./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label02.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 6e57a5fe539c02a3f122e940e947b466cbee4432e151d616552c45a0bb305ecc --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:04:33,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:04:33,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:04:33,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:04:33,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:04:33,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:04:33,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:04:33,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:04:33,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:04:33,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:04:33,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:04:33,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:04:33,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:04:33,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:04:33,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:04:33,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:04:33,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:04:33,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:04:33,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:04:33,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:04:33,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:04:33,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:04:33,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:04:33,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:04:33,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:04:33,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:04:33,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:04:33,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:04:33,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:04:33,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:04:33,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:04:33,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:04:33,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:04:33,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:04:33,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:04:33,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:04:33,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:04:33,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:04:33,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:04:33,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:04:33,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:04:33,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 13:04:33,151 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:04:33,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:04:33,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:04:33,151 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:04:33,152 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:04:33,152 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:04:33,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:04:33,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:04:33,153 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:04:33,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:04:33,154 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:04:33,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:04:33,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:04:33,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:04:33,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:04:33,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:04:33,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:04:33,155 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:04:33,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:04:33,156 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:04:33,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:04:33,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:04:33,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:04:33,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:04:33,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:04:33,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:04:33,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:04:33,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:04:33,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:04:33,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:04:33,158 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:04:33,158 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:04:33,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:04:33,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:04:33,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e57a5fe539c02a3f122e940e947b466cbee4432e151d616552c45a0bb305ecc [2021-12-22 13:04:33,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:04:33,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:04:33,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:04:33,425 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:04:33,426 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:04:33,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label02.c [2021-12-22 13:04:33,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08c57dec6/784418300af048e4a9183e39a9d29afe/FLAGd830a5555 [2021-12-22 13:04:34,146 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:04:34,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label02.c [2021-12-22 13:04:34,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08c57dec6/784418300af048e4a9183e39a9d29afe/FLAGd830a5555 [2021-12-22 13:04:34,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08c57dec6/784418300af048e4a9183e39a9d29afe [2021-12-22 13:04:34,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:04:34,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:04:34,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:04:34,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:04:34,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:04:34,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:04:34" (1/1) ... [2021-12-22 13:04:34,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e051a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:04:34, skipping insertion in model container [2021-12-22 13:04:34,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:04:34" (1/1) ... [2021-12-22 13:04:34,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:04:34,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:04:35,006 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/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label02.c[20463,20476] [2021-12-22 13:04:35,045 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/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label02.c[27753,27766] [2021-12-22 13:04:35,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:04:35,689 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:04:35,734 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/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label02.c[20463,20476] [2021-12-22 13:04:35,750 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/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label02.c[27753,27766] [2021-12-22 13:04:36,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:04:36,136 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:04:36,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:04:36 WrapperNode [2021-12-22 13:04:36,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:04:36,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:04:36,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:04:36,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:04:36,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:04:36" (1/1) ... [2021-12-22 13:04:36,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:04:36" (1/1) ... [2021-12-22 13:04:36,603 INFO L137 Inliner]: procedures = 38, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5211 [2021-12-22 13:04:36,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:04:36,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:04:36,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:04:36,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:04:36,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:04:36" (1/1) ... [2021-12-22 13:04:36,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:04:36" (1/1) ... [2021-12-22 13:04:36,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:04:36" (1/1) ... [2021-12-22 13:04:36,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:04:36" (1/1) ... [2021-12-22 