./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.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 2126042da788f2122824de6358ec68ac8216a4309db7602f144bdab8df75c67a --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:04:47,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:04:47,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:04:47,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:04:47,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:04:47,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:04:47,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:04:47,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:04:47,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:04:47,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:04:47,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:04:47,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:04:47,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:04:47,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:04:47,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:04:47,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:04:47,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:04:47,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:04:47,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:04:47,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:04:47,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:04:47,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:04:47,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:04:47,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:04:47,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:04:47,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:04:47,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:04:47,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:04:47,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:04:47,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:04:47,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:04:47,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:04:47,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:04:47,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:04:47,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:04:47,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:04:47,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:04:47,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:04:47,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:04:47,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:04:47,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:04:47,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 12:04:47,414 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:04:47,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:04:47,414 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:04:47,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:04:47,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:04:47,415 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:04:47,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:04:47,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:04:47,416 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:04:47,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:04:47,416 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:04:47,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:04:47,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:04:47,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:04:47,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:04:47,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:04:47,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:04:47,417 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:04:47,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:04:47,418 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:04:47,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:04:47,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:04:47,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:04:47,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:04:47,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:04:47,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:04:47,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:04:47,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:04:47,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:04:47,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:04:47,419 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:04:47,419 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:04:47,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:04:47,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:04:47,420 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2126042da788f2122824de6358ec68ac8216a4309db7602f144bdab8df75c67a [2021-12-15 12:04:47,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:04:47,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:04:47,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:04:47,649 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:04:47,650 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:04:47,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c [2021-12-15 12:04:47,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/090a86fb5/a66511ba82cf4d8ab61d361a01823a04/FLAGb14f593cb [2021-12-15 12:04:48,280 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:04:48,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c [2021-12-15 12:04:48,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/090a86fb5/a66511ba82cf4d8ab61d361a01823a04/FLAGb14f593cb [2021-12-15 12:04:48,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/090a86fb5/a66511ba82cf4d8ab61d361a01823a04 [2021-12-15 12:04:48,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:04:48,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:04:48,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:04:48,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:04:48,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:04:48,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:04:48" (1/1) ... [2021-12-15 12:04:48,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7154d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:48, skipping insertion in model container [2021-12-15 12:04:48,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:04:48" (1/1) ... [2021-12-15 12:04:48,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:04:48,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:04:49,073 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c[11677,11690] [2021-12-15 12:04:49,121 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c[19425,19438] [2021-12-15 12:04:49,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:04:49,564 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:04:49,596 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c[11677,11690] [2021-12-15 12:04:49,608 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c[19425,19438] [2021-12-15 12:04:49,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:04:49,922 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:04:49,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:49 WrapperNode [2021-12-15 12:04:49,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:04:49,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:04:49,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:04:49,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:04:49,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:49" (1/1) ... [2021-12-15 12:04:49,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:49" (1/1) ... [2021-12-15 12:04:50,312 INFO L137 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5091 [2021-12-15 12:04:50,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:04:50,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:04:50,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:04:50,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:04:50,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:49" (1/1) ... [2021-12-15 12:04:50,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:49" (1/1) ... [2021-12-15 12:04:50,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:49" (1/1) ... [2021-12-15 12:04:50,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:49" (1/1) ... [2021-12-15 12:04:50,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:49" (1/1) ... [2021-12-15 12:04:50,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:49" (1/1) ... [2021-12-15 12:04:50,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:49" (1/1) ... [2021-12-15 12:04:50,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:04:50,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:04:50,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:04:50,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:04:50,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:49" (1/1) ... [2021-12-15 12:04:50,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:04:50,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:04:50,755 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) [2021-12-15 12:04:50,767 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 [2021-12-15 12:04:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:04:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:04:50,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:04:50,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:04:50,862 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:04:50,864 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:04:53,523 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:04:53,535 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:04:53,535 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 12:04:53,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:04:53 BoogieIcfgContainer [2021-12-15 12:04:53,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:04:53,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:04:53,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:04:53,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:04:53,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:04:48" (1/3) ... [2021-12-15 12:04:53,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9fb8ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:04:53, skipping insertion in model container [2021-12-15 