./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 bfa23a07aa8a02ca6771de75de8be171cc21a8c2878b440538c1944a91ea1c1d --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:44:17,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:44:17,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:44:17,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:44:17,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:44:17,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:44:17,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:44:17,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:44:17,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:44:17,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:44:17,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:44:17,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:44:17,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:44:17,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:44:17,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:44:17,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:44:17,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:44:17,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:44:17,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:44:17,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:44:17,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:44:17,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:44:17,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:44:17,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:44:17,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:44:17,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:44:17,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:44:17,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:44:17,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:44:17,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:44:17,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:44:17,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:44:17,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:44:17,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:44:17,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:44:17,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:44:17,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:44:17,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:44:17,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:44:17,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:44:17,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:44:17,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:44:17,767 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:44:17,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:44:17,768 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:44:17,768 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:44:17,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:44:17,769 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:44:17,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:44:17,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:44:17,770 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:44:17,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:44:17,771 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:44:17,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:44:17,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:44:17,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:44:17,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:44:17,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:44:17,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:44:17,773 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:44:17,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:44:17,773 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:44:17,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:44:17,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:44:17,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:44:17,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:44:17,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:44:17,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:44:17,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:44:17,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:44:17,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:44:17,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:44:17,775 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:44:17,775 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:44:17,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:44:17,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:44:17,776 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfa23a07aa8a02ca6771de75de8be171cc21a8c2878b440538c1944a91ea1c1d [2021-12-14 15:44:18,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:44:18,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:44:18,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:44:18,052 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:44:18,053 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:44:18,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c [2021-12-14 15:44:18,120 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/675e61b60/214771f352b5443aa7e31a0c542da70e/FLAG50802ae45 [2021-12-14 15:44:18,963 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:44:18,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c [2021-12-14 15:44:19,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/675e61b60/214771f352b5443aa7e31a0c542da70e/FLAG50802ae45 [2021-12-14 15:44:19,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/675e61b60/214771f352b5443aa7e31a0c542da70e [2021-12-14 15:44:19,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:44:19,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:44:19,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:44:19,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:44:19,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:44:19,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:44:19" (1/1) ... [2021-12-14 15:44:19,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d353a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:19, skipping insertion in model container [2021-12-14 15:44:19,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:44:19" (1/1) ... [2021-12-14 15:44:19,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:44:19,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:44:20,917 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c[380323,380336] [2021-12-14 15:44:20,949 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c[383339,383352] [2021-12-14 15:44:21,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:44:21,192 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:44:22,042 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c[380323,380336] [2021-12-14 15:44:22,047 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c[383339,383352] [2021-12-14 15:44:22,073 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:44:22,122 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:44:22,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:22 WrapperNode [2021-12-14 15:44:22,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:44:22,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:44:22,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:44:22,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:44:22,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:22" (1/1) ... [2021-12-14 15:44:22,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:22" (1/1) ... [2021-12-14 15:44:22,721 INFO L137 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12967 [2021-12-14 15:44:22,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:44:22,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:44:22,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:44:22,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:44:22,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:22" (1/1) ... [2021-12-14 15:44:22,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:22" (1/1) ... [2021-12-14 15:44:22,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:22" (1/1) ... [2021-12-14 15:44:22,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:22" (1/1) ... [2021-12-14 15:44:23,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:22" (1/1) ... [2021-12-14 15:44:23,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:22" (1/1) ... [2021-12-14 15:44:23,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:22" (1/1) ... [2021-12-14 15:44:23,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:44:23,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:44:23,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:44:23,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:44:23,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:22" (1/1) ... [2021-12-14 15:44:23,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:44:23,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:44:23,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 15:44:23,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 15:44:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:44:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:44:23,295 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:44:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:44:23,295 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:44:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:44:23,295 