13:04:36,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:04:36" (1/1) ... [2021-12-22 13:04:36,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:04:36" (1/1) ... [2021-12-22 13:04:37,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:04:36" (1/1) ... [2021-12-22 13:04:37,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:04:37,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:04:37,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:04:37,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:04:37,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:04:36" (1/1) ... [2021-12-22 13:04:37,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:04:37,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:04:37,117 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) [2021-12-22 13:04:37,142 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 [2021-12-22 13:04:37,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:04:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:04:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:04:37,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:04:37,357 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:04:37,359 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:04:41,008 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:04:41,027 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:04:41,027 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 13:04:41,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:04:41 BoogieIcfgContainer [2021-12-22 13:04:41,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:04:41,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:04:41,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:04:41,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:04:41,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:04:34" (1/3) ... [2021-12-22 13:04:41,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c61729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:04:41, skipping insertion in model container [2021-12-22 13:04:41,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:04:36" (2/3) ... [2021-12-22 13:04:41,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c61729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:04:41, skipping insertion in model container [2021-12-22 13:04:41,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:04:41" (3/3) ... [2021-12-22 13:04:41,039 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label02.c [2021-12-22 13:04:41,043 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:04:41,043 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 13:04:41,084 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:04:41,089 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 [2021-12-22 13:04:41,089 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 13:04:41,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:41,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-22 13:04:41,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:04:41,127 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] [2021-12-22 13:04:41,128 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:04:41,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:04:41,133 INFO L85 PathProgramCache]: Analyzing trace with hash 720070723, now seen corresponding path program 1 times [2021-12-22 13:04:41,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:04:41,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522472537] [2021-12-22 13:04:41,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:04:41,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:04:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:04:41,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:04:41,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:04:41,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522472537] [2021-12-22 13:04:41,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522472537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:04:41,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:04:41,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 13:04:41,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317909900] [2021-12-22 13:04:41,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:04:41,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 13:04:41,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:04:41,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 13:04:41,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:04:41,351 INFO L87 Difference]: Start difference. First operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:41,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:04:41,418 INFO L93 Difference]: Finished difference Result 1832 states and 3464 transitions. [2021-12-22 13:04:41,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 13:04:41,420 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-12-22 13:04:41,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:04:41,437 INFO L225 Difference]: With dead ends: 1832 [2021-12-22 13:04:41,437 INFO L226 Difference]: Without dead ends: 878 [2021-12-22 13:04:41,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:04:41,447 INFO L933 BasicCegarLoop]: 1720 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:04:41,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:04:41,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-12-22 13:04:41,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2021-12-22 13:04:41,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8869863013698631) internal successors, (1653), 877 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:41,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1653 transitions. [2021-12-22 13:04:41,542 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1653 transitions. Word has length 42 [2021-12-22 13:04:41,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:04:41,543 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1653 transitions. [2021-12-22 13:04:41,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:41,543 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1653 transitions. [2021-12-22 13:04:41,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-22 13:04:41,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:04:41,545 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] [2021-12-22 13:04:41,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:04:41,546 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:04:41,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:04:41,547 INFO L85 PathProgramCache]: Analyzing trace with hash 325703937, now seen corresponding path program 1 times [2021-12-22 13:04:41,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:04:41,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247443890] [2021-12-22 13:04:41,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:04:41,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:04:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:04:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:04:41,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:04:41,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247443890] [2021-12-22 13:04:41,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247443890] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:04:41,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:04:41,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 13:04:41,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986907993] [2021-12-22 13:04:41,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:04:41,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:04:41,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:04:41,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:04:41,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:04:41,715 INFO L87 Difference]: Start difference. First operand 878 states and 1653 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:41,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:04:41,840 INFO L93 Difference]: Finished difference Result 950 states and 1765 transitions. [2021-12-22 13:04:41,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 13:04:41,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-12-22 13:04:41,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:04:41,845 INFO L225 Difference]: With dead ends: 950 [2021-12-22 13:04:41,846 INFO L226 Difference]: Without dead ends: 878 [2021-12-22 13:04:41,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:04:41,852 INFO L933 BasicCegarLoop]: 1651 mSDtfsCounter, 3 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6551 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:04:41,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6551 