12:04:53,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:49" (2/3) ... [2021-12-15 12:04:53,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9fb8ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:04:53, skipping insertion in model container [2021-12-15 12:04:53,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:04:53" (3/3) ... [2021-12-15 12:04:53,543 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c [2021-12-15 12:04:53,546 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:04:53,546 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 12:04:53,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:04:53,587 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 [2021-12-15 12:04:53,588 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 12:04:53,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:53,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-15 12:04:53,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:53,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:04:53,615 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:53,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:53,618 INFO L85 PathProgramCache]: Analyzing trace with hash -441366565, now seen corresponding path program 1 times [2021-12-15 12:04:53,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:53,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160080511] [2021-12-15 12:04:53,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:53,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:53,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:53,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:53,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160080511] [2021-12-15 12:04:53,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160080511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:53,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:53,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 12:04:53,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286831912] [2021-12-15 12:04:53,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:53,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 12:04:53,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:53,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 12:04:53,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 12:04:53,771 INFO L87 Difference]: Start difference. First operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:53,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:53,814 INFO L93 Difference]: Finished difference Result 1781 states and 3374 transitions. [2021-12-15 12:04:53,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 12:04:53,816 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-12-15 12:04:53,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:53,828 INFO L225 Difference]: With dead ends: 1781 [2021-12-15 12:04:53,828 INFO L226 Difference]: Without dead ends: 843 [2021-12-15 12:04:53,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 12:04:53,850 INFO L933 BasicCegarLoop]: 1656 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:53,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:53,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-12-15 12:04:53,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2021-12-15 12:04:53,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.8894173602853745) internal successors, (1589), 842 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:53,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1589 transitions. [2021-12-15 12:04:53,913 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1589 transitions. Word has length 34 [2021-12-15 12:04:53,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:53,914 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1589 transitions. [2021-12-15 12:04:53,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:53,914 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1589 transitions. [2021-12-15 12:04:53,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-15 12:04:53,915 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:53,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:04:53,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 12:04:53,916 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:53,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:53,917 INFO L85 PathProgramCache]: Analyzing trace with hash -950839655, now seen corresponding path program 1 times [2021-12-15 12:04:53,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:53,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544088320] [2021-12-15 12:04:53,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:53,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:53,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:53,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:53,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544088320] [2021-12-15 12:04:53,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544088320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:53,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:53,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 12:04:53,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341766121] [2021-12-15 12:04:53,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:53,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 12:04:53,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:53,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 12:04:53,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 12:04:53,998 INFO L87 Difference]: Start difference. First operand 843 states and 1589 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:54,103 INFO L93 Difference]: Finished difference Result 899 states and 1675 transitions. [2021-12-15 12:04:54,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 12:04:54,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-12-15 12:04:54,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:54,110 INFO L225 Difference]: With dead ends: 899 [2021-12-15 12:04:54,110 INFO L226 Difference]: Without dead ends: 843 [2021-12-15 12:04:54,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:04:54,111 INFO L933 BasicCegarLoop]: 1587 mSDtfsCounter, 3 mSDsluCounter, 4727 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6314 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:54,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6314 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:54,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-12-15 12:04:54,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2021-12-15 12:04:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.8525564803804995) internal successors, (1558), 842 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1558 transitions. [2021-12-15 12:04:54,130 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1558 transitions. Word has length 34 [2021-12-15 12:04:54,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:54,130 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1558 transitions. [2021-12-15 12:04:54,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,130 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1558 transitions. [2021-12-15 12:04:54,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:04:54,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:54,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:04:54,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 12:04:54,132 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:54,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:54,133 INFO L85 PathProgramCache]: Analyzing trace with hash -695028240, now seen corresponding path program 1 times [2021-12-15 12:04:54,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:54,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109578973] [2021-12-15 12:04:54,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:54,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:54,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:54,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:54,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109578973] [2021-12-15 12:04:54,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109578973] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:54,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:54,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:04:54,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361403218] [2021-12-15 12:04:54,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:54,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:04:54,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:54,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:04:54,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:04:54,209 INFO L87 Difference]: Start difference. First operand 843 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:54,286 INFO L93 Difference]: Finished difference Result 941 states and 1712 transitions. [2021-12-15 12:04:54,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:04:54,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-12-15 12:04:54,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:54,295 INFO L225 Difference]: With dead ends: 941 [2021-12-15 12:04:54,295 INFO L226 Difference]: Without dead ends: 889 [2021-12-15 12:04:54,296 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 [2021-12-15 12:04:54,296 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 1511 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:54,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 1706 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:54,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2021-12-15 12:04:54,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 887. [2021-12-15 12:04:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 885 states have (on average 1.83954802259887) internal successors, (1628), 886 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1628 transitions. [2021-12-15 12:04:54,324 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1628 transitions. Word has length 64 [2021-12-15 12:04:54,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:54,325 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1628 transitions. [2021-12-15 12:04:54,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1628 transitions. [2021-12-15 12:04:54,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:04:54,326 