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:44:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:44:23,296 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:44:23,296 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:44:23,296 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:44:23,296 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:44:23,296 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:44:23,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:44:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:44:23,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:44:23,449 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:44:23,451 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:44:29,308 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:44:29,328 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:44:29,329 INFO L301 CfgBuilder]: Removed 12 assume(true) statements. [2021-12-14 15:44:29,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:44:29 BoogieIcfgContainer [2021-12-14 15:44:29,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:44:29,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:44:29,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:44:29,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:44:29,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:44:19" (1/3) ... [2021-12-14 15:44:29,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc7cb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:44:29, skipping insertion in model container [2021-12-14 15:44:29,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:22" (2/3) ... [2021-12-14 15:44:29,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc7cb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:44:29, skipping insertion in model container [2021-12-14 15:44:29,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:44:29" (3/3) ... [2021-12-14 15:44:29,342 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.08.cil-1.c [2021-12-14 15:44:29,347 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:44:29,347 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:44:29,398 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:44:29,403 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 15:44:29,404 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:44:29,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-14 15:44:29,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:44:29,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:29,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:29,471 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:29,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:29,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1316356206, now seen corresponding path program 1 times [2021-12-14 15:44:29,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:29,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35988920] [2021-12-14 15:44:29,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:29,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:29,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:29,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:44:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:29,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:44:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:29,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:44:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:29,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:44:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:29,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:29,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:29,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35988920] [2021-12-14 15:44:29,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35988920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:29,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:29,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:44:29,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205963922] [2021-12-14 15:44:29,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:29,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:44:29,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:30,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:44:30,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:44:30,008 INFO L87 Difference]: Start difference. First operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:31,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:31,270 INFO L93 Difference]: Finished difference Result 5022 states and 9244 transitions. [2021-12-14 15:44:31,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:44:31,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:44:31,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:31,300 INFO L225 Difference]: With dead ends: 5022 [2021-12-14 15:44:31,301 INFO L226 Difference]: Without dead ends: 2496 [2021-12-14 15:44:31,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:44:31,318 INFO L933 BasicCegarLoop]: 4499 mSDtfsCounter, 734 mSDsluCounter, 12377 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 16876 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:31,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 16876 Invalid, 547 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:44:31,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-12-14 15:44:31,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2398. [2021-12-14 15:44:31,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2368 states have (on average 1.8344594594594594) internal successors, (4344), 2370 states have internal predecessors, (4344), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-14 15:44:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4388 transitions. [2021-12-14 15:44:31,443 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4388 transitions. Word has length 134 [2021-12-14 15:44:31,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:31,444 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 4388 transitions. [2021-12-14 15:44:31,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:31,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4388 transitions. [2021-12-14 15:44:31,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:44:31,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:31,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:31,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:44:31,457 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:31,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:31,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2022952812, now seen corresponding path program 1 times [2021-12-14 15:44:31,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:31,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433740144] [2021-12-14 15:44:31,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:31,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:31,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:31,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:44:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:31,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:44:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:31,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:44:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:31,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:44:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:31,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:31,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433740144] [2021-12-14 15:44:31,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433740144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:31,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:31,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:44:31,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733015663] [2021-12-14 15:44:31,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:31,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:44:31,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:31,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:44:31,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:44:31,708 INFO L87 Difference]: Start difference. First operand 2398 states and 4388 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:33,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:33,554 INFO L93 Difference]: Finished difference Result 3126 states and 5555 transitions. [2021-12-14 15:44:33,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:44:33,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:44:33,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:33,568 INFO L225 Difference]: With dead ends: 3126 [2021-12-14 15:44:33,569 INFO L226 Difference]: Without dead ends: 2865 [2021-12-14 15:44:33,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:44:33,572 INFO L933 BasicCegarLoop]: 4466 mSDtfsCounter, 5050 mSDsluCounter, 12616 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5065 SdHoareTripleChecker+Valid, 17082 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:33,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5065 Valid, 17082 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 15:44:33,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2021-12-14 15:44:33,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2670. [2021-12-14 15:44:33,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2616 