./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label37.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/eca-rers2012/Problem12_label37.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 216d354bd2b39cc08159a7e1d05b12b6bb34b7a88f8458e31e862be3f2691415 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 09:17:56,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 09:17:56,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 09:17:56,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 09:17:56,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 09:17:56,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 09:17:56,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 09:17:56,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 09:17:56,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 09:17:56,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 09:17:56,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 09:17:56,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 09:17:56,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 09:17:56,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 09:17:56,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 09:17:56,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 09:17:56,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 09:17:56,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 09:17:56,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 09:17:56,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 09:17:56,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 09:17:56,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 09:17:56,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 09:17:56,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 09:17:56,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 09:17:56,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 09:17:56,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 09:17:56,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 09:17:56,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 09:17:56,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 09:17:56,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 09:17:56,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 09:17:56,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 09:17:56,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 09:17:56,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 09:17:56,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 09:17:56,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 09:17:56,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 09:17:56,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 09:17:56,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 09:17:56,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 09:17:56,712 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 09:17:56,733 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 09:17:56,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 09:17:56,747 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 09:17:56,747 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 09:17:56,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 09:17:56,748 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 09:17:56,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 09:17:56,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 09:17:56,749 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 09:17:56,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 09:17:56,749 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 09:17:56,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 09:17:56,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 09:17:56,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 09:17:56,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 09:17:56,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 09:17:56,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 09:17:56,750 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 09:17:56,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 09:17:56,750 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 09:17:56,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 09:17:56,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 09:17:56,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 09:17:56,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 09:17:56,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 09:17:56,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 09:17:56,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 09:17:56,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 09:17:56,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 09:17:56,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 09:17:56,751 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 09:17:56,751 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 09:17:56,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 09:17:56,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 09:17:56,751 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216d354bd2b39cc08159a7e1d05b12b6bb34b7a88f8458e31e862be3f2691415 [2021-12-22 09:17:56,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 09:17:56,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 09:17:56,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 09:17:56,954 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 09:17:56,955 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 09:17:56,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label37.c [2021-12-22 09:17:57,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f45c69a5/d452b21954d04e93b763ba449f050903/FLAG7a3fcb097 [2021-12-22 09:17:57,584 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 09:17:57,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label37.c [2021-12-22 09:17:57,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f45c69a5/d452b21954d04e93b763ba449f050903/FLAG7a3fcb097 [2021-12-22 09:17:57,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f45c69a5/d452b21954d04e93b763ba449f050903 [2021-12-22 09:17:57,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 09:17:57,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 09:17:57,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 09:17:57,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 09:17:57,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 09:17:57,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:17:57" (1/1) ... [2021-12-22 09:17:57,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a1d1981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:17:57, skipping insertion in model container [2021-12-22 09:17:57,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:17:57" (1/1) ... [2021-12-22 09:17:57,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 09:17:57,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 09:17:58,045 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/eca-rers2012/Problem12_label37.c[2005,2018] [2021-12-22 09:17:58,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 09:17:58,600 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 09:17:58,619 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/eca-rers2012/Problem12_label37.c[2005,2018] [2021-12-22 09:17:58,952 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 09:17:58,976 INFO L208 MainTranslator]: Completed translation [2021-12-22 09:17:58,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:17:58 WrapperNode [2021-12-22 09:17:58,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 09:17:58,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 09:17:58,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 09:17:58,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 09:17:58,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:17:58" (1/1) ... [2021-12-22 09:17:59,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:17:58" (1/1) ... [2021-12-22 09:17:59,256 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2021-12-22 09:17:59,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 09:17:59,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 09:17:59,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 09:17:59,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 09:17:59,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:17:58" (1/1) ... [2021-12-22 