INFO L470 AbstractCegarLoop]: Abstraction has 10150 states and 18387 transitions. [2021-11-22 15:29:51,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:51,715 INFO L276 IsEmpty]: Start isEmpty. Operand 10150 states and 18387 transitions. [2021-11-22 15:29:51,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-22 15:29:51,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:51,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:51,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 15:29:51,721 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:51,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:51,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1778783252, now seen corresponding path program 1 times [2021-11-22 15:29:51,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:51,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207252439] [2021-11-22 15:29:51,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:51,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:51,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:51,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:51,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207252439] [2021-11-22 15:29:51,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207252439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:51,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:51,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:51,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991865219] [2021-11-22 15:29:51,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:51,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:29:51,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:51,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:29:51,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:51,796 INFO L87 Difference]: Start difference. First operand 10150 states and 18387 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 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) [2021-11-22 15:29:53,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:53,576 INFO L93 Difference]: Finished difference Result 23957 states and 43270 transitions. [2021-11-22 15:29:53,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:29:53,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 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 105 [2021-11-22 15:29:53,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:53,598 INFO L225 Difference]: With dead ends: 23957 [2021-11-22 15:29:53,598 INFO L226 Difference]: Without dead ends: 15778 [2021-11-22 15:29:53,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:29:53,607 INFO L933 BasicCegarLoop]: 5849 mSDtfsCounter, 10291 mSDsluCounter, 4225 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10291 SdHoareTripleChecker+Valid, 10074 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:53,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10291 Valid, 10074 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:29:53,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15778 states. [2021-11-22 15:29:54,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15778 to 10150. [2021-11-22 15:29:54,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10150 states, 10146 states have (on average 1.8112556672580327) internal successors, (18377), 10149 states have internal predecessors, (18377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:54,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10150 states to 10150 states and 18377 transitions. [2021-11-22 15:29:54,445 INFO L78 Accepts]: Start accepts. Automaton has 10150 states and 18377 transitions. Word has length 105 [2021-11-22 15:29:54,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:54,445 INFO L470 AbstractCegarLoop]: Abstraction has 10150 states and 18377 transitions. [2021-11-22 15:29:54,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 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) [2021-11-22 15:29:54,445 INFO L276 IsEmpty]: Start isEmpty. Operand 10150 states and 18377 transitions. [2021-11-22 15:29:54,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-22 15:29:54,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:54,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:54,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 15:29:54,449 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:54,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:54,450 INFO L85 PathProgramCache]: Analyzing trace with hash 587967892, now seen corresponding path program 1 times [2021-11-22 15:29:54,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:54,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705427409] [2021-11-22 15:29:54,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:54,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:54,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:54,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:54,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705427409] [2021-11-22 15:29:54,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705427409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:54,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:54,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:29:54,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350840576] [2021-11-22 15:29:54,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:54,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:29:54,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:54,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:29:54,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:29:54,518 INFO L87 Difference]: Start difference. First operand 10150 states and 18377 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:55,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:55,979 INFO L93 Difference]: Finished difference Result 23870 states and 43140 transitions. [2021-11-22 15:29:55,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:29:55,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-22 15:29:55,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:55,999 INFO L225 Difference]: With dead ends: 23870 [2021-11-22 15:29:55,999 INFO L226 Difference]: Without dead ends: 15337 [2021-11-22 15:29:56,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:29:56,008 INFO L933 BasicCegarLoop]: 4036 mSDtfsCounter, 14136 mSDsluCounter, 3704 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14136 SdHoareTripleChecker+Valid, 7740 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:56,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14136 Valid, 7740 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:29:56,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15337 states. [2021-11-22 15:29:56,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15337 to 10150. [2021-11-22 15:29:56,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10150 states, 10146 states have (on average 1.7919377094421447) internal successors, (18181), 10149 states have internal predecessors, (18181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10150 states to 10150 states and 18181 transitions. [2021-11-22 15:29:56,831 INFO L78 Accepts]: Start accepts. Automaton has 10150 states and 18181 transitions. Word has length 109 [2021-11-22 15:29:56,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:56,831 INFO L470 AbstractCegarLoop]: Abstraction has 10150 states and 18181 transitions. [2021-11-22 15:29:56,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:56,831 INFO L276 IsEmpty]: Start isEmpty. Operand 10150 states and 18181 transitions. [2021-11-22 15:29:56,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:29:56,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:56,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:56,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 15:29:56,835 