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:04:41,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-12-22 13:04:41,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2021-12-22 13:04:41,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8299086757990868) internal successors, (1603), 877 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1603 transitions. [2021-12-22 13:04:41,908 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1603 transitions. Word has length 42 [2021-12-22 13:04:41,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:04:41,909 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1603 transitions. [2021-12-22 13:04:41,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:41,909 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1603 transitions. [2021-12-22 13:04:41,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-22 13:04:41,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:04:41,911 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] [2021-12-22 13:04:41,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:04:41,912 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:04:41,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:04:41,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1873981919, now seen corresponding path program 1 times [2021-12-22 13:04:41,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:04:41,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910874217] [2021-12-22 13:04:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:04:41,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:04:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:04:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:04:42,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:04:42,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910874217] [2021-12-22 13:04:42,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910874217] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:04:42,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:04:42,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:04:42,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945086840] [2021-12-22 13:04:42,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:04:42,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 13:04:42,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:04:42,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 13:04:42,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 13:04:42,109 INFO L87 Difference]: Start difference. First operand 878 states and 1603 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:48,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:04:48,155 INFO L93 Difference]: Finished difference Result 3133 states and 5912 transitions. [2021-12-22 13:04:48,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 13:04:48,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-22 13:04:48,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:04:48,166 INFO L225 Difference]: With dead ends: 3133 [2021-12-22 13:04:48,167 INFO L226 Difference]: Without dead ends: 2380 [2021-12-22 13:04:48,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:04:48,169 INFO L933 BasicCegarLoop]: 857 mSDtfsCounter, 2503 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2503 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-22 13:04:48,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2503 Valid, 875 Invalid, 6618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5518 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-12-22 13:04:48,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2021-12-22 13:04:48,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2380. [2021-12-22 13:04:48,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2378 states have (on average 1.5681244743481917) internal successors, (3729), 2379 states have internal predecessors, (3729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3729 transitions. [2021-12-22 13:04:48,231 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3729 transitions. Word has length 63 [2021-12-22 13:04:48,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:04:48,232 INFO L470 AbstractCegarLoop]: Abstraction has 2380 states and 3729 transitions. [2021-12-22 13:04:48,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:48,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3729 transitions. [2021-12-22 13:04:48,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 13:04:48,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:04:48,235 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] [2021-12-22 13:04:48,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 13:04:48,236 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:04:48,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:04:48,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1207745120, now seen corresponding path program 1 times [2021-12-22 13:04:48,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:04:48,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773441010] [2021-12-22 13:04:48,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:04:48,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:04:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:04:48,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:04:48,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:04:48,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773441010] [2021-12-22 13:04:48,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773441010] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:04:48,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:04:48,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:04:48,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520620253] [2021-12-22 13:04:48,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:04:48,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:04:48,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:04:48,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:04:48,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:04:48,341 INFO L87 Difference]: Start difference. First operand 2380 states and 3729 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:48,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:04:48,375 INFO L93 Difference]: Finished difference Result 2510 states and 3935 transitions. [2021-12-22 13:04:48,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:04:48,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-22 13:04:48,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:04:48,385 INFO L225 Difference]: With dead ends: 2510 [2021-12-22 13:04:48,386 INFO L226 Difference]: Without dead ends: 2442 [2021-12-22 13:04:48,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:04:48,393 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 1537 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:04:48,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1803 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:04:48,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2021-12-22 13:04:48,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2440. [2021-12-22 13:04:48,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 2438 states have (on average 1.5689089417555373) internal successors, (3825), 2439 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:48,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 3825 transitions. [2021-12-22 13:04:48,484 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 3825 transitions. Word has length 91 [2021-12-22 13:04:48,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:04:48,486 INFO L470 AbstractCegarLoop]: Abstraction has 2440 states and 3825 transitions. [2021-12-22 13:04:48,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:48,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 3825 transitions. [2021-12-22 13:04:48,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 13:04:48,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:04:48,491 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] [2021-12-22 13:04:48,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 13:04:48,491 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:04:48,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:04:48,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1564953708, now seen corresponding path program 1 times [2021-12-22 13:04:48,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:04:48,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871632357] [2021-12-22 13:04:48,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:04:48,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:04:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:04:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:04:48,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:04:48,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871632357] [2021-12-22 