./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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.10.i.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9a657fa9aacca0974ed9e42f1311e36e1c5af368a54222ebad4a487f8951064 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 11:17:05,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 11:17:05,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 11:17:05,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 11:17:05,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 11:17:05,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 11:17:05,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 11:17:05,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 11:17:05,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 11:17:05,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 11:17:05,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 11:17:05,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 11:17:05,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 11:17:05,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 11:17:05,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 11:17:05,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 11:17:05,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 11:17:05,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 11:17:05,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 11:17:05,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 11:17:05,737 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 11:17:05,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 11:17:05,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 11:17:05,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 11:17:05,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 11:17:05,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 11:17:05,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 11:17:05,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 11:17:05,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 11:17:05,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 11:17:05,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 11:17:05,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 11:17:05,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 11:17:05,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 11:17:05,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 11:17:05,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 11:17:05,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 11:17:05,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 11:17:05,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 11:17:05,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 11:17:05,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 11:17:05,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 11:17:05,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 11:17:05,778 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 11:17:05,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 11:17:05,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 11:17:05,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 11:17:05,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 11:17:05,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 11:17:05,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 11:17:05,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 11:17:05,781 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 11:17:05,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 11:17:05,782 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 11:17:05,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 11:17:05,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 11:17:05,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 11:17:05,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 11:17:05,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 11:17:05,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 11:17:05,783 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 11:17:05,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 11:17:05,783 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 11:17:05,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 11:17:05,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 11:17:05,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 11:17:05,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 11:17:05,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 11:17:05,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 11:17:05,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 11:17:05,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 11:17:05,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 11:17:05,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 11:17:05,785 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 11:17:05,785 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 11:17:05,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 11:17:05,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9a657fa9aacca0974ed9e42f1311e36e1c5af368a54222ebad4a487f8951064 [2022-07-22 11:17:05,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 11:17:05,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 11:17:05,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 11:17:05,977 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 11:17:05,977 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 11:17:05,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c [2022-07-22 11:17:06,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75f7cd1d8/05f03574c185472285891425fe1a4305/FLAGeeaa65e07 [2022-07-22 11:17:06,496 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 11:17:06,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c [2022-07-22 11:17:06,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75f7cd1d8/05f03574c185472285891425fe1a4305/FLAGeeaa65e07 [2022-07-22 11:17:07,000 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75f7cd1d8/05f03574c185472285891425fe1a4305 [2022-07-22 11:17:07,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 11:17:07,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 11:17:07,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 11:17:07,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 11:17:07,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 11:17:07,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:17:07" (1/1) ... [2022-07-22 11:17:07,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@771604a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:07, skipping insertion in model container [2022-07-22 11:17:07,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:17:07" (1/1) ... [2022-07-22 11:17:07,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 11:17:07,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 11:17:07,470 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.10.i.cil-1.c[73581,73594] [2022-07-22 11:17:07,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 11:17:07,508 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 11:17:07,617 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.10.i.cil-1.c[73581,73594] [2022-07-22 11:17:07,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 11:17:07,639 INFO L208 MainTranslator]: Completed translation [2022-07-22 11:17:07,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:07 WrapperNode [2022-07-22 11:17:07,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 11:17:07,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 11:17:07,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 11:17:07,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 11:17:07,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:07" (1/1) ... [2022-07-22 11:17:07,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:07" (1/1) ... [2022-07-22 11:17:07,719 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 788 [2022-07-22 11:17:07,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 11:17:07,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 11:17:07,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 11:17:07,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 11:17:07,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:07" (1/1) ... [2022-07-22 11:17:07,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:07" (1/1) ... [2022-07-22 11:17:07,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:07" (1/1) ... [2022-07-22 11:17:07,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:07" (1/1) ... [2022-07-22 11:17:07,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:07" (1/1) ... [2022-07-22 11:17:07,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:07" (1/1) ... [2022-07-22 11:17:07,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:07" (1/1) ... [2022-07-22 11:17:07,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 11:17:07,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 11:17:07,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 11:17:07,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 11:17:07,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:07" (1/1) ... [2022-07-22 11:17:07,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 11:17:07,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:17:07,833 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) [2022-07-22 11:17:07,866 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 [2022-07-22 11:17:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 11:17:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 11:17:07,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 11:17:07,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 11:17:07,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 11:17:07,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 11:17:07,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 11:17:07,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 11:17:07,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 11:17:08,054 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 11:17:08,055 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 11:17:08,073 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:17:09,023 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-22 11:17:09,023 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-22 11:17:09,023 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 11:17:09,028 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 11:17:09,028 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 11:17:09,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:17:09 BoogieIcfgContainer [2022-07-22 11:17:09,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 11:17:09,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 11:17:09,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 11:17:09,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 11:17:09,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:17:07" (1/3) ... [2022-07-22 11:17:09,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7fad62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:17:09, skipping insertion in model container [2022-07-22 11:17:09,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:07" (2/3) ... [2022-07-22 11:17:09,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7fad62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:17:09, skipping insertion in model container [2022-07-22 11:17:09,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:17:09" (3/3) ... [2022-07-22 11:17:09,035 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.10.i.cil-1.c [2022-07-22 11:17:09,044 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 11:17:09,044 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 11:17:09,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 11:17:09,083 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@5fdbe502, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2132b68f [2022-07-22 11:17:09,083 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 11:17:09,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 146 states have (on average 1.7123287671232876) internal successors, (250), 147 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:09,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-22 11:17:09,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:09,094 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] [2022-07-22 11:17:09,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:09,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:09,098 INFO L85 PathProgramCache]: Analyzing trace with hash 917223054, now seen corresponding path program 1 times [2022-07-22 11:17:09,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:09,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466505449] [2022-07-22 11:17:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:09,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:09,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:09,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:09,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466505449] [2022-07-22 11:17:09,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466505449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:09,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:09,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:09,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485725739] [2022-07-22 11:17:09,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:09,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:09,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:09,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:09,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:09,515 INFO L87 Difference]: Start difference. First operand has 148 states, 146 states have (on average 1.7123287671232876) internal successors, (250), 147 states have internal predecessors, (250), 0 states have call successors, (0), 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 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:11,137 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:11,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:11,608 INFO L93 Difference]: Finished difference Result 415 states and 704 transitions. [2022-07-22 11:17:11,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:11,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-07-22 11:17:11,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:11,620 INFO L225 Difference]: With dead ends: 415 [2022-07-22 11:17:11,621 INFO L226 Difference]: Without dead ends: 252 [2022-07-22 11:17:11,623 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 [2022-07-22 11:17:11,627 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 152 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:11,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 429 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 11:17:11,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-07-22 11:17:11,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 175. [2022-07-22 11:17:11,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.603448275862069) internal successors, (279), 174 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:11,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 279 transitions. [2022-07-22 11:17:11,682 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 279 transitions. Word has length 44 [2022-07-22 11:17:11,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:11,683 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 279 transitions. [2022-07-22 11:17:11,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:11,683 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 279 transitions. [2022-07-22 11:17:11,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-22 11:17:11,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:11,685 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] [2022-07-22 11:17:11,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 11:17:11,685 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:11,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:11,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1833262993, now seen corresponding path program 1 times [2022-07-22 11:17:11,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:11,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140646571] [2022-07-22 11:17:11,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:11,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:11,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:11,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140646571] [2022-07-22 11:17:11,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140646571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:11,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:11,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:11,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660274750] [2022-07-22 11:17:11,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:11,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:11,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:11,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:11,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:11,846 INFO L87 Difference]: Start difference. First operand 175 states and 279 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:13,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:13,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:13,584 INFO L93 Difference]: Finished difference Result 368 states and 585 transitions. [2022-07-22 11:17:13,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:13,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-07-22 11:17:13,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:13,585 INFO L225 Difference]: With dead ends: 368 [2022-07-22 11:17:13,585 INFO L226 Difference]: Without dead ends: 203 [2022-07-22 11:17:13,586 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 [2022-07-22 11:17:13,587 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 22 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:13,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 457 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 11:17:13,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-22 11:17:13,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 186. [2022-07-22 11:17:13,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.6108108108108108) internal successors, (298), 185 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:13,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 298 transitions. [2022-07-22 11:17:13,607 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 298 transitions. Word has length 45 [2022-07-22 11:17:13,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:13,607 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 298 transitions. [2022-07-22 11:17:13,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:13,608 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 298 transitions. [2022-07-22 11:17:13,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-22 11:17:13,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:13,609 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] [2022-07-22 11:17:13,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 11:17:13,610 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:13,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:13,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1347538286, now seen corresponding path program 1 times [2022-07-22 11:17:13,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:13,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455896020] [2022-07-22 11:17:13,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:13,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:13,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:13,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455896020] [2022-07-22 11:17:13,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455896020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:13,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:13,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:13,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786225025] [2022-07-22 11:17:13,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:13,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:13,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:13,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:13,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:13,723 INFO L87 Difference]: Start difference. First operand 186 states and 298 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:15,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:15,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:15,756 INFO L93 Difference]: Finished difference Result 506 states and 815 transitions. [2022-07-22 11:17:15,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:15,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-07-22 11:17:15,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:15,759 INFO L225 Difference]: With dead ends: 506 [2022-07-22 11:17:15,760 INFO L226 Difference]: Without dead ends: 341 [2022-07-22 11:17:15,760 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 [2022-07-22 11:17:15,761 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 141 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:15,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 598 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 11:17:15,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-07-22 11:17:15,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 218. [2022-07-22 11:17:15,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.608294930875576) internal successors, (349), 217 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:15,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 349 transitions. [2022-07-22 11:17:15,782 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 349 transitions. Word has length 58 [2022-07-22 11:17:15,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:15,783 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 349 transitions. [2022-07-22 11:17:15,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:15,784 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 349 transitions. [2022-07-22 11:17:15,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-22 11:17:15,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:15,789 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] [2022-07-22 11:17:15,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 11:17:15,790 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:15,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:15,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1361269889, now seen corresponding path program 1 times [2022-07-22 11:17:15,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:15,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641973995] [2022-07-22 11:17:15,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:15,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:15,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:15,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641973995] [2022-07-22 11:17:15,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641973995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:15,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:15,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:15,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14981574] [2022-07-22 11:17:15,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:15,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:15,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:15,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:15,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:15,951 INFO L87 Difference]: Start difference. First operand 218 states and 349 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:17,964 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 [] [2022-07-22 11:17:18,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:18,317 INFO L93 Difference]: Finished difference Result 514 states and 818 transitions. [2022-07-22 11:17:18,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:18,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-07-22 11:17:18,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:18,319 INFO L225 Difference]: With dead ends: 514 [2022-07-22 11:17:18,319 INFO L226 Difference]: Without dead ends: 317 [2022-07-22 11:17:18,320 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 [2022-07-22 11:17:18,320 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 146 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 61 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:18,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 322 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 259 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 11:17:18,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-07-22 11:17:18,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 218. [2022-07-22 11:17:18,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5898617511520738) internal successors, (345), 217 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:18,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 345 transitions. [2022-07-22 11:17:18,331 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 345 transitions. Word has length 59 [2022-07-22 11:17:18,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:18,331 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 345 transitions. [2022-07-22 11:17:18,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:18,331 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 345 transitions. [2022-07-22 11:17:18,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-22 11:17:18,332 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:18,333 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] [2022-07-22 11:17:18,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 11:17:18,333 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:18,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:18,334 INFO L85 PathProgramCache]: Analyzing trace with hash 525633555, now seen corresponding path program 1 times [2022-07-22 11:17:18,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:18,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487021996] [2022-07-22 11:17:18,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:18,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:18,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:18,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:18,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487021996] [2022-07-22 11:17:18,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487021996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:18,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:18,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:18,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933440291] [2022-07-22 11:17:18,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:18,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:18,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:18,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:18,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:18,440 INFO L87 Difference]: Start difference. First operand 218 states and 345 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:20,352 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:20,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:20,521 INFO L93 Difference]: Finished difference Result 431 states and 679 transitions. [2022-07-22 11:17:20,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:20,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-07-22 11:17:20,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:20,522 INFO L225 Difference]: With dead ends: 431 [2022-07-22 11:17:20,522 INFO L226 Difference]: Without dead ends: 234 [2022-07-22 11:17:20,523 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 [2022-07-22 11:17:20,523 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 26 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:20,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 461 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 11:17:20,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-22 11:17:20,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 218. [2022-07-22 11:17:20,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5852534562211982) internal successors, (344), 217 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:20,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 344 transitions. [2022-07-22 11:17:20,539 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 344 transitions. Word has length 59 [2022-07-22 11:17:20,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:20,539 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 344 transitions. [2022-07-22 11:17:20,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:20,540 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 344 transitions. [2022-07-22 11:17:20,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-22 11:17:20,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:20,541 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] [2022-07-22 11:17:20,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 11:17:20,542 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:20,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:20,543 INFO L85 PathProgramCache]: Analyzing trace with hash -326483222, now seen corresponding path program 1 times [2022-07-22 11:17:20,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:20,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234602029] [2022-07-22 