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:29:56,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:56,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1933332192, now seen corresponding path program 1 times [2021-11-22 15:29:56,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:56,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730597246] [2021-11-22 15:29:56,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:56,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:56,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:56,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730597246] [2021-11-22 15:29:56,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730597246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:56,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:56,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:29:56,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939649777] [2021-11-22 15:29:56,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:56,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:29:56,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:56,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:29:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:29:56,928 INFO L87 Difference]: Start difference. First operand 10150 states and 18181 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:59,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:59,787 INFO L93 Difference]: Finished difference Result 29648 states and 53236 transitions. [2021-11-22 15:29:59,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 15:29:59,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-22 15:29:59,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:59,815 INFO L225 Difference]: With dead ends: 29648 [2021-11-22 15:29:59,815 INFO L226 Difference]: Without dead ends: 23631 [2021-11-22 15:29:59,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:29:59,821 INFO L933 BasicCegarLoop]: 5810 mSDtfsCounter, 27840 mSDsluCounter, 15253 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27840 SdHoareTripleChecker+Valid, 21063 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:59,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27840 Valid, 21063 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 15:29:59,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23631 states. [2021-11-22 15:30:00,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23631 to 12896. [2021-11-22 15:30:00,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12896 states, 12892 states have (on average 1.7955321129382562) internal successors, (23148), 12895 states have internal predecessors, (23148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:00,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12896 states to 12896 states and 23148 transitions. [2021-11-22 15:30:00,822 INFO L78 Accepts]: Start accepts. Automaton has 12896 states and 23148 transitions. Word has length 110 [2021-11-22 15:30:00,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:00,822 INFO L470 AbstractCegarLoop]: Abstraction has 12896 states and 23148 transitions. [2021-11-22 15:30:00,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:00,823 INFO L276 IsEmpty]: Start isEmpty. Operand 12896 states and 23148 transitions. [2021-11-22 15:30:00,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:30:00,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:00,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:00,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-22 15:30:00,826 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:30:00,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:00,826 INFO L85 PathProgramCache]: Analyzing trace with hash 190038364, now seen corresponding path program 1 times [2021-11-22 15:30:00,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:00,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237949165] [2021-11-22 15:30:00,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:00,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:00,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:00,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237949165] [2021-11-22 15:30:00,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237949165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:00,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:00,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:30:00,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381189656] [2021-11-22 15:30:00,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:00,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:30:00,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:00,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:30:00,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:30:00,939 INFO L87 Difference]: Start difference. First operand 12896 states and 23148 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:04,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:04,599 INFO L93 Difference]: Finished difference Result 40391 states and 72591 transitions. [2021-11-22 15:30:04,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:30:04,600 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-22 15:30:04,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:04,641 INFO L225 Difference]: With dead ends: 40391 [2021-11-22 15:30:04,641 INFO L226 Difference]: Without dead ends: 29328 [2021-11-22 15:30:04,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:30:04,656 INFO L933 BasicCegarLoop]: 6054 mSDtfsCounter, 15192 mSDsluCounter, 14770 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15192 SdHoareTripleChecker+Valid, 20824 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:04,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15192 Valid, 20824 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 15:30:04,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29328 states. [2021-11-22 15:30:06,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29328 to 17822. [2021-11-22 15:30:06,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17822 states, 17818 states have (on average 1.7828039061623078) internal successors, (31766), 17821 states have internal predecessors, (31766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:06,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17822 states to 17822 states and 31766 transitions. [2021-11-22 15:30:06,404 INFO L78 Accepts]: Start accepts. Automaton has 17822 states and 31766 transitions. Word has length 110 [2021-11-22 15:30:06,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:06,404 INFO L470 AbstractCegarLoop]: Abstraction has 17822 states and 31766 transitions. [2021-11-22 15:30:06,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:06,404 INFO L276 IsEmpty]: Start isEmpty. Operand 17822 states and 31766 transitions. [2021-11-22 15:30:06,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:30:06,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:06,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:06,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-22 15:30:06,408 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:30:06,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:06,409 INFO L85 PathProgramCache]: Analyzing trace with hash 516117276, now seen corresponding path program 1 times [2021-11-22 15:30:06,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:06,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570677931] [2021-11-22 15:30:06,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:06,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:06,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:06,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570677931] [2021-11-22 15:30:06,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570677931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:06,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:06,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:30:06,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359989133] [2021-11-22 