13:04:48,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871632357] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:04:48,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:04:48,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:04:48,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218953254] [2021-12-22 13:04:48,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:04:48,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:04:48,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:04:48,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:04:48,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:04:48,614 INFO L87 Difference]: Start difference. First operand 2440 states and 3825 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:48,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:04:48,654 INFO L93 Difference]: Finished difference Result 2684 states and 4213 transitions. [2021-12-22 13:04:48,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:04:48,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-22 13:04:48,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:04:48,664 INFO L225 Difference]: With dead ends: 2684 [2021-12-22 13:04:48,665 INFO L226 Difference]: Without dead ends: 2556 [2021-12-22 13:04:48,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:04:48,667 INFO L933 BasicCegarLoop]: 1692 mSDtfsCounter, 1533 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:04:48,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 1802 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:04:48,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-12-22 13:04:48,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2554. [2021-12-22 13:04:48,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2554 states, 2552 states have (on average 1.5697492163009403) internal successors, (4006), 2553 states have internal predecessors, (4006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:48,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 4006 transitions. [2021-12-22 13:04:48,726 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 4006 transitions. Word has length 91 [2021-12-22 13:04:48,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:04:48,726 INFO L470 AbstractCegarLoop]: Abstraction has 2554 states and 4006 transitions. [2021-12-22 13:04:48,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:48,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 4006 transitions. [2021-12-22 13:04:48,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 13:04:48,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:04:48,728 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] [2021-12-22 13:04:48,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 13:04:48,728 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:04:48,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:04:48,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1479108296, now seen corresponding path program 1 times [2021-12-22 13:04:48,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:04:48,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981855023] [2021-12-22 13:04:48,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:04:48,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:04:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:04:48,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:04:48,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:04:48,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981855023] [2021-12-22 13:04:48,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981855023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:04:48,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:04:48,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:04:48,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385833371] [2021-12-22 13:04:48,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:04:48,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:04:48,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:04:48,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:04:48,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:04:48,796 INFO L87 Difference]: Start difference. First operand 2554 states and 4006 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:48,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:04:48,845 INFO L93 Difference]: Finished difference Result 3014 states and 4736 transitions. [2021-12-22 13:04:48,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:04:48,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-22 13:04:48,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:04:48,855 INFO L225 Difference]: With dead ends: 3014 [2021-12-22 13:04:48,856 INFO L226 Difference]: Without dead ends: 2772 [2021-12-22 13:04:48,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:04:48,858 INFO L933 BasicCegarLoop]: 1687 mSDtfsCounter, 1529 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:04:48,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:04:48,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2021-12-22 13:04:48,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2770. [2021-12-22 13:04:48,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2770 states, 2768 states have (on average 1.5700867052023122) internal successors, (4346), 2769 states have internal predecessors, (4346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 4346 transitions. [2021-12-22 13:04:48,927 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 4346 transitions. Word has length 91 [2021-12-22 13:04:48,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:04:48,928 INFO L470 AbstractCegarLoop]: Abstraction has 2770 states and 4346 transitions. [2021-12-22 13:04:48,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:48,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 4346 transitions. [2021-12-22 13:04:48,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 13:04:48,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:04:48,929 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] [2021-12-22 13:04:48,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 13:04:48,930 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:04:48,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:04:48,930 INFO L85 PathProgramCache]: Analyzing trace with hash 733525566, now seen corresponding path program 1 times [2021-12-22 13:04:48,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:04:48,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868585860] [2021-12-22 13:04:48,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:04:48,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:04:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:04:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:04:48,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:04:48,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868585860] [2021-12-22 13:04:48,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868585860] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:04:48,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:04:48,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:04:48,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073853680] [2021-12-22 13:04:48,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:04:48,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:04:48,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:04:48,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:04:48,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:04:48,978 INFO L87 Difference]: Start difference. First operand 2770 states and 4346 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:49,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:04:49,041 INFO L93 Difference]: Finished difference Result 3638 states and 5716 transitions. [2021-12-22 13:04:49,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:04:49,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-22 13:04:49,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:04:49,054 INFO L225 Difference]: With dead ends: 3638 [2021-12-22 13:04:49,054 INFO L226 Difference]: Without dead ends: 3180 [2021-12-22 13:04:49,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:04:49,057 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 1525 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:04:49,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1800 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:04:49,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2021-12-22 13:04:49,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 