09:17:59,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:17:58" (1/1) ... [2021-12-22 09:17:59,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:17:58" (1/1) ... [2021-12-22 09:17:59,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:17:58" (1/1) ... [2021-12-22 09:17:59,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:17:58" (1/1) ... [2021-12-22 09:17:59,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:17:58" (1/1) ... [2021-12-22 09:17:59,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:17:58" (1/1) ... [2021-12-22 09:17:59,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 09:17:59,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 09:17:59,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 09:17:59,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 09:17:59,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:17:58" (1/1) ... [2021-12-22 09:17:59,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 09:17:59,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:17:59,599 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 09:17:59,607 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 09:17:59,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 09:17:59,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 09:17:59,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 09:17:59,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 09:17:59,702 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 09:17:59,703 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 09:18:02,162 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 09:18:02,220 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 09:18:02,220 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 09:18:02,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:18:02 BoogieIcfgContainer [2021-12-22 09:18:02,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 09:18:02,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 09:18:02,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 09:18:02,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 09:18:02,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:17:57" (1/3) ... [2021-12-22 09:18:02,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605c799e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:18:02, skipping insertion in model container [2021-12-22 09:18:02,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:17:58" (2/3) ... [2021-12-22 09:18:02,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605c799e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:18:02, skipping insertion in model container [2021-12-22 09:18:02,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:18:02" (3/3) ... [2021-12-22 09:18:02,232 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label37.c [2021-12-22 09:18:02,235 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 09:18:02,235 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 09:18:02,288 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 09:18:02,295 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 09:18:02,295 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 09:18:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 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 09:18:02,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 09:18:02,330 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:18:02,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:18:02,331 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:18:02,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:18:02,335 INFO L85 PathProgramCache]: Analyzing trace with hash -461255479, now seen corresponding path program 1 times [2021-12-22 09:18:02,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:18:02,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613060340] [2021-12-22 09:18:02,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:02,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:18:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 09:18:02,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:18:02,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613060340] [2021-12-22 09:18:02,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613060340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:18:02,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:18:02,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 09:18:02,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929667161] [2021-12-22 09:18:02,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:18:02,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:18:02,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:18:02,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:18:02,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:18:02,495 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 09:18:05,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:18:05,504 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2021-12-22 09:18:05,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:18:05,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2021-12-22 09:18:05,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:18:05,562 INFO L225 Difference]: With dead ends: 2388 [2021-12-22 09:18:05,563 INFO L226 Difference]: Without dead ends: 1506 [2021-12-22 09:18:05,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:18:05,571 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 846 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-22 09:18:05,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 102 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-22 09:18:05,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2021-12-22 09:18:05,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2021-12-22 09:18:05,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.869767441860465) internal successors, (2814), 1505 states have internal predecessors, (2814), 0 states have call successors, (0), 0 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 09:18:05,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2814 transitions. [2021-12-22 09:18:05,647 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2814 transitions. Word has length 13 [2021-12-22 09:18:05,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:18:05,647 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 2814 transitions. [2021-12-22 09:18:05,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 09:18:05,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2814 transitions. [2021-12-22 09:18:05,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-22 09:18:05,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:18:05,650 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:18:05,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 09:18:05,651 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:18:05,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:18:05,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1317915872, now seen corresponding path program 1 times [2021-12-22 09:18:05,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:18:05,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937368046] [2021-12-22 09:18:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:05,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:18:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 09:18:05,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:18:05,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937368046] [2021-12-22 09:18:05,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937368046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:18:05,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:18:05,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 09:18:05,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862951705] [2021-12-22 09:18:05,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:18:05,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:18:05,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:18:05,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:18:05,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:18:05,748 INFO L87 Difference]: Start difference. First operand 1506 states and 2814 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:18:08,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:18:08,387 INFO L93 Difference]: Finished difference Result 4514 states and 8438 transitions. [2021-12-22 