states have (on average 1.8103975535168195) internal successors, (4736), 2619 states have internal predecessors, (4736), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-14 15:44:33,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4817 transitions. [2021-12-14 15:44:33,724 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4817 transitions. Word has length 134 [2021-12-14 15:44:33,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:33,724 INFO L470 AbstractCegarLoop]: Abstraction has 2670 states and 4817 transitions. [2021-12-14 15:44:33,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:33,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4817 transitions. [2021-12-14 15:44:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:44:33,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:33,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:33,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:44:33,728 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:33,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:33,729 INFO L85 PathProgramCache]: Analyzing trace with hash 316449264, now seen corresponding path program 1 times [2021-12-14 15:44:33,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:33,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639723156] [2021-12-14 15:44:33,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:33,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:33,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:33,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:44:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:33,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:44:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:33,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:44:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:33,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:44:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:33,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:33,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639723156] [2021-12-14 15:44:33,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639723156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:33,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:33,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:33,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728143835] [2021-12-14 15:44:33,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:33,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:33,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:33,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:33,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:33,879 INFO L87 Difference]: Start difference. First operand 2670 states and 4817 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:35,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:35,147 INFO L93 Difference]: Finished difference Result 3412 states and 6012 transitions. [2021-12-14 15:44:35,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:44:35,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:44:35,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:35,160 INFO L225 Difference]: With dead ends: 3412 [2021-12-14 15:44:35,161 INFO L226 Difference]: Without dead ends: 2879 [2021-12-14 15:44:35,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:44:35,171 INFO L933 BasicCegarLoop]: 4417 mSDtfsCounter, 4746 mSDsluCounter, 16509 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4762 SdHoareTripleChecker+Valid, 20926 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:35,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4762 Valid, 20926 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:44:35,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2021-12-14 15:44:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2670. [2021-12-14 15:44:35,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2616 states have (on average 1.8096330275229358) internal successors, (4734), 2619 states have internal predecessors, (4734), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-14 15:44:35,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4815 transitions. [2021-12-14 15:44:35,270 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4815 transitions. Word has length 134 [2021-12-14 15:44:35,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:35,270 INFO L470 AbstractCegarLoop]: Abstraction has 2670 states and 4815 transitions. [2021-12-14 15:44:35,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:35,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4815 transitions. [2021-12-14 15:44:35,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:44:35,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:35,273 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:35,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:44:35,274 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:35,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:35,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1976631762, now seen corresponding path program 1 times [2021-12-14 15:44:35,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:35,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510420933] [2021-12-14 15:44:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:35,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:35,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:35,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:44:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:35,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:44:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:35,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:44:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:35,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:44:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:35,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:35,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510420933] [2021-12-14 15:44:35,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510420933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:35,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:35,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:35,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548064423] [2021-12-14 15:44:35,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:35,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:35,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:35,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:35,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:35,411 INFO L87 Difference]: Start difference. First operand 2670 states and 4815 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:37,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:37,534 INFO L93 Difference]: Finished difference Result 3775 states and 6579 transitions. [2021-12-14 15:44:37,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:44:37,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:44:37,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:37,556 INFO L225 Difference]: With dead ends: 3775 [2021-12-14 15:44:37,556 INFO L226 Difference]: Without dead ends: 3242 [2021-12-14 15:44:37,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:44:37,560 INFO L933 BasicCegarLoop]: 4509 mSDtfsCounter, 5127 mSDsluCounter, 16821 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5142 SdHoareTripleChecker+Valid, 21330 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:37,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5142 Valid, 21330 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:44:37,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2021-12-14 15:44:37,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 2923. [2021-12-14 15:44:37,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2845 states have (on average 1.78804920913884) internal successors, (5087), 2849 states have internal predecessors, (5087), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2021-12-14 15:44:37,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 5204 transitions. [2021-12-14 15:44:37,650 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 5204 transitions. Word has length 134 [2021-12-14 15:44:37,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:37,652 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 5204 transitions. [2021-12-14 15:44:37,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:37,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 5204 transitions. [2021-12-14 15:44:37,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:44:37,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:37,658 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:37,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:44:37,659 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:37,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:37,660 INFO L85 PathProgramCache]: Analyzing trace with hash -249486800, now seen corresponding path program 1 times [2021-12-14 15:44:37,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:37,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276844421] [2021-12-14 