3178. [2021-12-22 13:04:49,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3178 states, 3176 states have (on average 1.568639798488665) internal successors, (4982), 3177 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:49,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 4982 transitions. [2021-12-22 13:04:49,151 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 4982 transitions. Word has length 91 [2021-12-22 13:04:49,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:04:49,151 INFO L470 AbstractCegarLoop]: Abstraction has 3178 states and 4982 transitions. [2021-12-22 13:04:49,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:49,151 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 4982 transitions. [2021-12-22 13:04:49,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 13:04:49,152 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:04:49,153 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] [2021-12-22 13:04:49,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 13:04:49,153 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:04:49,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:04:49,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1206505292, now seen corresponding path program 1 times [2021-12-22 13:04:49,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:04:49,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686138684] [2021-12-22 13:04:49,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:04:49,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:04:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:04:49,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:04:49,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:04:49,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686138684] [2021-12-22 13:04:49,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686138684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:04:49,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:04:49,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:04:49,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265662252] [2021-12-22 13:04:49,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:04:49,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:04:49,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:04:49,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:04:49,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:04:49,199 INFO L87 Difference]: Start difference. First operand 3178 states and 4982 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:49,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:04:49,298 INFO L93 Difference]: Finished difference Result 4814 states and 7544 transitions. [2021-12-22 13:04:49,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:04:49,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-22 13:04:49,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:04:49,313 INFO L225 Difference]: With dead ends: 4814 [2021-12-22 13:04:49,314 INFO L226 Difference]: Without dead ends: 3948 [2021-12-22 13:04:49,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:04:49,317 INFO L933 BasicCegarLoop]: 1677 mSDtfsCounter, 1521 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:04:49,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 1799 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:04:49,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2021-12-22 13:04:49,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3946. [2021-12-22 13:04:49,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3946 states, 3944 states have (on average 1.5633874239350913) internal successors, (6166), 3945 states have internal predecessors, (6166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:49,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 6166 transitions. [2021-12-22 13:04:49,466 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 6166 transitions. Word has length 91 [2021-12-22 13:04:49,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:04:49,466 INFO L470 AbstractCegarLoop]: Abstraction has 3946 states and 6166 transitions. [2021-12-22 13:04:49,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:49,467 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 6166 transitions. [2021-12-22 13:04:49,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 13:04:49,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:04:49,468 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] [2021-12-22 13:04:49,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 13:04:49,468 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:04:49,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:04:49,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1494177322, now seen corresponding path program 1 times [2021-12-22 13:04:49,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:04:49,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103059686] [2021-12-22 13:04:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:04:49,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:04:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:04:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:04:49,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:04:49,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103059686] [2021-12-22 13:04:49,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103059686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:04:49,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:04:49,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 13:04:49,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043356250] [2021-12-22 13:04:49,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:04:49,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 13:04:49,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:04:49,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 13:04:49,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:04:49,559 INFO L87 Difference]: Start difference. First operand 3946 states and 6166 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:51,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:04:51,249 INFO L93 Difference]: Finished difference Result 26822 states and 41796 transitions. [2021-12-22 13:04:51,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 13:04:51,250 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-22 13:04:51,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:04:51,334 INFO L225 Difference]: With dead ends: 26822 [2021-12-22 13:04:51,335 INFO L226 Difference]: Without dead ends: 25188 [2021-12-22 13:04:51,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-22 13:04:51,351 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 13389 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13389 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:04:51,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13389 Valid, 3111 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:04:51,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25188 states. [2021-12-22 13:04:51,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25188 to 5578. [2021-12-22 13:04:52,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5578 states, 5576 states have (on average 1.550573888091822) internal successors, (8646), 5577 states have internal predecessors, (8646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:52,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5578 states to 5578 states and 8646 transitions. [2021-12-22 13:04:52,022 INFO L78 Accepts]: Start accepts. Automaton has 5578 states and 8646 transitions. Word has length 91 [2021-12-22 13:04:52,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:04:52,022 INFO L470 AbstractCegarLoop]: Abstraction has 5578 states and 8646 transitions. [2021-12-22 13:04:52,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:52,023 INFO L276 IsEmpty]: Start isEmpty. Operand 5578 states and 8646 transitions. [2021-12-22 13:04:52,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 13:04:52,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:04:52,024 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] [2021-12-22 13:04:52,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 13:04:52,027 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:04:52,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:04:52,028 INFO L85 PathProgramCache]: Analyzing trace with hash -30360326, now seen corresponding path program 1 times [2021-12-22 13:04:52,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:04:52,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077818856] [2021-12-22 