09:18:08,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:18:08,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-12-22 09:18:08,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:18:08,396 INFO L225 Difference]: With dead ends: 4514 [2021-12-22 09:18:08,396 INFO L226 Difference]: Without dead ends: 3010 [2021-12-22 09:18:08,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:18:08,402 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 918 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-22 09:18:08,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 354 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-22 09:18:08,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2021-12-22 09:18:08,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 3008. [2021-12-22 09:18:08,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.6531426671100764) internal successors, (4971), 3007 states have internal predecessors, (4971), 0 states have call successors, (0), 0 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 09:18:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4971 transitions. [2021-12-22 09:18:08,445 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4971 transitions. Word has length 86 [2021-12-22 09:18:08,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:18:08,445 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 4971 transitions. [2021-12-22 09:18:08,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:18:08,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4971 transitions. [2021-12-22 09:18:08,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-22 09:18:08,453 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:18:08,453 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:18:08,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 09:18:08,455 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:18:08,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:18:08,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2032696291, now seen corresponding path program 1 times [2021-12-22 09:18:08,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:18:08,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146845146] [2021-12-22 09:18:08,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:08,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:18:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:08,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 09:18:08,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:18:08,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146845146] [2021-12-22 09:18:08,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146845146] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:18:08,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:18:08,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:18:08,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084867945] [2021-12-22 09:18:08,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:18:08,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:18:08,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:18:08,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:18:08,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:18:08,585 INFO L87 Difference]: Start difference. First operand 3008 states and 4971 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:18:12,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:18:12,570 INFO L93 Difference]: Finished difference Result 8267 states and 13429 transitions. [2021-12-22 09:18:12,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:18:12,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-12-22 09:18:12,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:18:12,584 INFO L225 Difference]: With dead ends: 8267 [2021-12-22 09:18:12,584 INFO L226 Difference]: Without dead ends: 5261 [2021-12-22 09:18:12,586 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 09:18:12,587 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 2154 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4998 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 5849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-22 09:18:12,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2154 Valid, 353 Invalid, 5849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 4998 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-22 09:18:12,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2021-12-22 09:18:12,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2021-12-22 09:18:12,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.5102661596958176) internal successors, (7944), 5260 states have internal predecessors, (7944), 0 states have call successors, (0), 0 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 09:18:12,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 7944 transitions. [2021-12-22 09:18:12,649 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 7944 transitions. Word has length 99 [2021-12-22 09:18:12,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:18:12,650 INFO L470 AbstractCegarLoop]: Abstraction has 5261 states and 7944 transitions. [2021-12-22 09:18:12,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:18:12,650 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 7944 transitions. [2021-12-22 09:18:12,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-22 09:18:12,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:18:12,652 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:12,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 09:18:12,652 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:18:12,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:18:12,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1005399562, now seen corresponding path program 1 times [2021-12-22 09:18:12,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:18:12,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563028206] [2021-12-22 09:18:12,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:12,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:18:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:12,820 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 09:18:12,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:18:12,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563028206] [2021-12-22 09:18:12,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563028206] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:18:12,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320287403] [2021-12-22 09:18:12,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:12,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:18:12,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:18:12,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 09:18:12,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 09:18:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:12,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 09:18:12,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:18:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-22 09:18:13,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:18:13,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320287403] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:18:13,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:18:13,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2021-12-22 09:18:13,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147886167] [2021-12-22 09:18:13,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:18:13,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:18:13,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:18:13,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:18:13,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 09:18:13,202 INFO L87 Difference]: Start difference. First operand 5261 states and 7944 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 09:18:15,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:18:15,846 INFO L93 Difference]: Finished difference Result 14275 states and 22313 transitions. [2021-12-22 09:18:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:18:15,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 154 [2021-12-22 09:18:15,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:18:15,871 INFO L225 Difference]: With dead ends: 14275 [2021-12-22 09:18:15,871 INFO L226 Difference]: Without dead ends: 9767 [2021-12-22 