15:44:37,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:37,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:37,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:44:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:37,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:44:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:37,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:44:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:37,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:44:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:37,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:37,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276844421] [2021-12-14 15:44:37,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276844421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:37,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:37,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:37,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987941966] [2021-12-14 15:44:37,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:37,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:37,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:37,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:37,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:37,793 INFO L87 Difference]: Start difference. First operand 2923 states and 5204 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:39,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:39,841 INFO L93 Difference]: Finished difference Result 4734 states and 8088 transitions. [2021-12-14 15:44:39,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:44:39,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:44:39,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:39,861 INFO L225 Difference]: With dead ends: 4734 [2021-12-14 15:44:39,861 INFO L226 Difference]: Without dead ends: 3948 [2021-12-14 15:44:39,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:44:39,867 INFO L933 BasicCegarLoop]: 4663 mSDtfsCounter, 5060 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5075 SdHoareTripleChecker+Valid, 21906 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:39,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5075 Valid, 21906 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:44:39,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2021-12-14 15:44:39,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3431. [2021-12-14 15:44:39,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3305 states have (on average 1.7537065052950076) internal successors, (5796), 3311 states have internal predecessors, (5796), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-14 15:44:40,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5989 transitions. [2021-12-14 15:44:40,010 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5989 transitions. Word has length 134 [2021-12-14 15:44:40,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:40,010 INFO L470 AbstractCegarLoop]: Abstraction has 3431 states and 5989 transitions. [2021-12-14 15:44:40,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:40,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5989 transitions. [2021-12-14 15:44:40,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:44:40,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:40,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:40,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:44:40,014 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:40,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:40,015 INFO L85 PathProgramCache]: Analyzing trace with hash 221869550, now seen corresponding path program 1 times [2021-12-14 15:44:40,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:40,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416763724] [2021-12-14 15:44:40,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:40,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:40,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:40,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:44:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:40,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:44:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:40,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:44:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:40,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:44:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:40,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:40,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416763724] [2021-12-14 15:44:40,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416763724] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:40,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:40,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:40,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550716782] [2021-12-14 15:44:40,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:40,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:40,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:40,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:40,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:40,134 INFO L87 Difference]: Start difference. First operand 3431 states and 5989 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:41,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:41,156 INFO L93 Difference]: Finished difference Result 5228 states and 8858 transitions. [2021-12-14 15:44:41,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:44:41,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:44:41,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:41,171 INFO L225 Difference]: With dead ends: 5228 [2021-12-14 15:44:41,171 INFO L226 Difference]: Without dead ends: 3934 [2021-12-14 15:44:41,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:44:41,178 INFO L933 BasicCegarLoop]: 4402 mSDtfsCounter, 4865 mSDsluCounter, 12408 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4881 SdHoareTripleChecker+Valid, 16810 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:41,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4881 Valid, 16810 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:44:41,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2021-12-14 15:44:41,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3431. [2021-12-14 15:44:41,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3305 states have (on average 1.7521936459909229) internal successors, (5791), 3311 states have internal predecessors, (5791), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-14 15:44:41,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5984 transitions. [2021-12-14 15:44:41,306 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5984 transitions. Word has length 134 [2021-12-14 15:44:41,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:41,307 INFO L470 AbstractCegarLoop]: Abstraction has 3431 states and 5984 transitions. [2021-12-14 15:44:41,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:41,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5984 transitions. [2021-12-14 15:44:41,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:44:41,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:41,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:41,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:44:41,311 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:41,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:41,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1909481172, now seen corresponding path program 1 times [2021-12-14 15:44:41,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:41,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784365027] [2021-12-14 15:44:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:41,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:41,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:41,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:44:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:41,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:44:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:44:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:41,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:44:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:41,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:41,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:41,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784365027] [2021-12-14 15:44:41,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784365027] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:41,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:41,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:41,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829272425] [2021-12-14 15:44:41,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:41,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:41,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:41,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:41,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:41,432 INFO L87 Difference]: Start difference. First operand 3431 states and 5984 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:42,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:42,418 INFO L93 Difference]: Finished difference Result 5222 states and 8831 transitions. [2021-12-14 15:44:42,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:44:42,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:44:42,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:42,441 INFO L225 Difference]: With dead ends: 5222 [2021-12-14 15:44:42,441 INFO L226 Difference]: Without dead ends: 3928 [2021-12-14 15:44:42,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:44:42,448 