13:04:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:04:52,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:04:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:04:52,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:04:52,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:04:52,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077818856] [2021-12-22 13:04:52,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077818856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:04:52,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:04:52,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:04:52,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138788759] [2021-12-22 13:04:52,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:04:52,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:04:52,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:04:52,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:04:52,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:04:52,085 INFO L87 Difference]: Start difference. First operand 5578 states and 8646 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:52,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:04:52,547 INFO L93 Difference]: Finished difference Result 10400 states and 16058 transitions. [2021-12-22 13:04:52,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:04:52,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-22 13:04:52,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:04:52,564 INFO L225 Difference]: With dead ends: 10400 [2021-12-22 13:04:52,565 INFO L226 Difference]: Without dead ends: 7134 [2021-12-22 13:04:52,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:04:52,572 INFO L933 BasicCegarLoop]: 1632 mSDtfsCounter, 1505 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:04:52,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 1735 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:04:52,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2021-12-22 13:04:53,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 7132. [2021-12-22 13:04:53,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 7130 states have (on average 1.5405329593267882) internal successors, (10984), 7131 states have internal predecessors, (10984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:53,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 10984 transitions. [2021-12-22 13:04:53,048 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 10984 transitions. Word has length 93 [2021-12-22 13:04:53,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:04:53,049 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 10984 transitions. [2021-12-22 13:04:53,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:53,050 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 10984 transitions. [2021-12-22 13:04:53,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 13:04:53,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:04:53,051 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] [2021-12-22 13:04:53,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 13:04:53,052 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:04:53,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:04:53,052 INFO L85 PathProgramCache]: Analyzing trace with hash 36133186, now seen corresponding path program 1 times [2021-12-22 13:04:53,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:04:53,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817345868] [2021-12-22 13:04:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:04:53,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:04:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:04:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:04:53,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:04:53,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817345868] [2021-12-22 13:04:53,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817345868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:04:53,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:04:53,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 13:04:53,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477029156] [2021-12-22 13:04:53,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:04:53,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 13:04:53,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:04:53,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 13:04:53,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:04:53,352 INFO L87 Difference]: Start difference. First operand 7132 states and 10984 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:54,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:04:54,138 INFO L93 Difference]: Finished difference Result 11952 states and 18346 transitions. [2021-12-22 13:04:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:04:54,138 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-22 13:04:54,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:04:54,155 INFO L225 Difference]: With dead ends: 11952 [2021-12-22 13:04:54,155 INFO L226 Difference]: Without dead ends: 7134 [2021-12-22 13:04:54,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:04:54,164 INFO L933 BasicCegarLoop]: 1643 mSDtfsCounter, 9450 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9450 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:04:54,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9450 Valid, 2273 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:04:54,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2021-12-22 13:04:54,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 7132. [2021-12-22 13:04:54,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 7130 states have (on average 1.5338008415147264) internal successors, (10936), 7131 states have internal predecessors, (10936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:54,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 10936 transitions. [2021-12-22 13:04:54,660 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 10936 transitions. Word has length 93 [2021-12-22 13:04:54,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:04:54,660 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 10936 transitions. [2021-12-22 13:04:54,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:54,661 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 10936 transitions. [2021-12-22 13:04:54,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 13:04:54,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:04:54,662 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] [2021-12-22 13:04:54,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 13:04:54,663 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:04:54,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:04:54,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1825047262, now seen corresponding path program 1 times [2021-12-22 13:04:54,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:04:54,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469419868] [2021-12-22 13:04:54,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:04:54,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:04:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:04:54,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:04:54,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:04:54,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469419868] [2021-12-22 13:04:54,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469419868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:04:54,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:04:54,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:04:54,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73478008] [2021-12-22 13:04:54,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:04:54,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:04:54,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:04:54,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:04:54,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:04:54,710 INFO L87 Difference]: Start difference. First operand 7132 states and 10936 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:55,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:04:55,352 INFO L93 Difference]: Finished difference Result 16192 states and 24602 transitions. [2021-12-22 13:04:55,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:04:55,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-22 13:04:55,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:04:55,377 INFO L225 Difference]: With dead ends: 16192 [2021-12-22 13:04:55,377 INFO L226 Difference]: Without dead ends: 11374 [2021-12-22 13:04:55,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:04:55,389 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 1513 