./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/openssl/s3_srvr.blast.06.i.cil-2.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 61a0aa66b71092ec74a73b9f534556f5bbb6f25851e8b5ad307fc7dd7f051667 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 11:37:58,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:37:58,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:37:58,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:37:58,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:37:58,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:37:58,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:37:58,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:37:58,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:37:58,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:37:58,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:37:58,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:37:58,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:37:58,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:37:58,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:37:58,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:37:58,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:37:58,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:37:58,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:37:58,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:37:58,580 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:37:58,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:37:58,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:37:58,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:37:58,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:37:58,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:37:58,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:37:58,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:37:58,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:37:58,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:37:58,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:37:58,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:37:58,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:37:58,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:37:58,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:37:58,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:37:58,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:37:58,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:37:58,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:37:58,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:37:58,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:37:58,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:37:58,606 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 11:37:58,637 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:37:58,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:37:58,637 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:37:58,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:37:58,638 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:37:58,639 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:37:58,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:37:58,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:37:58,639 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:37:58,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:37:58,641 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:37:58,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 11:37:58,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:37:58,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:37:58,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:37:58,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:37:58,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:37:58,642 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:37:58,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:37:58,642 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:37:58,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:37:58,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:37:58,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:37:58,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:37:58,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:37:58,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:37:58,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:37:58,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:37:58,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 11:37:58,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 11:37:58,645 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:37:58,645 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:37:58,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:37:58,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61a0aa66b71092ec74a73b9f534556f5bbb6f25851e8b5ad307fc7dd7f051667 [2022-07-13 11:37:58,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:37:58,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:37:58,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:37:58,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:37:58,886 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:37:58,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c [2022-07-13 11:37:58,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a58d7593/ae4d8f4c9f544d9cb43d28d9e4e52dab/FLAGa91e6ea3c [2022-07-13 11:37:59,418 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:37:59,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c [2022-07-13 11:37:59,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a58d7593/ae4d8f4c9f544d9cb43d28d9e4e52dab/FLAGa91e6ea3c [2022-07-13 11:37:59,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a58d7593/ae4d8f4c9f544d9cb43d28d9e4e52dab [2022-07-13 11:37:59,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:37:59,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:37:59,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:37:59,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:37:59,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:37:59,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:37:59" (1/1) ... [2022-07-13 11:37:59,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a4afcce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:37:59, skipping insertion in model container [2022-07-13 11:37:59,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:37:59" (1/1) ... [2022-07-13 11:37:59,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:37:59,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:38:00,124 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/openssl/s3_srvr.blast.06.i.cil-2.c[78808,78821] [2022-07-13 11:38:00,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:38:00,144 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:38:00,269 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/openssl/s3_srvr.blast.06.i.cil-2.c[78808,78821] [2022-07-13 11:38:00,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:38:00,298 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:38:00,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:00 WrapperNode [2022-07-13 11:38:00,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:38:00,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:38:00,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:38:00,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:38:00,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:00" (1/1) ... [2022-07-13 11:38:00,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:00" (1/1) ... [2022-07-13 11:38:00,390 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 816 [2022-07-13 11:38:00,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:38:00,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:38:00,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:38:00,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:38:00,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:00" (1/1) ... [2022-07-13 11:38:00,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:00" (1/1) ... [2022-07-13 11:38:00,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:00" (1/1) ... [2022-07-13 11:38:00,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:00" (1/1) ... [2022-07-13 11:38:00,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:00" (1/1) ... [2022-07-13 11:38:00,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:00" (1/1) ... [2022-07-13 11:38:00,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:00" (1/1) ... [2022-07-13 11:38:00,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:38:00,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:38:00,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:38:00,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:38:00,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:00" (1/1) ... [2022-07-13 11:38:00,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:38:00,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:38:00,536 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) [2022-07-13 11:38:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:38:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 11:38:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 11:38:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 11:38:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 11:38:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 11:38:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 11:38:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:38:00,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:38:00,567 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 [2022-07-13 11:38:00,783 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:38:00,784 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:38:00,826 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:38:03,233 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-13 11:38:03,234 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-13 11:38:03,234 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:38:03,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:38:03,241 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 11:38:03,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:38:03 BoogieIcfgContainer [2022-07-13 11:38:03,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:38:03,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:38:03,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:38:03,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:38:03,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:37:59" (1/3) ... [2022-07-13 11:38:03,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e28f265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:38:03, skipping insertion in model container [2022-07-13 11:38:03,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:00" (2/3) ... [2022-07-13 11:38:03,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e28f265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:38:03, skipping insertion in model container [2022-07-13 11:38:03,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:38:03" (3/3) ... [2022-07-13 11:38:03,251 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.06.i.cil-2.c [2022-07-13 11:38:03,264 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:38:03,264 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:38:03,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:38:03,326 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71a19376, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7cc9feb [2022-07-13 11:38:03,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:38:03,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 160 states have (on average 1.7375) internal successors, (278), 161 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:03,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-13 11:38:03,343 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:03,343 INFO L195 NwaCegarLoop]: 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] [2022-07-13 11:38:03,343 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:03,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:03,347 INFO L85 PathProgramCache]: Analyzing trace with hash 271453869, now seen corresponding path program 1 times [2022-07-13 11:38:03,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:03,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627812111] [2022-07-13 11:38:03,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:03,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:03,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:03,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627812111] [2022-07-13 11:38:03,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627812111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:03,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:03,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:03,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036226522] [2022-07-13 11:38:03,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:03,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:03,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:03,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:03,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:03,968 INFO L87 Difference]: Start difference. First operand has 162 states, 160 states have (on average 1.7375) internal successors, (278), 161 states have internal predecessors, (278), 0 states have call successors, (0), 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 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:04,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:04,779 INFO L93 Difference]: Finished difference Result 455 states and 784 transitions. [2022-07-13 11:38:04,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:04,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-07-13 11:38:04,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:04,798 INFO L225 Difference]: With dead ends: 455 [2022-07-13 11:38:04,798 INFO L226 Difference]: Without dead ends: 278 [2022-07-13 11:38:04,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:04,804 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 176 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:04,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 511 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:38:04,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-07-13 11:38:04,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 189. [2022-07-13 11:38:04,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.6329787234042554) internal successors, (307), 188 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 307 transitions. [2022-07-13 11:38:04,851 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 307 transitions. Word has length 47 [2022-07-13 11:38:04,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:04,853 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 307 transitions. [2022-07-13 11:38:04,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:04,853 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 307 transitions. [2022-07-13 11:38:04,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-13 11:38:04,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:04,855 INFO L195 NwaCegarLoop]: 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] [2022-07-13 11:38:04,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 11:38:04,856 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:04,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:04,857 INFO L85 PathProgramCache]: Analyzing trace with hash -72299220, now seen corresponding path program 1 times [2022-07-13 11:38:04,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:04,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901951432] [2022-07-13 11:38:04,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:04,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:05,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:05,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901951432] [2022-07-13 11:38:05,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901951432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:05,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:05,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:05,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827268950] [2022-07-13 11:38:05,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:05,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:05,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:05,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:05,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:05,082 INFO L87 Difference]: Start difference. First operand 189 states and 307 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:05,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:05,774 INFO L93 Difference]: Finished difference Result 396 states and 641 transitions. [2022-07-13 11:38:05,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:05,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-07-13 11:38:05,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:05,777 INFO L225 Difference]: With dead ends: 396 [2022-07-13 11:38:05,777 INFO L226 Difference]: Without dead ends: 217 [2022-07-13 11:38:05,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:05,779 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 22 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:05,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 541 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:38:05,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-07-13 11:38:05,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 200. [2022-07-13 11:38:05,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.6381909547738693) internal successors, (326), 199 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 326 transitions. [2022-07-13 11:38:05,800 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 326 transitions. Word has length 48 [2022-07-13 11:38:05,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:05,800 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 326 transitions. [2022-07-13 11:38:05,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:05,800 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 326 transitions. [2022-07-13 11:38:05,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-13 11:38:05,802 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:05,803 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 11:38:05,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 11:38:05,803 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:05,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:05,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1865586560, now seen corresponding path program 1 times [2022-07-13 11:38:05,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:05,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965470414] [2022-07-13 11:38:05,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:05,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:05,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:05,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:05,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965470414] [2022-07-13 11:38:05,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965470414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:05,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:05,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:05,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947571054] [2022-07-13 11:38:05,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:05,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:05,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:05,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:05,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:05,931 INFO L87 Difference]: Start difference. First operand 200 states and 326 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:06,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:06,849 INFO L93 Difference]: Finished difference Result 546 states and 895 transitions. [2022-07-13 11:38:06,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:06,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-07-13 11:38:06,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:06,852 INFO L225 Difference]: With dead ends: 546 [2022-07-13 11:38:06,852 INFO L226 Difference]: Without dead ends: 367 [2022-07-13 11:38:06,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:06,854 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 165 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:06,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 730 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 11:38:06,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-07-13 11:38:06,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 232. [2022-07-13 11:38:06,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.632034632034632) internal successors, (377), 231 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:06,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 377 transitions. [2022-07-13 11:38:06,887 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 377 transitions. Word has length 61 [2022-07-13 11:38:06,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:06,888 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 377 transitions. [2022-07-13 11:38:06,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:06,888 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 377 transitions. [2022-07-13 11:38:06,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 11:38:06,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:06,896 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 11:38:06,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 11:38:06,897 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:06,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:06,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1829403441, now seen corresponding path program 1 times [2022-07-13 11:38:06,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:06,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772813616] [2022-07-13 11:38:06,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:06,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:07,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:07,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772813616] [2022-07-13 11:38:07,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772813616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:07,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:07,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:07,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424583515] [2022-07-13 11:38:07,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:07,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:07,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:07,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:07,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:07,051 INFO L87 Difference]: Start difference. First operand 232 states and 377 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:07,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:07,585 INFO L93 Difference]: Finished difference Result 554 states and 898 transitions. [2022-07-13 11:38:07,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:07,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-07-13 11:38:07,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:07,587 INFO L225 Difference]: With dead ends: 554 [2022-07-13 11:38:07,587 INFO L226 Difference]: Without dead ends: 343 [2022-07-13 11:38:07,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:07,589 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 170 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:07,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 406 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:38:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-13 11:38:07,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 232. [2022-07-13 11:38:07,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.6147186147186148) internal successors, (373), 231 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 373 transitions. [2022-07-13 11:38:07,609 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 373 transitions. Word has length 62 [2022-07-13 11:38:07,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:07,612 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 373 transitions. [2022-07-13 11:38:07,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:07,617 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 373 transitions. [2022-07-13 11:38:07,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 11:38:07,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:07,621 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 11:38:07,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 11:38:07,622 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:07,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:07,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1620873285, now seen corresponding path program 1 times [2022-07-13 11:38:07,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:07,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692889142] [2022-07-13 11:38:07,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:07,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:07,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:07,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:07,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692889142] [2022-07-13 11:38:07,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692889142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:07,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:07,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:07,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58257620] [2022-07-13 11:38:07,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:07,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:07,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:07,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:07,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:07,787 INFO L87 Difference]: Start difference. First operand 232 states and 373 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:08,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:08,349 INFO L93 Difference]: Finished difference Result 459 states and 735 transitions. [2022-07-13 11:38:08,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:08,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-07-13 11:38:08,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:08,351 INFO L225 Difference]: With dead ends: 459 [2022-07-13 11:38:08,351 INFO L226 Difference]: Without dead ends: 248 [2022-07-13 11:38:08,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:08,353 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 26 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:08,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 545 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:38:08,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-07-13 11:38:08,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 232. [2022-07-13 11:38:08,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.6103896103896105) internal successors, (372), 231 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:08,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 372 transitions. [2022-07-13 11:38:08,362 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 372 transitions. Word has length 62 [2022-07-13 11:38:08,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:08,363 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 372 transitions. [2022-07-13 11:38:08,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:08,363 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 372 transitions. [2022-07-13 11:38:08,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 11:38:08,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:08,364 INFO L195 NwaCegarLoop]: 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] [2022-07-13 11:38:08,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 11:38:08,365 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:08,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:08,366 INFO L85 PathProgramCache]: Analyzing trace with hash 519909764, now seen corresponding path program 1 times [2022-07-13 11:38:08,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:08,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515254986] [2022-07-13 11:38:08,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:08,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:08,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:08,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515254986] [2022-07-13 11:38:08,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515254986] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:08,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:08,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:08,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86298581] [2022-07-13 