15:30:06,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:06,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:30:06,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:06,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:30:06,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:06,458 INFO L87 Difference]: Start difference. First operand 17822 states and 31766 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:07,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:07,646 INFO L93 Difference]: Finished difference Result 29475 states and 52752 transitions. [2021-11-22 15:30:07,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:30:07,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-22 15:30:07,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:07,667 INFO L225 Difference]: With dead ends: 29475 [2021-11-22 15:30:07,667 INFO L226 Difference]: Without dead ends: 15407 [2021-11-22 15:30:07,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:07,682 INFO L933 BasicCegarLoop]: 4236 mSDtfsCounter, 3353 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3353 SdHoareTripleChecker+Valid, 5058 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:07,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3353 Valid, 5058 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:07,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15407 states. [2021-11-22 15:30:08,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15407 to 15392. [2021-11-22 15:30:08,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15392 states, 15388 states have (on average 1.8028333766571354) internal successors, (27742), 15391 states have internal predecessors, (27742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:08,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15392 states to 15392 states and 27742 transitions. [2021-11-22 15:30:08,827 INFO L78 Accepts]: Start accepts. Automaton has 15392 states and 27742 transitions. Word has length 110 [2021-11-22 15:30:08,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:08,828 INFO L470 AbstractCegarLoop]: Abstraction has 15392 states and 27742 transitions. [2021-11-22 15:30:08,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:08,828 INFO L276 IsEmpty]: Start isEmpty. Operand 15392 states and 27742 transitions. [2021-11-22 15:30:08,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-22 15:30:08,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:08,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:08,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-22 15:30:08,831 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:30:08,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:08,831 INFO L85 PathProgramCache]: Analyzing trace with hash -642788625, now seen corresponding path program 1 times [2021-11-22 15:30:08,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:08,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542904776] [2021-11-22 15:30:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:08,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:08,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:08,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542904776] [2021-11-22 15:30:08,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542904776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:08,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:08,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:30:08,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498834644] [2021-11-22 15:30:08,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:08,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:30:08,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:08,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:30:08,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:08,899 INFO L87 Difference]: Start difference. First operand 15392 states and 27742 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:11,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:11,424 INFO L93 Difference]: Finished difference Result 44325 states and 79981 transitions. [2021-11-22 15:30:11,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:30:11,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-22 15:30:11,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:11,464 INFO L225 Difference]: With dead ends: 44325 [2021-11-22 15:30:11,465 INFO L226 Difference]: Without dead ends: 30655 [2021-11-22 15:30:11,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:30:11,478 INFO L933 BasicCegarLoop]: 6229 mSDtfsCounter, 15836 mSDsluCounter, 4073 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15836 SdHoareTripleChecker+Valid, 10302 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:11,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15836 Valid, 10302 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:11,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30655 states. [2021-11-22 15:30:13,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30655 to 30655. [2021-11-22 15:30:13,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30655 states, 30651 states have (on average 1.8044435744347656) internal successors, (55308), 30654 states have internal predecessors, (55308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:13,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30655 states to 30655 states and 55308 transitions. [2021-11-22 15:30:13,888 INFO L78 Accepts]: Start accepts. Automaton has 30655 states and 55308 transitions. Word has length 111 [2021-11-22 15:30:13,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:13,888 INFO L470 AbstractCegarLoop]: Abstraction has 30655 states and 55308 transitions. [2021-11-22 15:30:13,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:13,889 INFO L276 IsEmpty]: Start isEmpty. Operand 30655 states and 55308 transitions. [2021-11-22 15:30:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-22 15:30:13,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:13,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:13,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-22 15:30:13,894 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:30:13,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:13,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1499961763, now seen corresponding path program 1 times [2021-11-22 15:30:13,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:13,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195177857] [2021-11-22 15:30:13,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:13,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:13,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:13,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195177857] [2021-11-22 15:30:13,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195177857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:13,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:13,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:30:13,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739148457] [2021-11-22 15:30:13,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:13,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:13,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:13,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:13,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:13,942 INFO L87 Difference]: Start difference. First operand 30655 states and 55308 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:20,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:20,895 INFO L93 Difference]: Finished difference Result 122235 states and 220758 transitions. [2021-11-22 15:30:20,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:30:20,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 [2021-11-22 