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:04:55,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:04:55,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11374 states. [2021-12-22 13:04:56,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11374 to 11372. [2021-12-22 13:04:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11372 states, 11370 states have (on average 1.5120492524186455) internal successors, (17192), 11371 states have internal predecessors, (17192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:56,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11372 states to 11372 states and 17192 transitions. [2021-12-22 13:04:56,154 INFO L78 Accepts]: Start accepts. Automaton has 11372 states and 17192 transitions. Word has length 93 [2021-12-22 13:04:56,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:04:56,155 INFO L470 AbstractCegarLoop]: Abstraction has 11372 states and 17192 transitions. [2021-12-22 13:04:56,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:56,155 INFO L276 IsEmpty]: Start isEmpty. Operand 11372 states and 17192 transitions. [2021-12-22 13:04:56,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 13:04:56,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:04:56,156 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] [2021-12-22 13:04:56,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 13:04:56,157 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:04:56,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:04:56,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1222412418, now seen corresponding path program 1 times [2021-12-22 13:04:56,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:04:56,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467350845] [2021-12-22 13:04:56,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:04:56,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:04:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:04:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:04:56,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:04:56,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467350845] [2021-12-22 13:04:56,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467350845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:04:56,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:04:56,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:04:56,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964506570] [2021-12-22 13:04:56,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:04:56,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:04:56,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:04:56,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:04:56,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:04:56,202 INFO L87 Difference]: Start difference. First operand 11372 states and 17192 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:57,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:04:57,323 INFO L93 Difference]: Finished difference Result 28336 states and 42410 transitions. [2021-12-22 13:04:57,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:04:57,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-22 13:04:57,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:04:57,358 INFO L225 Difference]: With dead ends: 28336 [2021-12-22 13:04:57,358 INFO L226 Difference]: Without dead ends: 19278 [2021-12-22 13:04:57,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:04:57,373 INFO L933 BasicCegarLoop]: 1672 mSDtfsCounter, 1517 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:04:57,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 1798 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:04:57,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19278 states. [2021-12-22 13:04:58,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19278 to 19276. [2021-12-22 13:04:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19276 states, 19274 states have (on average 1.486354674691294) internal successors, (28648), 19275 states have internal predecessors, (28648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:58,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19276 states to 19276 states and 28648 transitions. [2021-12-22 13:04:58,841 INFO L78 Accepts]: Start accepts. Automaton has 19276 states and 28648 transitions. Word has length 93 [2021-12-22 13:04:58,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:04:58,841 INFO L470 AbstractCegarLoop]: Abstraction has 19276 states and 28648 transitions. [2021-12-22 13:04:58,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:04:58,842 INFO L276 IsEmpty]: Start isEmpty. Operand 19276 states and 28648 transitions. [2021-12-22 13:04:58,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-22 13:04:58,843 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:04:58,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:04:58,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 13:04:58,843 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:04:58,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:04:58,844 INFO L85 PathProgramCache]: Analyzing trace with hash 705405902, now seen corresponding path program 1 times [2021-12-22 13:04:58,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:04:58,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963169857] [2021-12-22 13:04:58,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:04:58,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:04:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:04:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:04:58,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:04:58,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963169857] [2021-12-22 13:04:58,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963169857] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:04:58,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:04:58,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 13:04:58,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024598712] [2021-12-22 13:04:58,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:04:58,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:04:58,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:04:58,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:04:58,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:04:58,924 INFO L87 Difference]: Start difference. First operand 19276 states and 28648 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:05:01,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:05:01,600 INFO L93 Difference]: Finished difference Result 51856 states and 76842 transitions. [2021-12-22 13:05:01,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:05:01,600 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-22 13:05:01,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:05:01,668 INFO L225 Difference]: With dead ends: 51856 [2021-12-22 13:05:01,669 INFO L226 Difference]: Without dead ends: 34894 [2021-12-22 13:05:01,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:05:01,695 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 5126 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5126 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:05:01,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5126 Valid, 3171 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:05:01,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34894 states. [2021-12-22 13:05:04,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34894 to 30796. [2021-12-22 13:05:04,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30796 states, 30794 states have (on average 1.4789894135221147) internal successors, (45544), 30795 states have internal predecessors, (45544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:05:04,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30796 states to 30796 states and 45544 transitions. [2021-12-22 13:05:04,196 INFO L78 Accepts]: Start accepts. Automaton has 30796 states and 45544 transitions. Word has length 94 [2021-12-22 13:05:04,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:05:04,198 INFO L470 AbstractCegarLoop]: Abstraction has 30796 states and 45544 transitions. [2021-12-22 13:05:04,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:05:04,199 INFO L276 IsEmpty]: Start isEmpty. Operand 30796 states and 45544 transitions. [2021-12-22 13:05:04,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-22 13:05:04,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:05:04,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:05:04,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 13:05:04,200 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:05:04,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:05:04,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1549411404, now