09:18:15,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 09:18:15,876 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 621 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-22 09:18:15,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 666 Invalid, 3041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-22 09:18:15,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2021-12-22 09:18:15,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2021-12-22 09:18:15,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.3878763055498669) internal successors, (13554), 9766 states have internal predecessors, (13554), 0 states have call successors, (0), 0 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 09:18:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13554 transitions. [2021-12-22 09:18:16,003 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 13554 transitions. Word has length 154 [2021-12-22 09:18:16,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:18:16,004 INFO L470 AbstractCegarLoop]: Abstraction has 9767 states and 13554 transitions. [2021-12-22 09:18:16,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 09:18:16,004 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 13554 transitions. [2021-12-22 09:18:16,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-22 09:18:16,008 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:18:16,008 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:18:16,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-22 09:18:16,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:18:16,225 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:18:16,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:18:16,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1859295125, now seen corresponding path program 1 times [2021-12-22 09:18:16,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:18:16,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351889181] [2021-12-22 09:18:16,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:16,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:18:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 09:18:16,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:18:16,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351889181] [2021-12-22 09:18:16,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351889181] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:18:16,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:18:16,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:18:16,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118022215] [2021-12-22 09:18:16,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:18:16,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:18:16,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:18:16,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:18:16,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:18:16,333 INFO L87 Difference]: Start difference. First operand 9767 states and 13554 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 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 09:18:18,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:18:18,896 INFO L93 Difference]: Finished difference Result 23326 states and 32178 transitions. [2021-12-22 09:18:18,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:18:18,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2021-12-22 09:18:18,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:18:18,996 INFO L225 Difference]: With dead ends: 23326 [2021-12-22 09:18:18,997 INFO L226 Difference]: Without dead ends: 14275 [2021-12-22 09:18:19,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:18:19,005 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 706 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 3501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:18:19,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 710 Invalid, 3501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-22 09:18:19,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14275 states. [2021-12-22 09:18:19,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14275 to 14273. [2021-12-22 09:18:19,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14273 states, 14272 states have (on average 1.2780269058295963) internal successors, (18240), 14272 states have internal predecessors, (18240), 0 states have call successors, (0), 0 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 09:18:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 18240 transitions. [2021-12-22 09:18:19,194 INFO L78 Accepts]: Start accepts. Automaton has 14273 states and 18240 transitions. Word has length 170 [2021-12-22 09:18:19,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:18:19,194 INFO L470 AbstractCegarLoop]: Abstraction has 14273 states and 18240 transitions. [2021-12-22 09:18:19,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 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 09:18:19,195 INFO L276 IsEmpty]: Start isEmpty. Operand 14273 states and 18240 transitions. [2021-12-22 09:18:19,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-22 09:18:19,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:18:19,197 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:18:19,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 09:18:19,198 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:18:19,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:18:19,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1739309358, now seen corresponding path program 1 times [2021-12-22 09:18:19,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:18:19,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115794453] [2021-12-22 09:18:19,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:19,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:18:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 41 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 09:18:19,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:18:19,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115794453] [2021-12-22 09:18:19,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115794453] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:18:19,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107704226] [2021-12-22 09:18:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:19,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:18:19,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:18:19,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 09:18:19,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 09:18:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:19,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 09:18:19,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:18:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-22 09:18:19,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:18:19,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107704226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:18:19,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:18:19,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2021-12-22 09:18:19,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457439453] [2021-12-22 09:18:19,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:18:19,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:18:19,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:18:19,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:18:19,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 09:18:19,760 INFO L87 Difference]: Start difference. First operand 14273 states and 18240 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 09:18:22,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:18:22,402 INFO L93 Difference]: Finished difference Result 36805 states and 48363 transitions. [2021-12-22 09:18:22,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:18:22,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 244 [2021-12-22 09:18:22,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:18:22,437 INFO L225 Difference]: With dead ends: 36805 [2021-12-22 09:18:22,437 INFO L226 Difference]: Without dead ends: 23285 [2021-12-22 09:18:22,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 09:18:22,452 INFO L933 BasicCegarLoop]: 860 mSDtfsCounter, 818 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 3057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-22 09:18:22,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 868 Invalid, 3057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-22 09:18:22,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23285 states. [2021-12-22 09:18:22,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23285 to 23285. [2021-12-22 09:18:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23285 states, 23284 states have (on average 1.3053169558495104) internal successors, (30393), 23284 states have internal predecessors, (30393), 0 states have call successors, (0), 0 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 09:18:22,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23285 states to 23285 states and 30393 transitions. [2021-12-22 09:18:22,787 INFO L78 Accepts]: Start accepts. Automaton has 23285 states and 30393 transitions. Word has length 244 [2021-12-22 09:18:22,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:18:22,788 INFO L470 AbstractCegarLoop]: Abstraction has 23285 states and 30393 transitions. [2021-12-22 09:18:22,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 09:18:22,788 INFO L276 IsEmpty]: Start isEmpty. Operand 23285 states and 30393 transitions. [2021-12-22 09:18:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-12-22 09:18:22,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:18:22,790 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:18:22,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-22 09:18:23,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-22 09:18:23,008 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:18:23,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:18:23,008 INFO L85 PathProgramCache]: Analyzing trace with hash -518830816, now seen corresponding path program 1 times [2021-12-22 09:18:23,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:18:23,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597307706] [2021-12-22 09:18:23,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:23,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:18:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:23,099 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-22 09:18:23,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:18:23,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597307706] [2021-12-22 09:18:23,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597307706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:18:23,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:18:23,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:18:23,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979703209] [2021-12-22 09:18:23,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:18:23,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:18:23,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:18:23,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:18:23,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:18:23,101 INFO L87 Difference]: Start difference. First operand 23285 states and 30393 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 09:18:25,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:18:25,633 INFO L93 Difference]: Finished difference Result 57082 states and 76329 transitions. [2021-12-22 09:18:25,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:18:25,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 253 [2021-12-22 09:18:25,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:18:25,687 INFO L225 Difference]: With dead ends: 57082 [2021-12-22 09:18:25,687 INFO L226 Difference]: Without dead ends: 34550 [2021-12-22 09:18:25,709 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 09:18:25,710 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 853 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 653 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 2888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 09:18:25,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 249 Invalid, 2888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 09:18:25,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34550 states. [2021-12-22 09:18:26,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34550 to 34550. [2021-12-22 09:18:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34550 states, 34549 states have (on average 1.3112969984659468) internal successors, (45304), 34549 states have internal predecessors, (45304), 0 states have call successors, (0), 0 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 09:18:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34550 states to 34550 states and 45304 transitions. [2021-12-22 09:18:26,207 INFO L78 Accepts]: Start accepts. Automaton has 34550 states and 45304 transitions. Word has length 253 [2021-12-22 09:18:26,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:18:26,207 INFO L470 AbstractCegarLoop]: Abstraction has 34550 states and 45304 transitions. [2021-12-22 09:18:26,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 09:18:26,208 INFO L276 IsEmpty]: Start isEmpty. Operand 34550 states and 45304 transitions. [2021-12-22 09:18:26,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-12-22 09:18:26,211 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:18:26,212 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:18:26,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 09:18:26,212 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:18:26,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:18:26,213 INFO L85 PathProgramCache]: Analyzing trace with hash -879499859, now seen corresponding path program 1 times [2021-12-22 09:18:26,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:18:26,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558577049] [2021-12-22 09:18:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:26,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:18:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:26,294 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 09:18:26,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:18:26,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558577049] [2021-12-22 09:18:26,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558577049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:18:26,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:18:26,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:18:26,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647810615] [2021-12-22 09:18:26,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:18:26,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:18:26,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:18:26,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:18:26,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:18:26,297 INFO L87 Difference]: Start difference. First operand 34550 states and 45304 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 09:18:29,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:18:29,075 INFO L93 Difference]: Finished difference Result 68347 states and 89850 transitions. [2021-12-22 09:18:29,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:18:29,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 271 [2021-12-22 09:18:29,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:18:29,120 INFO L225 Difference]: With dead ends: 68347 [2021-12-22 09:18:29,121 INFO L226 Difference]: Without dead ends: 34550 [2021-12-22 09:18:29,144 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 09:18:29,147 INFO L933 BasicCegarLoop]: 1267 mSDtfsCounter, 651 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 2962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-22 09:18:29,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 1274 Invalid, 2962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 2656 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-22 09:18:29,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34550 states. [2021-12-22 09:18:29,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34550 to 34550. [2021-12-22 09:18:29,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34550 states, 34549 states have (on average 1.2889519233552347) internal successors, (44532), 34549 states have internal predecessors, (44532), 0 states have call successors, (0), 0 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 09:18:29,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34550 states to 34550 states and 44532 transitions. [2021-12-22 09:18:29,440 INFO L78 Accepts]: Start accepts. Automaton has 34550 states and 44532 transitions. Word has length 271 [2021-12-22 09:18:29,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:18:29,440 INFO L470 AbstractCegarLoop]: Abstraction has 34550 states and 44532 transitions. [2021-12-22 09:18:29,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 09:18:29,441 INFO L276 IsEmpty]: Start isEmpty. Operand 34550 states and 44532 transitions. [2021-12-22 09:18:29,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-12-22 09:18:29,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:18:29,446 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:18:29,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 09:18:29,447 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:18:29,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:18:29,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1640314461, now seen corresponding path program 1 times [2021-12-22 09:18:29,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:18:29,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340181220] [2021-12-22 09:18:29,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:29,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:18:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-12-22 09:18:29,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:18:29,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340181220] [2021-12-22 09:18:29,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340181220] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:18:29,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:18:29,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:18:29,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126090049] [2021-12-22 09:18:29,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:18:29,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:18:29,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:18:29,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:18:29,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:18:29,522 INFO L87 Difference]: Start difference. First operand 34550 states and 44532 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 09:18:32,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:18:32,322 INFO L93 Difference]: Finished difference Result 95383 states and 123558 transitions. [2021-12-22 09:18:32,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:18:32,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 275 [2021-12-22 09:18:32,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:18:32,393 INFO L225 Difference]: With dead ends: 95383 [2021-12-22 09:18:32,394 INFO L226 Difference]: Without dead ends: 61586 [2021-12-22 09:18:32,426 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 09:18:32,428 INFO L933 BasicCegarLoop]: 1397 mSDtfsCounter, 741 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 09:18:32,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 1405 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 09:18:32,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61586 states. [2021-12-22 09:18:32,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61586 to 60084. [2021-12-22 09:18:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60084 states, 60083 states have (on average 1.1968110780087546) internal successors, (71908), 60083 states have internal predecessors, (71908), 0 states have call successors, (0), 0 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 09:18:33,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60084 states to 60084 states and 71908 transitions. [2021-12-22 09:18:33,067 INFO L78 Accepts]: Start accepts. Automaton has 60084 states and 71908 transitions. Word has length 275 [2021-12-22 09:18:33,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:18:33,067 INFO L470 AbstractCegarLoop]: Abstraction has 60084 states and 71908 transitions. [2021-12-22 09:18:33,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 09:18:33,067 INFO L276 IsEmpty]: Start isEmpty. Operand 60084 states and 71908 transitions. [2021-12-22 09:18:33,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2021-12-22 09:18:33,081 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:18:33,081 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:33,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 09:18:33,082 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:18:33,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:18:33,082 INFO L85 PathProgramCache]: Analyzing trace with hash -437185341, now seen corresponding path program 1 times [2021-12-22 09:18:33,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:18:33,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079713335] [2021-12-22 09:18:33,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:33,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:18:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 09:18:33,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:18:33,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079713335] [2021-12-22 09:18:33,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079713335] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:18:33,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:18:33,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:18:33,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924104596] [2021-12-22 09:18:33,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:18:33,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:18:33,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:18:33,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:18:33,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:18:33,387 INFO L87 Difference]: Start difference. First operand 60084 states and 71908 transitions. Second operand has 4 states, 4 states have (on average 126.5) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 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 09:18:37,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:18:37,469 INFO L93 Difference]: Finished difference Result 144949 states and 177319 transitions. [2021-12-22 09:18:37,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:18:37,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 126.5) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 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 506 [2021-12-22 09:18:37,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:18:37,563 INFO L225 Difference]: With dead ends: 144949 [2021-12-22 09:18:37,563 INFO L226 Difference]: Without dead ends: 85618 [2021-12-22 09:18:37,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:18:37,582 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 1079 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4302 mSolverCounterSat, 946 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 5248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 946 IncrementalHoareTripleChecker+Valid, 4302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-22 09:18:37,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 440 Invalid, 5248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [946 Valid, 4302 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-22 09:18:37,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85618 states. [2021-12-22 09:18:38,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85618 to 78859. [2021-12-22 09:18:38,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78859 states, 78858 states have (on average 1.1790306627101879) internal successors, (92976), 78858 states have internal predecessors, (92976), 0 states have call successors, (0), 0 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 09:18:38,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78859 states to 78859 states and 92976 transitions. [2021-12-22 09:18:38,615 INFO L78 Accepts]: Start accepts. Automaton has 78859 states and 92976 transitions. Word has length 506 [2021-12-22 09:18:38,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:18:38,615 INFO L470 AbstractCegarLoop]: Abstraction has 78859 states and 92976 transitions. [2021-12-22 09:18:38,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.5) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 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 09:18:38,616 INFO L276 IsEmpty]: Start isEmpty. Operand 78859 states and 92976 transitions. [2021-12-22 09:18:38,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2021-12-22 09:18:38,673 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:18:38,674 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:38,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 09:18:38,674 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:18:38,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:18:38,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1368749593, now seen corresponding path program 1 times [2021-12-22 09:18:38,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:18:38,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450313999] [2021-12-22 09:18:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:38,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:18:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 197 proven. 