11:17:20,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:20,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:20,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:20,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234602029] [2022-07-22 11:17:20,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234602029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:20,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:20,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:20,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017871009] [2022-07-22 11:17:20,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:20,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:20,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:20,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:20,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:20,633 INFO L87 Difference]: Start difference. First operand 218 states and 344 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:22,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:22,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:22,243 INFO L93 Difference]: Finished difference Result 430 states and 677 transitions. [2022-07-22 11:17:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:22,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-07-22 11:17:22,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:22,245 INFO L225 Difference]: With dead ends: 430 [2022-07-22 11:17:22,245 INFO L226 Difference]: Without dead ends: 233 [2022-07-22 11:17:22,245 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 [2022-07-22 11:17:22,246 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 19 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:22,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 463 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 11:17:22,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-22 11:17:22,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 218. [2022-07-22 11:17:22,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5806451612903225) internal successors, (343), 217 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:22,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 343 transitions. [2022-07-22 11:17:22,256 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 343 transitions. Word has length 59 [2022-07-22 11:17:22,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:22,257 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 343 transitions. [2022-07-22 11:17:22,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:22,257 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 343 transitions. [2022-07-22 11:17:22,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-22 11:17:22,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:22,258 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] [2022-07-22 11:17:22,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 11:17:22,258 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:22,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:22,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1965263786, now seen corresponding path program 1 times [2022-07-22 11:17:22,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:22,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191858758] [2022-07-22 11:17:22,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:22,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:22,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:22,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191858758] [2022-07-22 11:17:22,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191858758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:22,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:22,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:22,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420201864] [2022-07-22 11:17:22,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:22,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:22,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:22,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:22,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:22,383 INFO L87 Difference]: Start difference. First operand 218 states and 343 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:22,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:22,813 INFO L93 Difference]: Finished difference Result 514 states and 809 transitions. [2022-07-22 11:17:22,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:22,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-07-22 11:17:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:22,815 INFO L225 Difference]: With dead ends: 514 [2022-07-22 11:17:22,815 INFO L226 Difference]: Without dead ends: 317 [2022-07-22 11:17:22,816 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 [2022-07-22 11:17:22,816 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 139 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:22,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 322 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 11:17:22,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-07-22 11:17:22,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 219. [2022-07-22 11:17:22,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.5688073394495412) internal successors, (342), 218 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:22,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 342 transitions. [2022-07-22 11:17:22,821 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 342 transitions. Word has length 59 [2022-07-22 11:17:22,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:22,822 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 342 transitions. [2022-07-22 11:17:22,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:22,822 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 342 transitions. [2022-07-22 11:17:22,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-22 11:17:22,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:22,831 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] [2022-07-22 11:17:22,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 11:17:22,832 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:22,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:22,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1487157225, now seen corresponding path program 1 times [2022-07-22 11:17:22,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:22,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332486245] [2022-07-22 11:17:22,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:22,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:22,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:22,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332486245] [2022-07-22 11:17:22,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332486245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:22,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:22,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:22,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187748874] [2022-07-22 11:17:22,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:22,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:22,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:22,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:22,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:22,902 INFO L87 Difference]: Start difference. First operand 219 states and 342 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:23,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:23,493 INFO L93 Difference]: Finished difference Result 430 states and 673 transitions. [2022-07-22 11:17:23,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:23,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-07-22 11:17:23,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:23,494 INFO L225 Difference]: With dead ends: 430 [2022-07-22 11:17:23,494 INFO L226 Difference]: Without dead ends: 232 [2022-07-22 11:17:23,495 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 [2022-07-22 11:17:23,495 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 22 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:23,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 467 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:17:23,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-22 11:17:23,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 219. [2022-07-22 11:17:23,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.5642201834862386) internal successors, (341), 218 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:23,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 341 transitions. [2022-07-22 11:17:23,501 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 341 transitions. Word has length 60 [2022-07-22 11:17:23,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:23,501 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 341 transitions. [2022-07-22 11:17:23,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:23,502 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 341 transitions. [2022-07-22 11:17:23,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-22 11:17:23,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:23,503 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] [2022-07-22 11:17:23,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 11:17:23,503 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:23,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:23,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1805600728, now seen corresponding path program 1 times [2022-07-22 11:17:23,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:23,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009747456] [2022-07-22 11:17:23,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:23,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:23,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:23,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009747456] [2022-07-22 11:17:23,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009747456] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:23,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:23,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:23,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045749816] [2022-07-22 11:17:23,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:23,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:23,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:23,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:23,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:23,578 INFO L87 Difference]: Start difference. First operand 219 states and 341 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) [2022-07-22 11:17:23,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:23,983 INFO L93 Difference]: Finished difference Result 430 states and 672 transitions. [2022-07-22 11:17:23,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:23,984 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 [2022-07-22 11:17:23,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:23,984 INFO L225 Difference]: With dead ends: 430 [2022-07-22 11:17:23,984 INFO L226 Difference]: Without dead ends: 232 [2022-07-22 11:17:23,985 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 [2022-07-22 11:17:23,985 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 20 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:23,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 467 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 11:17:23,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-22 11:17:23,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 219. [2022-07-22 11:17:23,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.5596330275229358) internal successors, (340), 218 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:23,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 340 transitions. [2022-07-22 11:17:23,990 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 340 transitions. Word has length 61 [2022-07-22 11:17:23,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:23,990 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 340 transitions. [2022-07-22 11:17:23,990 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) [2022-07-22 11:17:23,990 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 340 transitions. [2022-07-22 11:17:23,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-22 11:17:23,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:23,990 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] [2022-07-22 11:17:23,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 11:17:23,991 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:23,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:23,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2066644860, now seen corresponding path program 1 times [2022-07-22 11:17:23,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:23,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525450783] [2022-07-22 11:17:23,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:23,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:24,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:24,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525450783] [2022-07-22 11:17:24,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525450783] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:24,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:24,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:24,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674735376] [2022-07-22 11:17:24,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:24,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:24,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:24,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:24,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:24,062 INFO L87 Difference]: Start difference. First operand 219 states and 340 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) [2022-07-22 11:17:24,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:24,687 INFO L93 Difference]: Finished difference Result 420 states and 658 transitions. [2022-07-22 11:17:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:24,687 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 [2022-07-22 11:17:24,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:24,688 INFO L225 Difference]: With dead ends: 420 [2022-07-22 11:17:24,688 INFO L226 Difference]: Without dead ends: 222 [2022-07-22 11:17:24,688 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 [2022-07-22 11:17:24,689 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 11 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:24,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 481 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:17:24,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-22 11:17:24,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 219. [2022-07-22 11:17:24,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.555045871559633) internal successors, (339), 218 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:24,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 339 transitions. [2022-07-22 11:17:24,693 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 339 transitions. Word has length 62 [2022-07-22 11:17:24,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:24,693 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 339 transitions. [2022-07-22 11:17:24,693 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) [2022-07-22 11:17:24,693 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 339 transitions. [2022-07-22 11:17:24,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-22 11:17:24,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:24,694 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] [2022-07-22 11:17:24,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 11:17:24,694 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:24,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:24,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1454771428, now seen corresponding path program 1 times [2022-07-22 11:17:24,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:24,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47921272] [2022-07-22 11:17:24,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:24,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:24,769 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:24,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:24,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47921272] [2022-07-22 11:17:24,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47921272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:24,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:24,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:24,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350049814] [2022-07-22 11:17:24,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:24,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:24,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:24,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:24,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:24,771 INFO L87 Difference]: Start difference. First operand 219 states and 339 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) [2022-07-22 11:17:25,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:25,823 INFO L93 Difference]: Finished difference Result 515 states and 803 transitions. [2022-07-22 11:17:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:25,823 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 [2022-07-22 11:17:25,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:25,824 INFO L225 Difference]: With dead ends: 515 [2022-07-22 11:17:25,824 INFO L226 Difference]: Without dead ends: 317 [2022-07-22 11:17:25,825 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 [2022-07-22 11:17:25,825 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 116 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:25,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 340 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 11:17:25,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-07-22 11:17:25,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 242. [2022-07-22 11:17:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.5933609958506223) internal successors, (384), 241 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:25,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 384 transitions. [2022-07-22 11:17:25,829 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 384 transitions. Word has length 62 [2022-07-22 11:17:25,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:25,830 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 384 transitions. [2022-07-22 11:17:25,830 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) [2022-07-22 11:17:25,830 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 384 transitions. [2022-07-22 11:17:25,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 11:17:25,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:25,830 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:25,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 11:17:25,831 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:25,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:25,832 INFO L85 PathProgramCache]: Analyzing trace with hash 413039593, now seen corresponding path program 1 times [2022-07-22 11:17:25,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:25,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729172770] [2022-07-22 11:17:25,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:25,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:25,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:25,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729172770] [2022-07-22 11:17:25,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729172770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:25,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:25,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:25,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292301617] [2022-07-22 11:17:25,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:25,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:25,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:25,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:25,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:25,960 INFO L87 Difference]: Start difference. First operand 242 states and 384 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:26,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:26,653 INFO L93 Difference]: Finished difference Result 614 states and 983 transitions. [2022-07-22 11:17:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:26,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-07-22 11:17:26,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:26,655 INFO L225 Difference]: With dead ends: 614 [2022-07-22 11:17:26,655 INFO L226 Difference]: Without dead ends: 393 [2022-07-22 11:17:26,656 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 [2022-07-22 11:17:26,656 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 122 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:26,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 332 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:17:26,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-07-22 11:17:26,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 306. [2022-07-22 11:17:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.619672131147541) internal successors, (494), 305 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:26,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 494 transitions. [2022-07-22 11:17:26,662 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 494 transitions. Word has length 90 [2022-07-22 11:17:26,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:26,662 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 494 transitions. [2022-07-22 11:17:26,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:26,662 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 494 transitions. [2022-07-22 11:17:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-22 11:17:26,664 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:26,665 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:26,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 11:17:26,665 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:26,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:26,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1796798992, now seen corresponding path program 1 times [2022-07-22 11:17:26,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:26,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885549328] [2022-07-22 11:17:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:26,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:26,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:26,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885549328] [2022-07-22 11:17:26,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885549328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:26,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:26,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:26,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659633828] [2022-07-22 11:17:26,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:26,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:26,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:26,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:26,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:26,742 INFO L87 Difference]: Start difference. First operand 306 states and 494 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:27,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:27,986 INFO L93 Difference]: Finished difference Result 706 states and 1136 transitions. [2022-07-22 11:17:27,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:27,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-07-22 11:17:27,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:27,988 INFO L225 Difference]: With dead ends: 706 [2022-07-22 11:17:27,988 INFO L226 Difference]: Without dead ends: 421 [2022-07-22 11:17:27,989 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 [2022-07-22 11:17:27,989 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 118 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:27,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 320 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 11:17:27,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-07-22 11:17:27,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 343. [2022-07-22 11:17:27,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.628654970760234) internal successors, (557), 342 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:27,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 557 transitions. [2022-07-22 11:17:27,997 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 557 transitions. Word has length 95 [2022-07-22 11:17:27,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:27,997 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 557 transitions. [2022-07-22 11:17:27,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:27,998 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 557 transitions. [2022-07-22 11:17:27,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-22 11:17:27,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:27,999 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:27,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 11:17:27,999 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:27,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:27,999 INFO L85 PathProgramCache]: Analyzing trace with hash -2019754981, now seen corresponding path program 1 times [2022-07-22 11:17:28,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:28,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091623517] [2022-07-22 11:17:28,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:28,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:17:28,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:28,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091623517] [2022-07-22 11:17:28,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091623517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:28,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:28,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:28,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429202202] [2022-07-22 11:17:28,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:28,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:28,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:28,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:28,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:28,092 INFO L87 Difference]: Start difference. First operand 343 states and 557 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) [2022-07-22 11:17:28,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:28,566 INFO L93 Difference]: Finished difference Result 705 states and 1149 transitions. [2022-07-22 11:17:28,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:28,567 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 96 [2022-07-22 11:17:28,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:28,568 INFO L225 Difference]: With dead ends: 705 [2022-07-22 11:17:28,568 INFO L226 Difference]: Without dead ends: 383 [2022-07-22 11:17:28,569 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 [2022-07-22 11:17:28,570 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 31 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:28,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 485 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:17:28,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-07-22 11:17:28,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 365. [2022-07-22 11:17:28,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.6263736263736264) internal successors, (592), 364 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:28,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 592 transitions. [2022-07-22 11:17:28,580 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 592 transitions. Word has length 96 [2022-07-22 11:17:28,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:28,581 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 592 transitions. [2022-07-22 11:17:28,581 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) [2022-07-22 11:17:28,582 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 592 transitions. [2022-07-22 11:17:28,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 11:17:28,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:28,583 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:28,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 11:17:28,583 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:28,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:28,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1199487487, now seen corresponding path program 1 times [2022-07-22 11:17:28,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:28,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132049998] [2022-07-22 11:17:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:28,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 11:17:28,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:28,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132049998] [2022-07-22 