11:38:08,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:08,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:08,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:08,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:08,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:08,483 INFO L87 Difference]: Start difference. First operand 232 states and 372 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:08,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:08,876 INFO L93 Difference]: Finished difference Result 458 states and 733 transitions. [2022-07-13 11:38:08,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:08,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-07-13 11:38:08,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:08,878 INFO L225 Difference]: With dead ends: 458 [2022-07-13 11:38:08,878 INFO L226 Difference]: Without dead ends: 247 [2022-07-13 11:38:08,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:08,879 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 19 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:08,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 547 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:38:08,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-07-13 11:38:08,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 232. [2022-07-13 11:38:08,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.606060606060606) internal successors, (371), 231 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:08,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 371 transitions. [2022-07-13 11:38:08,886 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 371 transitions. Word has length 62 [2022-07-13 11:38:08,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:08,887 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 371 transitions. [2022-07-13 11:38:08,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:08,887 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 371 transitions. [2022-07-13 11:38:08,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 11:38:08,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:08,888 INFO L195 NwaCegarLoop]: 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] [2022-07-13 11:38:08,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 11:38:08,889 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:08,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:08,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1154887876, now seen corresponding path program 1 times [2022-07-13 11:38:08,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:08,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914987161] [2022-07-13 11:38:08,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:08,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:08,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:08,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914987161] [2022-07-13 11:38:08,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914987161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:08,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:08,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:08,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967887279] [2022-07-13 11:38:08,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:08,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:08,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:08,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:08,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:08,987 INFO L87 Difference]: Start difference. First operand 232 states and 371 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:09,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:09,599 INFO L93 Difference]: Finished difference Result 554 states and 889 transitions. [2022-07-13 11:38:09,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:09,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-07-13 11:38:09,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:09,602 INFO L225 Difference]: With dead ends: 554 [2022-07-13 11:38:09,602 INFO L226 Difference]: Without dead ends: 343 [2022-07-13 11:38:09,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:09,603 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 163 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:09,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 406 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:38:09,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-13 11:38:09,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 233. [2022-07-13 11:38:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.5948275862068966) internal successors, (370), 232 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:09,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 370 transitions. [2022-07-13 11:38:09,611 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 370 transitions. Word has length 62 [2022-07-13 11:38:09,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:09,611 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 370 transitions. [2022-07-13 11:38:09,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:09,612 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 370 transitions. [2022-07-13 11:38:09,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 11:38:09,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:09,613 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 11:38:09,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 11:38:09,613 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:09,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:09,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1662386487, now seen corresponding path program 1 times [2022-07-13 11:38:09,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:09,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952307217] [2022-07-13 11:38:09,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:09,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:09,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:09,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:09,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952307217] [2022-07-13 11:38:09,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952307217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:09,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:09,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:09,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446041106] [2022-07-13 11:38:09,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:09,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:09,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:09,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:09,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:09,700 INFO L87 Difference]: Start difference. First operand 233 states and 370 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:10,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:10,231 INFO L93 Difference]: Finished difference Result 458 states and 729 transitions. [2022-07-13 11:38:10,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:10,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-13 11:38:10,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:10,233 INFO L225 Difference]: With dead ends: 458 [2022-07-13 11:38:10,233 INFO L226 Difference]: Without dead ends: 246 [2022-07-13 11:38:10,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:10,234 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 22 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:10,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 551 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:38:10,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-07-13 11:38:10,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 233. [2022-07-13 11:38:10,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.5905172413793103) internal successors, (369), 232 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:10,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 369 transitions. [2022-07-13 11:38:10,241 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 369 transitions. Word has length 63 [2022-07-13 11:38:10,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:10,242 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 369 transitions. [2022-07-13 11:38:10,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:10,242 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 369 transitions. [2022-07-13 11:38:10,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 11:38:10,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:10,243 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 11:38:10,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 11:38:10,244 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:10,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:10,244 INFO L85 PathProgramCache]: Analyzing trace with hash -838476330, now seen corresponding path program 1 times [2022-07-13 11:38:10,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:10,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239100366] [2022-07-13 11:38:10,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:10,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:10,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:10,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239100366] [2022-07-13 11:38:10,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239100366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:10,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:10,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:10,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383372451] [2022-07-13 11:38:10,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:10,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:10,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:10,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:10,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:10,335 INFO L87 Difference]: Start difference. First operand 233 states and 369 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2022-07-13 11:38:10,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:10,843 INFO L93 Difference]: Finished difference Result 458 states and 728 transitions. [2022-07-13 11:38:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:10,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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 [2022-07-13 11:38:10,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:10,845 INFO L225 Difference]: With dead ends: 458 [2022-07-13 11:38:10,845 INFO L226 Difference]: Without dead ends: 246 [2022-07-13 11:38:10,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:10,846 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 20 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:10,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 551 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:38:10,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-07-13 11:38:10,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 233. [2022-07-13 11:38:10,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.5862068965517242) internal successors, (368), 232 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:10,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 368 transitions. [2022-07-13 11:38:10,852 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 368 transitions. Word has length 64 [2022-07-13 11:38:10,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:10,852 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 368 transitions. [2022-07-13 11:38:10,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2022-07-13 11:38:10,853 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 368 transitions. [2022-07-13 11:38:10,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 11:38:10,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:10,854 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 11:38:10,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 11:38:10,854 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:10,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:10,854 INFO L85 PathProgramCache]: Analyzing trace with hash 2036454322, now seen corresponding path program 1 times [2022-07-13 11:38:10,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:10,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143596061] [2022-07-13 11:38:10,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:10,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:10,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:10,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:10,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143596061] [2022-07-13 11:38:10,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143596061] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:10,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:10,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:10,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729349626] [2022-07-13 11:38:10,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:10,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:10,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:10,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:10,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:10,959 INFO L87 Difference]: Start difference. First operand 233 states and 368 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:11,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:11,791 INFO L93 Difference]: Finished difference Result 448 states and 714 transitions. [2022-07-13 11:38:11,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:11,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-13 11:38:11,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:11,793 INFO L225 Difference]: With dead ends: 448 [2022-07-13 11:38:11,793 INFO L226 Difference]: Without dead ends: 236 [2022-07-13 11:38:11,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:11,794 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 11 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:11,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 565 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:38:11,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-13 11:38:11,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 233. [2022-07-13 11:38:11,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.581896551724138) internal successors, (367), 232 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:11,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 367 transitions. [2022-07-13 11:38:11,800 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 367 transitions. Word has length 65 [2022-07-13 11:38:11,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:11,800 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 367 transitions. [2022-07-13 11:38:11,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:11,801 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 367 transitions. [2022-07-13 11:38:11,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 11:38:11,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:11,801 INFO L195 NwaCegarLoop]: 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] [2022-07-13 11:38:11,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 11:38:11,802 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:11,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:11,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1556245834, now seen corresponding path program 1 times [2022-07-13 11:38:11,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:11,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289185341] [2022-07-13 11:38:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:11,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:11,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:11,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289185341] [2022-07-13 11:38:11,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289185341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:11,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:11,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:11,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073171689] [2022-07-13 11:38:11,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:11,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:11,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:11,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:11,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:11,895 INFO L87 Difference]: Start difference. First operand 233 states and 367 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:12,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:13,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:13,233 INFO L93 Difference]: Finished difference Result 485 states and 769 transitions. [2022-07-13 11:38:13,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:13,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-13 11:38:13,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:13,235 INFO L225 Difference]: With dead ends: 485 [2022-07-13 11:38:13,235 INFO L226 Difference]: Without dead ends: 273 [2022-07-13 11:38:13,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:13,236 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 31 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:13,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 569 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 11:38:13,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-07-13 11:38:13,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 255. [2022-07-13 11:38:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.5826771653543308) internal successors, (402), 254 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:13,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 402 transitions. [2022-07-13 11:38:13,242 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 402 transitions. Word has length 65 [2022-07-13 11:38:13,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:13,243 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 402 transitions. [2022-07-13 11:38:13,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:13,243 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 402 transitions. [2022-07-13 11:38:13,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 11:38:13,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:13,244 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-07-13 11:38:13,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 11:38:13,244 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:13,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:13,244 INFO L85 PathProgramCache]: Analyzing trace with hash -120356007, now seen corresponding path program 1 times [2022-07-13 11:38:13,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:13,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131464084] [2022-07-13 11:38:13,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:13,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:13,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:13,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131464084] [2022-07-13 11:38:13,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131464084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:13,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:13,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:13,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438188763] [2022-07-13 11:38:13,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:13,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:13,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:13,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:13,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:13,359 INFO L87 Difference]: Start difference. First operand 255 states and 402 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:14,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:14,326 INFO L93 Difference]: Finished difference Result 599 states and 953 transitions. [2022-07-13 11:38:14,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:14,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-07-13 11:38:14,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:14,328 INFO L225 Difference]: With dead ends: 599 [2022-07-13 11:38:14,328 INFO L226 Difference]: Without dead ends: 365 [2022-07-13 11:38:14,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:14,329 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 168 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:14,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 406 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 11:38:14,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-07-13 11:38:14,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 255. [2022-07-13 11:38:14,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.5669291338582678) internal successors, (398), 254 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:14,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 398 transitions. [2022-07-13 11:38:14,337 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 398 transitions. Word has length 79 [2022-07-13 11:38:14,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:14,337 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 398 transitions. [2022-07-13 11:38:14,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:14,338 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 398 transitions. [2022-07-13 11:38:14,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 11:38:14,339 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:14,339 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 11:38:14,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 11:38:14,339 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:14,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:14,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2020427042, now seen corresponding path program 1 times [2022-07-13 11:38:14,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:14,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884471438] [2022-07-13 11:38:14,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:14,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:14,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:14,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884471438] [2022-07-13 11:38:14,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884471438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:14,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:14,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:14,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120225006] [2022-07-13 11:38:14,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:14,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:14,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:14,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:14,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:14,457 INFO L87 Difference]: Start difference. First operand 255 states and 398 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:15,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:15,575 INFO L93 Difference]: Finished difference Result 506 states and 794 transitions. [2022-07-13 11:38:15,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:15,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-07-13 11:38:15,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:15,577 INFO L225 Difference]: With dead ends: 506 [2022-07-13 11:38:15,577 INFO L226 Difference]: Without dead ends: 272 [2022-07-13 11:38:15,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:15,578 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 33 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:15,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 571 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 11:38:15,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-07-13 11:38:15,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 255. [2022-07-13 11:38:15,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.562992125984252) internal successors, (397), 254 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 397 transitions. [2022-07-13 11:38:15,584 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 397 transitions. Word has length 79 [2022-07-13 11:38:15,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:15,584 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 397 transitions. [2022-07-13 11:38:15,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:15,584 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 397 transitions. [2022-07-13 11:38:15,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-13 11:38:15,585 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:15,585 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-13 11:38:15,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 11:38:15,585 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:15,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:15,586 INFO L85 PathProgramCache]: Analyzing trace with hash 933781849, now seen corresponding path program 1 times [2022-07-13 11:38:15,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:15,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222713670] [2022-07-13 11:38:15,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:15,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:15,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:15,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222713670] [2022-07-13 11:38:15,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222713670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:15,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:15,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:15,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613202709] [2022-07-13 11:38:15,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:15,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:15,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:15,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:15,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:15,683 INFO L87 Difference]: Start difference. First operand 255 states and 397 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:17,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:17,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:17,755 INFO L93 Difference]: Finished difference Result 599 states and 943 transitions. [2022-07-13 11:38:17,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:17,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-07-13 11:38:17,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:17,757 INFO L225 Difference]: With dead ends: 599 [2022-07-13 11:38:17,757 INFO L226 Difference]: Without dead ends: 365 [2022-07-13 11:38:17,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:17,758 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 166 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:17,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 406 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 11:38:17,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-07-13 11:38:17,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 255. [2022-07-13 11:38:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.547244094488189) internal successors, (393), 254 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:17,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 393 transitions. [2022-07-13 11:38:17,765 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 393 transitions. Word has length 80 [2022-07-13 11:38:17,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:17,765 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 393 transitions. [2022-07-13 11:38:17,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:17,766 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 393 transitions. [2022-07-13 11:38:17,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-13 11:38:17,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:17,767 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-07-13 11:38:17,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 11:38:17,767 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:17,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:17,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1950383628, now seen corresponding path program 1 times [2022-07-13 11:38:17,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:17,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354256829] [2022-07-13 11:38:17,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:17,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:17,886 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:17,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:17,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354256829] [2022-07-13 11:38:17,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354256829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:17,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:17,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:17,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544000758] [2022-07-13 