15:30:20,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:21,205 INFO L225 Difference]: With dead ends: 122235 [2021-11-22 15:30:21,205 INFO L226 Difference]: Without dead ends: 91696 [2021-11-22 15:30:21,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:21,234 INFO L933 BasicCegarLoop]: 4068 mSDtfsCounter, 12066 mSDsluCounter, 8104 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12066 SdHoareTripleChecker+Valid, 12172 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:21,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12066 Valid, 12172 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:30:21,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91696 states. [2021-11-22 15:30:24,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91696 to 30673. [2021-11-22 15:30:24,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30673 states, 30669 states have (on average 1.8039388307411393) internal successors, (55325), 30672 states have internal predecessors, (55325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30673 states to 30673 states and 55325 transitions. [2021-11-22 15:30:24,598 INFO L78 Accepts]: Start accepts. Automaton has 30673 states and 55325 transitions. Word has length 112 [2021-11-22 15:30:24,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:24,601 INFO L470 AbstractCegarLoop]: Abstraction has 30673 states and 55325 transitions. [2021-11-22 15:30:24,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:24,602 INFO L276 IsEmpty]: Start isEmpty. Operand 30673 states and 55325 transitions. [2021-11-22 15:30:24,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-22 15:30:24,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:24,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:24,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-22 15:30:24,607 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:30:24,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:24,608 INFO L85 PathProgramCache]: Analyzing trace with hash 913685541, now seen corresponding path program 1 times [2021-11-22 15:30:24,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:24,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40659743] [2021-11-22 15:30:24,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:24,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:24,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:24,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:24,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40659743] [2021-11-22 15:30:24,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40659743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:24,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:24,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:30:24,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402825786] [2021-11-22 15:30:24,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:24,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:24,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:24,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:24,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:24,653 INFO L87 Difference]: Start difference. First operand 30673 states and 55325 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:30,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:30,143 INFO L93 Difference]: Finished difference Result 91779 states and 165685 transitions. [2021-11-22 15:30:30,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:30,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 [2021-11-22 15:30:30,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:30,245 INFO L225 Difference]: With dead ends: 91779 [2021-11-22 15:30:30,245 INFO L226 Difference]: Without dead ends: 61192 [2021-11-22 15:30:30,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:30,268 INFO L933 BasicCegarLoop]: 8012 mSDtfsCounter, 8094 mSDsluCounter, 4097 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8094 SdHoareTripleChecker+Valid, 12109 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:30,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8094 Valid, 12109 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:30,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61192 states. [2021-11-22 15:30:33,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61192 to 30685. [2021-11-22 15:30:33,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30685 states, 30681 states have (on average 1.8035917994850232) internal successors, (55336), 30684 states have internal predecessors, (55336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:33,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30685 states to 30685 states and 55336 transitions. [2021-11-22 15:30:33,543 INFO L78 Accepts]: Start accepts. Automaton has 30685 states and 55336 transitions. Word has length 112 [2021-11-22 15:30:33,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:33,543 INFO L470 AbstractCegarLoop]: Abstraction has 30685 states and 55336 transitions. [2021-11-22 15:30:33,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:33,543 INFO L276 IsEmpty]: Start isEmpty. Operand 30685 states and 55336 transitions. [2021-11-22 15:30:33,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-22 15:30:33,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:33,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:33,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-22 15:30:33,549 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:30:33,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:33,549 INFO L85 PathProgramCache]: Analyzing trace with hash -91488204, now seen corresponding path program 1 times [2021-11-22 15:30:33,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:33,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182718674] [2021-11-22 15:30:33,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:33,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:33,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:33,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182718674] [2021-11-22 15:30:33,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182718674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:33,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:33,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:30:33,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846076831] [2021-11-22 15:30:33,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:33,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:30:33,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:33,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:30:33,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:33,624 INFO L87 Difference]: Start difference. First operand 30685 states and 55336 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 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) [2021-11-22 15:30:39,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:39,479 INFO L93 Difference]: Finished difference Result 81602 states and 147308 transitions. [2021-11-22 15:30:39,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:30:39,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 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 113 [2021-11-22 15:30:39,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:39,562 INFO L225 Difference]: With dead ends: 81602 [2021-11-22 15:30:39,563 INFO L226 Difference]: Without dead ends: 57971 [2021-11-22 15:30:39,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:30:39,578 INFO L933 BasicCegarLoop]: 5928 mSDtfsCounter, 11343 mSDsluCounter, 13103 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11343 SdHoareTripleChecker+Valid, 19031 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:39,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11343 Valid, 19031 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:30:39,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57971 states.