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:54,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:04:54,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 12:04:54,327 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:54,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:54,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1440610970, now seen corresponding path program 1 times [2021-12-15 12:04:54,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:54,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455788017] [2021-12-15 12:04:54,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:54,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:54,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:54,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455788017] [2021-12-15 12:04:54,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455788017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:54,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:54,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:04:54,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796055106] [2021-12-15 12:04:54,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:54,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:04:54,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:54,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:04:54,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:04:54,387 INFO L87 Difference]: Start difference. First operand 887 states and 1628 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:54,423 INFO L93 Difference]: Finished difference Result 1067 states and 1912 transitions. [2021-12-15 12:04:54,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:04:54,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-12-15 12:04:54,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:54,427 INFO L225 Difference]: With dead ends: 1067 [2021-12-15 12:04:54,427 INFO L226 Difference]: Without dead ends: 971 [2021-12-15 12:04:54,428 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 [2021-12-15 12:04:54,439 INFO L933 BasicCegarLoop]: 1621 mSDtfsCounter, 1507 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:54,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 1705 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:54,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2021-12-15 12:04:54,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 969. [2021-12-15 12:04:54,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 967 states have (on average 1.8169596690796277) internal successors, (1757), 968 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1757 transitions. [2021-12-15 12:04:54,458 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1757 transitions. Word has length 64 [2021-12-15 12:04:54,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:54,460 INFO L470 AbstractCegarLoop]: Abstraction has 969 states and 1757 transitions. [2021-12-15 12:04:54,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,461 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1757 transitions. [2021-12-15 12:04:54,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:04:54,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:54,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:04:54,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 12:04:54,466 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:54,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:54,467 INFO L85 PathProgramCache]: Analyzing trace with hash 914325468, now seen corresponding path program 1 times [2021-12-15 12:04:54,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:54,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765856259] [2021-12-15 12:04:54,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:54,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:54,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:54,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:54,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765856259] [2021-12-15 12:04:54,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765856259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:54,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:54,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:04:54,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087762695] [2021-12-15 12:04:54,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:54,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:04:54,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:54,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:04:54,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:04:54,573 INFO L87 Difference]: Start difference. First operand 969 states and 1757 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:54,609 INFO L93 Difference]: Finished difference Result 1301 states and 2279 transitions. [2021-12-15 12:04:54,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:04:54,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-12-15 12:04:54,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:54,613 INFO L225 Difference]: With dead ends: 1301 [2021-12-15 12:04:54,613 INFO L226 Difference]: Without dead ends: 1123 [2021-12-15 12:04:54,614 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 [2021-12-15 12:04:54,615 INFO L933 BasicCegarLoop]: 1616 mSDtfsCounter, 1503 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:54,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1503 Valid, 1704 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:54,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-12-15 12:04:54,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1121. [2021-12-15 12:04:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1119 states have (on average 1.7810545129579982) internal successors, (1993), 1120 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1993 transitions. [2021-12-15 12:04:54,634 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1993 transitions. Word has length 64 [2021-12-15 12:04:54,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:54,635 INFO L470 AbstractCegarLoop]: Abstraction has 1121 states and 1993 transitions. [2021-12-15 12:04:54,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1993 transitions. [2021-12-15 12:04:54,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:04:54,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:54,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:04:54,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 12:04:54,636 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:54,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:54,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1701027568, now seen corresponding path program 1 times [2021-12-15 12:04:54,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:54,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512298855] [2021-12-15 12:04:54,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:54,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:54,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:54,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512298855] [2021-12-15 12:04:54,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512298855] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:54,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:54,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:04:54,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617994127] [2021-12-15 12:04:54,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:54,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:04:54,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:54,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:04:54,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:04:54,710 INFO L87 Difference]: Start difference. First operand 1121 states and 1993 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:54,735 INFO L93 Difference]: Finished difference Result 1733 states and 2947 transitions. [2021-12-15 12:04:54,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:04:54,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-12-15 12:04:54,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:54,741 INFO L225 Difference]: With dead ends: 1733 [2021-12-15 12:04:54,742 INFO L226 Difference]: Without dead ends: 1403 [2021-12-15 12:04:54,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:04:54,744 INFO L933 BasicCegarLoop]: 1611 mSDtfsCounter, 1499 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:54,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 1703 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:54,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-12-15 12:04:54,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1401. [2021-12-15 12:04:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1399 states have (on average 1.7305218012866332) internal successors, (2421), 1400 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 2421 transitions. [2021-12-15 12:04:54,775 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 2421 transitions. Word has length 64 [2021-12-15 12:04:54,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:54,776 INFO L470 AbstractCegarLoop]: Abstraction has 1401 states and 2421 transitions. [2021-12-15 12:04:54,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 2421 transitions. [2021-12-15 12:04:54,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:04:54,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:54,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:04:54,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 12:04:54,777 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:54,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:54,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1105068988, now seen corresponding path program 1 times [2021-12-15 12:04:54,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:54,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983353288] [2021-12-15 12:04:54,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:54,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:54,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:54,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983353288] [2021-12-15 12:04:54,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983353288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:54,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:54,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:04:54,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486116429] [2021-12-15 12:04:54,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:54,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:04:54,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:54,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:04:54,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:04:54,830 INFO L87 Difference]: Start difference. First operand 1401 states and 2421 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:54,859 INFO L93 Difference]: Finished difference Result 2525 states and 4151 transitions. [2021-12-15 12:04:54,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:04:54,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-12-15 12:04:54,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:54,867 INFO L225 Difference]: With dead ends: 2525 [2021-12-15 12:04:54,867 INFO L226 Difference]: Without dead ends: 1915 [2021-12-15 12:04:54,868 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 [2021-12-15 12:04:54,869 INFO L933 BasicCegarLoop]: 1606 mSDtfsCounter, 1495 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:54,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1495 Valid, 1702 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:54,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2021-12-15 12:04:54,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1913. [2021-12-15 12:04:54,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1911 states have (on average 1.6687598116169544) internal successors, (3189), 1912 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 3189 transitions. [2021-12-15 12:04:54,907 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 3189 transitions. Word has length 64 [2021-12-15 12:04:54,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:54,907 INFO L470 AbstractCegarLoop]: Abstraction has 1913 states and 3189 transitions. [2021-12-15 12:04:54,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:54,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 3189 transitions. [2021-12-15 12:04:54,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:04:54,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:54,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:04:54,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 12:04:54,908 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:54,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:54,909 INFO L85 PathProgramCache]: Analyzing trace with hash 112916410, now seen corresponding path program 1 times [2021-12-15 12:04:54,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:54,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160481852] [2021-12-15 12:04:54,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:54,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:54,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:54,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160481852] [2021-12-15 12:04:54,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160481852] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:54,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:54,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:04:54,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499527984] [2021-12-15 12:04:54,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:54,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:04:54,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:54,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:04:54,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:04:54,979 INFO L87 Difference]: Start difference. First operand 1913 states and 3189 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:55,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:55,294 INFO L93 Difference]: Finished difference Result 13133 states and 20319 transitions. [2021-12-15 12:04:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 12:04:55,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-12-15 12:04:55,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:55,363 INFO L225 Difference]: With dead ends: 13133 [2021-12-15 12:04:55,364 INFO L226 Difference]: Without dead ends: 12011 [2021-12-15 12:04:55,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-15 12:04:55,368 INFO L933 BasicCegarLoop]: 1552 mSDtfsCounter, 8512 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8512 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:55,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8512 Valid, 2392 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 12:04:55,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12011 states. [2021-12-15 12:04:55,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12011 to 3033. [2021-12-15 12:04:55,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 3031 states have (on average 1.5958429561200924) internal successors, (4837), 3032 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 4837 transitions. [2021-12-15 12:04:55,500 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 4837 transitions. Word has length 64 [2021-12-15 12:04:55,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:55,500 INFO L470 AbstractCegarLoop]: Abstraction has 3033 states and 4837 transitions. [2021-12-15 12:04:55,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:55,501 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 4837 transitions. [2021-12-15 12:04:55,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-15 12:04:55,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:55,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:04:55,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 12:04:55,502 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:55,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:55,502 INFO L85 PathProgramCache]: Analyzing trace with hash -277208054, now seen corresponding path program 1 times [2021-12-15 12:04:55,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:55,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909457497] [2021-12-15 12:04:55,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:55,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:55,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:55,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909457497] [2021-12-15 12:04:55,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909457497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:55,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:55,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:04:55,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356765104] [2021-12-15 12:04:55,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:55,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:04:55,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:55,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:04:55,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:04:55,527 INFO L87 Difference]: Start difference. First operand 3033 states and 4837 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:55,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:55,602 INFO L93 Difference]: Finished difference Result 6319 states and 9753 transitions. [2021-12-15 12:04:55,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:04:55,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-12-15 12:04:55,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:55,613 INFO L225 Difference]: With dead ends: 6319 [2021-12-15 12:04:55,613 INFO L226 Difference]: Without dead ends: 4077 [2021-12-15 12:04:55,616 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 [2021-12-15 12:04:55,617 INFO L933 BasicCegarLoop]: 1588 mSDtfsCounter, 1487 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:55,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 1665 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4077 states. [2021-12-15 12:04:55,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4077 to 4075. [2021-12-15 12:04:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 4073 states have (on average 1.557328750306899) internal successors, (6343), 4074 states have internal predecessors, (6343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 6343 transitions. [2021-12-15 12:04:55,713 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 6343 transitions. Word has length 66 [2021-12-15 12:04:55,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:55,713 INFO L470 AbstractCegarLoop]: Abstraction has 4075 states and 6343 transitions. [2021-12-15 12:04:55,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:55,714 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 6343 transitions. [2021-12-15 12:04:55,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-15 12:04:55,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:55,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:04:55,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 12:04:55,714 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:55,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:55,715 INFO L85 PathProgramCache]: Analyzing trace with hash -210714542, now seen corresponding path program 1 times [2021-12-15 12:04:55,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:55,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478324867] [2021-12-15 12:04:55,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:55,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:55,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:55,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:55,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478324867] [2021-12-15 12:04:55,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478324867] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:55,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:55,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:04:55,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558730769] [2021-12-15 12:04:55,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:55,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:04:55,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:55,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:04:55,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:04:55,831 INFO L87 Difference]: Start difference. First operand 4075 states and 6343 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:56,065 INFO L93 Difference]: Finished difference Result 7359 states and 11209 transitions. [2021-12-15 12:04:56,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:04:56,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-12-15 12:04:56,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:56,073 INFO L225 Difference]: With dead ends: 7359 [2021-12-15 12:04:56,073 INFO L226 Difference]: Without dead ends: 4077 [2021-12-15 12:04:56,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-15 12:04:56,077 INFO L933 BasicCegarLoop]: 1551 mSDtfsCounter, 1674 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:56,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1674 Valid, 1946 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:56,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4077 states. [2021-12-15 12:04:56,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4077 to 4075. [2021-12-15 12:04:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 4073 states have (on average 1.5455438251902773) internal successors, (6295), 4074 states have internal predecessors, (6295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 6295 transitions. [2021-12-15 12:04:56,204 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 6295 transitions. Word has length 66 [2021-12-15 12:04:56,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:56,204 INFO L470 AbstractCegarLoop]: Abstraction has 4075 states and 6295 transitions. [2021-12-15 12:04:56,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,205 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 6295 transitions. [2021-12-15 12:04:56,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-15 12:04:56,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:56,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:04:56,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 12:04:56,206 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:56,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:56,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1643060746, now seen corresponding path program 1 times [2021-12-15 12:04:56,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:56,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756973236] [2021-12-15 12:04:56,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:56,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:56,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:56,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756973236] [2021-12-15 12:04:56,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756973236] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:56,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:56,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 12:04:56,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240503771] [2021-12-15 12:04:56,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:56,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 12:04:56,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:56,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 12:04:56,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 12:04:56,253 INFO L87 Difference]: Start difference. First operand 4075 states and 6295 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:56,427 INFO L93 Difference]: Finished difference Result 7357 states and 11112 transitions. [2021-12-15 12:04:56,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 12:04:56,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-15 12:04:56,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:56,435 INFO L225 Difference]: With dead ends: 7357 [2021-12-15 12:04:56,436 INFO L226 Difference]: Without dead ends: 4075 [2021-12-15 12:04:56,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-15 12:04:56,441 INFO L933 BasicCegarLoop]: 1519 mSDtfsCounter, 4687 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4687 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:56,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4687 Valid, 3007 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:56,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2021-12-15 12:04:56,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4075. [2021-12-15 12:04:56,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 4073 states have (on average 1.5337589000736558) internal successors, (6247), 4074 states have internal predecessors, (6247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 6247 transitions. [2021-12-15 12:04:56,575 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 6247 transitions. Word has length 67 [2021-12-15 12:04:56,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:56,576 INFO L470 AbstractCegarLoop]: Abstraction has 4075 states and 6247 transitions. [2021-12-15 12:04:56,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,576 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 6247 transitions. [2021-12-15 12:04:56,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-15 12:04:56,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:56,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:04:56,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 12:04:56,577 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:56,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:56,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1372042872, now seen corresponding path program 1 times [2021-12-15 12:04:56,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:56,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177655679] [2021-12-15 12:04:56,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:56,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:56,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:56,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177655679] [2021-12-15 12:04:56,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177655679] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:56,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:56,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 12:04:56,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985344940] [2021-12-15 12:04:56,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:56,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 12:04:56,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:56,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 12:04:56,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 12:04:56,625 INFO L87 Difference]: Start difference. First operand 4075 states and 6247 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:56,810 INFO L93 Difference]: Finished difference Result 7357 states and 11016 transitions. [2021-12-15 12:04:56,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 12:04:56,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-15 12:04:56,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:56,818 INFO L225 Difference]: With dead ends: 7357 [2021-12-15 12:04:56,819 INFO L226 Difference]: Without dead ends: 4075 [2021-12-15 12:04:56,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-15 12:04:56,825 INFO L933 BasicCegarLoop]: 1521 mSDtfsCounter, 4719 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4719 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:56,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4719 Valid, 3012 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:56,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2021-12-15 12:04:56,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4075. [2021-12-15 12:04:56,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 4073 states have (on average 1.5219739749570342) internal successors, (6199), 4074 states have internal predecessors, (6199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 6199 transitions. [2021-12-15 12:04:56,941 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 6199 transitions. Word has length 67 [2021-12-15 12:04:56,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:56,941 INFO L470 AbstractCegarLoop]: Abstraction has 4075 states and 6199 transitions. [2021-12-15 12:04:56,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,941 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 6199 transitions. [2021-12-15 12:04:56,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-15 12:04:56,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:56,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:04:56,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 12:04:56,942 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:56,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:56,943 INFO L85 PathProgramCache]: Analyzing trace with hash 316900870, now seen corresponding path program 1 times [2021-12-15 12:04:56,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:56,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344900748] [2021-12-15 12:04:56,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:56,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:57,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:57,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344900748] [2021-12-15 12:04:57,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344900748] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:57,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:57,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 12:04:57,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284847185] [2021-12-15 12:04:57,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:57,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-15 12:04:57,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:57,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-15 12:04:57,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-15 12:04:57,006 INFO L87 Difference]: Start difference. First operand 4075 states and 6199 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:57,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:57,299 INFO L93 Difference]: Finished difference Result 6918 states and 10173 transitions. [2021-12-15 12:04:57,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-15 12:04:57,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-15 12:04:57,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:57,313 INFO L225 Difference]: With dead ends: 6918 [2021-12-15 12:04:57,313 INFO L226 Difference]: Without dead ends: 6916 [2021-12-15 12:04:57,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-15 12:04:57,316 INFO L933 BasicCegarLoop]: 1578 mSDtfsCounter, 616 mSDsluCounter, 9065 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 10643 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:57,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 10643 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:57,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6916 states. [2021-12-15 12:04:57,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6916 to 4267. [2021-12-15 12:04:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4267 states, 4265 states have (on average 1.4947245017584994) internal successors, (6375), 4266 states have internal predecessors, (6375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:57,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 6375 transitions. [2021-12-15 12:04:57,476 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 6375 transitions. Word has length 67 [2021-12-15 12:04:57,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:57,476 INFO L470 AbstractCegarLoop]: Abstraction has 4267 states and 6375 transitions. [2021-12-15 12:04:57,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:57,477 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 6375 transitions. [2021-12-15 12:04:57,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-15 12:04:57,477 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:57,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:04:57,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 12:04:57,478 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:57,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:57,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2064290429, now seen corresponding path program 1 times [2021-12-15 12:04:57,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:57,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869506437] [2021-12-15 12:04:57,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:57,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:57,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:57,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869506437] [2021-12-15 12:04:57,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869506437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:57,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:57,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:04:57,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465760793] [2021-12-15 12:04:57,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:57,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 12:04:57,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:57,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 12:04:57,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 12:04:57,525 INFO L87 Difference]: Start difference. First operand 4267 states and 6375 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:05:02,418 INFO L93 Difference]: Finished difference Result 6522 states and 10684 transitions. [2021-12-15 12:05:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 12:05:02,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-15 12:05:02,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:05:02,428 INFO L225 Difference]: With dead ends: 6522 [2021-12-15 12:05:02,428 INFO L226 Difference]: Without dead ends: 5769 [2021-12-15 12:05:02,429 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 [2021-12-15 12:05:02,430 INFO L933 BasicCegarLoop]: 792 mSDtfsCounter, 2405 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2405 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-15 12:05:02,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2405 Valid, 810 Invalid, 6515 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-15 12:05:02,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5769 states. [2021-12-15 12:05:02,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5769 to 5769. [2021-12-15 12:05:02,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5769 states, 5767 states have (on average 1.4719958383908445) internal successors, (8489), 5768 states have internal predecessors, (8489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5769 states to 5769 states and 8489 transitions. [2021-12-15 12:05:02,591 INFO L78 Accepts]: Start accepts. Automaton has 5769 states and 8489 transitions. Word has length 67 [2021-12-15 12:05:02,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:05:02,591 INFO L470 AbstractCegarLoop]: Abstraction has 5769 states and 8489 transitions. [2021-12-15 12:05:02,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 5769 states and 8489 transitions. [2021-12-15 12:05:02,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-15 12:05:02,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:05:02,594 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-15 12:05:02,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 12:05:02,594 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:05:02,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:05:02,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1065285143, now seen corresponding path program 1 times [2021-12-15 12:05:02,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:05:02,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602139024] [2021-12-15 12:05:02,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:05:02,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:05:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:05:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-15 12:05:02,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:05:02,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602139024] [2021-12-15 12:05:02,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602139024] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:05:02,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:05:02,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:05:02,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602754151] [2021-12-15 12:05:02,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:05:02,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:05:02,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:05:02,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:05:02,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:05:02,655 INFO L87 Difference]: Start difference. First operand 5769 states and 8489 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:03,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:05:03,305 INFO L93 Difference]: Finished difference Result 23845 states and 33919 transitions. [2021-12-15 12:05:03,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:05:03,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 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 95 [2021-12-15 12:05:03,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:05:03,339 INFO L225 Difference]: With dead ends: 23845 [2021-12-15 12:05:03,340 INFO L226 Difference]: Without dead ends: 20371 [2021-12-15 12:05:03,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-15 12:05:03,351 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 6579 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6579 SdHoareTripleChecker+Valid, 3547 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:05:03,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6579 Valid, 3547 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:05:03,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20371 states. [2021-12-15 12:05:03,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20371 to 9241. [2021-12-15 12:05:03,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9241 states, 9239 states have (on average 1.443554497239961) internal successors, (13337), 9240 states have internal predecessors, (13337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9241 states to 9241 states and 13337 transitions. [2021-12-15 12:05:03,880 INFO L78 Accepts]: Start accepts. Automaton has 9241 states and 13337 transitions. Word has length 95 [2021-12-15 12:05:03,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:05:03,880 INFO L470 AbstractCegarLoop]: Abstraction has 9241 states and 13337 transitions. [2021-12-15 12:05:03,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:03,880 INFO L276 IsEmpty]: Start isEmpty. Operand 9241 states and 13337 transitions. [2021-12-15 12:05:03,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-15 12:05:03,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:05:03,884 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-15 12:05:03,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-15 12:05:03,884 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:05:03,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:05:03,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1460899337, now seen corresponding path program 1 times [2021-12-15 12:05:03,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:05:03,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794471882] [2021-12-15 12:05:03,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:05:03,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:05:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:05:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-15 12:05:03,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:05:03,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794471882] [2021-12-15 12:05:03,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794471882] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:05:03,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:05:03,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:05:03,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485004736] [2021-12-15 12:05:03,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:05:03,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:05:03,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:05:03,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:05:03,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:05:03,939 INFO L87 Difference]: Start difference. First operand 9241 states and 13337 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:04,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:05:04,767 INFO L93 Difference]: Finished difference Result 27317 states and 38767 transitions. [2021-12-15 12:05:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:05:04,768 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-15 12:05:04,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:05:04,804 INFO L225 Difference]: With dead ends: 27317 [2021-12-15 12:05:04,805 INFO L226 Difference]: Without dead ends: 23843 [2021-12-15 12:05:04,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-15 12:05:04,815 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 6478 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6478 SdHoareTripleChecker+Valid, 3598 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:05:04,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6478 Valid, 3598 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:05:04,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23843 states. [2021-12-15 12:05:05,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23843 to 14457. [2021-12-15 12:05:05,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14457 states, 14455 states have (on average 1.4229678312002767) internal successors, (20569), 14456 states have internal predecessors, (20569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14457 states to 14457 states and 20569 transitions. [2021-12-15 12:05:05,455 INFO L78 Accepts]: Start accepts. Automaton has 14457 states and 20569 transitions. Word has length 95 [2021-12-15 12:05:05,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:05:05,456 INFO L470 AbstractCegarLoop]: Abstraction has 14457 states and 20569 transitions. [2021-12-15 12:05:05,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:05,456 INFO L276 IsEmpty]: Start isEmpty. Operand 14457 states and 20569 transitions. [2021-12-15 12:05:05,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-15 12:05:05,459 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:05:05,459 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-15 12:05:05,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-15 12:05:05,460 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:05:05,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:05:05,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1702428119, now seen corresponding path program 1 times [2021-12-15 12:05:05,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:05:05,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292006097] [2021-12-15 12:05:05,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:05:05,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:05:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:05:05,518 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-15 12:05:05,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:05:05,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292006097] [2021-12-15 12:05:05,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292006097] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:05:05,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:05:05,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:05:05,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553091299] [2021-12-15 12:05:05,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:05:05,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:05:05,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:05:05,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:05:05,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:05:05,520 INFO L87 Difference]: Start difference. First operand 14457 states and 20569 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:06,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:05:06,520 INFO L93 Difference]: Finished difference Result 30789 states and 43615 transitions. [2021-12-15 12:05:06,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:05:06,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 95 [2021-12-15 12:05:06,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:05:06,562 INFO L225 Difference]: With dead ends: 30789 [2021-12-15 12:05:06,562 INFO L226 Difference]: Without dead ends: 27315 [2021-12-15 12:05:06,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-15 12:05:06,575 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 6494 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6494 SdHoareTripleChecker+Valid, 3610 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:05:06,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6494 Valid, 3610 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:05:06,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27315 states. [2021-12-15 12:05:07,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27315 to 17929. [2021-12-15 12:05:07,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17929 states, 17927 states have (on average 1.417805544709098) internal successors, (25417), 17928 states have internal predecessors, (25417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:07,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17929 states to 17929 states and 25417 transitions. [2021-12-15 12:05:07,522 INFO L78 Accepts]: Start accepts. Automaton has 17929 states and 25417 transitions. Word has length 95 [2021-12-15 12:05:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:05:07,522 INFO L470 AbstractCegarLoop]: Abstraction has 17929 states and 25417 transitions. [2021-12-15 12:05:07,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 17929 states and 25417 transitions. [2021-12-15 12:05:07,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-15 12:05:07,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:05:07,527 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-15 12:05:07,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-15 12:05:07,527 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:05:07,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:05:07,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1357080137, now seen corresponding path program 1 times [2021-12-15 12:05:07,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:05:07,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009457426] [2021-12-15 12:05:07,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:05:07,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:05:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:05:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-15 12:05:07,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:05:07,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009457426] [2021-12-15 12:05:07,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009457426] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:05:07,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:05:07,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:05:07,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450265521] [2021-12-15 12:05:07,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:05:07,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:05:07,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:05:07,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:05:07,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:05:07,601 INFO L87 Difference]: Start difference. First operand 17929 states and 25417 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:08,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:05:08,816 INFO L93 Difference]: Finished difference Result 34261 states and 48463 transitions. [2021-12-15 12:05:08,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:05:08,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-15 12:05:08,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:05:08,859 INFO L225 Difference]: With dead ends: 34261 [2021-12-15 12:05:08,859 INFO L226 Difference]: Without dead ends: 30787 [2021-12-15 12:05:08,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-15 12:05:08,874 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 6562 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6562 SdHoareTripleChecker+Valid, 3614 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:05:08,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6562 Valid, 3614 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:05:08,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30787 states. [2021-12-15 12:05:09,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30787 to 21401. [2021-12-15 12:05:09,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21401 states, 21399 states have (on average 1.4143184260946773) internal successors, (30265), 21400 states have internal predecessors, (30265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21401 states to 21401 states and 30265 transitions. [2021-12-15 12:05:09,893 INFO L78 Accepts]: Start accepts. Automaton has 21401 states and 30265 transitions. Word has length 95 [2021-12-15 12:05:09,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:05:09,894 INFO L470 AbstractCegarLoop]: Abstraction has 21401 states and 30265 transitions. [2021-12-15 12:05:09,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:09,894 INFO L276 IsEmpty]: Start isEmpty. Operand 21401 states and 30265 transitions. [2021-12-15 12:05:09,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-15 12:05:09,899 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:05:09,899 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-15 12:05:09,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-15 12:05:09,900 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:05:09,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:05:09,900 INFO L85 PathProgramCache]: Analyzing trace with hash -63915415, now seen corresponding path program 1 times [2021-12-15 12:05:09,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:05:09,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077318677] [2021-12-15 12:05:09,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:05:09,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:05:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:05:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 12:05:09,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:05:09,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077318677] [2021-12-15 12:05:09,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077318677] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:05:09,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:05:09,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:05:09,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808482778] [2021-12-15 12:05:09,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:05:09,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:05:09,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:05:09,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:05:09,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:05:09,949 INFO L87 Difference]: Start difference. First operand 21401 states and 30265 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:05:11,344 INFO L93 Difference]: Finished difference Result 35653 states and 50431 transitions. [2021-12-15 12:05:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:05:11,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-15 12:05:11,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:05:11,393 INFO L225 Difference]: With dead ends: 35653 [2021-12-15 12:05:11,393 INFO L226 Difference]: Without dead ends: 33219 [2021-12-15 12:05:11,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-15 12:05:11,408 INFO L933 BasicCegarLoop]: 1624 mSDtfsCounter, 6561 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6561 SdHoareTripleChecker+Valid, 3543 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:05:11,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6561 Valid, 3543 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:05:11,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33219 states. [2021-12-15 12:05:12,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33219 to 23833. [2021-12-15 12:05:12,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23833 states, 23831 states have (on average 1.4136628760857706) internal successors, (33689), 23832 states have internal predecessors, (33689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:12,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23833 states to 23833 states and 33689 transitions. [2021-12-15 12:05:12,780 INFO L78 Accepts]: Start accepts. Automaton has 23833 states and 33689 transitions. Word has length 95 [2021-12-15 12:05:12,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:05:12,780 INFO L470 AbstractCegarLoop]: Abstraction has 23833 states and 33689 transitions. [2021-12-15 12:05:12,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:12,780 INFO L276 IsEmpty]: Start isEmpty. Operand 23833 states and 33689 transitions. [2021-12-15 12:05:12,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 12:05:12,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:05:12,786 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] [2021-12-15 12:05:12,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-15 12:05:12,786 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:05:12,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:05:12,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1416628636, now seen corresponding path program 1 times [2021-12-15 12:05:12,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:05:12,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117312243] [2021-12-15 12:05:12,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:05:12,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:05:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:05:12,972 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:05:12,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:05:12,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117312243] [2021-12-15 12:05:12,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117312243] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 12:05:12,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538192306] [2021-12-15 12:05:12,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:05:12,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 12:05:12,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:05:12,975 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) [2021-12-15 12:05:12,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 12:05:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:05:13,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-15 12:05:13,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 12:05:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:05:13,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 12:05:13,868 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:05:13,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538192306] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 12:05:13,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 12:05:13,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 6] total 23 [2021-12-15 12:05:13,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546681176] [2021-12-15 12:05:13,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 12:05:13,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-15 12:05:13,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:05:13,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-15 12:05:13,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2021-12-15 12:05:13,870 INFO L87 Difference]: Start difference. First operand 23833 states and 33689 transitions. Second operand has 23 states, 23 states have (on average 11.956521739130435) internal successors, (275), 23 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:36,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:05:36,105 INFO L93 Difference]: Finished difference Result 299379 states and 415318 transitions. [2021-12-15 12:05:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2021-12-15 12:05:36,105 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.956521739130435) internal successors, (275), 23 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-15 12:05:36,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:05:36,610 INFO L225 Difference]: With dead ends: 299379 [2021-12-15 12:05:36,610 INFO L226 Difference]: Without dead ends: 275685 [2021-12-15 12:05:36,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23345 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=7066, Invalid=45604, Unknown=0, NotChecked=0, Total=52670 [2021-12-15 12:05:36,705 INFO L933 BasicCegarLoop]: 1763 mSDtfsCounter, 18859 mSDsluCounter, 11656 mSDsCounter, 0 mSdLazyCounter, 4977 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18859 SdHoareTripleChecker+Valid, 13419 SdHoareTripleChecker+Invalid, 5541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 4977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-15 12:05:36,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18859 Valid, 13419 Invalid, 5541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 4977 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-15 12:05:37,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275685 states. [2021-12-15 12:05:47,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275685 to 173513. [2021-12-15 12:05:48,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173513 states, 173511 states have (on average 1.3763565422365152) internal successors, (238813), 173512 states have internal predecessors, (238813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:48,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173513 states to 173513 states and 238813 transitions. [2021-12-15 12:05:48,572 INFO L78 Accepts]: Start accepts. Automaton has 173513 states and 238813 transitions. Word has length 96 [2021-12-15 12:05:48,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:05:48,572 INFO L470 AbstractCegarLoop]: Abstraction has 173513 states and 238813 transitions. [2021-12-15 12:05:48,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.956521739130435) internal successors, (275), 23 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:48,573 INFO L276 IsEmpty]: Start isEmpty. Operand 173513 states and 238813 transitions. [2021-12-15 12:05:48,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-15 12:05:48,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:05:48,579 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:05:48,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-15 12:05:48,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 12:05:48,795 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:05:48,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:05:48,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1408959169, now seen corresponding path program 1 times [2021-12-15 12:05:48,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:05:48,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246852075] [2021-12-15 12:05:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:05:48,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:05:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:05:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:05:48,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:05:48,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246852075] [2021-12-15 12:05:48,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246852075] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 12:05:48,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146149143] [2021-12-15 12:05:48,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:05:48,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 12:05:48,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:05:48,918 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) [2021-12-15 12:05:48,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 12:05:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:05:49,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-15 12:05:49,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 12:05:49,571 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:05:49,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 12:05:50,290 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:05:50,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146149143] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 12:05:50,290 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 12:05:50,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2021-12-15 12:05:50,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605331068] [2021-12-15 12:05:50,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 12:05:50,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-15 12:05:50,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:05:50,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-15 12:05:50,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2021-12-15 12:05:50,291 INFO L87 Difference]: Start difference. First operand 173513 states and 238813 transitions. Second operand has 23 states, 23 states have (on average 9.782608695652174) internal successors, (225), 22 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)