11:38:17,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:17,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:17,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:17,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:17,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:17,889 INFO L87 Difference]: Start difference. First operand 255 states and 393 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:19,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:20,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:20,309 INFO L93 Difference]: Finished difference Result 599 states and 935 transitions. [2022-07-13 11:38:20,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:20,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-07-13 11:38:20,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:20,311 INFO L225 Difference]: With dead ends: 599 [2022-07-13 11:38:20,311 INFO L226 Difference]: Without dead ends: 365 [2022-07-13 11:38:20,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:20,312 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 164 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 61 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:20,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 406 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 259 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 11:38:20,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-07-13 11:38:20,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 255. [2022-07-13 11:38:20,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.531496062992126) internal successors, (389), 254 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 389 transitions. [2022-07-13 11:38:20,318 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 389 transitions. Word has length 81 [2022-07-13 11:38:20,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:20,319 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 389 transitions. [2022-07-13 11:38:20,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:20,319 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 389 transitions. [2022-07-13 11:38:20,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-13 11:38:20,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:20,320 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-07-13 11:38:20,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 11:38:20,321 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:20,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:20,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1927066452, now seen corresponding path program 1 times [2022-07-13 11:38:20,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:20,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826511043] [2022-07-13 11:38:20,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:20,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:20,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:20,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826511043] [2022-07-13 11:38:20,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826511043] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:20,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:20,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:20,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524063454] [2022-07-13 11:38:20,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:20,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:20,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:20,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:20,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:20,417 INFO L87 Difference]: Start difference. First operand 255 states and 389 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:21,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:21,396 INFO L93 Difference]: Finished difference Result 589 states and 914 transitions. [2022-07-13 11:38:21,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:21,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-07-13 11:38:21,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:21,398 INFO L225 Difference]: With dead ends: 589 [2022-07-13 11:38:21,398 INFO L226 Difference]: Without dead ends: 355 [2022-07-13 11:38:21,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:21,399 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 155 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:21,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 426 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 11:38:21,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-07-13 11:38:21,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 255. [2022-07-13 11:38:21,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.515748031496063) internal successors, (385), 254 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:21,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 385 transitions. [2022-07-13 11:38:21,407 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 385 transitions. Word has length 82 [2022-07-13 11:38:21,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:21,407 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 385 transitions. [2022-07-13 11:38:21,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:21,408 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 385 transitions. [2022-07-13 11:38:21,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-13 11:38:21,409 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:21,409 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 11:38:21,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 11:38:21,409 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:21,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:21,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2120868205, now seen corresponding path program 1 times [2022-07-13 11:38:21,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:21,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963133241] [2022-07-13 11:38:21,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:21,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:21,536 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:38:21,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:21,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963133241] [2022-07-13 11:38:21,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963133241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:21,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:21,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:21,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044292712] [2022-07-13 11:38:21,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:21,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:21,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:21,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:21,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:21,540 INFO L87 Difference]: Start difference. First operand 255 states and 385 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:22,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:22,466 INFO L93 Difference]: Finished difference Result 589 states and 906 transitions. [2022-07-13 11:38:22,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:22,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-07-13 11:38:22,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:22,468 INFO L225 Difference]: With dead ends: 589 [2022-07-13 11:38:22,468 INFO L226 Difference]: Without dead ends: 355 [2022-07-13 11:38:22,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:22,469 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 129 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:22,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 456 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 11:38:22,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-07-13 11:38:22,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 278. [2022-07-13 11:38:22,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.552346570397112) internal successors, (430), 277 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:22,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 430 transitions. [2022-07-13 11:38:22,476 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 430 transitions. Word has length 87 [2022-07-13 11:38:22,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:22,476 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 430 transitions. [2022-07-13 11:38:22,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:22,476 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 430 transitions. [2022-07-13 11:38:22,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-13 11:38:22,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:22,477 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 11:38:22,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 11:38:22,478 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:22,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:22,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1055569381, now seen corresponding path program 1 times [2022-07-13 11:38:22,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:22,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950740538] [2022-07-13 11:38:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:22,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:38:22,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:22,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950740538] [2022-07-13 11:38:22,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950740538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:22,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:22,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:22,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337551496] [2022-07-13 11:38:22,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:22,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:22,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:22,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:22,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:22,587 INFO L87 Difference]: Start difference. First operand 278 states and 430 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:23,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:23,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:23,966 INFO L93 Difference]: Finished difference Result 625 states and 974 transitions. [2022-07-13 11:38:23,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:23,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-07-13 11:38:23,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:23,968 INFO L225 Difference]: With dead ends: 625 [2022-07-13 11:38:23,968 INFO L226 Difference]: Without dead ends: 368 [2022-07-13 11:38:23,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:23,969 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 90 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:23,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 547 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 11:38:23,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-07-13 11:38:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 312. [2022-07-13 11:38:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.5530546623794212) internal successors, (483), 311 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 483 transitions. [2022-07-13 11:38:23,977 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 483 transitions. Word has length 115 [2022-07-13 11:38:23,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:23,977 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 483 transitions. [2022-07-13 11:38:23,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 483 transitions. [2022-07-13 11:38:23,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-13 11:38:23,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:23,979 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 11:38:23,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 11:38:23,979 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:23,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:23,980 INFO L85 PathProgramCache]: Analyzing trace with hash -978668583, now seen corresponding path program 1 times [2022-07-13 11:38:23,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:23,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173186545] [2022-07-13 11:38:23,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:23,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:38:24,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:24,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173186545] [2022-07-13 11:38:24,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173186545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:24,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:24,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:24,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486115800] [2022-07-13 11:38:24,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:24,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:24,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:24,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:24,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:24,122 INFO L87 Difference]: Start difference. First operand 312 states and 483 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:25,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:25,312 INFO L93 Difference]: Finished difference Result 756 states and 1184 transitions. [2022-07-13 11:38:25,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:25,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-07-13 11:38:25,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:25,315 INFO L225 Difference]: With dead ends: 756 [2022-07-13 11:38:25,316 INFO L226 Difference]: Without dead ends: 465 [2022-07-13 11:38:25,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:25,317 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 135 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:25,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 436 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 11:38:25,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-07-13 11:38:25,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 342. [2022-07-13 11:38:25,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 1.5601173020527859) internal successors, (532), 341 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:25,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 532 transitions. [2022-07-13 11:38:25,326 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 532 transitions. Word has length 115 [2022-07-13 11:38:25,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:25,327 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 532 transitions. [2022-07-13 11:38:25,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:25,327 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 532 transitions. [2022-07-13 11:38:25,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-13 11:38:25,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:25,328 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:25,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 11:38:25,329 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:25,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:25,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1185621468, now seen corresponding path program 1 times [2022-07-13 11:38:25,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:25,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89059466] [2022-07-13 11:38:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:25,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:25,433 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:38:25,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:25,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89059466] [2022-07-13 11:38:25,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89059466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:25,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:25,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:25,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972478536] [2022-07-13 11:38:25,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:25,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:25,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:25,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:25,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:25,436 INFO L87 Difference]: Start difference. First operand 342 states and 532 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:26,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:26,077 INFO L93 Difference]: Finished difference Result 780 states and 1219 transitions. [2022-07-13 11:38:26,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:26,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2022-07-13 11:38:26,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:26,079 INFO L225 Difference]: With dead ends: 780 [2022-07-13 11:38:26,079 INFO L226 Difference]: Without dead ends: 459 [2022-07-13 11:38:26,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:26,080 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 131 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:26,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 424 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:38:26,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-07-13 11:38:26,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 379. [2022-07-13 11:38:26,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.5634920634920635) internal successors, (591), 378 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:26,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 591 transitions. [2022-07-13 11:38:26,089 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 591 transitions. Word has length 121 [2022-07-13 11:38:26,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:26,090 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 591 transitions. [2022-07-13 11:38:26,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:26,090 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 591 transitions. [2022-07-13 11:38:26,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-13 11:38:26,091 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:26,091 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:26,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 11:38:26,092 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:26,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:26,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1466195913, now seen corresponding path program 1 times [2022-07-13 11:38:26,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:26,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333982538] [2022-07-13 11:38:26,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:26,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:38:26,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:26,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333982538] [2022-07-13 11:38:26,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333982538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:26,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:26,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:26,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906651870] [2022-07-13 11:38:26,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:26,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:26,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:26,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:26,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:26,210 INFO L87 Difference]: Start difference. First operand 379 states and 591 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:26,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:26,809 INFO L93 Difference]: Finished difference Result 824 states and 1290 transitions. [2022-07-13 11:38:26,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:26,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-07-13 11:38:26,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:26,811 INFO L225 Difference]: With dead ends: 824 [2022-07-13 11:38:26,811 INFO L226 Difference]: Without dead ends: 466 [2022-07-13 11:38:26,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:26,812 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 79 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:26,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 549 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:38:26,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-07-13 11:38:26,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 419. [2022-07-13 11:38:26,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.5645933014354068) internal successors, (654), 418 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:26,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 654 transitions. [2022-07-13 11:38:26,823 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 654 transitions. Word has length 122 [2022-07-13 11:38:26,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:26,823 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 654 transitions. [2022-07-13 11:38:26,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:26,824 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 654 transitions. [2022-07-13 11:38:26,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-13 11:38:26,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:26,825 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:26,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 11:38:26,826 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:26,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:26,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1225956167, now seen corresponding path program 1 times [2022-07-13 11:38:26,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:26,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122938061] [2022-07-13 11:38:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:26,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-13 11:38:26,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:26,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122938061] [2022-07-13 11:38:26,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122938061] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:26,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:26,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:26,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511287224] [2022-07-13 11:38:26,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:26,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:26,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:26,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:26,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:26,944 INFO L87 Difference]: Start difference. First operand 419 states and 654 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:27,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:27,439 INFO L93 Difference]: Finished difference Result 854 states and 1337 transitions. [2022-07-13 11:38:27,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:27,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-07-13 11:38:27,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:27,442 INFO L225 Difference]: With dead ends: 854 [2022-07-13 11:38:27,442 INFO L226 Difference]: Without dead ends: 456 [2022-07-13 11:38:27,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:27,443 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 28 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:27,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 649 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:38:27,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-07-13 11:38:27,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 443. [2022-07-13 11:38:27,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.5588235294117647) internal successors, (689), 442 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:27,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 689 transitions. [2022-07-13 11:38:27,453 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 689 transitions. Word has length 122 [2022-07-13 11:38:27,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:27,454 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 689 transitions. [2022-07-13 11:38:27,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:27,454 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 689 transitions. [2022-07-13 11:38:27,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-13 11:38:27,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:27,456 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:27,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 11:38:27,456 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:27,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:27,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1414034971, now seen corresponding path program 1 times [2022-07-13 11:38:27,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:27,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830449017] [2022-07-13 11:38:27,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:27,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:38:27,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:27,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830449017] [2022-07-13 11:38:27,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830449017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:27,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:27,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:27,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211340860] [2022-07-13 11:38:27,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:27,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:27,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:27,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:27,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:27,576 INFO L87 Difference]: Start difference. First operand 443 states and 689 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:28,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:28,319 INFO L93 Difference]: Finished difference Result 903 states and 1407 transitions. [2022-07-13 11:38:28,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:28,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 129 [2022-07-13 11:38:28,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:28,322 INFO L225 Difference]: With dead ends: 903 [2022-07-13 11:38:28,322 INFO L226 Difference]: Without dead ends: 481 [2022-07-13 11:38:28,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:28,323 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 61 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:28,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 555 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:38:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-07-13 11:38:28,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 446. [2022-07-13 11:38:28,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.5550561797752809) internal successors, (692), 445 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:28,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 692 transitions. [2022-07-13 11:38:28,332 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 692 transitions. Word has length 129 [2022-07-13 11:38:28,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:28,333 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 692 transitions. [2022-07-13 11:38:28,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:28,333 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 692 transitions. [2022-07-13 11:38:28,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-13 11:38:28,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:28,335 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:28,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 11:38:28,335 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:28,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:28,335 INFO L85 PathProgramCache]: Analyzing trace with hash 417072415, now seen corresponding path program 1 times [2022-07-13 11:38:28,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:28,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219893750] [2022-07-13 11:38:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:28,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:28,431 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-13 11:38:28,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:28,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219893750] [2022-07-13 11:38:28,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219893750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:28,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:28,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:28,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496161771] [2022-07-13 