seen corresponding path program 1 times [2021-12-22 13:05:04,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:05:04,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99516275] [2021-12-22 13:05:04,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:05:04,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:05:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:05:04,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:05:04,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:05:04,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99516275] [2021-12-22 13:05:04,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99516275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:05:04,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:05:04,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 13:05:04,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171995753] [2021-12-22 13:05:04,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:05:04,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:05:04,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:05:04,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:05:04,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:05:04,272 INFO L87 Difference]: Start difference. First operand 30796 states and 45544 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:05:06,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:05:06,762 INFO L93 Difference]: Finished difference Result 59278 states and 87465 transitions. [2021-12-22 13:05:06,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:05:06,763 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-22 13:05:06,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:05:06,798 INFO L225 Difference]: With dead ends: 59278 [2021-12-22 13:05:06,798 INFO L226 Difference]: Without dead ends: 30796 [2021-12-22 13:05:06,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:05:06,827 INFO L933 BasicCegarLoop]: 1558 mSDtfsCounter, 4949 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:05:06,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 3083 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:05:06,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30796 states. [2021-12-22 13:05:09,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30796 to 30796. [2021-12-22 13:05:09,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30796 states, 30794 states have (on average 1.4685977787880755) internal successors, (45224), 30795 states have internal predecessors, (45224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:05:09,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30796 states to 30796 states and 45224 transitions. [2021-12-22 13:05:09,503 INFO L78 Accepts]: Start accepts. Automaton has 30796 states and 45224 transitions. Word has length 94 [2021-12-22 13:05:09,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:05:09,503 INFO L470 AbstractCegarLoop]: Abstraction has 30796 states and 45224 transitions. [2021-12-22 13:05:09,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:05:09,503 INFO L276 IsEmpty]: Start isEmpty. Operand 30796 states and 45224 transitions. [2021-12-22 13:05:09,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-22 13:05:09,504 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:05:09,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:05:09,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 13:05:09,505 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:05:09,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:05:09,505 INFO L85 PathProgramCache]: Analyzing trace with hash 847811530, now seen corresponding path program 1 times [2021-12-22 13:05:09,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:05:09,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324692569] [2021-12-22 13:05:09,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:05:09,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:05:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:05:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:05:09,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:05:09,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324692569] [2021-12-22 13:05:09,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324692569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:05:09,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:05:09,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 13:05:09,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635587908] [2021-12-22 13:05:09,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:05:09,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:05:09,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:05:09,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:05:09,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:05:09,596 INFO L87 Difference]: Start difference. First operand 30796 states and 45224 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:05:14,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:05:14,987 INFO L93 Difference]: Finished difference Result 57839 states and 83922 transitions. [2021-12-22 13:05:14,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 13:05:14,987 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-22 13:05:14,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:05:15,064 INFO L225 Difference]: With dead ends: 57839 [2021-12-22 13:05:15,065 INFO L226 Difference]: Without dead ends: 57837 [2021-12-22 13:05:15,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-22 13:05:15,081 INFO L933 BasicCegarLoop]: 1634 mSDtfsCounter, 829 mSDsluCounter, 9260 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 10894 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:05:15,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 10894 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:05:15,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57837 states. [2021-12-22 13:05:17,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57837 to 32332. [2021-12-22 13:05:18,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32332 states, 32330 states have (on average 1.444355088153418) internal successors, (46696), 32331 states have internal predecessors, (46696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:05:18,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32332 states to 32332 states and 46696 transitions. [2021-12-22 13:05:18,059 INFO L78 Accepts]: Start accepts. Automaton has 32332 states and 46696 transitions. Word has length 94 [2021-12-22 13:05:18,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:05:18,060 INFO L470 AbstractCegarLoop]: Abstraction has 32332 states and 46696 transitions. [2021-12-22 13:05:18,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:05:18,060 INFO L276 IsEmpty]: Start isEmpty. Operand 32332 states and 46696 transitions. [2021-12-22 13:05:18,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-22 13:05:18,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:05:18,074 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:05:18,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 13:05:18,075 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:05:18,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:05:18,075 INFO L85 PathProgramCache]: Analyzing trace with hash 101873069, now seen corresponding path program 1 times [2021-12-22 13:05:18,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:05:18,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326587919] [2021-12-22 13:05:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:05:18,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:05:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:05:18,182 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 13:05:18,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:05:18,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326587919] [2021-12-22 13:05:18,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326587919] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:05:18,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:05:18,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 13:05:18,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730585160] [2021-12-22 13:05:18,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:05:18,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 13:05:18,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:05:18,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 13:05:18,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:05:18,185 INFO L87 Difference]: Start difference. First operand 32332 states and 46696 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)