INFO L933 BasicCegarLoop]: 4398 mSDtfsCounter, 4863 mSDsluCounter, 12408 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4879 SdHoareTripleChecker+Valid, 16806 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:42,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4879 Valid, 16806 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:44:42,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2021-12-14 15:44:42,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3431. [2021-12-14 15:44:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3305 states have (on average 1.7506807866868381) internal successors, (5786), 3311 states have internal predecessors, (5786), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-14 15:44:42,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5979 transitions. [2021-12-14 15:44:42,592 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5979 transitions. Word has length 134 [2021-12-14 15:44:42,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:42,592 INFO L470 AbstractCegarLoop]: Abstraction has 3431 states and 5979 transitions. [2021-12-14 15:44:42,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:42,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5979 transitions. [2021-12-14 15:44:42,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:44:42,595 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:42,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:42,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:44:42,595 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:42,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:42,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1346901550, now seen corresponding path program 1 times [2021-12-14 15:44:42,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:42,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410793351] [2021-12-14 15:44:42,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:42,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:42,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:42,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:44:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:42,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:44:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:42,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:44:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:42,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:44:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:42,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:42,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:42,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410793351] [2021-12-14 15:44:42,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410793351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:42,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:42,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:42,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071233698] [2021-12-14 15:44:42,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:42,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:42,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:42,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:42,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:42,728 INFO L87 Difference]: Start difference. First operand 3431 states and 5979 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:43,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:43,764 INFO L93 Difference]: Finished difference Result 5216 states and 8804 transitions. [2021-12-14 15:44:43,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:44:43,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:44:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:43,779 INFO L225 Difference]: With dead ends: 5216 [2021-12-14 15:44:43,779 INFO L226 Difference]: Without dead ends: 3922 [2021-12-14 15:44:43,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:44:43,785 INFO L933 BasicCegarLoop]: 4394 mSDtfsCounter, 4743 mSDsluCounter, 16508 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 20902 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:43,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 20902 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:44:43,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2021-12-14 15:44:43,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3431. [2021-12-14 15:44:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3305 states have (on average 1.7491679273827534) internal successors, (5781), 3311 states have internal predecessors, (5781), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-14 15:44:43,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5974 transitions. [2021-12-14 15:44:43,899 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5974 transitions. Word has length 134 [2021-12-14 15:44:43,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:43,899 INFO L470 AbstractCegarLoop]: Abstraction has 3431 states and 5974 transitions. [2021-12-14 15:44:43,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:43,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5974 transitions. [2021-12-14 15:44:43,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:44:43,902 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:43,902 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:43,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:44:43,902 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:43,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:43,903 INFO L85 PathProgramCache]: Analyzing trace with hash -626263828, now seen corresponding path program 1 times [2021-12-14 15:44:43,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:43,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731583682] [2021-12-14 15:44:43,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:43,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:43,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:43,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:44:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:43,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:44:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:44,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:44:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:44,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:44:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:44,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:44,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731583682] [2021-12-14 15:44:44,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731583682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:44,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:44,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:44,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187445538] [2021-12-14 15:44:44,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:44,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:44,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:44,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:44,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:44,019 INFO L87 Difference]: Start difference. First operand 3431 states and 5974 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:46,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:46,243 INFO L93 Difference]: Finished difference Result 6562 states and 10871 transitions. [2021-12-14 15:44:46,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:44:46,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:44:46,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:46,259 INFO L225 Difference]: With dead ends: 6562 [2021-12-14 15:44:46,260 INFO L226 Difference]: Without dead ends: 5268 [2021-12-14 15:44:46,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:44:46,267 INFO L933 BasicCegarLoop]: 4635 mSDtfsCounter, 5029 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5044 SdHoareTripleChecker+Valid, 21878 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:46,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5044 Valid, 21878 Invalid, 2146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 15:44:46,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2021-12-14 15:44:46,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 4469. [2021-12-14 15:44:46,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4247 states have (on average 1.6993171650576877) internal successors, (7217), 4257 states have internal predecessors, (7217), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2021-12-14 15:44:46,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7568 transitions. [2021-12-14 15:44:46,442 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 7568 transitions. Word has length 134 [2021-12-14 15:44:46,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:46,442 INFO L470 AbstractCegarLoop]: Abstraction has 4469 states and 7568 transitions. [2021-12-14 15:44:46,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:46,443 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 7568 transitions. [2021-12-14 15:44:46,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:44:46,445 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:46,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:46,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:44:46,446 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:46,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:46,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1526842990, now