11:38:28,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:28,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:28,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:28,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:28,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:28,434 INFO L87 Difference]: Start difference. First operand 446 states and 692 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 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) [2022-07-13 11:38:29,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:29,418 INFO L93 Difference]: Finished difference Result 905 states and 1408 transitions. [2022-07-13 11:38:29,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:29,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 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 136 [2022-07-13 11:38:29,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:29,420 INFO L225 Difference]: With dead ends: 905 [2022-07-13 11:38:29,420 INFO L226 Difference]: Without dead ends: 480 [2022-07-13 11:38:29,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:29,422 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 83 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:29,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 557 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 11:38:29,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-07-13 11:38:29,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 446. [2022-07-13 11:38:29,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.552808988764045) internal successors, (691), 445 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:29,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 691 transitions. [2022-07-13 11:38:29,431 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 691 transitions. Word has length 136 [2022-07-13 11:38:29,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:29,432 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 691 transitions. [2022-07-13 11:38:29,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 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) [2022-07-13 11:38:29,432 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 691 transitions. [2022-07-13 11:38:29,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-13 11:38:29,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:29,434 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:29,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 11:38:29,434 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:29,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:29,435 INFO L85 PathProgramCache]: Analyzing trace with hash -466436575, now seen corresponding path program 1 times [2022-07-13 11:38:29,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:29,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717872805] [2022-07-13 11:38:29,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:29,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-13 11:38:29,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:29,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717872805] [2022-07-13 11:38:29,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717872805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:29,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:29,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:29,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385247590] [2022-07-13 11:38:29,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:29,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:29,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:29,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:29,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:29,534 INFO L87 Difference]: Start difference. First operand 446 states and 691 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 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) [2022-07-13 11:38:30,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:31,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:31,123 INFO L93 Difference]: Finished difference Result 883 states and 1374 transitions. [2022-07-13 11:38:31,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:31,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 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 136 [2022-07-13 11:38:31,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:31,126 INFO L225 Difference]: With dead ends: 883 [2022-07-13 11:38:31,126 INFO L226 Difference]: Without dead ends: 458 [2022-07-13 11:38:31,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:31,127 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 33 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:31,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 649 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 11:38:31,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-07-13 11:38:31,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 446. [2022-07-13 11:38:31,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.550561797752809) internal successors, (690), 445 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 690 transitions. [2022-07-13 11:38:31,138 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 690 transitions. Word has length 136 [2022-07-13 11:38:31,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:31,138 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 690 transitions. [2022-07-13 11:38:31,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 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) [2022-07-13 11:38:31,138 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 690 transitions. [2022-07-13 11:38:31,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-13 11:38:31,140 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:31,140 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 11:38:31,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 11:38:31,140 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:31,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:31,141 INFO L85 PathProgramCache]: Analyzing trace with hash 204789508, now seen corresponding path program 1 times [2022-07-13 11:38:31,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:31,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798792073] [2022-07-13 11:38:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:31,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:31,268 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-13 11:38:31,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:31,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798792073] [2022-07-13 11:38:31,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798792073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:31,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:31,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:31,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590012560] [2022-07-13 11:38:31,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:31,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:31,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:31,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:31,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:31,272 INFO L87 Difference]: Start difference. First operand 446 states and 690 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:31,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:31,916 INFO L93 Difference]: Finished difference Result 988 states and 1534 transitions. [2022-07-13 11:38:31,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:31,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 142 [2022-07-13 11:38:31,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:31,919 INFO L225 Difference]: With dead ends: 988 [2022-07-13 11:38:31,919 INFO L226 Difference]: Without dead ends: 563 [2022-07-13 11:38:31,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:31,920 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 138 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:31,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 456 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:38:31,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-07-13 11:38:31,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 476. [2022-07-13 11:38:31,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 1.5410526315789475) internal successors, (732), 475 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:31,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 732 transitions. [2022-07-13 11:38:31,930 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 732 transitions. Word has length 142 [2022-07-13 11:38:31,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:31,931 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 732 transitions. [2022-07-13 11:38:31,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:31,931 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 732 transitions. [2022-07-13 11:38:31,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-13 11:38:31,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:31,933 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 11:38:31,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 11:38:31,933 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:31,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:31,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1261572010, now seen corresponding path program 1 times [2022-07-13 11:38:31,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:31,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446490934] [2022-07-13 11:38:31,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:31,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:32,052 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-13 11:38:32,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:32,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446490934] [2022-07-13 11:38:32,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446490934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:32,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:32,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:32,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543730883] [2022-07-13 11:38:32,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:32,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:32,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:32,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:32,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:32,054 INFO L87 Difference]: Start difference. First operand 476 states and 732 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:32,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:32,628 INFO L93 Difference]: Finished difference Result 1008 states and 1554 transitions. [2022-07-13 11:38:32,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:32,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 143 [2022-07-13 11:38:32,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:32,631 INFO L225 Difference]: With dead ends: 1008 [2022-07-13 11:38:32,631 INFO L226 Difference]: Without dead ends: 553 [2022-07-13 11:38:32,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:32,632 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 137 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:32,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 424 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:38:32,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-13 11:38:32,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 476. [2022-07-13 11:38:32,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 1.528421052631579) internal successors, (726), 475 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:32,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 726 transitions. [2022-07-13 11:38:32,642 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 726 transitions. Word has length 143 [2022-07-13 11:38:32,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:32,643 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 726 transitions. [2022-07-13 11:38:32,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:32,643 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 726 transitions. [2022-07-13 11:38:32,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 11:38:32,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:32,645 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:32,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 11:38:32,645 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:32,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:32,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1455297220, now seen corresponding path program 1 times [2022-07-13 11:38:32,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:32,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315938370] [2022-07-13 11:38:32,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:32,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:32,763 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-13 11:38:32,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:32,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315938370] [2022-07-13 11:38:32,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315938370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:32,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:32,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:32,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383375813] [2022-07-13 11:38:32,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:32,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:32,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:32,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:32,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:32,766 INFO L87 Difference]: Start difference. First operand 476 states and 726 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:33,887 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:34,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:34,119 INFO L93 Difference]: Finished difference Result 963 states and 1474 transitions. [2022-07-13 11:38:34,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:34,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 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 144 [2022-07-13 11:38:34,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:34,121 INFO L225 Difference]: With dead ends: 963 [2022-07-13 11:38:34,121 INFO L226 Difference]: Without dead ends: 508 [2022-07-13 11:38:34,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:34,122 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 73 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:34,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 575 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 11:38:34,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-07-13 11:38:34,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 476. [2022-07-13 11:38:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 1.5263157894736843) internal successors, (725), 475 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 725 transitions. [2022-07-13 11:38:34,132 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 725 transitions. Word has length 144 [2022-07-13 11:38:34,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:34,133 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 725 transitions. [2022-07-13 11:38:34,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,133 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 725 transitions. [2022-07-13 11:38:34,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 11:38:34,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:34,134 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:34,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 11:38:34,135 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:34,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:34,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1532527678, now seen corresponding path program 1 times [2022-07-13 11:38:34,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:34,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660165915] [2022-07-13 11:38:34,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:34,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 11:38:34,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:34,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660165915] [2022-07-13 11:38:34,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660165915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:34,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:34,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:34,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356020096] [2022-07-13 11:38:34,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:34,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:34,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:34,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:34,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:34,253 INFO L87 Difference]: Start difference. First operand 476 states and 725 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:34,337 INFO L93 Difference]: Finished difference Result 1383 states and 2123 transitions. [2022-07-13 11:38:34,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:34,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 144 [2022-07-13 11:38:34,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:34,341 INFO L225 Difference]: With dead ends: 1383 [2022-07-13 11:38:34,341 INFO L226 Difference]: Without dead ends: 928 [2022-07-13 11:38:34,342 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:34,346 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 154 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:34,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 446 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:34,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2022-07-13 11:38:34,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 928. [2022-07-13 11:38:34,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 927 states have (on average 1.5113268608414239) internal successors, (1401), 927 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1401 transitions. [2022-07-13 11:38:34,364 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1401 transitions. Word has length 144 [2022-07-13 11:38:34,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:34,365 INFO L495 AbstractCegarLoop]: Abstraction has 928 states and 1401 transitions. [2022-07-13 11:38:34,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,365 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1401 transitions. [2022-07-13 11:38:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 11:38:34,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:34,367 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:34,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 11:38:34,367 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:34,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:34,368 INFO L85 PathProgramCache]: Analyzing trace with hash -500866368, now seen corresponding path program 1 times [2022-07-13 11:38:34,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:34,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075102106] [2022-07-13 11:38:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:34,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-13 11:38:34,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:34,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075102106] [2022-07-13 11:38:34,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075102106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:34,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:34,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:34,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438152198] [2022-07-13 11:38:34,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:34,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:34,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:34,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:34,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:34,458 INFO L87 Difference]: Start difference. First operand 928 states and 1401 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:34,531 INFO L93 Difference]: Finished difference Result 1862 states and 2814 transitions. [2022-07-13 11:38:34,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:34,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-07-13 11:38:34,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:34,535 INFO L225 Difference]: With dead ends: 1862 [2022-07-13 11:38:34,535 INFO L226 Difference]: Without dead ends: 955 [2022-07-13 11:38:34,536 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:34,536 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:34,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 434 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:34,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2022-07-13 11:38:34,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 955. [2022-07-13 11:38:34,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 954 states have (on average 1.5052410901467506) internal successors, (1436), 954 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1436 transitions. [2022-07-13 11:38:34,567 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1436 transitions. Word has length 144 [2022-07-13 11:38:34,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:34,567 INFO L495 AbstractCegarLoop]: Abstraction has 955 states and 1436 transitions. [2022-07-13 11:38:34,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,568 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1436 transitions. [2022-07-13 11:38:34,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 11:38:34,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:34,570 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:34,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 11:38:34,570 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:34,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:34,571 INFO L85 PathProgramCache]: Analyzing trace with hash 360967234, now seen corresponding path program 1 times [2022-07-13 11:38:34,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:34,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386910691] [2022-07-13 11:38:34,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:34,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-13 11:38:34,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:34,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386910691] [2022-07-13 11:38:34,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386910691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:34,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:34,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:34,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226764323] [2022-07-13 11:38:34,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:34,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:34,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:34,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:34,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:34,659 INFO L87 Difference]: Start difference. First operand 955 states and 1436 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:34,700 INFO L93 Difference]: Finished difference Result 1891 states and 2850 transitions. [2022-07-13 11:38:34,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:34,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-07-13 11:38:34,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:34,704 INFO L225 Difference]: With dead ends: 1891 [2022-07-13 11:38:34,704 INFO L226 Difference]: Without dead ends: 957 [2022-07-13 11:38:34,705 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:34,706 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:34,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 413 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:38:34,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-07-13 11:38:34,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 957. [2022-07-13 11:38:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 1.50418410041841) internal successors, (1438), 956 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1438 transitions. [2022-07-13 11:38:34,724 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1438 transitions. Word has length 144 [2022-07-13 11:38:34,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:34,725 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1438 transitions. [2022-07-13 11:38:34,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,725 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1438 transitions. [2022-07-13 11:38:34,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 11:38:34,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:34,727 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:34,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-13 11:38:34,728 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:34,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:34,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1469229848, now seen corresponding path program 1 times [2022-07-13 11:38:34,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:34,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794496009] [2022-07-13 11:38:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:34,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 11:38:34,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:34,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794496009] [2022-07-13 11:38:34,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794496009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:34,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:34,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:34,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441976433] [2022-07-13 11:38:34,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:34,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:34,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:34,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:34,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:34,849 INFO L87 Difference]: Start difference. First operand 957 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:34,923 INFO L93 Difference]: Finished difference Result 2343 states and 3547 transitions. [2022-07-13 11:38:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:34,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-07-13 11:38:34,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:34,928 INFO L225 Difference]: With dead ends: 2343 [2022-07-13 11:38:34,928 INFO L226 Difference]: Without dead ends: 1409 [2022-07-13 11:38:34,932 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:34,932 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 159 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:34,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 594 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:34,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2022-07-13 11:38:34,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1409. [2022-07-13 11:38:34,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1408 states have (on average 1.5014204545454546) internal successors, (2114), 1408 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 2114 transitions. [2022-07-13 11:38:34,961 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 2114 transitions. Word has length 146 [2022-07-13 11:38:34,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:34,961 INFO L495 AbstractCegarLoop]: Abstraction has 1409 states and 2114 transitions. [2022-07-13 11:38:34,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 2114 transitions. [2022-07-13 11:38:34,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-13 11:38:34,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:34,964 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:34,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 11:38:34,965 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:34,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:34,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1434763751, now seen corresponding path program 1 times [2022-07-13 11:38:34,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:34,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800142877] [2022-07-13 11:38:34,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:34,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-13 11:38:35,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:35,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800142877] [2022-07-13 11:38:35,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800142877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:35,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:35,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:35,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026632811] [2022-07-13 11:38:35,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:35,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:35,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:35,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:35,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:35,095 