11:17:28,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132049998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:28,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:28,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:28,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562645455] [2022-07-22 11:17:28,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:28,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:28,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:28,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:28,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:28,710 INFO L87 Difference]: Start difference. First operand 365 states and 592 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2022-07-22 11:17:29,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:29,356 INFO L93 Difference]: Finished difference Result 727 states and 1183 transitions. [2022-07-22 11:17:29,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:29,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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 110 [2022-07-22 11:17:29,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:29,358 INFO L225 Difference]: With dead ends: 727 [2022-07-22 11:17:29,358 INFO L226 Difference]: Without dead ends: 383 [2022-07-22 11:17:29,359 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 [2022-07-22 11:17:29,359 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 40 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:29,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 485 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:17:29,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-07-22 11:17:29,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 365. [2022-07-22 11:17:29,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.6236263736263736) internal successors, (591), 364 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) [2022-07-22 11:17:29,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 591 transitions. [2022-07-22 11:17:29,367 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 591 transitions. Word has length 110 [2022-07-22 11:17:29,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:29,367 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 591 transitions. [2022-07-22 11:17:29,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2022-07-22 11:17:29,368 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 591 transitions. [2022-07-22 11:17:29,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 11:17:29,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:29,369 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:29,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 11:17:29,369 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:29,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:29,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1657732886, now seen corresponding path program 1 times [2022-07-22 11:17:29,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:29,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105809524] [2022-07-22 11:17:29,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:29,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:29,445 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 11:17:29,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:29,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105809524] [2022-07-22 11:17:29,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105809524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:29,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:29,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:29,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307367499] [2022-07-22 11:17:29,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:29,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:29,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:29,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:29,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:29,449 INFO L87 Difference]: Start difference. First operand 365 states and 591 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2022-07-22 11:17:30,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:30,117 INFO L93 Difference]: Finished difference Result 783 states and 1260 transitions. [2022-07-22 11:17:30,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:30,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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 110 [2022-07-22 11:17:30,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:30,119 INFO L225 Difference]: With dead ends: 783 [2022-07-22 11:17:30,119 INFO L226 Difference]: Without dead ends: 439 [2022-07-22 11:17:30,119 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 [2022-07-22 11:17:30,120 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 137 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:30,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 322 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:17:30,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-07-22 11:17:30,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 365. [2022-07-22 11:17:30,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.6071428571428572) internal successors, (585), 364 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:30,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 585 transitions. [2022-07-22 11:17:30,127 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 585 transitions. Word has length 110 [2022-07-22 11:17:30,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:30,127 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 585 transitions. [2022-07-22 11:17:30,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2022-07-22 11:17:30,127 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 585 transitions. [2022-07-22 11:17:30,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 11:17:30,128 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:30,128 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:30,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 11:17:30,128 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:30,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:30,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1035654471, now seen corresponding path program 1 times [2022-07-22 11:17:30,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:30,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978372450] [2022-07-22 11:17:30,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:30,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 11:17:30,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:30,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978372450] [2022-07-22 11:17:30,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978372450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:30,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:30,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:30,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174633850] [2022-07-22 11:17:30,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:30,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:30,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:30,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:30,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:30,204 INFO L87 Difference]: Start difference. First operand 365 states and 585 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) [2022-07-22 11:17:31,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:31,051 INFO L93 Difference]: Finished difference Result 783 states and 1248 transitions. [2022-07-22 11:17:31,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:31,051 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 111 [2022-07-22 11:17:31,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:31,052 INFO L225 Difference]: With dead ends: 783 [2022-07-22 11:17:31,052 INFO L226 Difference]: Without dead ends: 439 [2022-07-22 11:17:31,053 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 [2022-07-22 11:17:31,053 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 141 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:31,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 322 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 11:17:31,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-07-22 11:17:31,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 365. [2022-07-22 11:17:31,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.5879120879120878) internal successors, (578), 364 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 578 transitions. [2022-07-22 11:17:31,059 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 578 transitions. Word has length 111 [2022-07-22 11:17:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:31,059 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 578 transitions. [2022-07-22 11:17:31,059 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) [2022-07-22 11:17:31,059 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 578 transitions. [2022-07-22 11:17:31,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 11:17:31,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:31,060 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:31,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 11:17:31,060 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:31,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:31,061 INFO L85 PathProgramCache]: Analyzing trace with hash 44793668, now seen corresponding path program 1 times [2022-07-22 11:17:31,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:31,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031544521] [2022-07-22 11:17:31,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:31,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:31,137 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 11:17:31,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:31,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031544521] [2022-07-22 11:17:31,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031544521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:31,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:31,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:31,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970460126] [2022-07-22 11:17:31,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:31,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:31,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:31,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:31,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:31,139 INFO L87 Difference]: Start difference. First operand 365 states and 578 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) [2022-07-22 11:17:32,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:32,073 INFO L93 Difference]: Finished difference Result 783 states and 1234 transitions. [2022-07-22 11:17:32,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:32,073 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 112 [2022-07-22 11:17:32,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:32,075 INFO L225 Difference]: With dead ends: 783 [2022-07-22 11:17:32,075 INFO L226 Difference]: Without dead ends: 439 [2022-07-22 11:17:32,075 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 [2022-07-22 11:17:32,076 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 139 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:32,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 322 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 11:17:32,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-07-22 11:17:32,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 365. [2022-07-22 11:17:32,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.5686813186813187) internal successors, (571), 364 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:32,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 571 transitions. [2022-07-22 11:17:32,094 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 571 transitions. Word has length 112 [2022-07-22 11:17:32,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:32,094 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 571 transitions. [2022-07-22 11:17:32,094 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) [2022-07-22 11:17:32,094 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 571 transitions. [2022-07-22 11:17:32,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 11:17:32,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:32,095 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:32,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 11:17:32,095 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:32,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:32,096 INFO L85 PathProgramCache]: Analyzing trace with hash 829319710, now seen corresponding path program 1 times [2022-07-22 11:17:32,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:32,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734011500] [2022-07-22 11:17:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:32,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 11:17:32,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:32,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734011500] [2022-07-22 11:17:32,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734011500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:32,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:32,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:32,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720631219] [2022-07-22 11:17:32,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:32,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:32,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:32,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:32,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:32,199 INFO L87 Difference]: Start difference. First operand 365 states and 571 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) [2022-07-22 11:17:32,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:32,813 INFO L93 Difference]: Finished difference Result 783 states and 1220 transitions. [2022-07-22 11:17:32,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:32,813 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 113 [2022-07-22 11:17:32,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:32,815 INFO L225 Difference]: With dead ends: 783 [2022-07-22 11:17:32,815 INFO L226 Difference]: Without dead ends: 439 [2022-07-22 11:17:32,815 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 [2022-07-22 11:17:32,815 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 137 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:32,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 322 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:17:32,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-07-22 11:17:32,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 365. [2022-07-22 11:17:32,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.5494505494505495) internal successors, (564), 364 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:32,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 564 transitions. [2022-07-22 11:17:32,823 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 564 transitions. Word has length 113 [2022-07-22 11:17:32,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:32,823 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 564 transitions. [2022-07-22 11:17:32,823 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) [2022-07-22 11:17:32,823 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 564 transitions. [2022-07-22 11:17:32,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 11:17:32,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:32,825 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] [2022-07-22 11:17:32,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 11:17:32,826 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:32,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:32,826 INFO L85 PathProgramCache]: Analyzing trace with hash 198816901, now seen corresponding path program 1 times [2022-07-22 11:17:32,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:32,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028215778] [2022-07-22 11:17:32,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:32,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 11:17:32,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:32,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028215778] [2022-07-22 11:17:32,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028215778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:32,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:32,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:32,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530267324] [2022-07-22 11:17:32,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:32,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:32,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:32,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:32,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:32,950 INFO L87 Difference]: Start difference. First operand 365 states and 564 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:33,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:33,516 INFO L93 Difference]: Finished difference Result 799 states and 1236 transitions. [2022-07-22 11:17:33,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:33,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 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 118 [2022-07-22 11:17:33,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:33,518 INFO L225 Difference]: With dead ends: 799 [2022-07-22 11:17:33,518 INFO L226 Difference]: Without dead ends: 455 [2022-07-22 11:17:33,518 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 [2022-07-22 11:17:33,518 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 74 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:33,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 453 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:17:33,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-07-22 11:17:33,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 405. [2022-07-22 11:17:33,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 1.551980198019802) internal successors, (627), 404 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:33,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 627 transitions. [2022-07-22 11:17:33,524 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 627 transitions. Word has length 118 [2022-07-22 11:17:33,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:33,524 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 627 transitions. [2022-07-22 11:17:33,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:33,525 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 627 transitions. [2022-07-22 11:17:33,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 11:17:33,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:33,525 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] [2022-07-22 11:17:33,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 11:17:33,526 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:33,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:33,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1932921351, now seen corresponding path program 1 times [2022-07-22 11:17:33,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:33,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146231756] [2022-07-22 11:17:33,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:33,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 11:17:33,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:33,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146231756] [2022-07-22 11:17:33,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146231756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:33,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:33,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:33,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744009875] [2022-07-22 11:17:33,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:33,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:33,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:33,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:33,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:33,602 INFO L87 Difference]: Start difference. First operand 405 states and 627 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:34,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:35,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:35,185 INFO L93 Difference]: Finished difference Result 834 states and 1293 transitions. [2022-07-22 11:17:35,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:35,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 118 [2022-07-22 11:17:35,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:35,187 INFO L225 Difference]: With dead ends: 834 [2022-07-22 11:17:35,187 INFO L226 Difference]: Without dead ends: 450 [2022-07-22 11:17:35,188 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 [2022-07-22 11:17:35,188 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 33 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:35,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 573 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 11:17:35,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-07-22 11:17:35,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 429. [2022-07-22 11:17:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.5467289719626167) internal successors, (662), 428 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:35,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 662 transitions. [2022-07-22 11:17:35,196 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 662 transitions. Word has length 118 [2022-07-22 11:17:35,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:35,196 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 662 transitions. [2022-07-22 11:17:35,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:35,197 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 662 transitions. [2022-07-22 11:17:35,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-22 11:17:35,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:35,198 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] [2022-07-22 11:17:35,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 11:17:35,198 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:35,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:35,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2071638908, now seen corresponding path program 1 times [2022-07-22 11:17:35,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:35,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464547449] [2022-07-22 11:17:35,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:35,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 11:17:35,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:35,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464547449] [2022-07-22 11:17:35,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464547449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:35,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:35,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:35,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155241403] [2022-07-22 11:17:35,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:35,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:35,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:35,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:35,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:35,306 INFO L87 Difference]: Start difference. First operand 429 states and 662 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 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) [2022-07-22 11:17:36,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:36,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:36,737 INFO L93 Difference]: Finished difference Result 951 states and 1466 transitions. [2022-07-22 11:17:36,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:36,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 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 126 [2022-07-22 11:17:36,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:36,741 INFO L225 Difference]: With dead ends: 951 [2022-07-22 11:17:36,741 INFO L226 Difference]: Without dead ends: 543 [2022-07-22 11:17:36,742 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 [2022-07-22 11:17:36,742 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 107 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:36,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 323 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 11:17:36,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-07-22 11:17:36,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 472. [2022-07-22 11:17:36,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.5520169851380043) internal successors, (731), 471 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:36,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 731 transitions. [2022-07-22 11:17:36,750 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 731 transitions. Word has length 126 [2022-07-22 11:17:36,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:36,750 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 731 transitions. [2022-07-22 11:17:36,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 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) [2022-07-22 11:17:36,750 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 731 transitions. [2022-07-22 11:17:36,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 11:17:36,751 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:36,751 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] [2022-07-22 11:17:36,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 11:17:36,752 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:36,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:36,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1967179869, now seen corresponding path program 1 times [2022-07-22 11:17:36,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:36,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642432989] [2022-07-22 11:17:36,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:36,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 11:17:36,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:36,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642432989] [2022-07-22 11:17:36,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642432989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:36,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:36,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:36,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389851684] [2022-07-22 11:17:36,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:36,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:36,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:36,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:36,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:36,859 INFO L87 Difference]: Start difference. First operand 472 states and 731 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:37,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:37,677 INFO L93 Difference]: Finished difference Result 997 states and 1540 transitions. [2022-07-22 11:17:37,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:37,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 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 127 [2022-07-22 11:17:37,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:37,681 INFO L225 Difference]: With dead ends: 997 [2022-07-22 11:17:37,681 INFO L226 Difference]: Without dead ends: 544 [2022-07-22 11:17:37,682 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 [2022-07-22 11:17:37,682 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 108 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:37,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 322 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 11:17:37,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-07-22 11:17:37,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 474. [2022-07-22 11:17:37,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 1.5517970401691332) internal successors, (734), 473 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:37,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 734 transitions. [2022-07-22 11:17:37,695 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 734 transitions. Word has length 127 [2022-07-22 11:17:37,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:37,695 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 734 transitions. [2022-07-22 11:17:37,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:37,696 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 734 transitions. [2022-07-22 11:17:37,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-22 11:17:37,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:37,698 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2022-07-22 11:17:37,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 11:17:37,698 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:37,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:37,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1678544663, now seen corresponding path program 1 times [2022-07-22 11:17:37,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:37,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216638770] [2022-07-22 11:17:37,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:37,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-22 11:17:37,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:37,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216638770] [2022-07-22 11:17:37,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216638770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:37,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:37,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 11:17:37,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669079746] [2022-07-22 11:17:37,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:37,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 11:17:37,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:37,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 11:17:37,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:37,792 INFO L87 Difference]: Start difference. First operand 474 states and 734 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:39,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:40,826 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 [] [2022-07-22 11:17:41,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:41,125 INFO L93 Difference]: Finished difference Result 937 states and 1456 transitions. [2022-07-22 11:17:41,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 11:17:41,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-07-22 11:17:41,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:41,126 INFO L225 Difference]: With dead ends: 937 [2022-07-22 11:17:41,126 INFO L226 Difference]: Without dead ends: 484 [2022-07-22 11:17:41,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:17:41,127 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 146 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:41,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 344 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-22 11:17:41,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-07-22 11:17:41,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 483. [2022-07-22 11:17:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.545643153526971) internal successors, (745), 482 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 745 transitions. [2022-07-22 11:17:41,135 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 745 transitions. Word has length 132 [2022-07-22 11:17:41,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:41,135 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 745 transitions. [2022-07-22 11:17:41,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:41,135 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 745 transitions. [2022-07-22 11:17:41,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-22 11:17:41,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:41,136 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2022-07-22 11:17:41,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 11:17:41,136 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:41,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:41,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1081930242, now seen corresponding path program 1 times [2022-07-22 11:17:41,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:41,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970977578] [2022-07-22 11:17:41,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:41,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 11:17:41,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:41,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970977578] [2022-07-22 11:17:41,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970977578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:41,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:41,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:41,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992830669] [2022-07-22 11:17:41,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:41,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:41,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:41,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:41,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:41,239 INFO L87 Difference]: Start difference. First operand 483 states and 745 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:43,251 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 [] [2022-07-22 11:17:43,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:43,511 INFO L93 Difference]: Finished difference Result 1005 states and 1548 transitions. [2022-07-22 11:17:43,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:43,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-07-22 11:17:43,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:43,513 INFO L225 Difference]: With dead ends: 1005 [2022-07-22 11:17:43,514 INFO L226 Difference]: Without dead ends: 543 [2022-07-22 11:17:43,514 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 [2022-07-22 11:17:43,515 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 130 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:43,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 364 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 241 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 11:17:43,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-07-22 11:17:43,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 483. [2022-07-22 11:17:43,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.5269709543568464) internal successors, (736), 482 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:43,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 736 transitions. [2022-07-22 11:17:43,536 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 736 transitions. Word has length 133 [2022-07-22 11:17:43,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:43,536 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 736 transitions. [2022-07-22 11:17:43,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:43,537 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 736 transitions. [2022-07-22 11:17:43,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-22 11:17:43,538 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:43,538 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] [2022-07-22 11:17:43,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 11:17:43,538 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:43,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:43,539 INFO L85 PathProgramCache]: Analyzing trace with hash 923128465, now seen corresponding path program 1 times [2022-07-22 11:17:43,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:43,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663991467] [2022-07-22 11:17:43,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:43,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 11:17:43,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:43,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663991467] [2022-07-22 11:17:43,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663991467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:43,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:43,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:43,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737982035] [2022-07-22 11:17:43,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:43,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:43,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:43,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:43,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:43,670 INFO L87 Difference]: Start difference. First operand 483 states and 736 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:44,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:44,413 INFO L93 Difference]: Finished difference Result 979 states and 1493 transitions. [2022-07-22 11:17:44,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:44,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 139 [2022-07-22 11:17:44,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:44,415 INFO L225 Difference]: With dead ends: 979 [2022-07-22 11:17:44,415 INFO L226 Difference]: Without dead ends: 517 [2022-07-22 11:17:44,415 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 [2022-07-22 11:17:44,417 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 64 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:44,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 473 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:17:44,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-07-22 11:17:44,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 483. [2022-07-22 11:17:44,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.5248962655601659) internal successors, (735), 482 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:44,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 735 transitions. [2022-07-22 11:17:44,425 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 735 transitions. Word has length 139 [2022-07-22 11:17:44,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:44,425 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 735 transitions. [2022-07-22 11:17:44,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:44,425 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 735 transitions. [2022-07-22 11:17:44,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-22 11:17:44,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:44,426 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] [2022-07-22 11:17:44,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 11:17:44,427 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:44,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:44,427 INFO L85 PathProgramCache]: Analyzing trace with hash 178755555, now seen corresponding path program 1 times [2022-07-22 11:17:44,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:44,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902220128] [2022-07-22 11:17:44,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:44,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 11:17:44,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:44,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902220128] [2022-07-22 11:17:44,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902220128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:44,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:44,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:44,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727879421] [2022-07-22 11:17:44,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:44,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:44,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:44,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:44,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:44,506 INFO L87 Difference]: Start difference. First operand 483 states and 735 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:45,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:45,150 INFO L93 Difference]: Finished difference Result 1005 states and 1528 transitions. [2022-07-22 11:17:45,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:45,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 140 [2022-07-22 11:17:45,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:45,152 INFO L225 Difference]: With dead ends: 1005 [2022-07-22 11:17:45,152 INFO L226 Difference]: Without dead ends: 543 [2022-07-22 11:17:45,153 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 [2022-07-22 11:17:45,153 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 117 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:45,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 374 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:17:45,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-07-22 11:17:45,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 483. [2022-07-22 11:17:45,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.5103734439834025) internal successors, (728), 482 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 728 transitions. [2022-07-22 11:17:45,162 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 728 transitions. Word has length 140 [2022-07-22 11:17:45,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:45,162 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 728 transitions. [2022-07-22 11:17:45,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:45,162 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 728 transitions. [2022-07-22 11:17:45,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-22 11:17:45,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:45,163 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] [2022-07-22 11:17:45,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 11:17:45,163 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:45,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:45,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1310833163, now seen corresponding path program 1 times [2022-07-22 11:17:45,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:45,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183568584] [2022-07-22 11:17:45,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:45,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 11:17:45,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:45,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183568584] [2022-07-22 11:17:45,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183568584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:45,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:45,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:45,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816227864] [2022-07-22 11:17:45,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:45,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:45,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:45,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:45,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:45,276 INFO L87 Difference]: Start difference. First operand 483 states and 728 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:46,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:46,251 INFO L93 Difference]: Finished difference Result 977 states and 1475 transitions. [2022-07-22 11:17:46,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:46,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 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 140 [2022-07-22 11:17:46,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:46,253 INFO L225 Difference]: With dead ends: 977 [2022-07-22 11:17:46,253 INFO L226 Difference]: Without dead ends: 515 [2022-07-22 11:17:46,253 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 [2022-07-22 11:17:46,254 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 60 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 485 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 [2022-07-22 11:17:46,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 485 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 11:17:46,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-07-22 11:17:46,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 483. [2022-07-22 11:17:46,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.508298755186722) internal successors, (727), 482 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:46,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 727 transitions. [2022-07-22 11:17:46,265 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 727 transitions. Word has length 140 [2022-07-22 11:17:46,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:46,265 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 727 transitions. [2022-07-22 11:17:46,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:46,266 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 727 transitions. [2022-07-22 11:17:46,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-22 11:17:46,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:46,267 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] [2022-07-22 11:17:46,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 11:17:46,267 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:46,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:46,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1779826661, now seen corresponding path program 1 times [2022-07-22 11:17:46,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:46,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702025987] [2022-07-22 11:17:46,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:46,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-22 11:17:46,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:46,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702025987] [2022-07-22 11:17:46,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702025987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:46,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:46,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:46,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738790512] [2022-07-22 11:17:46,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:46,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:46,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:46,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:46,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:46,372 INFO L87 Difference]: Start difference. First operand 483 states and 727 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:46,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:46,743 INFO L93 Difference]: Finished difference Result 984 states and 1485 transitions. [2022-07-22 11:17:46,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:46,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 140 [2022-07-22 11:17:46,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:46,745 INFO L225 Difference]: With dead ends: 984 [2022-07-22 11:17:46,745 INFO L226 Difference]: Without dead ends: 522 [2022-07-22 11:17:46,745 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 [2022-07-22 11:17:46,746 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 27 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:46,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 561 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 11:17:46,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-07-22 11:17:46,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 509. [2022-07-22 11:17:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 1.5039370078740157) internal successors, (764), 508 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 764 transitions. [2022-07-22 11:17:46,757 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 764 transitions. Word has length 140 [2022-07-22 11:17:46,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:46,757 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 764 transitions. [2022-07-22 11:17:46,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:46,757 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 764 transitions. [2022-07-22 11:17:46,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-22 11:17:46,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:46,758 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, 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] [2022-07-22 11:17:46,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 11:17:46,759 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:46,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:46,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2138352260, now seen corresponding path program 1 times [2022-07-22 11:17:46,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:46,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546451476] [2022-07-22 11:17:46,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:46,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 11:17:46,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:46,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546451476] [2022-07-22 11:17:46,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546451476] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:46,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:46,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:46,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142545198] [2022-07-22 11:17:46,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:46,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:46,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:46,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:46,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:46,838 INFO L87 Difference]: Start difference. First operand 509 states and 764 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) [2022-07-22 11:17:48,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:48,001 INFO L93 Difference]: Finished difference Result 1099 states and 1651 transitions. [2022-07-22 11:17:48,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:48,001 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 [2022-07-22 11:17:48,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:48,002 INFO L225 Difference]: With dead ends: 1099 [2022-07-22 11:17:48,003 INFO L226 Difference]: Without dead ends: 611 [2022-07-22 11:17:48,003 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 [2022-07-22 11:17:48,004 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 113 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:48,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 364 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 11:17:48,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-07-22 11:17:48,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 537. [2022-07-22 11:17:48,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.4906716417910448) internal successors, (799), 536 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:48,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 799 transitions. [2022-07-22 11:17:48,012 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 799 transitions. Word has length 142 [2022-07-22 11:17:48,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:48,012 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 799 transitions. [2022-07-22 11:17:48,012 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) [2022-07-22 11:17:48,012 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 799 transitions. [2022-07-22 11:17:48,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-22 11:17:48,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:48,013 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, 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] [2022-07-22 11:17:48,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 11:17:48,014 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:48,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:48,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1346533418, now seen corresponding path program 1 times [2022-07-22 11:17:48,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:48,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897785164] [2022-07-22 11:17:48,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:48,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:48,106 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 11:17:48,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:48,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897785164] [2022-07-22 11:17:48,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897785164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:48,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:48,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:48,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962168504] [2022-07-22 11:17:48,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:48,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:48,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:48,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:48,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:48,108 INFO L87 Difference]: Start difference. First operand 537 states and 799 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) [2022-07-22 11:17:48,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:48,860 INFO L93 Difference]: Finished difference Result 1077 states and 1604 transitions. [2022-07-22 11:17:48,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:48,860 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 [2022-07-22 11:17:48,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:48,862 INFO L225 Difference]: With dead ends: 1077 [2022-07-22 11:17:48,862 INFO L226 Difference]: Without dead ends: 561 [2022-07-22 11:17:48,863 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 [2022-07-22 11:17:48,863 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 51 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:48,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 503 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:17:48,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-07-22 11:17:48,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 537. [2022-07-22 11:17:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.4888059701492538) internal successors, (798), 536 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 798 transitions. [2022-07-22 11:17:48,872 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 798 transitions. Word has length 143 [2022-07-22 11:17:48,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:48,872 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 798 transitions. [2022-07-22 11:17:48,872 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) [2022-07-22 11:17:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 798 transitions. [2022-07-22 11:17:48,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 11:17:48,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:48,873 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, 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] [2022-07-22 11:17:48,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 11:17:48,874 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:48,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:48,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1625865976, now seen corresponding path program 1 times [2022-07-22 11:17:48,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:48,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464247343] [2022-07-22 11:17:48,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:48,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 11:17:48,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:48,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464247343] [2022-07-22 11:17:48,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464247343] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:48,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:48,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:48,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301369162] [2022-07-22 11:17:48,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:48,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:48,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:48,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:48,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:48,957 INFO L87 Difference]: Start difference. First operand 537 states and 798 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:50,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:50,598 INFO L93 Difference]: Finished difference Result 1077 states and 1602 transitions. [2022-07-22 11:17:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:50,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 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 [2022-07-22 11:17:50,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:50,600 INFO L225 Difference]: With dead ends: 1077 [2022-07-22 11:17:50,600 INFO L226 Difference]: Without dead ends: 561 [2022-07-22 11:17:50,600 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 [2022-07-22 11:17:50,601 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 53 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:50,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 503 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 11:17:50,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-07-22 11:17:50,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 537. [2022-07-22 11:17:50,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.4869402985074627) internal successors, (797), 536 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:50,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 797 transitions. [2022-07-22 11:17:50,609 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 797 transitions. Word has length 146 [2022-07-22 11:17:50,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:50,610 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 797 transitions. [2022-07-22 11:17:50,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:50,610 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 797 transitions. [2022-07-22 11:17:50,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-22 11:17:50,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:50,611 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, 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] [2022-07-22 11:17:50,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 11:17:50,611 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:50,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:50,612 INFO L85 PathProgramCache]: Analyzing trace with hash -610410242, now seen corresponding path program 1 times [2022-07-22 11:17:50,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:50,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51684317] [2022-07-22 11:17:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:50,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:50,700 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 11:17:50,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:50,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51684317] [2022-07-22 11:17:50,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51684317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:50,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:50,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:50,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558352651] [2022-07-22 11:17:50,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:50,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:50,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:50,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:50,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:50,702 INFO L87 Difference]: Start difference. First operand 537 states and 797 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) [2022-07-22 11:17:51,834 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:52,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:52,083 INFO L93 Difference]: Finished difference Result 1113 states and 1652 transitions. [2022-07-22 11:17:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:52,084 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 147 [2022-07-22 11:17:52,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:52,085 INFO L225 Difference]: With dead ends: 1113 [2022-07-22 11:17:52,085 INFO L226 Difference]: Without dead ends: 597 [2022-07-22 11:17:52,086 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 [2022-07-22 11:17:52,086 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 114 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:52,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 344 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 11:17:52,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2022-07-22 11:17:52,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 537. [2022-07-22 11:17:52,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.4720149253731343) internal successors, (789), 536 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:52,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 789 transitions. [2022-07-22 11:17:52,094 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 789 transitions. Word has length 147 [2022-07-22 11:17:52,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:52,094 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 789 transitions. [2022-07-22 11:17:52,094 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) [2022-07-22 11:17:52,094 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 789 transitions. [2022-07-22 11:17:52,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-22 11:17:52,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:52,095 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, 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] [2022-07-22 11:17:52,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 11:17:52,096 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:52,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash 975125816, now seen corresponding path program 1 times [2022-07-22 11:17:52,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:52,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411260777] [2022-07-22 11:17:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:52,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:52,182 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 11:17:52,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:52,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411260777] [2022-07-22 11:17:52,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411260777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:52,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:52,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:52,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532366890] [2022-07-22 11:17:52,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:52,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:52,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:52,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:52,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:52,184 INFO L87 Difference]: Start difference. First operand 537 states and 789 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:52,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:52,705 INFO L93 Difference]: Finished difference Result 1075 states and 1581 transitions. [2022-07-22 11:17:52,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:52,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 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 149 [2022-07-22 11:17:52,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:52,707 INFO L225 Difference]: With dead ends: 1075 [2022-07-22 11:17:52,707 INFO L226 Difference]: Without dead ends: 559 [2022-07-22 11:17:52,708 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 [2022-07-22 11:17:52,708 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 41 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:52,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 509 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:17:52,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-07-22 11:17:52,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 537. [2022-07-22 11:17:52,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.4701492537313432) internal successors, (788), 536 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:52,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 788 transitions. [2022-07-22 11:17:52,716 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 788 transitions. Word has length 149 [2022-07-22 11:17:52,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:52,716 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 788 transitions. [2022-07-22 11:17:52,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:52,716 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 788 transitions. [2022-07-22 11:17:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-22 11:17:52,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:52,717 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, 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] [2022-07-22 11:17:52,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-22 11:17:52,718 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:52,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:52,718 INFO L85 PathProgramCache]: Analyzing trace with hash -6678238, now seen corresponding path program 1 times [2022-07-22 11:17:52,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:52,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559806407] [2022-07-22 11:17:52,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:52,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 11:17:52,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:52,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559806407] [2022-07-22 11:17:52,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559806407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:52,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:52,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:52,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000106417] [2022-07-22 11:17:52,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:52,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:52,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:52,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:52,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:52,793 INFO L87 Difference]: Start difference. First operand 537 states and 788 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) [2022-07-22 11:17:54,033 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:54,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:54,311 INFO L93 Difference]: Finished difference Result 1155 states and 1698 transitions. [2022-07-22 11:17:54,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:54,311 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 149 [2022-07-22 11:17:54,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:54,312 INFO L225 Difference]: With dead ends: 1155 [2022-07-22 11:17:54,312 INFO L226 Difference]: Without dead ends: 639 [2022-07-22 11:17:54,313 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 [2022-07-22 11:17:54,313 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 107 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:54,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 344 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 11:17:54,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-07-22 11:17:54,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 570. [2022-07-22 11:17:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 1.4639718804920914) internal successors, (833), 569 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 833 transitions. [2022-07-22 11:17:54,324 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 833 transitions. Word has length 149 [2022-07-22 11:17:54,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:54,325 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 833 transitions. [2022-07-22 11:17:54,325 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) [2022-07-22 11:17:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 833 transitions. [2022-07-22 11:17:54,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-22 11:17:54,326 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:54,326 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, 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] [2022-07-22 11:17:54,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-22 11:17:54,326 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:54,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:54,326 INFO L85 PathProgramCache]: Analyzing trace with hash 672787457, now seen corresponding path program 1 times [2022-07-22 11:17:54,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:54,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053648142] [2022-07-22 11:17:54,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:54,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:54,412 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 11:17:54,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:54,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053648142] [2022-07-22 11:17:54,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053648142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:54,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:54,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:54,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77396281] [2022-07-22 11:17:54,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:54,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:54,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:54,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:54,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:54,415 INFO L87 Difference]: Start difference. First operand 570 states and 833 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:55,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:56,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:56,117 INFO L93 Difference]: Finished difference Result 1179 states and 1724 transitions. [2022-07-22 11:17:56,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:56,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 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 150 [2022-07-22 11:17:56,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:56,120 INFO L225 Difference]: With dead ends: 1179 [2022-07-22 11:17:56,120 INFO L226 Difference]: Without dead ends: 630 [2022-07-22 11:17:56,120 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 [2022-07-22 11:17:56,121 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 106 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:56,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 344 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 11:17:56,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-07-22 11:17:56,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 570. [2022-07-22 11:17:56,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 1.4551845342706502) internal successors, (828), 569 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:56,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 828 transitions. [2022-07-22 11:17:56,131 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 828 transitions. Word has length 150 [2022-07-22 11:17:56,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:56,131 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 828 transitions. [2022-07-22 11:17:56,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:56,131 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 828 transitions. [2022-07-22 11:17:56,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-22 11:17:56,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:56,132 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, 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] [2022-07-22 11:17:56,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-22 11:17:56,132 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:56,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:56,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1350973257, now seen corresponding path program 1 times [2022-07-22 11:17:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:56,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668451631] [2022-07-22 11:17:56,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:56,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 11:17:56,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:56,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668451631] [2022-07-22 11:17:56,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668451631] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:56,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:56,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:56,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666783684] [2022-07-22 11:17:56,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:56,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:56,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:56,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:56,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:56,231 INFO L87 Difference]: Start difference. First operand 570 states and 828 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 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) [2022-07-22 11:17:57,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:58,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:58,036 INFO L93 Difference]: Finished difference Result 1179 states and 1714 transitions. [2022-07-22 11:17:58,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:58,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 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 150 [2022-07-22 11:17:58,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:58,038 INFO L225 Difference]: With dead ends: 1179 [2022-07-22 11:17:58,038 INFO L226 Difference]: Without dead ends: 630 [2022-07-22 11:17:58,039 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 [2022-07-22 11:17:58,039 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 103 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:58,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 344 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 11:17:58,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-07-22 11:17:58,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 570. [2022-07-22 11:17:58,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 1.4463971880492092) internal successors, (823), 569 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:58,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 823 transitions. [2022-07-22 11:17:58,049 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 823 transitions. Word has length 150 [2022-07-22 11:17:58,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:58,049 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 823 transitions. [2022-07-22 11:17:58,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 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) [2022-07-22 11:17:58,049 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 823 transitions. [2022-07-22 11:17:58,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-22 11:17:58,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:58,050 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, 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] [2022-07-22 11:17:58,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-22 11:17:58,051 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:58,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:58,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1658435944, now seen corresponding path program 1 times [2022-07-22 11:17:58,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:58,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226030991] [2022-07-22 11:17:58,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:58,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-22 11:17:58,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:58,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226030991] [2022-07-22 11:17:58,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226030991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:58,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:58,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:58,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529730888] [2022-07-22 11:17:58,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:58,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:58,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:58,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:58,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:58,165 INFO L87 Difference]: Start difference. First operand 570 states and 823 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:59,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:59,121 INFO L93 Difference]: Finished difference Result 1179 states and 1704 transitions. [2022-07-22 11:17:59,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:59,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 159 [2022-07-22 11:17:59,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:59,124 INFO L225 Difference]: With dead ends: 1179 [2022-07-22 11:17:59,124 INFO L226 Difference]: Without dead ends: 630 [2022-07-22 11:17:59,124 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 [2022-07-22 11:17:59,130 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 99 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:59,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 344 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 11:17:59,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-07-22 11:17:59,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 567. [2022-07-22 11:17:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 1.4434628975265018) internal successors, (817), 566 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 817 transitions. [2022-07-22 11:17:59,148 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 817 transitions. Word has length 159 [2022-07-22 11:17:59,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:59,148 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 817 transitions. [2022-07-22 11:17:59,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:59,148 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 817 transitions. [2022-07-22 11:17:59,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 11:17:59,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:59,149 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, 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] [2022-07-22 11:17:59,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-22 11:17:59,150 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:59,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:59,150 INFO L85 PathProgramCache]: Analyzing trace with hash 153715343, now seen corresponding path program 1 times [2022-07-22 11:17:59,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:59,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171224570] [2022-07-22 11:17:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:59,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-22 11:17:59,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:59,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171224570] [2022-07-22 11:17:59,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171224570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:59,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:59,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:17:59,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33735225] [2022-07-22 11:17:59,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:59,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:17:59,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:59,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:17:59,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:17:59,231 INFO L87 Difference]: Start difference. First operand 567 states and 817 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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) [2022-07-22 11:17:59,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:59,265 INFO L93 Difference]: Finished difference Result 1652 states and 2393 transitions. [2022-07-22 11:17:59,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:17:59,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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 167 [2022-07-22 11:17:59,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:59,268 INFO L225 Difference]: With dead ends: 1652 [2022-07-22 11:17:59,268 INFO L226 Difference]: Without dead ends: 1106 [2022-07-22 11:17:59,268 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 [2022-07-22 11:17:59,269 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 139 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:59,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 559 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:17:59,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2022-07-22 11:17:59,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1106. [2022-07-22 11:17:59,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 1.4425339366515837) internal successors, (1594), 1105 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:59,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1594 transitions. [2022-07-22 11:17:59,313 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1594 transitions. Word has length 167 [2022-07-22 11:17:59,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:59,313 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1594 transitions. [2022-07-22 11:17:59,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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) [2022-07-22 11:17:59,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1594 transitions. [2022-07-22 11:17:59,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 11:17:59,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:59,315 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, 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] [2022-07-22 11:17:59,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-22 11:17:59,315 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:59,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:59,315 INFO L85 PathProgramCache]: Analyzing trace with hash 493144206, now seen corresponding path program 1 times [2022-07-22 11:17:59,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:59,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623934605] [2022-07-22 11:17:59,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:59,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-22 11:17:59,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:59,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623934605] [2022-07-22 11:17:59,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623934605] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:59,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:59,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:17:59,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83621290] [2022-07-22 11:17:59,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:59,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:17:59,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:59,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:17:59,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:17:59,392 INFO L87 Difference]: Start difference. First operand 1106 states and 1594 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) [2022-07-22 11:17:59,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:59,431 INFO L93 Difference]: Finished difference Result 2698 states and 3899 transitions. [2022-07-22 11:17:59,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:17:59,432 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 168 [2022-07-22 11:17:59,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:59,435 INFO L225 Difference]: With dead ends: 2698 [2022-07-22 11:17:59,435 INFO L226 Difference]: Without dead ends: 1613 [2022-07-22 11:17:59,436 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 [2022-07-22 11:17:59,436 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 136 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:59,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 492 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:17:59,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2022-07-22 11:17:59,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1613. [2022-07-22 11:17:59,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 1.4410669975186103) internal successors, (2323), 1612 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:59,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2323 transitions. [2022-07-22 11:17:59,460 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2323 transitions. Word has length 168 [2022-07-22 11:17:59,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:59,461 INFO L495 AbstractCegarLoop]: Abstraction has 1613 states and 2323 transitions. [2022-07-22 11:17:59,461 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) [2022-07-22 11:17:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2323 transitions. [2022-07-22 11:17:59,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-22 11:17:59,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:59,463 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, 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] [2022-07-22 11:17:59,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-22 11:17:59,463 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:59,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:59,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1716174966, now seen corresponding path program 1 times [2022-07-22 11:17:59,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:59,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605498224] [2022-07-22 11:17:59,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:59,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:59,581 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-22 11:17:59,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:59,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605498224] [2022-07-22 11:17:59,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605498224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:59,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:59,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:17:59,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400843172] [2022-07-22 11:17:59,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:59,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:17:59,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:59,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:17:59,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:17:59,585 INFO L87 Difference]: Start difference. First operand 1613 states and 2323 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:59,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:59,635 INFO L93 Difference]: Finished difference Result 3703 states and 5347 transitions. [2022-07-22 11:17:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:17:59,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 169 [2022-07-22 11:17:59,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:59,642 INFO L225 Difference]: With dead ends: 3703 [2022-07-22 11:17:59,642 INFO L226 Difference]: Without dead ends: 2111 [2022-07-22 11:17:59,646 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 [2022-07-22 11:17:59,646 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 138 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:59,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 508 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:17:59,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2022-07-22 11:17:59,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 2111. [2022-07-22 11:17:59,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 2110 states have (on average 1.4417061611374407) internal successors, (3042), 2110 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:59,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 3042 transitions. [2022-07-22 11:17:59,680 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 3042 transitions. Word has length 169 [2022-07-22 11:17:59,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:59,680 INFO L495 AbstractCegarLoop]: Abstraction has 2111 states and 3042 transitions. [2022-07-22 11:17:59,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:59,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 3042 transitions. [2022-07-22 11:17:59,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-22 11:17:59,682 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:59,683 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, 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] [2022-07-22 11:17:59,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-22 11:17:59,683 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:59,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1994020680, now seen corresponding path program 1 times [2022-07-22 11:17:59,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:59,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069699548] [2022-07-22 11:17:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:59,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-22 11:17:59,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:59,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069699548] [2022-07-22 11:17:59,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069699548] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:59,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:59,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:17:59,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637928561] [2022-07-22 11:17:59,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:59,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:17:59,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:59,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:17:59,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:17:59,787 INFO L87 Difference]: Start difference. First operand 2111 states and 3042 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:59,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:59,832 INFO L93 Difference]: Finished difference Result 4228 states and 6096 transitions. [2022-07-22 11:17:59,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:17:59,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 169 [2022-07-22 11:17:59,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:59,837 INFO L225 Difference]: With dead ends: 4228 [2022-07-22 11:17:59,837 INFO L226 Difference]: Without dead ends: 2138 [2022-07-22 11:17:59,839 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 [2022-07-22 11:17:59,839 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:59,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 406 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:17:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2022-07-22 11:17:59,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2138. [2022-07-22 11:17:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 2137 states have (on average 1.439868975198877) internal successors, (3077), 2137 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 3077 transitions. [2022-07-22 11:17:59,877 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 3077 transitions. Word has length 169 [2022-07-22 11:17:59,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:59,877 INFO L495 AbstractCegarLoop]: Abstraction has 2138 states and 3077 transitions. [2022-07-22 11:17:59,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 3077 transitions. [2022-07-22 11:17:59,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-22 11:17:59,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:59,879 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, 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] [2022-07-22 11:17:59,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-22 11:17:59,880 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:59,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:59,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1729373190, now seen corresponding path program 1 times [2022-07-22 11:17:59,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:59,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230092546] [2022-07-22 11:17:59,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:59,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-22 11:17:59,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:59,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230092546] [2022-07-22 11:17:59,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230092546] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:59,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:59,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:17:59,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265205501] [2022-07-22 11:17:59,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:59,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:17:59,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:59,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:17:59,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:17:59,974 INFO L87 Difference]: Start difference. First operand 2138 states and 3077 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:00,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:18:00,020 INFO L93 Difference]: Finished difference Result 4257 states and 6132 transitions. [2022-07-22 11:18:00,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:18:00,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 169 [2022-07-22 11:18:00,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:18:00,036 INFO L225 Difference]: With dead ends: 4257 [2022-07-22 11:18:00,036 INFO L226 Difference]: Without dead ends: 2140 [2022-07-22 11:18:00,038 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 [2022-07-22 11:18:00,039 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:18:00,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 385 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:18:00,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2022-07-22 11:18:00,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 2140. [2022-07-22 11:18:00,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2139 states have (on average 1.439457690509584) internal successors, (3079), 2139 states have internal predecessors, (3079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:00,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 3079 transitions. [2022-07-22 11:18:00,080 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 3079 transitions. Word has length 169 [2022-07-22 11:18:00,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:18:00,081 INFO L495 AbstractCegarLoop]: Abstraction has 2140 states and 3079 transitions. [2022-07-22 11:18:00,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:00,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 3079 transitions. [2022-07-22 11:18:00,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-07-22 11:18:00,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:18:00,085 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 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] [2022-07-22 11:18:00,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-22 11:18:00,085 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:18:00,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:18:00,085 INFO L85 PathProgramCache]: Analyzing trace with hash 534257747, now seen corresponding path program 1 times [2022-07-22 11:18:00,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:18:00,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259554659] [2022-07-22 11:18:00,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:00,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:18:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-22 11:18:00,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:18:00,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259554659] [2022-07-22 11:18:00,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259554659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:18:00,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:18:00,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:18:00,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110557386] [2022-07-22 11:18:00,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:18:00,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:18:00,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:18:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:18:00,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:18:00,208 INFO L87 Difference]: Start difference. First operand 2140 states and 3079 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 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) [2022-07-22 11:18:01,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:18:01,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:18:01,802 INFO L93 Difference]: Finished difference Result 4530 states and 6506 transitions. [2022-07-22 11:18:01,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:18:01,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 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 262 [2022-07-22 11:18:01,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:18:01,806 INFO L225 Difference]: With dead ends: 4530 [2022-07-22 11:18:01,806 INFO L226 Difference]: Without dead ends: 2413 [2022-07-22 11:18:01,808 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 [2022-07-22 11:18:01,810 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 55 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:18:01,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 583 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 11:18:01,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2022-07-22 11:18:01,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2260. [2022-07-22 11:18:01,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2260 states, 2259 states have (on average 1.4391323594510845) internal successors, (3251), 2259 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:01,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 3251 transitions. [2022-07-22 11:18:01,850 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 3251 transitions. Word has length 262 [2022-07-22 11:18:01,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:18:01,850 INFO L495 AbstractCegarLoop]: Abstraction has 2260 states and 3251 transitions. [2022-07-22 11:18:01,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 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) [2022-07-22 11:18:01,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 3251 transitions. [2022-07-22 11:18:01,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-07-22 11:18:01,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:18:01,853 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 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] [2022-07-22 11:18:01,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-22 11:18:01,854 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:18:01,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:18:01,854 INFO L85 PathProgramCache]: Analyzing trace with hash 2140742793, now seen corresponding path program 1 times [2022-07-22 11:18:01,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:18:01,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247042676] [2022-07-22 11:18:01,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:01,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:18:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-22 11:18:01,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:18:01,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247042676] [2022-07-22 11:18:01,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247042676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:18:01,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:18:01,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:18:01,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983270194] [2022-07-22 11:18:01,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:18:01,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:18:01,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:18:01,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:18:01,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:18:01,996 INFO L87 Difference]: Start difference. First operand 2260 states and 3251 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:03,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:18:03,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:18:03,676 INFO L93 Difference]: Finished difference Result 4642 states and 6666 transitions. [2022-07-22 11:18:03,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:18:03,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 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 263 [2022-07-22 11:18:03,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:18:03,683 INFO L225 Difference]: With dead ends: 4642 [2022-07-22 11:18:03,683 INFO L226 Difference]: Without dead ends: 2405 [2022-07-22 11:18:03,685 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 [2022-07-22 11:18:03,686 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 52 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:18:03,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 579 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 11:18:03,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2022-07-22 11:18:03,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 2264. [2022-07-22 11:18:03,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2264 states, 2263 states have (on average 1.4383561643835616) internal successors, (3255), 2263 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:03,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 3255 transitions. [2022-07-22 11:18:03,724 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 3255 transitions. Word has length 263 [2022-07-22 11:18:03,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:18:03,724 INFO L495 AbstractCegarLoop]: Abstraction has 2264 states and 3255 transitions. [2022-07-22 11:18:03,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:03,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 3255 transitions. [2022-07-22 11:18:03,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-22 11:18:03,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:18:03,728 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2022-07-22 11:18:03,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-22 11:18:03,728 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:18:03,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:18:03,729 INFO L85 PathProgramCache]: Analyzing trace with hash -942402324, now seen corresponding path program 1 times [2022-07-22 11:18:03,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:18:03,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782729814] [2022-07-22 11:18:03,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:03,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:18:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 389 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-22 11:18:03,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:18:03,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782729814] [2022-07-22 11:18:03,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782729814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:18:03,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:18:03,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:18:03,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575301605] [2022-07-22 11:18:03,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:18:03,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:18:03,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:18:03,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:18:03,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:18:03,887 INFO L87 Difference]: Start difference. First operand 2264 states and 3255 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:04,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:18:04,454 INFO L93 Difference]: Finished difference Result 4614 states and 6614 transitions. [2022-07-22 11:18:04,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:18:04,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 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 266 [2022-07-22 11:18:04,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:18:04,458 INFO L225 Difference]: With dead ends: 4614 [2022-07-22 11:18:04,458 INFO L226 Difference]: Without dead ends: 2373 [2022-07-22 11:18:04,459 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 [2022-07-22 11:18:04,460 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 44 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:18:04,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 569 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:18:04,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2022-07-22 11:18:04,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2264. [2022-07-22 11:18:04,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2264 states, 2263 states have (on average 1.4365885992045957) internal successors, (3251), 2263 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:04,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 3251 transitions. [2022-07-22 11:18:04,495 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 3251 transitions. Word has length 266 [2022-07-22 11:18:04,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:18:04,495 INFO L495 AbstractCegarLoop]: Abstraction has 2264 states and 3251 transitions. [2022-07-22 11:18:04,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:04,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 3251 transitions. [2022-07-22 11:18:04,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-07-22 11:18:04,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:18:04,498 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-07-22 11:18:04,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-22 11:18:04,499 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:18:04,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:18:04,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1669644410, now seen corresponding path program 1 times [2022-07-22 11:18:04,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:18:04,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961493644] [2022-07-22 11:18:04,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:04,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:18:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:04,654 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-22 11:18:04,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:18:04,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961493644] [2022-07-22 11:18:04,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961493644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:18:04,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:18:04,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:18:04,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916847949] [2022-07-22 11:18:04,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:18:04,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:18:04,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:18:04,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:18:04,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:18:04,656 INFO L87 Difference]: Start difference. First operand 2264 states and 3251 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:05,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:18:05,057 INFO L93 Difference]: Finished difference Result 4606 states and 6598 transitions. [2022-07-22 11:18:05,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:18:05,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 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 [2022-07-22 11:18:05,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:18:05,061 INFO L225 Difference]: With dead ends: 4606 [2022-07-22 11:18:05,062 INFO L226 Difference]: Without dead ends: 2365 [2022-07-22 11:18:05,064 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 [2022-07-22 11:18:05,066 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 36 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:18:05,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 565 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 11:18:05,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2022-07-22 11:18:05,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2244. [2022-07-22 11:18:05,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 2243 states have (on average 1.4404814979937584) internal successors, (3231), 2243 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:05,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3231 transitions. [2022-07-22 11:18:05,106 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3231 transitions. Word has length 272 [2022-07-22 11:18:05,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:18:05,106 INFO L495 AbstractCegarLoop]: Abstraction has 2244 states and 3231 transitions. [2022-07-22 11:18:05,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:05,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3231 transitions. [2022-07-22 11:18:05,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-07-22 11:18:05,110 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:18:05,110 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 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] [2022-07-22 11:18:05,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-22 11:18:05,110 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:18:05,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:18:05,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1221317824, now seen corresponding path program 1 times [2022-07-22 11:18:05,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:18:05,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711556643] [2022-07-22 11:18:05,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:05,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:18:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-22 11:18:05,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:18:05,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711556643] [2022-07-22 11:18:05,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711556643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:18:05,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:18:05,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:18:05,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672708529] [2022-07-22 11:18:05,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:18:05,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:18:05,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:18:05,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:18:05,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:18:05,263 INFO L87 Difference]: Start difference. First operand 2244 states and 3231 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:05,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:18:05,701 INFO L93 Difference]: Finished difference Result 4550 states and 6554 transitions. [2022-07-22 11:18:05,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:18:05,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 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 290 [2022-07-22 11:18:05,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:18:05,705 INFO L225 Difference]: With dead ends: 4550 [2022-07-22 11:18:05,705 INFO L226 Difference]: Without dead ends: 2329 [2022-07-22 11:18:05,707 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 [2022-07-22 11:18:05,707 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 37 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:18:05,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 570 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 11:18:05,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2022-07-22 11:18:05,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2244. [2022-07-22 11:18:05,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 2243 states have (on average 1.4386981720909495) internal successors, (3227), 2243 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:05,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3227 transitions. [2022-07-22 11:18:05,740 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3227 transitions. Word has length 290 [2022-07-22 11:18:05,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:18:05,740 INFO L495 AbstractCegarLoop]: Abstraction has 2244 states and 3227 transitions. [2022-07-22 11:18:05,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:05,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3227 transitions. [2022-07-22 11:18:05,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-07-22 11:18:05,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:18:05,743 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2022-07-22 11:18:05,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-22 11:18:05,743 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:18:05,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:18:05,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1549103668, now seen corresponding path program 1 times [2022-07-22 11:18:05,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:18:05,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815534150] [2022-07-22 11:18:05,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:05,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:18:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 474 proven. 106 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-22 11:18:05,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:18:05,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815534150] [2022-07-22 11:18:05,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815534150] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:18:05,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544756375] [2022-07-22 11:18:05,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:05,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:18:05,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:18:05,913 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) [2022-07-22 11:18:05,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 11:18:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:06,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-22 11:18:06,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:18:06,805 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-22 11:18:06,806 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 [2022-07-22 11:18:06,838 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 11:18:06,838 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 [2022-07-22 11:18:06,846 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 [2022-07-22 11:18:06,863 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-22 11:18:06,863 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 [2022-07-22 11:18:06,913 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 [2022-07-22 11:18:06,923 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 477 proven. 64 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-22 11:18:06,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:18:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2022-07-22 11:18:06,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544756375] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 11:18:06,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 11:18:06,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 9 [2022-07-22 11:18:06,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821566883] [2022-07-22 11:18:06,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:18:06,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:18:06,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:18:06,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:18:06,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 11:18:06,976 INFO L87 Difference]: Start difference. First operand 2244 states and 3227 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:08,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:18:08,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:18:08,594 INFO L93 Difference]: Finished difference Result 4755 states and 6797 transitions. [2022-07-22 11:18:08,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:18:08,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 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 292 [2022-07-22 11:18:08,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:18:08,598 INFO L225 Difference]: With dead ends: 4755 [2022-07-22 11:18:08,598 INFO L226 Difference]: Without dead ends: 2534 [2022-07-22 11:18:08,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 11:18:08,599 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 96 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:18:08,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 402 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 11:18:08,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2534 states. [2022-07-22 11:18:08,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2534 to 2304. [2022-07-22 11:18:08,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2304 states, 2303 states have (on average 1.4259661311333043) internal successors, (3284), 2303 states have internal predecessors, (3284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:08,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3284 transitions. [2022-07-22 11:18:08,636 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3284 transitions. Word has length 292 [2022-07-22 11:18:08,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:18:08,636 INFO L495 AbstractCegarLoop]: Abstraction has 2304 states and 3284 transitions. [2022-07-22 11:18:08,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:08,636 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3284 transitions. [2022-07-22 11:18:08,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-07-22 11:18:08,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:18:08,639 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2022-07-22 11:18:08,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 11:18:08,860 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,SelfDestructingSolverStorable48 [2022-07-22 11:18:08,861 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:18:08,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:18:08,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1978761974, now seen corresponding path program 1 times [2022-07-22 11:18:08,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:18:08,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037152388] [2022-07-22 11:18:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:08,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:18:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-07-22 11:18:09,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:18:09,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037152388] [2022-07-22 11:18:09,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037152388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:18:09,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:18:09,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 11:18:09,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717506430] [2022-07-22 11:18:09,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:18:09,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 11:18:09,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:18:09,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 11:18:09,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:18:09,150 INFO L87 Difference]: Start difference. First operand 2304 states and 3284 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 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) [2022-07-22 11:18:11,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:18:14,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:18:15,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:18:15,358 INFO L93 Difference]: Finished difference Result 6752 states and 9645 transitions. [2022-07-22 11:18:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 11:18:15,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 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 292 [2022-07-22 11:18:15,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:18:15,363 INFO L225 Difference]: With dead ends: 6752 [2022-07-22 11:18:15,363 INFO L226 Difference]: Without dead ends: 4471 [2022-07-22 11:18:15,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-07-22 11:18:15,365 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 194 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:18:15,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1230 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 941 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-07-22 11:18:15,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2022-07-22 11:18:15,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 4152. [2022-07-22 11:18:15,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4152 states, 4151 states have (on average 1.4459166465911828) internal successors, (6002), 4151 states have internal predecessors, (6002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:15,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 6002 transitions. [2022-07-22 11:18:15,433 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 6002 transitions. Word has length 292 [2022-07-22 11:18:15,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:18:15,434 INFO L495 AbstractCegarLoop]: Abstraction has 4152 states and 6002 transitions. [2022-07-22 11:18:15,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 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) [2022-07-22 11:18:15,434 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 6002 transitions. [2022-07-22 11:18:15,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-07-22 11:18:15,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:18:15,439 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2022-07-22 11:18:15,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-22 11:18:15,439 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:18:15,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:18:15,439 INFO L85 PathProgramCache]: Analyzing trace with hash -789789195, now seen corresponding path program 1 times [2022-07-22 11:18:15,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:18:15,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526013516] [2022-07-22 11:18:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:15,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:18:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:15,580 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 492 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-07-22 11:18:15,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:18:15,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526013516] [2022-07-22 11:18:15,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526013516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:18:15,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:18:15,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:18:15,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705570965] [2022-07-22 11:18:15,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:18:15,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:18:15,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:18:15,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:18:15,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:18:15,582 INFO L87 Difference]: Start difference. First operand 4152 states and 6002 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:17,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:18:17,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:18:17,371 INFO L93 Difference]: Finished difference Result 8403 states and 12119 transitions. [2022-07-22 11:18:17,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:18:17,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 293 [2022-07-22 11:18:17,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:18:17,377 INFO L225 Difference]: With dead ends: 8403 [2022-07-22 11:18:17,377 INFO L226 Difference]: Without dead ends: 4274 [2022-07-22 11:18:17,380 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 [2022-07-22 11:18:17,380 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 42 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:18:17,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 561 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 11:18:17,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2022-07-22 11:18:17,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 4148. [2022-07-22 11:18:17,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4147 states have (on average 1.444417651314203) internal successors, (5990), 4147 states have internal predecessors, (5990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:17,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 5990 transitions. [2022-07-22 11:18:17,447 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 5990 transitions. Word has length 293 [2022-07-22 11:18:17,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:18:17,448 INFO L495 AbstractCegarLoop]: Abstraction has 4148 states and 5990 transitions. [2022-07-22 11:18:17,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:17,448 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 5990 transitions. [2022-07-22 11:18:17,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-07-22 11:18:17,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:18:17,452 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2022-07-22 11:18:17,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-22 11:18:17,453 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:18:17,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:18:17,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1786575207, now seen corresponding path program 1 times [2022-07-22 11:18:17,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:18:17,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207037847] [2022-07-22 11:18:17,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:17,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:18:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2022-07-22 11:18:17,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:18:17,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207037847] [2022-07-22 11:18:17,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207037847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:18:17,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:18:17,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:18:17,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434536364] [2022-07-22 11:18:17,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:18:17,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:18:17,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:18:17,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:18:17,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:18:17,586 INFO L87 Difference]: Start difference. First operand 4148 states and 5990 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:18,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:18:18,465 INFO L93 Difference]: Finished difference Result 8391 states and 12091 transitions. [2022-07-22 11:18:18,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:18:18,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 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 293 [2022-07-22 11:18:18,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:18:18,472 INFO L225 Difference]: With dead ends: 8391 [2022-07-22 11:18:18,473 INFO L226 Difference]: Without dead ends: 4198 [2022-07-22 11:18:18,477 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 [2022-07-22 11:18:18,477 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 26 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:18:18,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 559 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 11:18:18,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2022-07-22 11:18:18,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 4108. [2022-07-22 11:18:18,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4108 states, 4107 states have (on average 1.4467981495008522) internal successors, (5942), 4107 states have internal predecessors, (5942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:18,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 5942 transitions. [2022-07-22 11:18:18,577 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 5942 transitions. Word has length 293 [2022-07-22 11:18:18,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:18:18,578 INFO L495 AbstractCegarLoop]: Abstraction has 4108 states and 5942 transitions. [2022-07-22 11:18:18,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:18,578 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 5942 transitions. [2022-07-22 11:18:18,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-07-22 11:18:18,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:18:18,584 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:18:18,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-22 11:18:18,585 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:18:18,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:18:18,585 INFO L85 PathProgramCache]: Analyzing trace with hash 765728480, now seen corresponding path program 1 times [2022-07-22 11:18:18,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:18:18,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144767633] [2022-07-22 11:18:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:18,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:18:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:18,746 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 547 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2022-07-22 11:18:18,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:18:18,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144767633] [2022-07-22 11:18:18,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144767633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:18:18,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:18:18,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:18:18,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396687632] [2022-07-22 11:18:18,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:18:18,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:18:18,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:18:18,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:18:18,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:18:18,748 INFO L87 Difference]: Start difference. First operand 4108 states and 5942 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 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) [2022-07-22 11:18:20,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:18:20,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:18:20,271 INFO L93 Difference]: Finished difference Result 8283 states and 11967 transitions. [2022-07-22 11:18:20,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:18:20,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 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 314 [2022-07-22 11:18:20,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:18:20,277 INFO L225 Difference]: With dead ends: 8283 [2022-07-22 11:18:20,277 INFO L226 Difference]: Without dead ends: 4198 [2022-07-22 11:18:20,280 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 [2022-07-22 11:18:20,281 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 27 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:18:20,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 557 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 11:18:20,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2022-07-22 11:18:20,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 4108. [2022-07-22 11:18:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4108 states, 4107 states have (on average 1.4448502556610665) internal successors, (5934), 4107 states have internal predecessors, (5934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:20,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 5934 transitions. [2022-07-22 11:18:20,444 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 5934 transitions. Word has length 314 [2022-07-22 11:18:20,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:18:20,444 INFO L495 AbstractCegarLoop]: Abstraction has 4108 states and 5934 transitions. [2022-07-22 11:18:20,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 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) [2022-07-22 11:18:20,444 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 5934 transitions. [2022-07-22 11:18:20,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-07-22 11:18:20,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:18:20,450 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:18:20,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-22 11:18:20,450 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:18:20,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:18:20,451 INFO L85 PathProgramCache]: Analyzing trace with hash 109235862, now seen corresponding path program 1 times [2022-07-22 11:18:20,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:18:20,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068764985] [2022-07-22 11:18:20,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:20,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:18:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 553 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2022-07-22 11:18:20,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:18:20,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068764985] [2022-07-22 11:18:20,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068764985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:18:20,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:18:20,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:18:20,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431098818] [2022-07-22 11:18:20,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:18:20,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:18:20,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:18:20,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:18:20,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:18:20,574 INFO L87 Difference]: Start difference. First operand 4108 states and 5934 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:21,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:18:21,276 INFO L93 Difference]: Finished difference Result 8251 states and 11909 transitions. [2022-07-22 11:18:21,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:18:21,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 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 315 [2022-07-22 11:18:21,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:18:21,283 INFO L225 Difference]: With dead ends: 8251 [2022-07-22 11:18:21,283 INFO L226 Difference]: Without dead ends: 4166 [2022-07-22 11:18:21,288 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 [2022-07-22 11:18:21,288 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 21 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:18:21,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 549 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:18:21,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2022-07-22 11:18:21,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 4108. [2022-07-22 11:18:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4108 states, 4107 states have (on average 1.4429023618212808) internal successors, (5926), 4107 states have internal predecessors, (5926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:21,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 5926 transitions. [2022-07-22 11:18:21,426 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 5926 transitions. Word has length 315 [2022-07-22 11:18:21,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:18:21,426 INFO L495 AbstractCegarLoop]: Abstraction has 4108 states and 5926 transitions. [2022-07-22 11:18:21,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:21,426 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 5926 transitions. [2022-07-22 11:18:21,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-07-22 11:18:21,431 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:18:21,432 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2022-07-22 11:18:21,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-22 11:18:21,432 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:18:21,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:18:21,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1142940541, now seen corresponding path program 1 times [2022-07-22 11:18:21,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:18:21,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283175287] [2022-07-22 11:18:21,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:21,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:18:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-07-22 11:18:21,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:18:21,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283175287] [2022-07-22 11:18:21,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283175287] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:18:21,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:18:21,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:18:21,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605541860] [2022-07-22 11:18:21,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:18:21,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:18:21,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:18:21,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:18:21,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:18:21,569 INFO L87 Difference]: Start difference. First operand 4108 states and 5926 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 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) [2022-07-22 11:18:22,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:18:22,640 INFO L93 Difference]: Finished difference Result 8219 states and 11853 transitions. [2022-07-22 11:18:22,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:18:22,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 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 316 [2022-07-22 11:18:22,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:18:22,646 INFO L225 Difference]: With dead ends: 8219 [2022-07-22 11:18:22,646 INFO L226 Difference]: Without dead ends: 4102 [2022-07-22 11:18:22,650 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 [2022-07-22 11:18:22,652 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 15 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:18:22,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 541 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 11:18:22,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2022-07-22 11:18:22,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 4076. [2022-07-22 11:18:22,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4076 states, 4075 states have (on average 1.4444171779141104) internal successors, (5886), 4075 states have internal predecessors, (5886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:22,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4076 states to 4076 states and 5886 transitions. [2022-07-22 11:18:22,765 INFO L78 Accepts]: Start accepts. Automaton has 4076 states and 5886 transitions. Word has length 316 [2022-07-22 11:18:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:18:22,766 INFO L495 AbstractCegarLoop]: Abstraction has 4076 states and 5886 transitions. [2022-07-22 11:18:22,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 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) [2022-07-22 11:18:22,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4076 states and 5886 transitions. [2022-07-22 11:18:22,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-07-22 11:18:22,772 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:18:22,772 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2022-07-22 11:18:22,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-22 11:18:22,772 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:18:22,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:18:22,773 INFO L85 PathProgramCache]: Analyzing trace with hash -848179772, now seen corresponding path program 1 times [2022-07-22 11:18:22,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:18:22,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011334745] [2022-07-22 11:18:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:22,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:18:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:23,117 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 905 trivial. 0 not checked. [2022-07-22 11:18:23,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:18:23,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011334745] [2022-07-22 11:18:23,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011334745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:18:23,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:18:23,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 11:18:23,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397861643] [2022-07-22 11:18:23,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:18:23,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 11:18:23,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:18:23,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 11:18:23,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:18:23,119 INFO L87 Difference]: Start difference. First operand 4076 states and 5886 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:25,926 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 [] [2022-07-22 11:18:26,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:18:26,245 INFO L93 Difference]: Finished difference Result 8149 states and 11768 transitions. [2022-07-22 11:18:26,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 11:18:26,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 321 [2022-07-22 11:18:26,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:18:26,251 INFO L225 Difference]: With dead ends: 8149 [2022-07-22 11:18:26,251 INFO L226 Difference]: Without dead ends: 4076 [2022-07-22 11:18:26,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:18:26,256 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 7 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:18:26,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 655 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 11:18:26,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2022-07-22 11:18:26,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 4076. [2022-07-22 11:18:26,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4076 states, 4075 states have (on average 1.4441717791411044) internal successors, (5885), 4075 states have internal predecessors, (5885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4076 states to 4076 states and 5885 transitions. [2022-07-22 11:18:26,365 INFO L78 Accepts]: Start accepts. Automaton has 4076 states and 5885 transitions. Word has length 321 [2022-07-22 11:18:26,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:18:26,365 INFO L495 AbstractCegarLoop]: Abstraction has 4076 states and 5885 transitions. [2022-07-22 11:18:26,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:26,365 INFO L276 IsEmpty]: Start isEmpty. Operand 4076 states and 5885 transitions. [2022-07-22 11:18:26,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-07-22 11:18:26,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:18:26,371 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2022-07-22 11:18:26,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-22 11:18:26,371 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:18:26,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:18:26,372 INFO L85 PathProgramCache]: Analyzing trace with hash -746809786, now seen corresponding path program 1 times [2022-07-22 11:18:26,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:18:26,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898453202] [2022-07-22 11:18:26,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:26,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:18:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:27,239 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 399 proven. 413 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-22 11:18:27,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:18:27,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898453202] [2022-07-22 11:18:27,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898453202] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:18:27,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126557193] [2022-07-22 11:18:27,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:27,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:18:27,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:18:27,240 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) [2022-07-22 11:18:27,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 11:18:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:28,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1631 conjuncts, 92 conjunts are in the unsatisfiable core [2022-07-22 11:18:28,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:18:28,392 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-22 11:18:28,393 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 [2022-07-22 11:18:28,482 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-07-22 11:18:28,482 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 [2022-07-22 11:18:28,491 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 9 treesize of output 3 [2022-07-22 11:18:28,494 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 [2022-07-22 11:18:28,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:28,534 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 [2022-07-22 11:18:28,557 INFO L356 Elim1Store]: treesize reduction 72, result has 40.0 percent of original size [2022-07-22 11:18:28,558 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 [2022-07-22 11:18:28,567 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-22 11:18:28,567 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 85 treesize of output 72 [2022-07-22 11:18:29,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:29,074 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 [2022-07-22 11:18:29,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:29,092 INFO L356 Elim1Store]: treesize reduction 127, result has 14.2 percent of original size [2022-07-22 11:18:29,093 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 [2022-07-22 11:18:29,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:29,098 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 [2022-07-22 11:18:29,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:29,198 INFO L356 Elim1Store]: treesize reduction 77, result has 35.8 percent of original size [2022-07-22 11:18:29,198 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 [2022-07-22 11:18:29,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:29,221 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 [2022-07-22 11:18:29,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:29,225 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 [2022-07-22 11:18:29,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:29,775 INFO L356 Elim1Store]: treesize reduction 60, result has 45.9 percent of original size [2022-07-22 11:18:29,775 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 [2022-07-22 11:18:29,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:29,813 INFO L356 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-07-22 11:18:29,813 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 [2022-07-22 11:18:29,885 INFO L356 Elim1Store]: treesize reduction 45, result has 52.6 percent of original size [2022-07-22 11:18:29,885 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 [2022-07-22 11:18:30,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:30,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:30,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:30,740 INFO L356 Elim1Store]: treesize reduction 148, result has 30.2 percent of original size [2022-07-22 11:18:30,741 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 2 case distinctions, treesize of input 275 treesize of output 300 [2022-07-22 11:18:30,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:30,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:30,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:30,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:30,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:30,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:30,751 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 321 treesize of output 267 [2022-07-22 11:18:30,782 INFO L356 Elim1Store]: treesize reduction 154, result has 15.4 percent of original size [2022-07-22 11:18:30,782 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 321 treesize of output 267 [2022-07-22 11:18:33,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:33,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:33,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:33,327 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 270 treesize of output 224 [2022-07-22 11:18:33,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:33,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:33,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:33,337 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 270 treesize of output 224 [2022-07-22 11:18:33,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:33,362 INFO L356 Elim1Store]: treesize reduction 77, result has 35.8 percent of original size [2022-07-22 11:18:33,363 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 270 treesize of output 270 [2022-07-22 11:18:33,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:33,518 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 162 treesize of output 114 [2022-07-22 11:18:33,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:33,521 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 114 treesize of output 72 [2022-07-22 11:18:33,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:33,541 INFO L356 Elim1Store]: treesize reduction 100, result has 16.0 percent of original size [2022-07-22 11:18:33,542 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 4 case distinctions, treesize of input 69 treesize of output 65 [2022-07-22 11:18:33,592 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-07-22 11:18:33,592 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 [2022-07-22 11:18:33,676 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 11:18:33,676 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 [2022-07-22 11:18:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 456 proven. 328 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-22 11:18:33,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:18:35,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:18:35,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:18:35,906 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 262 treesize of output 202 [2022-07-22 11:18:35,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:18:35,910 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:18:35,910 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 214 treesize of output 154 [2022-07-22 11:18:39,147 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 581 proven. 141 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-22 11:18:39,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126557193] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 11:18:39,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 11:18:39,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 14] total 43 [2022-07-22 11:18:39,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775200328] [2022-07-22 11:18:39,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 11:18:39,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-22 11:18:39,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:18:39,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-22 11:18:39,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1504, Unknown=0, NotChecked=0, Total=1806 [2022-07-22 11:18:39,150 INFO L87 Difference]: Start difference. First operand 4076 states and 5885 transitions. Second operand has 43 states, 43 states have (on average 12.534883720930232) internal successors, (539), 43 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:40,278 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 [] [2022-07-22 11:18:42,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:18:44,244 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:18:46,263 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:18:47,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:18:48,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:18:51,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:18:53,447 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:19:19,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:19:19,319 INFO L93 Difference]: Finished difference Result 25946 states and 36131 transitions. [2022-07-22 11:19:19,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2022-07-22 11:19:19,320 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 12.534883720930232) internal successors, (539), 43 states have internal predecessors, (539), 0 states have call successors, (0), 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 321 [2022-07-22 11:19:19,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:19:19,345 INFO L225 Difference]: With dead ends: 25946 [2022-07-22 11:19:19,345 INFO L226 Difference]: Without dead ends: 21893 [2022-07-22 11:19:19,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1073 GetRequests, 766 SyntacticMatches, 6 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38082 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=9296, Invalid=82210, Unknown=0, NotChecked=0, Total=91506 [2022-07-22 11:19:19,358 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 4571 mSDsluCounter, 13384 mSDsCounter, 0 mSdLazyCounter, 14068 mSolverCounterSat, 913 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4571 SdHoareTripleChecker+Valid, 14267 SdHoareTripleChecker+Invalid, 18986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 913 IncrementalHoareTripleChecker+Valid, 14068 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 4002 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2022-07-22 11:19:19,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4571 Valid, 14267 Invalid, 18986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [913 Valid, 14068 Invalid, 3 Unknown, 4002 Unchecked, 27.3s Time] [2022-07-22 11:19:19,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21893 states. [2022-07-22 11:19:19,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21893 to 11019. [2022-07-22 11:19:19,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11019 states, 11018 states have (on average 1.4065166091849701) internal successors, (15497), 11018 states have internal predecessors, (15497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11019 states to 11019 states and 15497 transitions. [2022-07-22 11:19:19,814 INFO L78 Accepts]: Start accepts. Automaton has 11019 states and 15497 transitions. Word has length 321 [2022-07-22 11:19:19,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:19:19,815 INFO L495 AbstractCegarLoop]: Abstraction has 11019 states and 15497 transitions. [2022-07-22 11:19:19,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 12.534883720930232) internal successors, (539), 43 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:19,815 INFO L276 IsEmpty]: Start isEmpty. Operand 11019 states and 15497 transitions. [2022-07-22 11:19:19,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-07-22 11:19:19,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:19:19,825 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:19:19,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 11:19:20,039 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,SelfDestructingSolverStorable56 [2022-07-22 11:19:20,040 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:19:20,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:19:20,040 INFO L85 PathProgramCache]: Analyzing trace with hash 856929381, now seen corresponding path program 1 times [2022-07-22 11:19:20,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:19:20,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817134234] [2022-07-22 11:19:20,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:19:20,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:19:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:19:20,313 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 611 proven. 55 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-07-22 11:19:20,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:19:20,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817134234] [2022-07-22 11:19:20,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817134234] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:19:20,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624389297] [2022-07-22 11:19:20,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:19:20,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:19:20,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:19:20,320 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) [2022-07-22 11:19:20,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 11:19:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:19:21,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-22 11:19:21,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:19:21,436 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-22 11:19:21,436 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 [2022-07-22 11:19:21,463 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 11:19:21,464 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 [2022-07-22 11:19:21,468 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 [2022-07-22 11:19:21,482 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-22 11:19:21,483 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 [2022-07-22 11:19:21,501 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 [2022-07-22 11:19:21,510 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 619 proven. 62 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-07-22 11:19:21,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:19:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 622 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-07-22 11:19:21,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624389297] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 11:19:21,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 11:19:21,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 9 [2022-07-22 11:19:21,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474220557] [2022-07-22 11:19:21,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:19:21,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:19:21,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:19:21,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:19:21,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 11:19:21,535 INFO L87 Difference]: Start difference. First operand 11019 states and 15497 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:22,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:19:22,730 INFO L93 Difference]: Finished difference Result 22600 states and 31749 transitions. [2022-07-22 11:19:22,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:19:22,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 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 331 [2022-07-22 11:19:22,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:19:22,741 INFO L225 Difference]: With dead ends: 22600 [2022-07-22 11:19:22,741 INFO L226 Difference]: Without dead ends: 11604 [2022-07-22 11:19:22,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 11:19:22,747 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 110 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:19:22,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 389 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 11:19:22,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11604 states. [2022-07-22 11:19:23,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11604 to 11095. [2022-07-22 11:19:23,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11095 states, 11094 states have (on average 1.3787632954750315) internal successors, (15296), 11094 states have internal predecessors, (15296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:23,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11095 states to 11095 states and 15296 transitions. [2022-07-22 11:19:23,104 INFO L78 Accepts]: Start accepts. Automaton has 11095 states and 15296 transitions. Word has length 331 [2022-07-22 11:19:23,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:19:23,104 INFO L495 AbstractCegarLoop]: Abstraction has 11095 states and 15296 transitions. [2022-07-22 11:19:23,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:23,104 INFO L276 IsEmpty]: Start isEmpty. Operand 11095 states and 15296 transitions. [2022-07-22 11:19:23,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-07-22 11:19:23,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:19:23,112 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:19:23,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 11:19:23,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:19:23,329 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:19:23,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:19:23,330 INFO L85 PathProgramCache]: Analyzing trace with hash -532107386, now seen corresponding path program 1 times [2022-07-22 11:19:23,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:19:23,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34665750] [2022-07-22 11:19:23,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:19:23,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:19:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:19:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 630 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-07-22 11:19:23,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:19:23,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34665750] [2022-07-22 11:19:23,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34665750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:19:23,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:19:23,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:19:23,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929835268] [2022-07-22 11:19:23,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:19:23,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:19:23,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:19:23,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:19:23,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:19:23,480 INFO L87 Difference]: Start difference. First operand 11095 states and 15296 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 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) [2022-07-22 11:19:25,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:19:25,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:19:25,699 INFO L93 Difference]: Finished difference Result 22224 states and 30629 transitions. [2022-07-22 11:19:25,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:19:25,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 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 332 [2022-07-22 11:19:25,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:19:25,734 INFO L225 Difference]: With dead ends: 22224 [2022-07-22 11:19:25,735 INFO L226 Difference]: Without dead ends: 11152 [2022-07-22 11:19:25,742 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 [2022-07-22 11:19:25,744 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 13 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:19:25,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 535 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 11:19:25,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11152 states. [2022-07-22 11:19:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11152 to 11095. [2022-07-22 11:19:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11095 states, 11094 states have (on average 1.377230935640887) internal successors, (15279), 11094 states have internal predecessors, (15279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:26,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11095 states to 11095 states and 15279 transitions. [2022-07-22 11:19:26,106 INFO L78 Accepts]: Start accepts. Automaton has 11095 states and 15279 transitions. Word has length 332 [2022-07-22 11:19:26,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:19:26,106 INFO L495 AbstractCegarLoop]: Abstraction has 11095 states and 15279 transitions. [2022-07-22 11:19:26,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 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) [2022-07-22 11:19:26,106 INFO L276 IsEmpty]: Start isEmpty. Operand 11095 states and 15279 transitions. [2022-07-22 11:19:26,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-07-22 11:19:26,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:19:26,116 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:19:26,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-22 11:19:26,116 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:19:26,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:19:26,117 INFO L85 PathProgramCache]: Analyzing trace with hash -803009120, now seen corresponding path program 1 times [2022-07-22 11:19:26,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:19:26,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402564819] [2022-07-22 11:19:26,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:19:26,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:19:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:19:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 638 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-07-22 11:19:26,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:19:26,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402564819] [2022-07-22 11:19:26,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402564819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:19:26,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:19:26,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:19:26,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279033941] [2022-07-22 11:19:26,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:19:26,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:19:26,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:19:26,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:19:26,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:19:26,292 INFO L87 Difference]: Start difference. First operand 11095 states and 15279 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:27,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:19:27,198 INFO L93 Difference]: Finished difference Result 22167 states and 30532 transitions. [2022-07-22 11:19:27,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:19:27,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 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 333 [2022-07-22 11:19:27,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:19:27,213 INFO L225 Difference]: With dead ends: 22167 [2022-07-22 11:19:27,213 INFO L226 Difference]: Without dead ends: 10697 [2022-07-22 11:19:27,222 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 [2022-07-22 11:19:27,223 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 10 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:19:27,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 529 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:19:27,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10697 states. [2022-07-22 11:19:27,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10697 to 10499. [2022-07-22 11:19:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10499 states, 10498 states have (on average 1.3788340636311678) internal successors, (14475), 10498 states have internal predecessors, (14475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:27,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10499 states to 10499 states and 14475 transitions. [2022-07-22 11:19:27,628 INFO L78 Accepts]: Start accepts. Automaton has 10499 states and 14475 transitions. Word has length 333 [2022-07-22 11:19:27,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:19:27,628 INFO L495 AbstractCegarLoop]: Abstraction has 10499 states and 14475 transitions. [2022-07-22 11:19:27,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:27,629 INFO L276 IsEmpty]: Start isEmpty. Operand 10499 states and 14475 transitions. [2022-07-22 11:19:27,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-07-22 11:19:27,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:19:27,637 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-22 11:19:27,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-22 11:19:27,637 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:19:27,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:19:27,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1819388906, now seen corresponding path program 1 times [2022-07-22 11:19:27,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:19:27,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140957941] [2022-07-22 11:19:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:19:27,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:19:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:19:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 573 proven. 26 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2022-07-22 11:19:27,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:19:27,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140957941] [2022-07-22 11:19:27,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140957941] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:19:27,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580871593] [2022-07-22 11:19:27,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:19:27,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:19:27,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:19:27,775 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) [2022-07-22 11:19:27,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 11:19:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:19:28,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1676 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 11:19:28,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:19:29,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 513 proven. 0 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2022-07-22 11:19:29,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:19:29,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580871593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:19:29,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 11:19:29,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-22 11:19:29,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960538688] [2022-07-22 11:19:29,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:19:29,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:19:29,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:19:29,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:19:29,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:19:29,066 INFO L87 Difference]: Start difference. First operand 10499 states and 14475 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:29,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:19:29,456 INFO L93 Difference]: Finished difference Result 13821 states and 19134 transitions. [2022-07-22 11:19:29,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:19:29,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 333 [2022-07-22 11:19:29,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:19:29,470 INFO L225 Difference]: With dead ends: 13821 [2022-07-22 11:19:29,470 INFO L226 Difference]: Without dead ends: 13816 [2022-07-22 11:19:29,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:19:29,474 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 145 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:19:29,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 363 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:19:29,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13816 states. [2022-07-22 11:19:29,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13816 to 13707. [2022-07-22 11:19:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13707 states, 13706 states have (on average 1.3838464905880636) internal successors, (18967), 13706 states have internal predecessors, (18967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:29,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13707 states to 13707 states and 18967 transitions. [2022-07-22 11:19:29,995 INFO L78 Accepts]: Start accepts. Automaton has 13707 states and 18967 transitions. Word has length 333 [2022-07-22 11:19:29,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:19:29,996 INFO L495 AbstractCegarLoop]: Abstraction has 13707 states and 18967 transitions. [2022-07-22 11:19:29,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:29,996 INFO L276 IsEmpty]: Start isEmpty. Operand 13707 states and 18967 transitions. [2022-07-22 11:19:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-07-22 11:19:30,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:19:30,007 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2022-07-22 11:19:30,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 11:19:30,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:19:30,213 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:19:30,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:19:30,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1879342140, now seen corresponding path program 2 times [2022-07-22 11:19:30,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:19:30,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342579837] [2022-07-22 11:19:30,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:19:30,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:19:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:19:30,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 567 proven. 92 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-07-22 11:19:30,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:19:30,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342579837] [2022-07-22 11:19:30,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342579837] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:19:30,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664838608] [2022-07-22 11:19:30,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 11:19:30,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:19:30,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:19:30,855 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) [2022-07-22 11:19:30,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 11:20:05,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 11:20:05,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 11:20:05,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 211 conjunts are in the unsatisfiable core [2022-07-22 11:20:05,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:20:05,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32538 treesize of output 27402 [2022-07-22 11:20:05,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:20:05,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 20 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12148 treesize of output 1898 [2022-07-22 11:20:10,700 INFO L244 Elim1Store]: Index analysis took 245 ms