seen corresponding path program 1 times [2021-12-14 15:44:46,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:46,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823754590] [2021-12-14 15:44:46,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:46,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:46,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:46,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:44:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:46,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:44:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:46,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:44:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:46,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:44:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:46,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:46,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823754590] [2021-12-14 15:44:46,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823754590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:46,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:46,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:46,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940402110] [2021-12-14 15:44:46,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:46,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:46,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:46,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:46,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:46,563 INFO L87 Difference]: Start difference. First operand 4469 states and 7568 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:49,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:49,037 INFO L93 Difference]: Finished difference Result 11236 states and 18097 transitions. [2021-12-14 15:44:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:44:49,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:44:49,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:49,064 INFO L225 Difference]: With dead ends: 11236 [2021-12-14 15:44:49,065 INFO L226 Difference]: Without dead ends: 8904 [2021-12-14 15:44:49,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:44:49,075 INFO L933 BasicCegarLoop]: 4628 mSDtfsCounter, 5358 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5382 SdHoareTripleChecker+Valid, 21863 SdHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:49,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5382 Valid, 21863 Invalid, 2136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 15:44:49,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8904 states. [2021-12-14 15:44:49,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8904 to 6520. [2021-12-14 15:44:49,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6520 states, 6114 states have (on average 1.6465489041543997) internal successors, (10067), 6132 states have internal predecessors, (10067), 286 states have call successors, (286), 102 states have call predecessors, (286), 118 states have return successors, (383), 301 states have call predecessors, (383), 286 states have call successors, (383) [2021-12-14 15:44:49,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6520 states to 6520 states and 10736 transitions. [2021-12-14 15:44:49,375 INFO L78 Accepts]: Start accepts. Automaton has 6520 states and 10736 transitions. Word has length 134 [2021-12-14 15:44:49,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:49,376 INFO L470 AbstractCegarLoop]: Abstraction has 6520 states and 10736 transitions. [2021-12-14 15:44:49,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 6520 states and 10736 transitions. [2021-12-14 15:44:49,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:44:49,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:49,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:49,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:44:49,381 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:49,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:49,382 INFO L85 PathProgramCache]: Analyzing trace with hash 903561388, now seen corresponding path program 1 times [2021-12-14 15:44:49,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:49,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583286127] [2021-12-14 15:44:49,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:49,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:49,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:49,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:44:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:49,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:44:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:49,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:44:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:49,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:44:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:49,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:49,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583286127] [2021-12-14 15:44:49,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583286127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:49,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:49,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:49,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303286186] [2021-12-14 15:44:49,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:49,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:49,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:49,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:49,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:49,500 INFO L87 Difference]: Start difference. First operand 6520 states and 10736 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:52,197 INFO L93 Difference]: Finished difference Result 19345 states and 30719 transitions. [2021-12-14 15:44:52,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:44:52,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:44:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:52,250 INFO L225 Difference]: With dead ends: 19345 [2021-12-14 15:44:52,250 INFO L226 Difference]: Without dead ends: 14962 [2021-12-14 15:44:52,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:44:52,272 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 5162 mSDsluCounter, 16806 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5176 SdHoareTripleChecker+Valid, 21405 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:52,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5176 Valid, 21405 Invalid, 2331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2226 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:44:52,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14962 states. [2021-12-14 15:44:52,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14962 to 10533. [2021-12-14 15:44:52,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10533 states, 9767 states have (on average 1.6018224633971536) internal successors, (15645), 9801 states have internal predecessors, (15645), 534 states have call successors, (534), 198 states have call predecessors, (534), 230 states have return successors, (809), 565 states have call predecessors, (809), 534 states have call successors, (809) [2021-12-14 15:44:52,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10533 states to 10533 states and 16988 transitions. [2021-12-14 15:44:52,927 INFO L78 Accepts]: Start accepts. Automaton has 10533 states and 16988 transitions. Word has length 134 [2021-12-14 15:44:52,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:52,928 INFO L470 AbstractCegarLoop]: Abstraction has 10533 states and 16988 transitions. [2021-12-14 15:44:52,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 10533 states and 16988 transitions. [2021-12-14 15:44:52,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:44:52,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:52,935 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:52,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:44:52,935 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:52,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:52,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1022002862, now seen corresponding path program 1 times [2021-12-14 15:44:52,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:52,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367182167] [2021-12-14 15:44:52,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:52,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:52,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:52,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:44:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:53,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:44:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:53,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:44:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:53,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:44:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:53,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:53,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:53,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367182167] [2021-12-14 