INFO L87 Difference]: Start difference. First operand 1409 states and 2114 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:36,828 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:37,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:37,079 INFO L93 Difference]: Finished difference Result 2948 states and 4429 transitions. [2022-07-13 11:38:37,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:37,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 175 [2022-07-13 11:38:37,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:37,084 INFO L225 Difference]: With dead ends: 2948 [2022-07-13 11:38:37,084 INFO L226 Difference]: Without dead ends: 1562 [2022-07-13 11:38:37,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:37,086 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 42 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:37,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 665 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 11:38:37,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-07-13 11:38:37,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1493. [2022-07-13 11:38:37,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1492 states have (on average 1.5033512064343164) internal successors, (2243), 1492 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:37,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2243 transitions. [2022-07-13 11:38:37,115 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2243 transitions. Word has length 175 [2022-07-13 11:38:37,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:37,115 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 2243 transitions. [2022-07-13 11:38:37,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:37,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2243 transitions. [2022-07-13 11:38:37,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 11:38:37,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:37,119 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:37,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 11:38:37,119 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:37,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:37,120 INFO L85 PathProgramCache]: Analyzing trace with hash -866603135, now seen corresponding path program 1 times [2022-07-13 11:38:37,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:37,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855825480] [2022-07-13 11:38:37,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:37,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-13 11:38:37,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:37,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855825480] [2022-07-13 11:38:37,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855825480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:37,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:37,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:37,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426269474] [2022-07-13 11:38:37,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:37,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:37,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:37,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:37,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:37,271 INFO L87 Difference]: Start difference. First operand 1493 states and 2243 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:37,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:37,826 INFO L93 Difference]: Finished difference Result 3186 states and 4762 transitions. [2022-07-13 11:38:37,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:37,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2022-07-13 11:38:37,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:37,832 INFO L225 Difference]: With dead ends: 3186 [2022-07-13 11:38:37,832 INFO L226 Difference]: Without dead ends: 1716 [2022-07-13 11:38:37,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:37,834 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 149 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:37,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 426 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:38:37,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2022-07-13 11:38:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1493. [2022-07-13 11:38:37,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1492 states have (on average 1.4892761394101877) internal successors, (2222), 1492 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:37,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2222 transitions. [2022-07-13 11:38:37,865 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2222 transitions. Word has length 189 [2022-07-13 11:38:37,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:37,865 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 2222 transitions. [2022-07-13 11:38:37,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:37,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2222 transitions. [2022-07-13 11:38:37,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-13 11:38:37,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:37,868 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:37,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 11:38:37,869 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:37,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:37,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1420236190, now seen corresponding path program 1 times [2022-07-13 11:38:37,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:37,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274328119] [2022-07-13 11:38:37,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:37,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:38,025 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 252 proven. 38 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-13 11:38:38,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:38,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274328119] [2022-07-13 11:38:38,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274328119] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:38:38,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661667295] [2022-07-13 11:38:38,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:38,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:38:38,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:38:38,035 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) [2022-07-13 11:38:38,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 11:38:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:38,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 1186 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:38:38,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:38:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-13 11:38:38,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:38:38,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661667295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:38,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:38:38,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-13 11:38:38,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381909838] [2022-07-13 11:38:38,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:38,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:38,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:38,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:38,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:38:38,981 INFO L87 Difference]: Start difference. First operand 1493 states and 2222 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:39,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:39,085 INFO L93 Difference]: Finished difference Result 3444 states and 5152 transitions. [2022-07-13 11:38:39,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:39,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 197 [2022-07-13 11:38:39,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:39,092 INFO L225 Difference]: With dead ends: 3444 [2022-07-13 11:38:39,093 INFO L226 Difference]: Without dead ends: 1974 [2022-07-13 11:38:39,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:38:39,095 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 166 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:39,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 387 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:39,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2022-07-13 11:38:39,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1974. [2022-07-13 11:38:39,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1973 states have (on average 1.490116573745565) internal successors, (2940), 1973 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:39,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 2940 transitions. [2022-07-13 11:38:39,135 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 2940 transitions. Word has length 197 [2022-07-13 11:38:39,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:39,135 INFO L495 AbstractCegarLoop]: Abstraction has 1974 states and 2940 transitions. [2022-07-13 11:38:39,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:39,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 2940 transitions. [2022-07-13 11:38:39,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-13 11:38:39,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:39,140 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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] [2022-07-13 11:38:39,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 11:38:39,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-13 11:38:39,356 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:39,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:39,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2107016587, now seen corresponding path program 1 times [2022-07-13 11:38:39,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:39,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156906073] [2022-07-13 11:38:39,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:39,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:39,533 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-07-13 11:38:39,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:39,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156906073] [2022-07-13 11:38:39,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156906073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:39,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:39,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:39,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264020835] [2022-07-13 11:38:39,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:39,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:39,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:39,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:39,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:39,536 INFO L87 Difference]: Start difference. First operand 1974 states and 2940 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:39,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:39,639 INFO L93 Difference]: Finished difference Result 4406 states and 6588 transitions. [2022-07-13 11:38:39,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:39,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2022-07-13 11:38:39,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:39,648 INFO L225 Difference]: With dead ends: 4406 [2022-07-13 11:38:39,648 INFO L226 Difference]: Without dead ends: 2455 [2022-07-13 11:38:39,650 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:39,650 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 163 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:39,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 386 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:39,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2022-07-13 11:38:39,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2455. [2022-07-13 11:38:39,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2454 states have (on average 1.4910350448247758) internal successors, (3659), 2454 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:39,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3659 transitions. [2022-07-13 11:38:39,702 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3659 transitions. Word has length 199 [2022-07-13 11:38:39,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:39,703 INFO L495 AbstractCegarLoop]: Abstraction has 2455 states and 3659 transitions. [2022-07-13 11:38:39,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:39,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3659 transitions. [2022-07-13 11:38:39,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-13 11:38:39,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:39,708 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-13 11:38:39,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-13 11:38:39,709 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:39,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:39,709 INFO L85 PathProgramCache]: Analyzing trace with hash 447893990, now seen corresponding path program 1 times [2022-07-13 11:38:39,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:39,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712524215] [2022-07-13 11:38:39,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:39,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:39,878 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-13 11:38:39,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:39,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712524215] [2022-07-13 11:38:39,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712524215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:39,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:39,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:39,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013090092] [2022-07-13 11:38:39,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:39,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:39,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:39,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:39,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:39,880 INFO L87 Difference]: Start difference. First operand 2455 states and 3659 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:39,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:39,989 INFO L93 Difference]: Finished difference Result 5368 states and 8026 transitions. [2022-07-13 11:38:39,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:39,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 238 [2022-07-13 11:38:39,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:40,014 INFO L225 Difference]: With dead ends: 5368 [2022-07-13 11:38:40,015 INFO L226 Difference]: Without dead ends: 2936 [2022-07-13 11:38:40,018 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:40,019 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 170 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:40,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 385 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:40,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2022-07-13 11:38:40,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 2936. [2022-07-13 11:38:40,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2935 states have (on average 1.4919931856899489) internal successors, (4379), 2935 states have internal predecessors, (4379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:40,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 4379 transitions. [2022-07-13 11:38:40,081 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 4379 transitions. Word has length 238 [2022-07-13 11:38:40,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:40,082 INFO L495 AbstractCegarLoop]: Abstraction has 2936 states and 4379 transitions. [2022-07-13 11:38:40,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:40,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 4379 transitions. [2022-07-13 11:38:40,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-13 11:38:40,088 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:40,088 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-13 11:38:40,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-13 11:38:40,089 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:40,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:40,092 INFO L85 PathProgramCache]: Analyzing trace with hash 230867452, now seen corresponding path program 1 times [2022-07-13 11:38:40,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:40,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232477920] [2022-07-13 11:38:40,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:40,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-13 11:38:40,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:40,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232477920] [2022-07-13 11:38:40,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232477920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:40,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:40,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:40,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414088573] [2022-07-13 11:38:40,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:40,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:40,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:40,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:40,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:40,247 INFO L87 Difference]: Start difference. First operand 2936 states and 4379 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:40,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:40,353 INFO L93 Difference]: Finished difference Result 6330 states and 9466 transitions. [2022-07-13 11:38:40,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:40,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 240 [2022-07-13 11:38:40,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:40,360 INFO L225 Difference]: With dead ends: 6330 [2022-07-13 11:38:40,360 INFO L226 Difference]: Without dead ends: 3417 [2022-07-13 11:38:40,363 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:40,364 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 171 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:40,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 384 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:40,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2022-07-13 11:38:40,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 3417. [2022-07-13 11:38:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3417 states, 3416 states have (on average 1.4929742388758782) internal successors, (5100), 3416 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 5100 transitions. [2022-07-13 11:38:40,449 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 5100 transitions. Word has length 240 [2022-07-13 11:38:40,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:40,449 INFO L495 AbstractCegarLoop]: Abstraction has 3417 states and 5100 transitions. [2022-07-13 11:38:40,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:40,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 5100 transitions. [2022-07-13 11:38:40,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-07-13 11:38:40,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:40,457 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-13 11:38:40,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-13 11:38:40,457 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:40,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:40,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1840467843, now seen corresponding path program 1 times [2022-07-13 11:38:40,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:40,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164726338] [2022-07-13 11:38:40,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:40,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:40,656 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-07-13 11:38:40,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:40,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164726338] [2022-07-13 11:38:40,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164726338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:40,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:40,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:40,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372919641] [2022-07-13 11:38:40,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:40,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:40,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:40,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:40,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:40,659 INFO L87 Difference]: Start difference. First operand 3417 states and 5100 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:40,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:40,772 INFO L93 Difference]: Finished difference Result 7284 states and 10895 transitions. [2022-07-13 11:38:40,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:40,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 272 [2022-07-13 11:38:40,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:40,779 INFO L225 Difference]: With dead ends: 7284 [2022-07-13 11:38:40,780 INFO L226 Difference]: Without dead ends: 3890 [2022-07-13 11:38:40,783 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:40,784 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 152 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:40,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 593 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:40,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2022-07-13 11:38:40,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 3890. [2022-07-13 11:38:40,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3890 states, 3889 states have (on average 1.4924145024427873) internal successors, (5804), 3889 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:40,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3890 states to 3890 states and 5804 transitions. [2022-07-13 11:38:40,856 INFO L78 Accepts]: Start accepts. Automaton has 3890 states and 5804 transitions. Word has length 272 [2022-07-13 11:38:40,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:40,856 INFO L495 AbstractCegarLoop]: Abstraction has 3890 states and 5804 transitions. [2022-07-13 11:38:40,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:40,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3890 states and 5804 transitions. [2022-07-13 11:38:40,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-07-13 11:38:40,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:40,863 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-13 11:38:40,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-13 11:38:40,864 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:40,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:40,864 INFO L85 PathProgramCache]: Analyzing trace with hash 943074565, now seen corresponding path program 1 times [2022-07-13 11:38:40,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:40,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594861056] [2022-07-13 11:38:40,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:40,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:41,041 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-13 11:38:41,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:41,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594861056] [2022-07-13 11:38:41,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594861056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:41,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:41,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:41,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481901359] [2022-07-13 11:38:41,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:41,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:41,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:41,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:41,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:41,043 INFO L87 Difference]: Start difference. First operand 3890 states and 5804 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:41,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:41,168 INFO L93 Difference]: Finished difference Result 8205 states and 12267 transitions. [2022-07-13 11:38:41,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:41,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 272 [2022-07-13 11:38:41,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:41,176 INFO L225 Difference]: With dead ends: 8205 [2022-07-13 11:38:41,176 INFO L226 Difference]: Without dead ends: 4338 [2022-07-13 11:38:41,180 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:41,181 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 161 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:41,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 596 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:41,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4338 states. [2022-07-13 11:38:41,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4338 to 4338. [2022-07-13 11:38:41,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4337 states have (on average 1.4913534701406501) internal successors, (6468), 4337 states have internal predecessors, (6468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:41,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 6468 transitions. [2022-07-13 11:38:41,279 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 6468 transitions. Word has length 272 [2022-07-13 11:38:41,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:41,279 INFO L495 AbstractCegarLoop]: Abstraction has 4338 states and 6468 transitions. [2022-07-13 11:38:41,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:41,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 6468 transitions. [2022-07-13 11:38:41,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-07-13 11:38:41,288 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:41,288 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 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] [2022-07-13 11:38:41,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-13 11:38:41,289 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:41,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:41,289 INFO L85 PathProgramCache]: Analyzing trace with hash 727620858, now seen corresponding path program 1 times [2022-07-13 11:38:41,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:41,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256280715] [2022-07-13 11:38:41,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:41,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:41,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2022-07-13 11:38:41,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:41,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256280715] [2022-07-13 11:38:41,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256280715] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:41,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:41,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:41,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513945155] [2022-07-13 11:38:41,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:41,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:41,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:41,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:41,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:41,511 INFO L87 Difference]: Start difference. First operand 4338 states and 6468 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:41,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:41,636 INFO L93 Difference]: Finished difference Result 9134 states and 13644 transitions. [2022-07-13 11:38:41,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:41,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 347 [2022-07-13 11:38:41,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:41,645 INFO L225 Difference]: With dead ends: 9134 [2022-07-13 11:38:41,646 INFO L226 Difference]: Without dead ends: 4819 [2022-07-13 11:38:41,651 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:41,651 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 160 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:41,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 381 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:41,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4819 states. [2022-07-13 11:38:41,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4819 to 4819. [2022-07-13 11:38:41,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4819 states, 4818 states have (on average 1.4927355749273556) internal successors, (7192), 4818 states have internal predecessors, (7192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:41,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4819 states to 4819 states and 7192 transitions. [2022-07-13 11:38:41,780 INFO L78 Accepts]: Start accepts. Automaton has 4819 states and 7192 transitions. Word has length 347 [2022-07-13 11:38:41,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:41,780 INFO L495 AbstractCegarLoop]: Abstraction has 4819 states and 7192 transitions. [2022-07-13 11:38:41,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:41,781 INFO L276 IsEmpty]: Start isEmpty. Operand 4819 states and 7192 transitions. [2022-07-13 11:38:41,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-07-13 11:38:41,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:41,791 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 3, 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] [2022-07-13 11:38:41,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-13 11:38:41,792 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:41,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:41,793 INFO L85 PathProgramCache]: Analyzing trace with hash 54456075, now seen corresponding path program 1 times [2022-07-13 11:38:41,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:41,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118227492] [2022-07-13 11:38:41,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:41,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1443 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2022-07-13 11:38:42,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:42,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118227492] [2022-07-13 11:38:42,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118227492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:42,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:42,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:42,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626423226] [2022-07-13 11:38:42,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:42,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:42,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:42,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:42,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:42,039 INFO L87 Difference]: Start difference. First operand 4819 states and 7192 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:42,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:42,217 INFO L93 Difference]: Finished difference Result 10096 states and 15092 transitions. [2022-07-13 11:38:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:42,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 388 [2022-07-13 11:38:42,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:42,226 INFO L225 Difference]: With dead ends: 10096 [2022-07-13 11:38:42,227 INFO L226 Difference]: Without dead ends: 5300 [2022-07-13 11:38:42,231 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:42,239 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 161 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:42,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 380 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:42,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5300 states. [2022-07-13 11:38:42,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5300 to 5300. [2022-07-13 11:38:42,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 5299 states have (on average 1.4940554821664465) internal successors, (7917), 5299 states have internal predecessors, (7917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 7917 transitions. [2022-07-13 11:38:42,336 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 7917 transitions. Word has length 388 [2022-07-13 11:38:42,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:42,336 INFO L495 AbstractCegarLoop]: Abstraction has 5300 states and 7917 transitions. [2022-07-13 11:38:42,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:42,337 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 7917 transitions. [2022-07-13 11:38:42,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2022-07-13 11:38:42,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:42,346 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:42,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-13 11:38:42,346 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:42,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:42,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1652971603, now seen corresponding path program 1 times [2022-07-13 11:38:42,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:42,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162164141] [2022-07-13 11:38:42,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:42,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:42,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 1160 trivial. 0 not checked. [2022-07-13 11:38:42,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:42,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162164141] [2022-07-13 11:38:42,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162164141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:42,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:42,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:42,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705278963] [2022-07-13 11:38:42,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:42,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:42,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:42,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:42,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:42,572 INFO L87 Difference]: Start difference. First operand 5300 states and 7917 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:42,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:42,716 INFO L93 Difference]: Finished difference Result 11051 states and 16531 transitions. [2022-07-13 11:38:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:42,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 395 [2022-07-13 11:38:42,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:42,728 INFO L225 Difference]: With dead ends: 11051 [2022-07-13 11:38:42,728 INFO L226 Difference]: Without dead ends: 5774 [2022-07-13 11:38:42,734 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:42,735 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 150 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:42,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 593 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:42,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5774 states. [2022-07-13 11:38:42,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5774 to 5774. [2022-07-13 11:38:42,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5774 states, 5773 states have (on average 1.4935042438939892) internal successors, (8622), 5773 states have internal predecessors, (8622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:42,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5774 states to 5774 states and 8622 transitions. [2022-07-13 11:38:42,836 INFO L78 Accepts]: Start accepts. Automaton has 5774 states and 8622 transitions. Word has length 395 [2022-07-13 11:38:42,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:42,837 INFO L495 AbstractCegarLoop]: Abstraction has 5774 states and 8622 transitions. [2022-07-13 11:38:42,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:42,837 INFO L276 IsEmpty]: Start isEmpty. Operand 5774 states and 8622 transitions. [2022-07-13 11:38:42,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2022-07-13 11:38:42,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:42,847 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 5, 3, 3, 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] [2022-07-13 11:38:42,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-13 11:38:42,848 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:42,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:42,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1960737092, now seen corresponding path program 1 times [2022-07-13 11:38:42,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:42,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821855237] [2022-07-13 11:38:42,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:42,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:43,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2119 backedges. 641 proven. 0 refuted. 0 times theorem prover too weak. 1478 trivial. 0 not checked. [2022-07-13 11:38:43,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:43,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821855237] [2022-07-13 11:38:43,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821855237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:43,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:43,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:43,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164738616] [2022-07-13 11:38:43,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:43,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:43,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:43,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:43,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:43,150 INFO L87 Difference]: Start difference. First operand 5774 states and 8622 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:43,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:43,295 INFO L93 Difference]: Finished difference Result 12006 states and 17952 transitions. [2022-07-13 11:38:43,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:43,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 471 [2022-07-13 11:38:43,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:43,307 INFO L225 Difference]: With dead ends: 12006 [2022-07-13 11:38:43,307 INFO L226 Difference]: Without dead ends: 6255 [2022-07-13 11:38:43,313 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:43,314 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 160 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:43,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 378 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:43,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6255 states. [2022-07-13 11:38:43,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6255 to 6255. [2022-07-13 11:38:43,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6255 states, 6254 states have (on average 1.4948832747041894) internal successors, (9349), 6254 states have internal predecessors, (9349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6255 states to 6255 states and 9349 transitions. [2022-07-13 11:38:43,483 INFO L78 Accepts]: Start accepts. Automaton has 6255 states and 9349 transitions. Word has length 471 [2022-07-13 11:38:43,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:43,484 INFO L495 AbstractCegarLoop]: Abstraction has 6255 states and 9349 transitions. [2022-07-13 11:38:43,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:43,485 INFO L276 IsEmpty]: Start isEmpty. Operand 6255 states and 9349 transitions. [2022-07-13 11:38:43,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2022-07-13 11:38:43,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:43,498 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:43,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-13 11:38:43,499 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:43,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:43,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1847595616, now seen corresponding path program 1 times [2022-07-13 11:38:43,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:43,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93934798] [2022-07-13 11:38:43,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:43,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 744 proven. 7 refuted. 0 times theorem prover too weak. 1761 trivial. 0 not checked. [2022-07-13 11:38:43,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:43,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93934798] [2022-07-13 11:38:43,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93934798] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:38:43,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892004822] [2022-07-13 11:38:43,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:43,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:38:43,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:38:43,793 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) [2022-07-13 11:38:43,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 11:38:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:44,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 2355 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:38:44,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:38:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 707 proven. 0 refuted. 0 times theorem prover too weak. 1805 trivial. 0 not checked. [2022-07-13 11:38:44,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:38:44,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892004822] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:44,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:38:44,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-13 11:38:44,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844281916] [2022-07-13 11:38:44,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:44,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:44,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:44,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:44,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:38:44,918 INFO L87 Difference]: Start difference. First operand 6255 states and 9349 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:45,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:45,091 INFO L93 Difference]: Finished difference Result 12968 states and 19406 transitions. [2022-07-13 11:38:45,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:45,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 513 [2022-07-13 11:38:45,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:45,104 INFO L225 Difference]: With dead ends: 12968 [2022-07-13 11:38:45,105 INFO L226 Difference]: Without dead ends: 6736 [2022-07-13 11:38:45,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:38:45,113 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 161 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:45,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 377 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:45,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6736 states. [2022-07-13 11:38:45,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6736 to 6736. [2022-07-13 11:38:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6736 states, 6735 states have (on average 1.4962138084632517) internal successors, (10077), 6735 states have internal predecessors, (10077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6736 states to 6736 states and 10077 transitions. [2022-07-13 11:38:45,271 INFO L78 Accepts]: Start accepts. Automaton has 6736 states and 10077 transitions. Word has length 513 [2022-07-13 11:38:45,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:45,271 INFO L495 AbstractCegarLoop]: Abstraction has 6736 states and 10077 transitions. [2022-07-13 11:38:45,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:45,272 INFO L276 IsEmpty]: Start isEmpty. Operand 6736 states and 10077 transitions. [2022-07-13 11:38:45,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-07-13 11:38:45,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:45,285 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:45,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 11:38:45,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-07-13 11:38:45,504 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:45,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:45,504 INFO L85 PathProgramCache]: Analyzing trace with hash -138901474, now seen corresponding path program 1 times [2022-07-13 11:38:45,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:45,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691944420] [2022-07-13 11:38:45,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:45,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 1473 proven. 0 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2022-07-13 11:38:45,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:45,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691944420] [2022-07-13 11:38:45,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691944420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:45,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:45,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:45,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516616294] [2022-07-13 11:38:45,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:45,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:45,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:45,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:45,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:45,778 INFO L87 Difference]: Start difference. First operand 6736 states and 10077 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:46,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:46,560 INFO L93 Difference]: Finished difference Result 14638 states and 21839 transitions. [2022-07-13 11:38:46,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:46,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 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 521 [2022-07-13 11:38:46,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:46,577 INFO L225 Difference]: With dead ends: 14638 [2022-07-13 11:38:46,578 INFO L226 Difference]: Without dead ends: 7925 [2022-07-13 11:38:46,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:46,587 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 75 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:46,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 725 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:38:46,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7925 states. [2022-07-13 11:38:46,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7925 to 7310. [2022-07-13 11:38:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7310 states, 7309 states have (on average 1.49746887399097) internal successors, (10945), 7309 states have internal predecessors, (10945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7310 states to 7310 states and 10945 transitions. [2022-07-13 11:38:46,733 INFO L78 Accepts]: Start accepts. Automaton has 7310 states and 10945 transitions. Word has length 521 [2022-07-13 11:38:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:46,734 INFO L495 AbstractCegarLoop]: Abstraction has 7310 states and 10945 transitions. [2022-07-13 11:38:46,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:46,734 INFO L276 IsEmpty]: Start isEmpty. Operand 7310 states and 10945 transitions. [2022-07-13 11:38:46,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-07-13 11:38:46,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:46,745 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:46,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-13 11:38:46,746 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:46,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:46,746 INFO L85 PathProgramCache]: Analyzing trace with hash -930711262, now seen corresponding path program 1 times [2022-07-13 11:38:46,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:46,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662478800] [2022-07-13 11:38:46,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:46,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 2135 trivial. 0 not checked. [2022-07-13 11:38:46,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:46,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662478800] [2022-07-13 11:38:46,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662478800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:46,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:46,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:46,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183918899] [2022-07-13 11:38:46,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:46,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:46,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:46,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:46,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:46,990 INFO L87 Difference]: Start difference. First operand 7310 states and 10945 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:47,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:47,141 INFO L93 Difference]: Finished difference Result 15113 states and 22651 transitions. [2022-07-13 11:38:47,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:47,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 521 [2022-07-13 11:38:47,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:47,155 INFO L225 Difference]: With dead ends: 15113 [2022-07-13 11:38:47,155 INFO L226 Difference]: Without dead ends: 7826 [2022-07-13 11:38:47,163 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:47,164 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 150 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:47,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 593 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:47,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7826 states. [2022-07-13 11:38:47,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7826 to 7826. [2022-07-13 11:38:47,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7826 states, 7825 states have (on average 1.4968690095846646) internal successors, (11713), 7825 states have internal predecessors, (11713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:47,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7826 states to 7826 states and 11713 transitions. [2022-07-13 11:38:47,350 INFO L78 Accepts]: Start accepts. Automaton has 7826 states and 11713 transitions. Word has length 521 [2022-07-13 11:38:47,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:47,351 INFO L495 AbstractCegarLoop]: Abstraction has 7826 states and 11713 transitions. [2022-07-13 11:38:47,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:47,351 INFO L276 IsEmpty]: Start isEmpty. Operand 7826 states and 11713 transitions. [2022-07-13 11:38:47,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2022-07-13 11:38:47,363 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:47,363 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 8, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:47,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-13 11:38:47,364 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:47,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:47,364 INFO L85 PathProgramCache]: Analyzing trace with hash -296644096, now seen corresponding path program 1 times [2022-07-13 11:38:47,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:47,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195581415] [2022-07-13 11:38:47,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:47,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:47,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3410 backedges. 849 proven. 0 refuted. 0 times theorem prover too weak. 2561 trivial. 0 not checked. [2022-07-13 11:38:47,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:47,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195581415] [2022-07-13 11:38:47,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195581415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:47,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:47,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:47,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805549622] [2022-07-13 11:38:47,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:47,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:47,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:47,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:47,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:47,658 INFO L87 Difference]: Start difference. First operand 7826 states and 11713 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:47,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:47,799 INFO L93 Difference]: Finished difference Result 16151 states and 24196 transitions. [2022-07-13 11:38:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:47,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 598 [2022-07-13 11:38:47,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:47,811 INFO L225 Difference]: With dead ends: 16151 [2022-07-13 11:38:47,812 INFO L226 Difference]: Without dead ends: 8348 [2022-07-13 11:38:47,818 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:47,819 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 160 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:47,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 375 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:47,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8348 states. [2022-07-13 11:38:47,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8348 to 8348. [2022-07-13 11:38:47,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8348 states, 8347 states have (on average 1.498143045405535) internal successors, (12505), 8347 states have internal predecessors, (12505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:47,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8348 states to 8348 states and 12505 transitions. [2022-07-13 11:38:47,974 INFO L78 Accepts]: Start accepts. Automaton has 8348 states and 12505 transitions. Word has length 598 [2022-07-13 11:38:47,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:47,975 INFO L495 AbstractCegarLoop]: Abstraction has 8348 states and 12505 transitions. [2022-07-13 11:38:47,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:47,976 INFO L276 IsEmpty]: Start isEmpty. Operand 8348 states and 12505 transitions. [2022-07-13 11:38:47,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2022-07-13 11:38:47,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:47,988 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 9, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:47,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-13 11:38:47,988 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:47,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:47,989 INFO L85 PathProgramCache]: Analyzing trace with hash -764735426, now seen corresponding path program 1 times [2022-07-13 11:38:47,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:47,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316155883] [2022-07-13 11:38:47,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:47,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3915 backedges. 914 proven. 0 refuted. 0 times theorem prover too weak. 3001 trivial. 0 not checked. [2022-07-13 11:38:48,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:48,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316155883] [2022-07-13 11:38:48,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316155883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:48,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:48,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:48,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661254231] [2022-07-13 11:38:48,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:48,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:48,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:48,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:48,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:48,335 INFO L87 Difference]: Start difference. First operand 8348 states and 12505 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:48,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:48,523 INFO L93 Difference]: Finished difference Result 17195 states and 25780 transitions. [2022-07-13 11:38:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:48,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 641 [2022-07-13 11:38:48,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:48,535 INFO L225 Difference]: With dead ends: 17195 [2022-07-13 11:38:48,536 INFO L226 Difference]: Without dead ends: 8870 [2022-07-13 11:38:48,544 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:48,545 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 161 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:48,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 374 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:48,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8870 states. [2022-07-13 11:38:48,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8870 to 8870. [2022-07-13 11:38:48,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8870 states, 8869 states have (on average 1.4993798624422146) internal successors, (13298), 8869 states have internal predecessors, (13298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:48,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8870 states to 8870 states and 13298 transitions. [2022-07-13 11:38:48,681 INFO L78 Accepts]: Start accepts. Automaton has 8870 states and 13298 transitions. Word has length 641 [2022-07-13 11:38:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:48,682 INFO L495 AbstractCegarLoop]: Abstraction has 8870 states and 13298 transitions. [2022-07-13 11:38:48,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:48,683 INFO L276 IsEmpty]: Start isEmpty. Operand 8870 states and 13298 transitions. [2022-07-13 11:38:48,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2022-07-13 11:38:48,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:48,696 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 11:38:48,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-13 11:38:48,697 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:48,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:48,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1181033531, now seen corresponding path program 1 times [2022-07-13 11:38:48,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:48,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461070844] [2022-07-13 11:38:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:48,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-07-13 11:38:49,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:49,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461070844] [2022-07-13 11:38:49,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461070844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:49,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:49,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:49,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618497954] [2022-07-13 11:38:49,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:49,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:49,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:49,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:49,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:49,008 INFO L87 Difference]: Start difference. First operand 8870 states and 13298 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:49,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:49,216 INFO L93 Difference]: Finished difference Result 18234 states and 27359 transitions. [2022-07-13 11:38:49,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:49,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 650 [2022-07-13 11:38:49,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:49,225 INFO L225 Difference]: With dead ends: 18234 [2022-07-13 11:38:49,225 INFO L226 Difference]: Without dead ends: 9387 [2022-07-13 11:38:49,232 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:49,232 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 150 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:49,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 593 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:49,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9387 states. [2022-07-13 11:38:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9387 to 9387. [2022-07-13 11:38:49,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9387 states, 9386 states have (on average 1.4987215001065417) internal successors, (14067), 9386 states have internal predecessors, (14067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:49,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9387 states to 9387 states and 14067 transitions. [2022-07-13 11:38:49,447 INFO L78 Accepts]: Start accepts. Automaton has 9387 states and 14067 transitions. Word has length 650 [2022-07-13 11:38:49,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:49,448 INFO L495 AbstractCegarLoop]: Abstraction has 9387 states and 14067 transitions. [2022-07-13 11:38:49,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:49,448 INFO L276 IsEmpty]: Start isEmpty. Operand 9387 states and 14067 transitions. [2022-07-13 11:38:49,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2022-07-13 11:38:49,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:49,463 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 18, 18, 17, 17, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 11, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 11:38:49,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-13 11:38:49,463 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:49,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:49,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1426739437, now seen corresponding path program 1 times [2022-07-13 11:38:49,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:49,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941187015] [2022-07-13 11:38:49,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:49,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5037 backedges. 1058 proven. 0 refuted. 0 times theorem prover too weak. 3979 trivial. 0 not checked. [2022-07-13 11:38:49,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:49,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941187015] [2022-07-13 11:38:49,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941187015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:49,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:49,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:49,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330842179] [2022-07-13 11:38:49,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:49,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:49,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:49,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:49,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:49,844 INFO L87 Difference]: Start difference. First operand 9387 states and 14067 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:50,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:50,081 INFO L93 Difference]: Finished difference Result 19273 states and 28904 transitions. [2022-07-13 11:38:50,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:50,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 728 [2022-07-13 11:38:50,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:50,092 INFO L225 Difference]: With dead ends: 19273 [2022-07-13 11:38:50,092 INFO L226 Difference]: Without dead ends: 9909 [2022-07-13 11:38:50,100 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:50,101 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 160 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:50,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 372 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:50,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9909 states. [2022-07-13 11:38:50,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9909 to 9909. [2022-07-13 11:38:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9909 states, 9908 states have (on average 1.5) internal successors, (14862), 9908 states have internal predecessors, (14862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9909 states to 9909 states and 14862 transitions. [2022-07-13 11:38:50,332 INFO L78 Accepts]: Start accepts. Automaton has 9909 states and 14862 transitions. Word has length 728 [2022-07-13 11:38:50,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:50,333 INFO L495 AbstractCegarLoop]: Abstraction has 9909 states and 14862 transitions. [2022-07-13 11:38:50,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:50,333 INFO L276 IsEmpty]: Start isEmpty. Operand 9909 states and 14862 transitions. [2022-07-13 11:38:50,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2022-07-13 11:38:50,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:50,351 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 19, 19, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 12, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 11:38:50,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-13 11:38:50,351 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:50,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:50,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1609533332, now seen corresponding path program 1 times [2022-07-13 11:38:50,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:50,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239619505] [2022-07-13 11:38:50,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:50,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5655 backedges. 1122 proven. 0 refuted. 0 times theorem prover too weak. 4533 trivial. 0 not checked. [2022-07-13 11:38:50,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:50,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239619505] [2022-07-13 11:38:50,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239619505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:50,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:50,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:50,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965709349] [2022-07-13 11:38:50,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:50,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:50,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:50,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:50,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:50,772 INFO L87 Difference]: Start difference. First operand 9909 states and 14862 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:50,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:50,954 INFO L93 Difference]: Finished difference Result 10433 states and 15660 transitions. [2022-07-13 11:38:50,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:50,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 772 [2022-07-13 11:38:50,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:50,964 INFO L225 Difference]: With dead ends: 10433 [2022-07-13 11:38:50,964 INFO L226 Difference]: Without dead ends: 10431 [2022-07-13 11:38:50,967 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:38:50,967 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 161 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:50,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 371 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:38:50,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10431 states. [2022-07-13 11:38:51,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10431 to 10431. [2022-07-13 11:38:51,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10431 states, 10430 states have (on average 1.5012464046021092) internal successors, (15658), 10430 states have internal predecessors, (15658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10431 states to 10431 states and 15658 transitions. [2022-07-13 11:38:51,188 INFO L78 Accepts]: Start accepts. Automaton has 10431 states and 15658 transitions. Word has length 772 [2022-07-13 11:38:51,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:51,189 INFO L495 AbstractCegarLoop]: Abstraction has 10431 states and 15658 transitions. [2022-07-13 11:38:51,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:51,189 INFO L276 IsEmpty]: Start isEmpty. Operand 10431 states and 15658 transitions. [2022-07-13 11:38:51,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2022-07-13 11:38:51,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:51,203 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 19, 19, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-13 11:38:51,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-13 11:38:51,203 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:51,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:51,204 INFO L85 PathProgramCache]: Analyzing trace with hash -903556745, now seen corresponding path program 1 times [2022-07-13 11:38:51,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:51,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274688049] [2022-07-13 11:38:51,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:51,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 3657 proven. 480 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2022-07-13 11:38:52,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:52,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274688049] [2022-07-13 11:38:52,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274688049] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:38:52,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426264118] [2022-07-13 11:38:52,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:52,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:38:52,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:38:52,259 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:38:52,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 11:38:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:53,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 3304 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-13 11:38:53,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:38:53,667 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:38:53,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:38:53,756 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-07-13 11:38:53,756 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 10 [2022-07-13 11:38:53,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-13 11:38:53,826 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:38:53,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:38:53,899 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:38:53,900 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:38:53,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:38:53,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-07-13 11:38:53,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-07-13 11:38:53,984 INFO L356 Elim1Store]: treesize reduction 60, result has 39.4 percent of original size [2022-07-13 11:38:53,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 55 [2022-07-13 11:38:54,051 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-07-13 11:38:54,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 36 [2022-07-13 11:38:54,245 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:38:54,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 11 [2022-07-13 11:38:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 2342 proven. 586 refuted. 0 times theorem prover too weak. 2774 trivial. 0 not checked. [2022-07-13 11:38:54,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:38:54,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 53 [2022-07-13 11:38:54,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 41 [2022-07-13 11:38:58,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 88 [2022-07-13 11:38:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 2152 proven. 0 refuted. 0 times theorem prover too weak. 3550 trivial. 0 not checked. [2022-07-13 11:38:58,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426264118] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 11:38:58,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:38:58,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12, 13] total 25 [2022-07-13 11:38:58,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355974291] [2022-07-13 11:38:58,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:58,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 11:38:58,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:58,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 11:38:58,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=519, Unknown=1, NotChecked=0, Total=600 [2022-07-13 11:38:58,531 INFO L87 Difference]: Start difference. First operand 10431 states and 15658 transitions. Second operand has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:00,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:09,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:09,277 INFO L93 Difference]: Finished difference Result 30466 states and 45757 transitions. [2022-07-13 11:39:09,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 11:39:09,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 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 782 [2022-07-13 11:39:09,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:09,301 INFO L225 Difference]: With dead ends: 30466 [2022-07-13 11:39:09,301 INFO L226 Difference]: Without dead ends: 20058 [2022-07-13 11:39:09,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1583 GetRequests, 1556 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=109, Invalid=700, Unknown=3, NotChecked=0, Total=812 [2022-07-13 11:39:09,314 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 447 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:09,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 1035 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 528 Invalid, 0 Unknown, 263 Unchecked, 3.1s Time] [2022-07-13 11:39:09,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20058 states. [2022-07-13 11:39:09,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20058 to 17355. [2022-07-13 11:39:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17355 states, 17354 states have (on average 1.5145211478621643) internal successors, (26283), 17354 states have internal predecessors, (26283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:09,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17355 states to 17355 states and 26283 transitions. [2022-07-13 11:39:09,697 INFO L78 Accepts]: Start accepts. Automaton has 17355 states and 26283 transitions. Word has length 782 [2022-07-13 11:39:09,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:09,697 INFO L495 AbstractCegarLoop]: Abstraction has 17355 states and 26283 transitions. [2022-07-13 11:39:09,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:09,697 INFO L276 IsEmpty]: Start isEmpty. Operand 17355 states and 26283 transitions. [2022-07-13 11:39:09,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2022-07-13 11:39:09,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:09,719 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 19, 19, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-13 11:39:09,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 11:39:09,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:39:09,920 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:09,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:09,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1153034768, now seen corresponding path program 1 times [2022-07-13 11:39:09,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:09,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697671774] [2022-07-13 11:39:09,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:09,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:10,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5717 backedges. 3231 proven. 0 refuted. 0 times theorem prover too weak. 2486 trivial. 0 not checked. [2022-07-13 11:39:10,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:10,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697671774] [2022-07-13 11:39:10,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697671774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:10,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:10,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:10,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812610335] [2022-07-13 11:39:10,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:10,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:10,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:10,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:10,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:10,322 INFO L87 Difference]: Start difference. First operand 17355 states and 26283 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:12,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:12,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:12,852 INFO L93 Difference]: Finished difference Result 36123 states and 54530 transitions. [2022-07-13 11:39:12,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:12,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 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 785 [2022-07-13 11:39:12,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:12,872 INFO L225 Difference]: With dead ends: 36123 [2022-07-13 11:39:12,872 INFO L226 Difference]: Without dead ends: 18791 [2022-07-13 11:39:12,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:12,885 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 73 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:12,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 723 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 11:39:12,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18791 states. [2022-07-13 11:39:13,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18791 to 17375. [2022-07-13 11:39:13,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17375 states, 17374 states have (on average 1.513928859214919) internal successors, (26303), 17374 states have internal predecessors, (26303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:13,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17375 states to 17375 states and 26303 transitions. [2022-07-13 11:39:13,167 INFO L78 Accepts]: Start accepts. Automaton has 17375 states and 26303 transitions. Word has length 785 [2022-07-13 11:39:13,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:13,168 INFO L495 AbstractCegarLoop]: Abstraction has 17375 states and 26303 transitions. [2022-07-13 11:39:13,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:13,168 INFO L276 IsEmpty]: Start isEmpty. Operand 17375 states and 26303 transitions. [2022-07-13 11:39:13,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2022-07-13 11:39:13,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:13,186 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 19, 19, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 11:39:13,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-13 11:39:13,186 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:13,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:13,186 INFO L85 PathProgramCache]: Analyzing trace with hash 855496686, now seen corresponding path program 1 times [2022-07-13 11:39:13,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:13,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087139320] [2022-07-13 11:39:13,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:13,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:13,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6836 backedges. 3731 proven. 187 refuted. 0 times theorem prover too weak. 2918 trivial. 0 not checked. [2022-07-13 11:39:13,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:13,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087139320] [2022-07-13 11:39:13,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087139320] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:39:13,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578035403] [2022-07-13 11:39:13,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:13,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:39:13,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:39:13,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:39:13,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 11:39:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:15,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 3547 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 11:39:15,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:39:15,177 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:39:15,177 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:39:15,209 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:39:15,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:39:15,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:39:15,245 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:39:15,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-13 11:39:15,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:39:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6836 backedges. 2143 proven. 304 refuted. 0 times theorem prover too weak. 4389 trivial. 0 not checked. [2022-07-13 11:39:15,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:39:15,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6836 backedges. 2148 proven. 0 refuted. 0 times theorem prover too weak. 4688 trivial. 0 not checked. [2022-07-13 11:39:15,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578035403] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 11:39:15,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:39:15,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 9 [2022-07-13 11:39:15,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483342359] [2022-07-13 11:39:15,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:15,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:15,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:15,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:15,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:39:15,323 INFO L87 Difference]: Start difference. First operand 17375 states and 26303 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:16,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:16,806 INFO L93 Difference]: Finished difference Result 37176 states and 56015 transitions. [2022-07-13 11:39:16,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:16,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 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 848 [2022-07-13 11:39:16,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:16,828 INFO L225 Difference]: With dead ends: 37176 [2022-07-13 11:39:16,828 INFO L226 Difference]: Without dead ends: 19824 [2022-07-13 11:39:16,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1703 GetRequests, 1695 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 11:39:16,842 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 144 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:16,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 473 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 11:39:16,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19824 states. [2022-07-13 11:39:17,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19824 to 17375. [2022-07-13 11:39:17,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17375 states, 17374 states have (on average 1.4947047312075514) internal successors, (25969), 17374 states have internal predecessors, (25969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17375 states to 17375 states and 25969 transitions. [2022-07-13 11:39:17,182 INFO L78 Accepts]: Start accepts. Automaton has 17375 states and 25969 transitions. Word has length 848 [2022-07-13 11:39:17,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:17,183 INFO L495 AbstractCegarLoop]: Abstraction has 17375 states and 25969 transitions. [2022-07-13 11:39:17,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand 17375 states and 25969 transitions. [2022-07-13 11:39:17,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2022-07-13 11:39:17,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:17,205 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 22, 22, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-13 11:39:17,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 11:39:17,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:39:17,406 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:17,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:17,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1255240550, now seen corresponding path program 1 times [2022-07-13 11:39:17,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:17,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676453322] [2022-07-13 11:39:17,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:17,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6944 backedges. 3949 proven. 46 refuted. 0 times theorem prover too weak. 2949 trivial. 0 not checked. [2022-07-13 11:39:17,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:17,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676453322] [2022-07-13 11:39:17,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676453322] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:39:17,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543790771] [2022-07-13 11:39:17,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:17,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:39:17,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:39:17,906 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:39:17,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 11:39:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:19,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 3571 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-13 11:39:19,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:39:19,540 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:39:19,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:39:19,573 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:39:19,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:39:19,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-13 11:39:19,617 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:39:19,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:39:19,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:39:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6944 backedges. 3944 proven. 238 refuted. 0 times theorem prover too weak. 2762 trivial. 0 not checked. [2022-07-13 11:39:19,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:39:19,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6944 backedges. 3917 proven. 0 refuted. 0 times theorem prover too weak. 3027 trivial. 0 not checked. [2022-07-13 11:39:19,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543790771] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 11:39:19,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:39:19,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 10 [2022-07-13 11:39:19,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882755047] [2022-07-13 11:39:19,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:19,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:19,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:19,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:19,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 11:39:19,771 INFO L87 Difference]: Start difference. First operand 17375 states and 25969 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:21,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:22,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:22,489 INFO L93 Difference]: Finished difference Result 37176 states and 55347 transitions. [2022-07-13 11:39:22,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:22,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 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 848 [2022-07-13 11:39:22,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:22,512 INFO L225 Difference]: With dead ends: 37176 [2022-07-13 11:39:22,512 INFO L226 Difference]: Without dead ends: 19824 [2022-07-13 11:39:22,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1703 GetRequests, 1694 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-13 11:39:22,527 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 125 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:22,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 583 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 248 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 11:39:22,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19824 states. [2022-07-13 11:39:22,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19824 to 17395. [2022-07-13 11:39:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17395 states, 17394 states have (on average 1.4941359089341153) internal successors, (25989), 17394 states have internal predecessors, (25989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:22,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17395 states to 17395 states and 25989 transitions. [2022-07-13 11:39:22,851 INFO L78 Accepts]: Start accepts. Automaton has 17395 states and 25989 transitions. Word has length 848 [2022-07-13 11:39:22,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:22,851 INFO L495 AbstractCegarLoop]: Abstraction has 17395 states and 25989 transitions. [2022-07-13 11:39:22,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:22,852 INFO L276 IsEmpty]: Start isEmpty. Operand 17395 states and 25989 transitions. [2022-07-13 11:39:22,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2022-07-13 11:39:22,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:22,873 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 22, 19, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 11:39:22,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 11:39:23,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-07-13 11:39:23,074 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:23,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:23,075 INFO L85 PathProgramCache]: Analyzing trace with hash -653887438, now seen corresponding path program 1 times [2022-07-13 11:39:23,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:23,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011229039] [2022-07-13 11:39:23,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:23,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6896 backedges. 3778 proven. 0 refuted. 0 times theorem prover too weak. 3118 trivial. 0 not checked. [2022-07-13 11:39:23,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:23,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011229039] [2022-07-13 11:39:23,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011229039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:23,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:23,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:23,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163818908] [2022-07-13 11:39:23,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:23,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:23,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:23,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:23,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:23,428 INFO L87 Difference]: Start difference. First operand 17395 states and 25989 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:24,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:24,803 INFO L93 Difference]: Finished difference Result 36035 states and 53691 transitions. [2022-07-13 11:39:24,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:24,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 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 851 [2022-07-13 11:39:24,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:24,825 INFO L225 Difference]: With dead ends: 36035 [2022-07-13 11:39:24,825 INFO L226 Difference]: Without dead ends: 18663 [2022-07-13 11:39:24,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:24,835 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 86 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:24,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 713 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 11:39:24,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18663 states. [2022-07-13 11:39:25,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18663 to 17395. [2022-07-13 11:39:25,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17395 states, 17394 states have (on average 1.4920087386455099) internal successors, (25952), 17394 states have internal predecessors, (25952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17395 states to 17395 states and 25952 transitions. [2022-07-13 11:39:25,172 INFO L78 Accepts]: Start accepts. Automaton has 17395 states and 25952 transitions. Word has length 851 [2022-07-13 11:39:25,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:25,172 INFO L495 AbstractCegarLoop]: Abstraction has 17395 states and 25952 transitions. [2022-07-13 11:39:25,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:25,173 INFO L276 IsEmpty]: Start isEmpty. Operand 17395 states and 25952 transitions. [2022-07-13 11:39:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2022-07-13 11:39:25,193 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:25,193 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 22, 22, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 11:39:25,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-13 11:39:25,193 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:25,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:25,194 INFO L85 PathProgramCache]: Analyzing trace with hash -570468491, now seen corresponding path program 1 times [2022-07-13 11:39:25,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:25,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500130448] [2022-07-13 11:39:25,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:25,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:25,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6959 backedges. 3806 proven. 0 refuted. 0 times theorem prover too weak. 3153 trivial. 0 not checked. [2022-07-13 11:39:25,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:25,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500130448] [2022-07-13 11:39:25,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500130448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:25,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:25,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:25,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126543188] [2022-07-13 11:39:25,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:25,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:25,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:25,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:25,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:25,554 INFO L87 Difference]: Start difference. First operand 17395 states and 25952 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:26,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:26,923 INFO L93 Difference]: Finished difference Result 36247 states and 53990 transitions. [2022-07-13 11:39:26,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:26,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 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 851 [2022-07-13 11:39:26,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:26,945 INFO L225 Difference]: With dead ends: 36247 [2022-07-13 11:39:26,945 INFO L226 Difference]: Without dead ends: 18875 [2022-07-13 11:39:26,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:26,959 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 29 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:26,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 647 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 11:39:26,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18875 states. [2022-07-13 11:39:27,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18875 to 18357. [2022-07-13 11:39:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18357 states, 18356 states have (on average 1.4883961647417738) internal successors, (27321), 18356 states have internal predecessors, (27321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:27,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18357 states to 18357 states and 27321 transitions. [2022-07-13 11:39:27,279 INFO L78 Accepts]: Start accepts. Automaton has 18357 states and 27321 transitions. Word has length 851 [2022-07-13 11:39:27,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:27,279 INFO L495 AbstractCegarLoop]: Abstraction has 18357 states and 27321 transitions. [2022-07-13 11:39:27,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:27,280 INFO L276 IsEmpty]: Start isEmpty. Operand 18357 states and 27321 transitions. [2022-07-13 11:39:27,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2022-07-13 11:39:27,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:27,300 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 22, 22, 21, 21, 20, 20, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 11:39:27,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-13 11:39:27,300 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:27,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:27,300 INFO L85 PathProgramCache]: Analyzing trace with hash 407021035, now seen corresponding path program 1 times [2022-07-13 11:39:27,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:27,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048177434] [2022-07-13 11:39:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:27,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7175 backedges. 3954 proven. 0 refuted. 0 times theorem prover too weak. 3221 trivial. 0 not checked. [2022-07-13 11:39:27,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:27,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048177434] [2022-07-13 11:39:27,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048177434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:27,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:27,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:27,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660616803] [2022-07-13 11:39:27,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:27,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:27,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:27,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:27,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:27,714 INFO L87 Difference]: Start difference. First operand 18357 states and 27321 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:28,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:29,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:29,258 INFO L93 Difference]: Finished difference Result 37171 states and 55294 transitions. [2022-07-13 11:39:29,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:29,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 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 860 [2022-07-13 11:39:29,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:29,280 INFO L225 Difference]: With dead ends: 37171 [2022-07-13 11:39:29,280 INFO L226 Difference]: Without dead ends: 18837 [2022-07-13 11:39:29,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:29,293 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 43 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:29,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 662 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 11:39:29,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18837 states. [2022-07-13 11:39:29,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18837 to 18357. [2022-07-13 11:39:29,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18357 states, 18356 states have (on average 1.4873066027456963) internal successors, (27301), 18356 states have internal predecessors, (27301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:29,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18357 states to 18357 states and 27301 transitions. [2022-07-13 11:39:29,619 INFO L78 Accepts]: Start accepts. Automaton has 18357 states and 27301 transitions. Word has length 860 [2022-07-13 11:39:29,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:29,619 INFO L495 AbstractCegarLoop]: Abstraction has 18357 states and 27301 transitions. [2022-07-13 11:39:29,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:29,620 INFO L276 IsEmpty]: Start isEmpty. Operand 18357 states and 27301 transitions. [2022-07-13 11:39:29,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2022-07-13 11:39:29,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:29,640 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 22, 22, 21, 21, 20, 20, 19, 19, 19, 19, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 11:39:29,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-13 11:39:29,640 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:29,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:29,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1326089202, now seen corresponding path program 1 times [2022-07-13 11:39:29,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:29,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600056053] [2022-07-13 11:39:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:29,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:33,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7358 backedges. 1932 proven. 5072 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-07-13 11:39:33,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:33,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600056053] [2022-07-13 11:39:33,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600056053] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:39:33,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181762140] [2022-07-13 11:39:33,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:33,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:39:33,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:39:33,800 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:39:33,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 11:39:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:35,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 3583 conjuncts, 95 conjunts are in the unsatisfiable core [2022-07-13 11:39:35,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:39:35,520 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:39:35,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:39:35,643 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-07-13 11:39:35,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 10 [2022-07-13 11:39:35,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-13 11:39:35,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 11:39:35,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:35,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 44 [2022-07-13 11:39:35,829 INFO L356 Elim1Store]: treesize reduction 72, result has 40.0 percent of original size [2022-07-13 11:39:35,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 60 [2022-07-13 11:39:35,838 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:39:35,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2022-07-13 11:39:36,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:36,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 57 [2022-07-13 11:39:36,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:36,419 INFO L356 Elim1Store]: treesize reduction 127, result has 14.2 percent of original size [2022-07-13 11:39:36,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2022-07-13 11:39:36,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:36,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2022-07-13 11:39:36,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:36,508 INFO L356 Elim1Store]: treesize reduction 77, result has 35.8 percent of original size [2022-07-13 11:39:36,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 68 [2022-07-13 11:39:36,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:36,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 67 [2022-07-13 11:39:36,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:36,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 67 [2022-07-13 11:39:37,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:37,102 INFO L356 Elim1Store]: treesize reduction 60, result has 45.9 percent of original size [2022-07-13 11:39:37,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 160 treesize of output 155 [2022-07-13 11:39:37,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:37,142 INFO L356 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-07-13 11:39:37,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 137 treesize of output 132 [2022-07-13 11:39:37,193 INFO L356 Elim1Store]: treesize reduction 45, result has 52.6 percent of original size [2022-07-13 11:39:37,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 73 [2022-07-13 11:39:38,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:38,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:38,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:38,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:38,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:38,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:38,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 367 treesize of output 289 [2022-07-13 11:39:38,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:38,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:38,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:38,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:38,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:38,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:38,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 367 treesize of output 301 [2022-07-13 11:39:38,872 INFO L356 Elim1Store]: treesize reduction 231, result has 26.4 percent of original size [2022-07-13 11:39:38,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 367 treesize of output 380 [2022-07-13 11:39:51,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:51,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:51,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:51,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 348 treesize of output 284 [2022-07-13 11:39:51,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:51,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:51,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:51,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 348 treesize of output 272 [2022-07-13 11:39:51,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:51,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:51,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:51,395 INFO L356 Elim1Store]: treesize reduction 105, result has 29.1 percent of original size [2022-07-13 11:39:51,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 357 treesize of output 342 [2022-07-13 11:39:51,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:51,662 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 273 treesize of output 195 [2022-07-13 11:39:51,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:51,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 111 [2022-07-13 11:39:51,708 INFO L356 Elim1Store]: treesize reduction 162, result has 24.3 percent of original size [2022-07-13 11:39:51,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 139 treesize of output 156 [2022-07-13 11:39:51,808 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-07-13 11:39:51,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 35 [2022-07-13 11:39:51,889 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:39:51,890 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 11 [2022-07-13 11:39:51,921 INFO L134 CoverageAnalysis]: Checked inductivity of 7358 backedges. 2322 proven. 666 refuted. 0 times theorem prover too weak. 4370 trivial. 0 not checked. [2022-07-13 11:39:51,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:39:55,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:39:55,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:39:55,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 714 treesize of output 552 [2022-07-13 11:39:55,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:39:55,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:39:55,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 924 treesize of output 768 [2022-07-13 11:39:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 7358 backedges. 2453 proven. 141 refuted. 0 times theorem prover too weak. 4764 trivial. 0 not checked. [2022-07-13 11:39:59,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181762140] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:39:59,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 11:39:59,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 13] total 52 [2022-07-13 11:39:59,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167883414] [2022-07-13 11:39:59,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 11:39:59,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-13 11:39:59,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:59,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-13 11:39:59,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=2365, Unknown=2, NotChecked=0, Total=2652 [2022-07-13 11:39:59,859 INFO L87 Difference]: Start difference. First operand 18357 states and 27301 transitions. Second operand has 52 states, 52 states have (on average 19.53846153846154) internal successors, (1016), 52 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:01,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:03,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:05,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:06,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:09,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:11,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:13,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:15,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:17,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:41:36,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:41:36,432 INFO L93 Difference]: Finished difference Result 297571 states and 433321 transitions. [2022-07-13 11:41:36,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 483 states. [2022-07-13 11:41:36,433 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 19.53846153846154) internal successors, (1016), 52 states have internal predecessors, (1016), 0 states have call successors, (0), 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 869 [2022-07-13 11:41:36,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:41:37,199 INFO L225 Difference]: With dead ends: 297571 [2022-07-13 11:41:37,199 INFO L226 Difference]: Without dead ends: 279237 [2022-07-13 11:41:37,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2755 GetRequests, 2134 SyntacticMatches, 104 SemanticMatches, 517 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 143853 ImplicationChecksByTransitivity, 51.0s TimeCoverageRelationStatistics Valid=23041, Invalid=245799, Unknown=2, NotChecked=0, Total=268842 [2022-07-13 11:41:37,290 INFO L413 NwaCegarLoop]: 1410 mSDtfsCounter, 11906 mSDsluCounter, 27649 mSDsCounter, 0 mSdLazyCounter, 19950 mSolverCounterSat, 2059 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11906 SdHoareTripleChecker+Valid, 29059 SdHoareTripleChecker+Invalid, 26349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2059 IncrementalHoareTripleChecker+Valid, 19950 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 4337 IncrementalHoareTripleChecker+Unchecked, 40.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:41:37,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11906 Valid, 29059 Invalid, 26349 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2059 Valid, 19950 Invalid, 3 Unknown, 4337 Unchecked, 40.6s Time] [2022-07-13 11:41:37,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279237 states. [2022-07-13 11:41:43,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279237 to 174646. [2022-07-13 11:41:43,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174646 states, 174645 states have (on average 1.4717512668556214) internal successors, (257034), 174645 states have internal predecessors, (257034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:41:43,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174646 states to 174646 states and 257034 transitions. [2022-07-13 11:41:43,873 INFO L78 Accepts]: Start accepts. Automaton has 174646 states and 257034 transitions. Word has length 869 [2022-07-13 11:41:43,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:41:43,874 INFO L495 AbstractCegarLoop]: Abstraction has 174646 states and 257034 transitions. [2022-07-13 11:41:43,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 19.53846153846154) internal successors, (1016), 52 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:41:43,874 INFO L276 IsEmpty]: Start isEmpty. Operand 174646 states and 257034 transitions. [2022-07-13 11:41:44,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2022-07-13 11:41:44,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:41:44,067 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 22, 22, 21, 21, 20, 20, 19, 19, 19, 19, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 11:41:44,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-13 11:41:44,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-07-13 11:41:44,268 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:41:44,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:41:44,268 INFO L85 PathProgramCache]: Analyzing trace with hash 774626993, now seen corresponding path program 1 times [2022-07-13 11:41:44,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:41:44,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391497139] [2022-07-13 11:41:44,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:41:44,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:41:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:41:44,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7358 backedges. 1361 proven. 0 refuted. 0 times theorem prover too weak. 5997 trivial. 0 not checked. [2022-07-13 11:41:44,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:41:44,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391497139] [2022-07-13 11:41:44,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391497139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:41:44,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:41:44,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:41:44,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021166339] [2022-07-13 11:41:44,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:41:44,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:41:44,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:41:44,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:41:44,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:41:44,972 INFO L87 Difference]: Start difference. First operand 174646 states and 257034 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)