108 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 09:18:38,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:18:38,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450313999] [2021-12-22 09:18:38,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450313999] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:18:38,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377242546] [2021-12-22 09:18:38,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:38,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:18:38,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:18:39,008 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 09:18:39,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 09:18:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:39,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 09:18:39,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:18:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-22 09:18:40,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:18:40,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377242546] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:18:40,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:18:40,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-22 09:18:40,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60406440] [2021-12-22 09:18:40,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:18:40,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:18:40,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:18:40,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:18:40,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:18:40,839 INFO L87 Difference]: Start difference. First operand 78859 states and 92976 transitions. Second operand has 4 states, 4 states have (on average 127.0) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 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 09:18:44,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:18:44,282 INFO L93 Difference]: Finished difference Result 168230 states and 198059 transitions. [2021-12-22 09:18:44,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:18:44,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 127.0) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 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 585 [2021-12-22 09:18:44,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:18:44,403 INFO L225 Difference]: With dead ends: 168230 [2021-12-22 09:18:44,403 INFO L226 Difference]: Without dead ends: 90124 [2021-12-22 09:18:44,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:18:44,458 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1638 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3150 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 3561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 3150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-22 09:18:44,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1638 Valid, 578 Invalid, 3561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 3150 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-22 09:18:44,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90124 states. [2021-12-22 09:18:45,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90124 to 87120. [2021-12-22 09:18:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87120 states, 87119 states have (on average 1.1699973599329652) internal successors, (101929), 87119 states have internal predecessors, (101929), 0 states have call successors, (0), 0 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 09:18:45,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87120 states to 87120 states and 101929 transitions. [2021-12-22 09:18:45,691 INFO L78 Accepts]: Start accepts. Automaton has 87120 states and 101929 transitions. Word has length 585 [2021-12-22 09:18:45,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:18:45,692 INFO L470 AbstractCegarLoop]: Abstraction has 87120 states and 101929 transitions. [2021-12-22 09:18:45,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.0) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 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 09:18:45,692 INFO L276 IsEmpty]: Start isEmpty. Operand 87120 states and 101929 transitions. [2021-12-22 09:18:45,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2021-12-22 09:18:45,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:18:45,719 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:45,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 09:18:45,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:18:45,936 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:18:45,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:18:45,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2004908532, now seen corresponding path program 1 times [2021-12-22 09:18:45,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:18:45,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359696982] [2021-12-22 09:18:45,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:45,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:18:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:46,336 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 116 proven. 229 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 09:18:46,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:18:46,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359696982] [2021-12-22 09:18:46,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359696982] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:18:46,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628910013] [2021-12-22 09:18:46,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:46,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:18:46,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:18:46,337 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 09:18:46,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 09:18:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:46,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 09:18:46,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:18:47,669 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-22 09:18:47,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:18:47,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628910013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:18:47,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:18:47,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-12-22 09:18:47,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110525260] [2021-12-22 09:18:47,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:18:47,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:18:47,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:18:47,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:18:47,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:18:47,670 INFO L87 Difference]: Start difference. First operand 87120 states and 101929 transitions. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 09:18:50,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:18:50,668 INFO L93 Difference]: Finished difference Result 205029 states and 240876 transitions. [2021-12-22 09:18:50,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:18:50,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 595 [2021-12-22 09:18:50,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:18:50,860 INFO L225 Difference]: With dead ends: 205029 [2021-12-22 09:18:50,860 INFO L226 Difference]: Without dead ends: 118662 [2021-12-22 09:18:50,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 594 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:18:50,903 INFO L933 BasicCegarLoop]: 1298 mSDtfsCounter, 412 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2284 mSolverCounterSat, 493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 2777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 2284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 09:18:50,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 1306 Invalid, 2777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 2284 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 09:18:50,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118662 states. [2021-12-22 09:18:51,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118662 to 115658. [2021-12-22 09:18:52,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115658 states, 115657 states have (on average 1.1493640678904) internal successors, (132932), 115657 states have internal predecessors, (132932), 0 states have call successors, (0), 0 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 09:18:52,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115658 states to 115658 states and 132932 transitions. [2021-12-22 09:18:52,184 INFO L78 Accepts]: Start accepts. Automaton has 115658 states and 132932 transitions. Word has length 595 [2021-12-22 09:18:52,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:18:52,185 INFO L470 AbstractCegarLoop]: Abstraction has 115658 states and 132932 transitions. [2021-12-22 09:18:52,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 09:18:52,185 INFO L276 IsEmpty]: Start isEmpty. Operand 115658 states and 132932 transitions. [2021-12-22 09:18:52,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2021-12-22 09:18:52,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:18:52,205 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:52,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 09:18:52,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:18:52,422 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:18:52,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:18:52,423 INFO L85 PathProgramCache]: Analyzing trace with hash 494068697, now seen corresponding path program 1 times [2021-12-22 09:18:52,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:18:52,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985513194] [2021-12-22 09:18:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:52,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:18:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-22 09:18:53,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:18:53,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985513194] [2021-12-22 09:18:53,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985513194] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:18:53,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:18:53,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:18:53,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412129926] [2021-12-22 09:18:53,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:18:53,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:18:53,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:18:53,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:18:53,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:18:53,043 INFO L87 Difference]: Start difference. First operand 115658 states and 132932 transitions. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 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 09:18:55,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:18:55,867 INFO L93 Difference]: Finished difference Result 232816 states and 267391 transitions. [2021-12-22 09:18:55,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:18:55,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 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 605 [2021-12-22 09:18:55,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:18:56,036 INFO L225 Difference]: With dead ends: 232816 [2021-12-22 09:18:56,037 INFO L226 Difference]: Without dead ends: 115658 [2021-12-22 09:18:56,085 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 09:18:56,088 INFO L933 BasicCegarLoop]: 1291 mSDtfsCounter, 405 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 2733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-22 09:18:56,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 1298 Invalid, 2733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-22 09:18:56,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115658 states. [2021-12-22 09:18:57,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115658 to 114156. [2021-12-22 09:18:57,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114156 states, 114155 states have (on average 1.1360956594104508) internal successors, (129691), 114155 states have internal predecessors, (129691), 0 states have call successors, (0), 0 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 09:18:57,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114156 states to 114156 states and 129691 transitions. [2021-12-22 09:18:57,463 INFO L78 Accepts]: Start accepts. Automaton has 114156 states and 129691 transitions. Word has length 605 [2021-12-22 09:18:57,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:18:57,464 INFO L470 AbstractCegarLoop]: Abstraction has 114156 states and 129691 transitions. [2021-12-22 09:18:57,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 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 09:18:57,464 INFO L276 IsEmpty]: Start isEmpty. Operand 114156 states and 129691 transitions. [2021-12-22 09:18:57,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2021-12-22 09:18:57,487 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:18:57,488 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:57,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 09:18:57,488 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:18:57,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:18:57,489 INFO L85 PathProgramCache]: Analyzing trace with hash 429750882, now seen corresponding path program 1 times [2021-12-22 09:18:57,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:18:57,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237932921] [2021-12-22 09:18:57,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:18:57,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:18:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:18:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 541 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-12-22 09:18:57,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:18:57,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237932921] [2021-12-22 09:18:57,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237932921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:18:57,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:18:57,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:18:57,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000693619] [2021-12-22 09:18:57,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:18:57,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:18:57,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:18:57,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:18:57,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:18:57,626 INFO L87 Difference]: Start difference. First operand 114156 states and 129691 transitions. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 09:19:00,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:19:00,971 INFO L93 Difference]: Finished difference Result 248587 states and 285354 transitions. [2021-12-22 09:19:00,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:19:00,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 605 [2021-12-22 09:19:00,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:19:01,142 INFO L225 Difference]: With dead ends: 248587 [2021-12-22 09:19:01,143 INFO L226 Difference]: Without dead ends: 135184 [2021-12-22 09:19:01,191 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 09:19:01,191 INFO L933 BasicCegarLoop]: 1210 mSDtfsCounter, 675 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-22 09:19:01,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 1218 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-22 09:19:01,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135184 states.