15:44:53,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367182167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:53,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:53,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:53,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207446934] [2021-12-14 15:44:53,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:53,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:53,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:53,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:53,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:53,044 INFO L87 Difference]: Start difference. First operand 10533 states and 16988 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:56,499 INFO L93 Difference]: Finished difference Result 35028 states and 55309 transitions. [2021-12-14 15:44:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:44:56,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:44:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:56,660 INFO L225 Difference]: With dead ends: 35028 [2021-12-14 15:44:56,660 INFO L226 Difference]: Without dead ends: 26632 [2021-12-14 15:44:56,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:44:56,694 INFO L933 BasicCegarLoop]: 4616 mSDtfsCounter, 5281 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5305 SdHoareTripleChecker+Valid, 21851 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:56,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5305 Valid, 21851 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 15:44:56,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26632 states. [2021-12-14 15:44:57,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26632 to 18622. [2021-12-14 15:44:57,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18622 states, 17152 states have (on average 1.5708372201492538) internal successors, (26943), 17218 states have internal predecessors, (26943), 1014 states have call successors, (1014), 390 states have call predecessors, (1014), 454 states have return successors, (1807), 1077 states have call predecessors, (1807), 1014 states have call successors, (1807) [2021-12-14 15:44:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18622 states to 18622 states and 29764 transitions. [2021-12-14 15:44:57,784 INFO L78 Accepts]: Start accepts. Automaton has 18622 states and 29764 transitions. Word has length 134 [2021-12-14 15:44:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:57,784 INFO L470 AbstractCegarLoop]: Abstraction has 18622 states and 29764 transitions. [2021-12-14 15:44:57,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:44:57,785 INFO L276 IsEmpty]: Start isEmpty. Operand 18622 states and 29764 transitions. [2021-12-14 15:44:57,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:44:57,796 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:57,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:57,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:44:57,797 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:57,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:57,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1883670420, now seen corresponding path program 1 times [2021-12-14 15:44:57,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:57,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362421883] [2021-12-14 15:44:57,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:57,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:57,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:57,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:44:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:57,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:44:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:57,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:44:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:57,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:44:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:57,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:57,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362421883] [2021-12-14 15:44:57,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362421883] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:57,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:57,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:57,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918329340] [2021-12-14 15:44:57,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:57,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:57,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:57,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:57,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:57,907 INFO L87 Difference]: Start difference. First operand 18622 states and 29764 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:45:02,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:45:02,694 INFO L93 Difference]: Finished difference Result 65049 states and 103135 transitions. [2021-12-14 15:45:02,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:45:02,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:45:02,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:45:02,886 INFO L225 Difference]: With dead ends: 65049 [2021-12-14 15:45:02,887 INFO L226 Difference]: Without dead ends: 48564 [2021-12-14 15:45:02,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:45:02,954 INFO L933 BasicCegarLoop]: 4683 mSDtfsCounter, 5067 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 21918 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:45:02,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5081 Valid, 21918 Invalid, 2363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2281 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 15:45:03,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48564 states. [2021-12-14 15:45:04,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48564 to 34832. [2021-12-14 15:45:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34832 states, 31986 states have (on average 1.5537735259175889) internal successors, (49699), 32116 states have internal predecessors, (49699), 1942 states have call successors, (1942), 774 states have call predecessors, (1942), 902 states have return successors, (4257), 2069 states have call predecessors, (4257), 1942 states have call successors, (4257) [2021-12-14 15:45:05,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34832 states to 34832 states and 55898 transitions. [2021-12-14 15:45:05,045 INFO L78 Accepts]: Start accepts. Automaton has 34832 states and 55898 transitions. Word has length 134 [2021-12-14 15:45:05,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:45:05,045 INFO L470 AbstractCegarLoop]: Abstraction has 34832 states and 55898 transitions. [2021-12-14 15:45:05,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:45:05,046 INFO L276 IsEmpty]: Start isEmpty. Operand 34832 states and 55898 transitions. [2021-12-14 15:45:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:45:05,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:45:05,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:45:05,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:45:05,247 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:45:05,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:45:05,248 INFO L85 PathProgramCache]: Analyzing trace with hash 544588202, now seen corresponding path program 1 times [2021-12-14 15:45:05,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:45:05,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869883949] [2021-12-14 15:45:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:45:05,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:45:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:05,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:45:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:05,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:45:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:05,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:45:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:05,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:45:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:05,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:45:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:45:05,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:45:05,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869883949] [2021-12-14 15:45:05,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869883949] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:45:05,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:45:05,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:45:05,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021628137] [2021-12-14 15:45:05,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:45:05,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:45:05,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:45:05,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:45:05,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:45:05,352 INFO L87 Difference]: Start difference. First operand 34832 states and 55898 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:45:08,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:45:08,698 INFO L93 Difference]: Finished difference Result 76944 states and 124691 transitions. [2021-12-14 15:45:08,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:45:08,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:45:08,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted.