./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 06e766f2b0fb57f78717a4ab927a7f5c398a4eef6e5769d710eaeddfb253f7dd --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 11:38:58,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:38:58,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:38:58,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:38:58,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:38:58,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:38:58,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:38:58,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:38:58,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:38:58,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:38:58,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:38:58,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:38:58,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:38:58,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:38:58,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:38:58,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:38:58,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:38:58,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:38:58,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:38:58,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:38:58,770 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:38:58,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:38:58,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:38:58,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:38:58,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:38:58,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:38:58,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:38:58,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:38:58,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:38:58,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:38:58,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:38:58,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:38:58,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:38:58,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:38:58,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:38:58,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:38:58,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:38:58,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:38:58,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:38:58,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:38:58,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:38:58,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:38:58,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 11:38:58,810 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:38:58,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:38:58,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:38:58,811 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:38:58,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:38:58,812 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:38:58,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:38:58,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:38:58,812 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:38:58,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:38:58,813 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:38:58,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 11:38:58,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:38:58,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:38:58,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:38:58,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:38:58,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:38:58,814 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:38:58,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:38:58,815 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:38:58,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:38:58,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:38:58,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:38:58,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:38:58,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:38:58,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:38:58,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:38:58,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:38:58,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 11:38:58,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 11:38:58,816 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:38:58,817 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:38:58,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:38:58,817 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06e766f2b0fb57f78717a4ab927a7f5c398a4eef6e5769d710eaeddfb253f7dd [2022-07-13 11:38:58,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:38:58,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:38:58,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:38:58,997 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:38:58,997 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:38:58,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-2.c [2022-07-13 11:38:59,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e1642bda/143ade14771c4f9bbe46401b0f24c05b/FLAG0212a232c [2022-07-13 11:38:59,502 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:38:59,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-2.c [2022-07-13 11:38:59,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e1642bda/143ade14771c4f9bbe46401b0f24c05b/FLAG0212a232c [2022-07-13 11:38:59,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e1642bda/143ade14771c4f9bbe46401b0f24c05b [2022-07-13 11:38:59,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:38:59,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:38:59,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:38:59,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:38:59,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:38:59,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:38:59" (1/1) ... [2022-07-13 11:38:59,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65cafd89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:59, skipping insertion in model container [2022-07-13 11:38:59,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:38:59" (1/1) ... [2022-07-13 11:38:59,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:38:59,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:38:59,904 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-2.c[73311,73324] [2022-07-13 11:38:59,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:38:59,927 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:39:00,008 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-2.c[73311,73324] [2022-07-13 11:39:00,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:39:00,029 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:39:00,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:00 WrapperNode [2022-07-13 11:39:00,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:39:00,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:39:00,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:39:00,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:39:00,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:00" (1/1) ... [2022-07-13 11:39:00,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:00" (1/1) ... [2022-07-13 11:39:00,095 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 787 [2022-07-13 11:39:00,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:39:00,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:39:00,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:39:00,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:39:00,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:00" (1/1) ... [2022-07-13 11:39:00,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:00" (1/1) ... [2022-07-13 11:39:00,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:00" (1/1) ... [2022-07-13 11:39:00,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:00" (1/1) ... [2022-07-13 11:39:00,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:00" (1/1) ... [2022-07-13 11:39:00,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:00" (1/1) ... [2022-07-13 11:39:00,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:00" (1/1) ... [2022-07-13 11:39:00,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:39:00,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:39:00,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:39:00,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:39:00,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:00" (1/1) ... [2022-07-13 11:39:00,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:39:00,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:39:00,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 11:39:00,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 11:39:00,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:39:00,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 11:39:00,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 11:39:00,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 11:39:00,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 11:39:00,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 11:39:00,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 11:39:00,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:39:00,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:39:00,326 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:39:00,327 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:39:00,339 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:39:02,641 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-13 11:39:02,642 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-13 11:39:02,642 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:39:02,650 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:39:02,651 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 11:39:02,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:39:02 BoogieIcfgContainer [2022-07-13 11:39:02,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:39:02,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:39:02,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:39:02,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:39:02,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:38:59" (1/3) ... [2022-07-13 11:39:02,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c95b4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:39:02, skipping insertion in model container [2022-07-13 11:39:02,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:00" (2/3) ... [2022-07-13 11:39:02,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c95b4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:39:02, skipping insertion in model container [2022-07-13 11:39:02,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:39:02" (3/3) ... [2022-07-13 11:39:02,661 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.10.i.cil-2.c [2022-07-13 11:39:02,671 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:39:02,671 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:39:02,716 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:39:02,722 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@2600905c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@586892a4 [2022-07-13 11:39:02,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:39:02,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.710344827586207) internal successors, (248), 146 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:02,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 11:39:02,735 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:02,735 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] [2022-07-13 11:39:02,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:02,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:02,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1692155939, now seen corresponding path program 1 times [2022-07-13 11:39:02,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:02,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368663179] [2022-07-13 11:39:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:02,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:39:03,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:03,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368663179] [2022-07-13 11:39:03,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368663179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:03,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:03,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:03,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92677863] [2022-07-13 11:39:03,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:03,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:03,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:03,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:03,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:03,258 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.710344827586207) internal successors, (248), 146 states have internal predecessors, (248), 0 states have call successors, (0), 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 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:03,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:03,964 INFO L93 Difference]: Finished difference Result 412 states and 698 transitions. [2022-07-13 11:39:03,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:03,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-07-13 11:39:03,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:03,974 INFO L225 Difference]: With dead ends: 412 [2022-07-13 11:39:03,975 INFO L226 Difference]: Without dead ends: 250 [2022-07-13 11:39:03,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:03,979 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 150 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:03,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 423 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:39:03,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-07-13 11:39:04,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 174. [2022-07-13 11:39:04,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.6011560693641618) internal successors, (277), 173 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:04,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 277 transitions. [2022-07-13 11:39:04,010 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 277 transitions. Word has length 43 [2022-07-13 11:39:04,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:04,010 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 277 transitions. [2022-07-13 11:39:04,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:04,010 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 277 transitions. [2022-07-13 11:39:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-13 11:39:04,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:04,012 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] [2022-07-13 11:39:04,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 11:39:04,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:04,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:04,013 INFO L85 PathProgramCache]: Analyzing trace with hash 910693922, now seen corresponding path program 1 times [2022-07-13 11:39:04,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:04,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367987514] [2022-07-13 11:39:04,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:04,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:39:04,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:04,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367987514] [2022-07-13 11:39:04,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367987514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:04,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:04,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:04,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89355139] [2022-07-13 11:39:04,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:04,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:04,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:04,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:04,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:04,126 INFO L87 Difference]: Start difference. First operand 174 states and 277 transitions. 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) [2022-07-13 11:39:04,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:04,614 INFO L93 Difference]: Finished difference Result 366 states and 581 transitions. [2022-07-13 11:39:04,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:04,615 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 [2022-07-13 11:39:04,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:04,616 INFO L225 Difference]: With dead ends: 366 [2022-07-13 11:39:04,616 INFO L226 Difference]: Without dead ends: 202 [2022-07-13 11:39:04,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:04,617 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 22 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:04,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 451 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:39:04,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-13 11:39:04,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 185. [2022-07-13 11:39:04,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.608695652173913) internal successors, (296), 184 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:04,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 296 transitions. [2022-07-13 11:39:04,626 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 296 transitions. Word has length 44 [2022-07-13 11:39:04,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:04,626 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 296 transitions. [2022-07-13 11:39:04,627 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) [2022-07-13 11:39:04,627 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 296 transitions. [2022-07-13 11:39:04,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 11:39:04,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:04,628 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] [2022-07-13 11:39:04,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 11:39:04,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:04,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:04,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1232633144, now seen corresponding path program 1 times [2022-07-13 11:39:04,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:04,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282362869] [2022-07-13 11:39:04,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:04,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:39:04,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:04,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282362869] [2022-07-13 11:39:04,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282362869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:04,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:04,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:04,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257228771] [2022-07-13 11:39:04,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:04,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:04,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:04,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:04,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:04,732 INFO L87 Difference]: Start difference. First operand 185 states and 296 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:06,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:06,037 INFO L93 Difference]: Finished difference Result 503 states and 809 transitions. [2022-07-13 11:39:06,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:06,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-07-13 11:39:06,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:06,040 INFO L225 Difference]: With dead ends: 503 [2022-07-13 11:39:06,040 INFO L226 Difference]: Without dead ends: 339 [2022-07-13 11:39:06,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:06,042 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 139 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:06,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 588 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 11:39:06,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-13 11:39:06,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 217. [2022-07-13 11:39:06,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.6064814814814814) internal successors, (347), 216 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:06,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 347 transitions. [2022-07-13 11:39:06,054 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 347 transitions. Word has length 57 [2022-07-13 11:39:06,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:06,055 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 347 transitions. [2022-07-13 11:39:06,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:06,055 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 347 transitions. [2022-07-13 11:39:06,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-13 11:39:06,057 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:06,057 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] [2022-07-13 11:39:06,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 11:39:06,058 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:06,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:06,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1458561385, now seen corresponding path program 1 times [2022-07-13 11:39:06,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:06,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519018258] [2022-07-13 11:39:06,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:06,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:06,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:39:06,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:06,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519018258] [2022-07-13 11:39:06,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519018258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:06,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:06,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:06,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911242555] [2022-07-13 11:39:06,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:06,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:06,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:06,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:06,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:06,144 INFO L87 Difference]: Start difference. First operand 217 states and 347 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) [2022-07-13 11:39:06,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:06,977 INFO L93 Difference]: Finished difference Result 511 states and 812 transitions. [2022-07-13 11:39:06,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:06,978 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 [2022-07-13 11:39:06,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:06,980 INFO L225 Difference]: With dead ends: 511 [2022-07-13 11:39:06,981 INFO L226 Difference]: Without dead ends: 315 [2022-07-13 11:39:06,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:06,982 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 144 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:06,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 316 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:39:06,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-13 11:39:06,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 217. [2022-07-13 11:39:06,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.587962962962963) internal successors, (343), 216 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) [2022-07-13 11:39:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 343 transitions. [2022-07-13 11:39:06,994 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 343 transitions. Word has length 58 [2022-07-13 11:39:06,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:06,995 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 343 transitions. [2022-07-13 11:39:06,995 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) [2022-07-13 11:39:06,995 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 343 transitions. [2022-07-13 11:39:06,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-13 11:39:06,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:06,997 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] [2022-07-13 11:39:06,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 11:39:06,998 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:06,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:06,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1788895107, now seen corresponding path program 1 times [2022-07-13 11:39:06,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:06,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729721743] [2022-07-13 11:39:06,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:06,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:07,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:39:07,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:07,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729721743] [2022-07-13 11:39:07,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729721743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:07,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:07,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:07,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922396334] [2022-07-13 11:39:07,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:07,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:07,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:07,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:07,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:07,115 INFO L87 Difference]: Start difference. First operand 217 states and 343 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) [2022-07-13 11:39:07,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:07,982 INFO L93 Difference]: Finished difference Result 429 states and 675 transitions. [2022-07-13 11:39:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:07,990 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 [2022-07-13 11:39:07,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:07,991 INFO L225 Difference]: With dead ends: 429 [2022-07-13 11:39:07,991 INFO L226 Difference]: Without dead ends: 233 [2022-07-13 11:39:07,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:07,992 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 26 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:07,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 455 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:39:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-13 11:39:07,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 217. [2022-07-13 11:39:07,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.5833333333333333) internal successors, (342), 216 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) [2022-07-13 11:39:07,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 342 transitions. [2022-07-13 11:39:07,998 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 342 transitions. Word has length 58 [2022-07-13 11:39:07,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:07,998 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 342 transitions. [2022-07-13 11:39:07,998 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) [2022-07-13 11:39:07,998 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 342 transitions. [2022-07-13 11:39:07,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-13 11:39:07,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:08,000 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] [2022-07-13 11:39:08,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 11:39:08,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:08,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:08,000 INFO L85 PathProgramCache]: Analyzing trace with hash 653028812, now seen corresponding path program 1 times [2022-07-13 11:39:08,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:08,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131157192] [2022-07-13 11:39:08,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:08,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:39:08,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:08,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131157192] [2022-07-13 11:39:08,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131157192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:08,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:08,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:08,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117636149] [2022-07-13 11:39:08,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:08,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:08,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:08,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:08,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:08,130 INFO L87 Difference]: Start difference. First operand 217 states and 342 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) [2022-07-13 11:39:08,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:08,608 INFO L93 Difference]: Finished difference Result 428 states and 673 transitions. [2022-07-13 11:39:08,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:08,609 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 [2022-07-13 11:39:08,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:08,610 INFO L225 Difference]: With dead ends: 428 [2022-07-13 11:39:08,610 INFO L226 Difference]: Without dead ends: 232 [2022-07-13 11:39:08,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:08,611 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 19 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:08,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 457 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:39:08,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-13 11:39:08,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 217. [2022-07-13 11:39:08,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.5787037037037037) internal successors, (341), 216 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) [2022-07-13 11:39:08,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 341 transitions. [2022-07-13 11:39:08,617 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 341 transitions. Word has length 58 [2022-07-13 11:39:08,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:08,619 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 341 transitions. [2022-07-13 11:39:08,619 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) [2022-07-13 11:39:08,619 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 341 transitions. [2022-07-13 11:39:08,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-13 11:39:08,619 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:08,620 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] [2022-07-13 11:39:08,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 11:39:08,620 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:08,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:08,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1973882124, now seen corresponding path program 1 times [2022-07-13 11:39:08,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:08,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003386480] [2022-07-13 11:39:08,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:08,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:39:08,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:08,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003386480] [2022-07-13 11:39:08,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003386480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:08,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:08,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:08,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871387093] [2022-07-13 11:39:08,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:08,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:08,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:08,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:08,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:08,705 INFO L87 Difference]: Start difference. First operand 217 states and 341 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) [2022-07-13 11:39:09,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:09,343 INFO L93 Difference]: Finished difference Result 511 states and 803 transitions. [2022-07-13 11:39:09,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:09,344 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 [2022-07-13 11:39:09,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:09,345 INFO L225 Difference]: With dead ends: 511 [2022-07-13 11:39:09,345 INFO L226 Difference]: Without dead ends: 315 [2022-07-13 11:39:09,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:09,346 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 137 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:09,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 316 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:09,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-13 11:39:09,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 218. [2022-07-13 11:39:09,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.566820276497696) internal successors, (340), 217 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) [2022-07-13 11:39:09,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 340 transitions. [2022-07-13 11:39:09,352 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 340 transitions. Word has length 58 [2022-07-13 11:39:09,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:09,352 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 340 transitions. [2022-07-13 11:39:09,352 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) [2022-07-13 11:39:09,353 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 340 transitions. [2022-07-13 11:39:09,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-13 11:39:09,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:09,353 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] [2022-07-13 11:39:09,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 11:39:09,354 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:09,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:09,354 INFO L85 PathProgramCache]: Analyzing trace with hash 477040383, now seen corresponding path program 1 times [2022-07-13 11:39:09,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:09,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603868795] [2022-07-13 11:39:09,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:09,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:39:09,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:09,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603868795] [2022-07-13 11:39:09,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603868795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:09,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:09,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:09,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276001841] [2022-07-13 11:39:09,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:09,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:09,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:09,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:09,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:09,422 INFO L87 Difference]: Start difference. First operand 218 states and 340 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) [2022-07-13 11:39:09,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:09,918 INFO L93 Difference]: Finished difference Result 428 states and 669 transitions. [2022-07-13 11:39:09,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:09,919 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 [2022-07-13 11:39:09,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:09,920 INFO L225 Difference]: With dead ends: 428 [2022-07-13 11:39:09,920 INFO L226 Difference]: Without dead ends: 231 [2022-07-13 11:39:09,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:09,921 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 22 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:09,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 461 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:39:09,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-07-13 11:39:09,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 218. [2022-07-13 11:39:09,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5622119815668203) internal successors, (339), 217 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) [2022-07-13 11:39:09,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 339 transitions. [2022-07-13 11:39:09,925 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 339 transitions. Word has length 59 [2022-07-13 11:39:09,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:09,925 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 339 transitions. [2022-07-13 11:39:09,925 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) [2022-07-13 11:39:09,925 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 339 transitions. [2022-07-13 11:39:09,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-13 11:39:09,926 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:09,926 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] [2022-07-13 11:39:09,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 11:39:09,926 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:09,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:09,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1137447710, now seen corresponding path program 1 times [2022-07-13 11:39:09,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:09,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485093824] [2022-07-13 11:39:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:09,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:39:10,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:10,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485093824] [2022-07-13 11:39:10,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485093824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:10,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:10,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:10,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336350783] [2022-07-13 11:39:10,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:10,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:10,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:10,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:10,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:10,029 INFO L87 Difference]: Start difference. First operand 218 states and 339 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) [2022-07-13 11:39:11,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:11,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:11,627 INFO L93 Difference]: Finished difference Result 428 states and 668 transitions. [2022-07-13 11:39:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:11,627 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 [2022-07-13 11:39:11,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:11,628 INFO L225 Difference]: With dead ends: 428 [2022-07-13 11:39:11,628 INFO L226 Difference]: Without dead ends: 231 [2022-07-13 11:39:11,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:11,629 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 20 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:11,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 461 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 11:39:11,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-07-13 11:39:11,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 218. [2022-07-13 11:39:11,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5576036866359446) internal successors, (338), 217 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 338 transitions. [2022-07-13 11:39:11,634 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 338 transitions. Word has length 60 [2022-07-13 11:39:11,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:11,634 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 338 transitions. [2022-07-13 11:39:11,634 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) [2022-07-13 11:39:11,634 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 338 transitions. [2022-07-13 11:39:11,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-13 11:39:11,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:11,634 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] [2022-07-13 11:39:11,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 11:39:11,635 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:11,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:11,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1486530822, now seen corresponding path program 1 times [2022-07-13 11:39:11,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:11,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717119790] [2022-07-13 11:39:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:11,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:39:11,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:11,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717119790] [2022-07-13 11:39:11,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717119790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:11,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:11,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:11,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551623345] [2022-07-13 11:39:11,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:11,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:11,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:11,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:11,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:11,727 INFO L87 Difference]: Start difference. First operand 218 states and 338 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:12,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:12,639 INFO L93 Difference]: Finished difference Result 418 states and 654 transitions. [2022-07-13 11:39:12,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:12,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-13 11:39:12,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:12,640 INFO L225 Difference]: With dead ends: 418 [2022-07-13 11:39:12,640 INFO L226 Difference]: Without dead ends: 221 [2022-07-13 11:39:12,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:12,641 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 11 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:12,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 475 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 11:39:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-07-13 11:39:12,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 218. [2022-07-13 11:39:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5529953917050692) internal successors, (337), 217 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 337 transitions. [2022-07-13 11:39:12,646 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 337 transitions. Word has length 61 [2022-07-13 11:39:12,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:12,646 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 337 transitions. [2022-07-13 11:39:12,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:12,647 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 337 transitions. [2022-07-13 11:39:12,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-13 11:39:12,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:12,647 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] [2022-07-13 11:39:12,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 11:39:12,648 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:12,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:12,648 INFO L85 PathProgramCache]: Analyzing trace with hash -813532014, now seen corresponding path program 1 times [2022-07-13 11:39:12,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:12,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523515454] [2022-07-13 11:39:12,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:12,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:39:12,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:12,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523515454] [2022-07-13 11:39:12,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523515454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:12,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:12,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:12,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636780387] [2022-07-13 11:39:12,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:12,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:12,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:12,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:12,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:12,773 INFO L87 Difference]: Start difference. First operand 218 states and 337 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:13,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:13,578 INFO L93 Difference]: Finished difference Result 512 states and 797 transitions. [2022-07-13 11:39:13,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:13,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-13 11:39:13,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:13,580 INFO L225 Difference]: With dead ends: 512 [2022-07-13 11:39:13,580 INFO L226 Difference]: Without dead ends: 315 [2022-07-13 11:39:13,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:13,581 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 114 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:13,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 330 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:39:13,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-13 11:39:13,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 241. [2022-07-13 11:39:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.5916666666666666) internal successors, (382), 240 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:13,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 382 transitions. [2022-07-13 11:39:13,586 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 382 transitions. Word has length 61 [2022-07-13 11:39:13,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:13,586 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 382 transitions. [2022-07-13 11:39:13,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:13,586 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 382 transitions. [2022-07-13 11:39:13,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-13 11:39:13,587 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:13,587 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] [2022-07-13 11:39:13,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 11:39:13,588 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:13,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:13,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1848715960, now seen corresponding path program 1 times [2022-07-13 11:39:13,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:13,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37984710] [2022-07-13 11:39:13,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:13,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:13,661 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:39:13,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:13,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37984710] [2022-07-13 11:39:13,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37984710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:13,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:13,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:13,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054472927] [2022-07-13 11:39:13,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:13,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:13,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:13,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:13,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:13,663 INFO L87 Difference]: Start difference. First operand 241 states and 382 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:14,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:14,308 INFO L93 Difference]: Finished difference Result 611 states and 977 transitions. [2022-07-13 11:39:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:14,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-07-13 11:39:14,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:14,310 INFO L225 Difference]: With dead ends: 611 [2022-07-13 11:39:14,310 INFO L226 Difference]: Without dead ends: 391 [2022-07-13 11:39:14,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:14,311 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 120 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:14,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 326 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:14,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-07-13 11:39:14,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 305. [2022-07-13 11:39:14,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.618421052631579) internal successors, (492), 304 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:14,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 492 transitions. [2022-07-13 11:39:14,316 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 492 transitions. Word has length 89 [2022-07-13 11:39:14,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:14,316 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 492 transitions. [2022-07-13 11:39:14,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:14,317 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 492 transitions. [2022-07-13 11:39:14,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-13 11:39:14,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:14,317 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] [2022-07-13 11:39:14,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 11:39:14,317 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:14,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:14,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1555801769, now seen corresponding path program 1 times [2022-07-13 11:39:14,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:14,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349267939] [2022-07-13 11:39:14,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:14,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:39:14,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:14,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349267939] [2022-07-13 11:39:14,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349267939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:14,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:14,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:14,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498503451] [2022-07-13 11:39:14,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:14,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:14,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:14,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:14,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:14,395 INFO L87 Difference]: Start difference. First operand 305 states and 492 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:15,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:15,037 INFO L93 Difference]: Finished difference Result 703 states and 1130 transitions. [2022-07-13 11:39:15,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:15,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-07-13 11:39:15,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:15,039 INFO L225 Difference]: With dead ends: 703 [2022-07-13 11:39:15,039 INFO L226 Difference]: Without dead ends: 419 [2022-07-13 11:39:15,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:15,040 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 116 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:15,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 314 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:15,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-07-13 11:39:15,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 342. [2022-07-13 11:39:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 1.6275659824046922) internal successors, (555), 341 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 555 transitions. [2022-07-13 11:39:15,048 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 555 transitions. Word has length 94 [2022-07-13 11:39:15,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:15,048 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 555 transitions. [2022-07-13 11:39:15,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:15,048 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 555 transitions. [2022-07-13 11:39:15,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 11:39:15,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:15,049 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] [2022-07-13 11:39:15,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 11:39:15,050 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:15,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:15,050 INFO L85 PathProgramCache]: Analyzing trace with hash 430223126, now seen corresponding path program 1 times [2022-07-13 11:39:15,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:15,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983531702] [2022-07-13 11:39:15,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:15,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:15,145 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:39:15,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:15,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983531702] [2022-07-13 11:39:15,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983531702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:15,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:15,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:15,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300285105] [2022-07-13 11:39:15,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:15,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:15,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:15,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:15,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:15,147 INFO L87 Difference]: Start difference. First operand 342 states and 555 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:15,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:15,642 INFO L93 Difference]: Finished difference Result 703 states and 1145 transitions. [2022-07-13 11:39:15,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:15,643 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 95 [2022-07-13 11:39:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:15,645 INFO L225 Difference]: With dead ends: 703 [2022-07-13 11:39:15,645 INFO L226 Difference]: Without dead ends: 382 [2022-07-13 11:39:15,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:15,646 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 31 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 479 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 [2022-07-13 11:39:15,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 479 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:39:15,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-13 11:39:15,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 364. [2022-07-13 11:39:15,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.6253443526170799) internal successors, (590), 363 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:15,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 590 transitions. [2022-07-13 11:39:15,654 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 590 transitions. Word has length 95 [2022-07-13 11:39:15,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:15,654 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 590 transitions. [2022-07-13 11:39:15,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:15,654 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 590 transitions. [2022-07-13 11:39:15,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 11:39:15,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:15,655 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] [2022-07-13 11:39:15,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 11:39:15,656 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:15,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:15,656 INFO L85 PathProgramCache]: Analyzing trace with hash -174040009, now seen corresponding path program 1 times [2022-07-13 11:39:15,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:15,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246907493] [2022-07-13 11:39:15,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:15,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:15,740 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 11:39:15,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:15,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246907493] [2022-07-13 11:39:15,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246907493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:15,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:15,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:15,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492124549] [2022-07-13 11:39:15,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:15,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:15,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:15,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:15,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:15,742 INFO L87 Difference]: Start difference. First operand 364 states and 590 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:16,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:16,440 INFO L93 Difference]: Finished difference Result 725 states and 1179 transitions. [2022-07-13 11:39:16,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:16,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-07-13 11:39:16,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:16,444 INFO L225 Difference]: With dead ends: 725 [2022-07-13 11:39:16,444 INFO L226 Difference]: Without dead ends: 382 [2022-07-13 11:39:16,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:16,452 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 40 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:16,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 479 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:39:16,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-13 11:39:16,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 364. [2022-07-13 11:39:16,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.6225895316804408) internal successors, (589), 363 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:16,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 589 transitions. [2022-07-13 11:39:16,459 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 589 transitions. Word has length 109 [2022-07-13 11:39:16,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:16,459 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 589 transitions. [2022-07-13 11:39:16,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:16,460 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 589 transitions. [2022-07-13 11:39:16,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 11:39:16,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:16,461 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] [2022-07-13 11:39:16,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 11:39:16,461 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:16,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:16,461 INFO L85 PathProgramCache]: Analyzing trace with hash -851994560, now seen corresponding path program 1 times [2022-07-13 11:39:16,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:16,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223694250] [2022-07-13 11:39:16,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:16,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:16,561 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 11:39:16,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:16,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223694250] [2022-07-13 11:39:16,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223694250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:16,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:16,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:16,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202721603] [2022-07-13 11:39:16,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:16,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:16,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:16,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:16,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:16,565 INFO L87 Difference]: Start difference. First operand 364 states and 589 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:17,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:17,121 INFO L93 Difference]: Finished difference Result 780 states and 1254 transitions. [2022-07-13 11:39:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:17,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-07-13 11:39:17,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:17,123 INFO L225 Difference]: With dead ends: 780 [2022-07-13 11:39:17,123 INFO L226 Difference]: Without dead ends: 437 [2022-07-13 11:39:17,124 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 [2022-07-13 11:39:17,124 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 135 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:17,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 316 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:39:17,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-13 11:39:17,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2022-07-13 11:39:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.606060606060606) internal successors, (583), 363 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:17,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 583 transitions. [2022-07-13 11:39:17,134 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 583 transitions. Word has length 109 [2022-07-13 11:39:17,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:17,134 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 583 transitions. [2022-07-13 11:39:17,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:17,134 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 583 transitions. [2022-07-13 11:39:17,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-13 11:39:17,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:17,135 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] [2022-07-13 11:39:17,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 11:39:17,135 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:17,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:17,136 INFO L85 PathProgramCache]: Analyzing trace with hash 262499795, now seen corresponding path program 1 times [2022-07-13 11:39:17,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:17,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842556309] [2022-07-13 11:39:17,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:17,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 11:39:17,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:17,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842556309] [2022-07-13 11:39:17,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842556309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:17,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:17,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:17,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363455914] [2022-07-13 11:39:17,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:17,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:17,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:17,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:17,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:17,212 INFO L87 Difference]: Start difference. First operand 364 states and 583 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) [2022-07-13 11:39:17,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:17,999 INFO L93 Difference]: Finished difference Result 780 states and 1242 transitions. [2022-07-13 11:39:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:17,999 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 [2022-07-13 11:39:17,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:18,001 INFO L225 Difference]: With dead ends: 780 [2022-07-13 11:39:18,001 INFO L226 Difference]: Without dead ends: 437 [2022-07-13 11:39:18,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:18,002 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 139 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 316 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 [2022-07-13 11:39:18,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 316 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:39:18,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-13 11:39:18,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2022-07-13 11:39:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.5867768595041323) internal successors, (576), 363 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 576 transitions. [2022-07-13 11:39:18,008 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 576 transitions. Word has length 110 [2022-07-13 11:39:18,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:18,008 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 576 transitions. [2022-07-13 11:39:18,008 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) [2022-07-13 11:39:18,008 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 576 transitions. [2022-07-13 11:39:18,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 11:39:18,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:18,009 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] [2022-07-13 11:39:18,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 11:39:18,009 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:18,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:18,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1945924334, now seen corresponding path program 1 times [2022-07-13 11:39:18,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:18,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426709209] [2022-07-13 11:39:18,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:18,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:18,090 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 11:39:18,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:18,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426709209] [2022-07-13 11:39:18,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426709209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:18,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:18,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:18,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518945871] [2022-07-13 11:39:18,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:18,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:18,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:18,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:18,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:18,092 INFO L87 Difference]: Start difference. First operand 364 states and 576 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:19,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:19,136 INFO L93 Difference]: Finished difference Result 780 states and 1228 transitions. [2022-07-13 11:39:19,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:19,136 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 [2022-07-13 11:39:19,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:19,137 INFO L225 Difference]: With dead ends: 780 [2022-07-13 11:39:19,137 INFO L226 Difference]: Without dead ends: 437 [2022-07-13 11:39:19,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:19,138 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 137 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:19,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 316 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 11:39:19,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-13 11:39:19,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2022-07-13 11:39:19,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.5674931129476584) internal successors, (569), 363 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 569 transitions. [2022-07-13 11:39:19,144 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 569 transitions. Word has length 111 [2022-07-13 11:39:19,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:19,144 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 569 transitions. [2022-07-13 11:39:19,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:19,145 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 569 transitions. [2022-07-13 11:39:19,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 11:39:19,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:19,145 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] [2022-07-13 11:39:19,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 11:39:19,146 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:19,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:19,146 INFO L85 PathProgramCache]: Analyzing trace with hash -248884466, now seen corresponding path program 1 times [2022-07-13 11:39:19,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:19,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52530155] [2022-07-13 11:39:19,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:19,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 11:39:19,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:19,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52530155] [2022-07-13 11:39:19,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52530155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:19,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:19,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:19,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754546205] [2022-07-13 11:39:19,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:19,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:19,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:19,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:19,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:19,215 INFO L87 Difference]: Start difference. First operand 364 states and 569 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:20,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:20,437 INFO L93 Difference]: Finished difference Result 780 states and 1214 transitions. [2022-07-13 11:39:20,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:20,438 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 [2022-07-13 11:39:20,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:20,439 INFO L225 Difference]: With dead ends: 780 [2022-07-13 11:39:20,439 INFO L226 Difference]: Without dead ends: 437 [2022-07-13 11:39:20,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:20,440 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 135 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:20,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 316 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 11:39:20,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-13 11:39:20,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2022-07-13 11:39:20,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.5482093663911847) internal successors, (562), 363 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:20,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 562 transitions. [2022-07-13 11:39:20,446 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 562 transitions. Word has length 112 [2022-07-13 11:39:20,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:20,446 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 562 transitions. [2022-07-13 11:39:20,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:20,446 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 562 transitions. [2022-07-13 11:39:20,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 11:39:20,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:20,447 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] [2022-07-13 11:39:20,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 11:39:20,448 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:20,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:20,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1564451825, now seen corresponding path program 1 times [2022-07-13 11:39:20,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:20,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394931009] [2022-07-13 11:39:20,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:20,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:39:20,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:20,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394931009] [2022-07-13 11:39:20,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394931009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:20,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:20,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:20,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420236896] [2022-07-13 11:39:20,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:20,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:20,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:20,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:20,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:20,582 INFO L87 Difference]: Start difference. First operand 364 states and 562 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:21,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:21,784 INFO L93 Difference]: Finished difference Result 797 states and 1232 transitions. [2022-07-13 11:39:21,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:21,785 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 117 [2022-07-13 11:39:21,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:21,786 INFO L225 Difference]: With dead ends: 797 [2022-07-13 11:39:21,786 INFO L226 Difference]: Without dead ends: 454 [2022-07-13 11:39:21,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:21,787 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 74 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:21,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 447 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 11:39:21,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-07-13 11:39:21,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 404. [2022-07-13 11:39:21,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 1.5508684863523574) internal successors, (625), 403 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:21,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 625 transitions. [2022-07-13 11:39:21,793 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 625 transitions. Word has length 117 [2022-07-13 11:39:21,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:21,793 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 625 transitions. [2022-07-13 11:39:21,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:21,794 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 625 transitions. [2022-07-13 11:39:21,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 11:39:21,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:21,795 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] [2022-07-13 11:39:21,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 11:39:21,795 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:21,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:21,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1843292625, now seen corresponding path program 1 times [2022-07-13 11:39:21,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:21,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651570693] [2022-07-13 11:39:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:21,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:21,870 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-13 11:39:21,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:21,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651570693] [2022-07-13 11:39:21,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651570693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:21,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:21,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:21,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483780682] [2022-07-13 11:39:21,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:21,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:21,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:21,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:21,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:21,872 INFO L87 Difference]: Start difference. First operand 404 states and 625 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:22,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:22,876 INFO L93 Difference]: Finished difference Result 832 states and 1289 transitions. [2022-07-13 11:39:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:22,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-07-13 11:39:22,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:22,878 INFO L225 Difference]: With dead ends: 832 [2022-07-13 11:39:22,878 INFO L226 Difference]: Without dead ends: 449 [2022-07-13 11:39:22,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:22,879 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 33 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:22,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 567 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 11:39:22,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-07-13 11:39:22,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 428. [2022-07-13 11:39:22,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.5456674473067915) internal successors, (660), 427 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:22,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 660 transitions. [2022-07-13 11:39:22,890 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 660 transitions. Word has length 117 [2022-07-13 11:39:22,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:22,890 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 660 transitions. [2022-07-13 11:39:22,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:22,890 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 660 transitions. [2022-07-13 11:39:22,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-13 11:39:22,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:22,891 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] [2022-07-13 11:39:22,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 11:39:22,891 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:22,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:22,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1399752639, now seen corresponding path program 1 times [2022-07-13 11:39:22,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:22,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259314382] [2022-07-13 11:39:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:22,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:39:22,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:22,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259314382] [2022-07-13 11:39:22,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259314382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:22,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:22,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:22,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265498635] [2022-07-13 11:39:22,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:22,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:22,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:22,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:22,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:22,986 INFO L87 Difference]: Start difference. First operand 428 states and 660 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:23,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:23,629 INFO L93 Difference]: Finished difference Result 948 states and 1460 transitions. [2022-07-13 11:39:23,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:23,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 125 [2022-07-13 11:39:23,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:23,631 INFO L225 Difference]: With dead ends: 948 [2022-07-13 11:39:23,631 INFO L226 Difference]: Without dead ends: 541 [2022-07-13 11:39:23,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:23,632 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 105 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:23,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 317 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:23,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-13 11:39:23,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 471. [2022-07-13 11:39:23,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.5510638297872341) internal successors, (729), 470 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:23,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 729 transitions. [2022-07-13 11:39:23,639 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 729 transitions. Word has length 125 [2022-07-13 11:39:23,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:23,639 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 729 transitions. [2022-07-13 11:39:23,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:23,640 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 729 transitions. [2022-07-13 11:39:23,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-13 11:39:23,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:23,641 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] [2022-07-13 11:39:23,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 11:39:23,641 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:23,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:23,641 INFO L85 PathProgramCache]: Analyzing trace with hash 309940842, now seen corresponding path program 1 times [2022-07-13 11:39:23,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:23,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906929595] [2022-07-13 11:39:23,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:23,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:23,720 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:39:23,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:23,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906929595] [2022-07-13 11:39:23,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906929595] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:23,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:23,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:23,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343097392] [2022-07-13 11:39:23,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:23,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:23,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:23,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:23,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:23,722 INFO L87 Difference]: Start difference. First operand 471 states and 729 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) [2022-07-13 11:39:24,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:24,559 INFO L93 Difference]: Finished difference Result 994 states and 1534 transitions. [2022-07-13 11:39:24,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:24,559 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 [2022-07-13 11:39:24,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:24,561 INFO L225 Difference]: With dead ends: 994 [2022-07-13 11:39:24,561 INFO L226 Difference]: Without dead ends: 542 [2022-07-13 11:39:24,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:24,562 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 106 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 316 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 [2022-07-13 11:39:24,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 316 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:39:24,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-07-13 11:39:24,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 473. [2022-07-13 11:39:24,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.5508474576271187) internal successors, (732), 472 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:24,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 732 transitions. [2022-07-13 11:39:24,569 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 732 transitions. Word has length 126 [2022-07-13 11:39:24,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:24,569 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 732 transitions. [2022-07-13 11:39:24,569 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) [2022-07-13 11:39:24,569 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 732 transitions. [2022-07-13 11:39:24,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-13 11:39:24,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:24,577 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] [2022-07-13 11:39:24,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 11:39:24,578 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:24,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:24,578 INFO L85 PathProgramCache]: Analyzing trace with hash -474729006, now seen corresponding path program 1 times [2022-07-13 11:39:24,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:24,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204771398] [2022-07-13 11:39:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:24,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:24,657 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-13 11:39:24,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:24,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204771398] [2022-07-13 11:39:24,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204771398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:24,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:24,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:39:24,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655162605] [2022-07-13 11:39:24,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:24,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:39:24,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:24,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:39:24,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:24,659 INFO L87 Difference]: Start difference. First operand 473 states and 732 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) [2022-07-13 11:39:26,222 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:26,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:26,813 INFO L93 Difference]: Finished difference Result 935 states and 1452 transitions. [2022-07-13 11:39:26,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 11:39:26,813 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 131 [2022-07-13 11:39:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:26,815 INFO L225 Difference]: With dead ends: 935 [2022-07-13 11:39:26,815 INFO L226 Difference]: Without dead ends: 483 [2022-07-13 11:39:26,815 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 [2022-07-13 11:39:26,816 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 144 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:26,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 338 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 11:39:26,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-07-13 11:39:26,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 482. [2022-07-13 11:39:26,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.5446985446985446) internal successors, (743), 481 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:26,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 743 transitions. [2022-07-13 11:39:26,822 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 743 transitions. Word has length 131 [2022-07-13 11:39:26,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:26,822 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 743 transitions. [2022-07-13 11:39:26,822 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) [2022-07-13 11:39:26,823 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 743 transitions. [2022-07-13 11:39:26,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-13 11:39:26,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:26,824 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] [2022-07-13 11:39:26,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 11:39:26,824 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:26,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:26,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1091943493, now seen corresponding path program 1 times [2022-07-13 11:39:26,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:26,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965293744] [2022-07-13 11:39:26,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:26,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:26,899 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-13 11:39:26,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:26,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965293744] [2022-07-13 11:39:26,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965293744] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:26,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:26,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:26,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732087062] [2022-07-13 11:39:26,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:26,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:26,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:26,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:26,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:26,901 INFO L87 Difference]: Start difference. First operand 482 states and 743 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) [2022-07-13 11:39:27,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:27,566 INFO L93 Difference]: Finished difference Result 1002 states and 1542 transitions. [2022-07-13 11:39:27,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:27,567 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 132 [2022-07-13 11:39:27,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:27,568 INFO L225 Difference]: With dead ends: 1002 [2022-07-13 11:39:27,568 INFO L226 Difference]: Without dead ends: 541 [2022-07-13 11:39:27,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:27,569 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 128 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:27,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 354 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-13 11:39:27,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 482. [2022-07-13 11:39:27,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.525987525987526) internal successors, (734), 481 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) [2022-07-13 11:39:27,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 734 transitions. [2022-07-13 11:39:27,578 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 734 transitions. Word has length 132 [2022-07-13 11:39:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:27,579 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 734 transitions. [2022-07-13 11:39:27,579 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) [2022-07-13 11:39:27,579 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 734 transitions. [2022-07-13 11:39:27,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-13 11:39:27,585 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:27,585 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] [2022-07-13 11:39:27,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 11:39:27,585 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:27,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:27,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2126146282, now seen corresponding path program 1 times [2022-07-13 11:39:27,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:27,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683025465] [2022-07-13 11:39:27,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:27,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:27,666 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-13 11:39:27,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:27,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683025465] [2022-07-13 11:39:27,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683025465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:27,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:27,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:27,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678219468] [2022-07-13 11:39:27,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:27,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:27,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:27,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:27,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:27,669 INFO L87 Difference]: Start difference. First operand 482 states and 734 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:29,157 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:29,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:29,390 INFO L93 Difference]: Finished difference Result 977 states and 1489 transitions. [2022-07-13 11:39:29,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:29,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-07-13 11:39:29,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:29,392 INFO L225 Difference]: With dead ends: 977 [2022-07-13 11:39:29,392 INFO L226 Difference]: Without dead ends: 516 [2022-07-13 11:39:29,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:29,393 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 64 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:29,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 467 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 11:39:29,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-07-13 11:39:29,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 482. [2022-07-13 11:39:29,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.523908523908524) internal successors, (733), 481 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:29,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 733 transitions. [2022-07-13 11:39:29,401 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 733 transitions. Word has length 138 [2022-07-13 11:39:29,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:29,401 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 733 transitions. [2022-07-13 11:39:29,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:29,401 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 733 transitions. [2022-07-13 11:39:29,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-13 11:39:29,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:29,402 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] [2022-07-13 11:39:29,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 11:39:29,402 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:29,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:29,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1366121880, now seen corresponding path program 1 times [2022-07-13 11:39:29,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:29,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56686974] [2022-07-13 11:39:29,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:29,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:29,501 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-13 11:39:29,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:29,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56686974] [2022-07-13 11:39:29,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56686974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:29,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:29,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:29,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290371775] [2022-07-13 11:39:29,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:29,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:29,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:29,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:29,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:29,503 INFO L87 Difference]: Start difference. First operand 482 states and 733 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:31,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:31,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:31,662 INFO L93 Difference]: Finished difference Result 1002 states and 1522 transitions. [2022-07-13 11:39:31,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:31,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 [2022-07-13 11:39:31,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:31,664 INFO L225 Difference]: With dead ends: 1002 [2022-07-13 11:39:31,665 INFO L226 Difference]: Without dead ends: 541 [2022-07-13 11:39:31,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:31,666 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 115 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:31,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 364 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 11:39:31,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-13 11:39:31,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 482. [2022-07-13 11:39:31,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.5093555093555093) internal successors, (726), 481 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 726 transitions. [2022-07-13 11:39:31,676 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 726 transitions. Word has length 139 [2022-07-13 11:39:31,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:31,676 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 726 transitions. [2022-07-13 11:39:31,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:31,677 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 726 transitions. [2022-07-13 11:39:31,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-13 11:39:31,677 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:31,678 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] [2022-07-13 11:39:31,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 11:39:31,678 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:31,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:31,678 INFO L85 PathProgramCache]: Analyzing trace with hash 984886832, now seen corresponding path program 1 times [2022-07-13 11:39:31,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:31,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274183184] [2022-07-13 11:39:31,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:31,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:31,762 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-13 11:39:31,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:31,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274183184] [2022-07-13 11:39:31,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274183184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:31,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:31,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:31,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541322863] [2022-07-13 11:39:31,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:31,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:31,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:31,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:31,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:31,764 INFO L87 Difference]: Start difference. First operand 482 states and 726 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) [2022-07-13 11:39:32,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:32,859 INFO L93 Difference]: Finished difference Result 975 states and 1471 transitions. [2022-07-13 11:39:32,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:32,860 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 [2022-07-13 11:39:32,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:32,861 INFO L225 Difference]: With dead ends: 975 [2022-07-13 11:39:32,861 INFO L226 Difference]: Without dead ends: 514 [2022-07-13 11:39:32,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:32,862 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 60 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:32,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 479 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 11:39:32,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-07-13 11:39:32,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 482. [2022-07-13 11:39:32,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.5072765072765073) internal successors, (725), 481 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:32,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 725 transitions. [2022-07-13 11:39:32,871 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 725 transitions. Word has length 139 [2022-07-13 11:39:32,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:32,872 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 725 transitions. [2022-07-13 11:39:32,872 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) [2022-07-13 11:39:32,872 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 725 transitions. [2022-07-13 11:39:32,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-13 11:39:32,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:32,873 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] [2022-07-13 11:39:32,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 11:39:32,873 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:32,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:32,874 INFO L85 PathProgramCache]: Analyzing trace with hash 309390678, now seen corresponding path program 1 times [2022-07-13 11:39:32,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:32,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166893175] [2022-07-13 11:39:32,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:32,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:32,975 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-13 11:39:32,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:32,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166893175] [2022-07-13 11:39:32,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166893175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:32,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:32,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:32,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917052086] [2022-07-13 11:39:32,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:32,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:32,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:32,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:32,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:32,977 INFO L87 Difference]: Start difference. First operand 482 states and 725 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:33,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:33,533 INFO L93 Difference]: Finished difference Result 982 states and 1481 transitions. [2022-07-13 11:39:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:33,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-07-13 11:39:33,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:33,535 INFO L225 Difference]: With dead ends: 982 [2022-07-13 11:39:33,535 INFO L226 Difference]: Without dead ends: 521 [2022-07-13 11:39:33,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:33,537 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 27 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:33,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 555 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:39:33,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-07-13 11:39:33,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 508. [2022-07-13 11:39:33,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.5029585798816567) internal successors, (762), 507 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:33,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 762 transitions. [2022-07-13 11:39:33,546 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 762 transitions. Word has length 139 [2022-07-13 11:39:33,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:33,547 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 762 transitions. [2022-07-13 11:39:33,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:33,547 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 762 transitions. [2022-07-13 11:39:33,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-13 11:39:33,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:33,548 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] [2022-07-13 11:39:33,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 11:39:33,549 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:33,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:33,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1970724841, now seen corresponding path program 1 times [2022-07-13 11:39:33,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:33,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4880225] [2022-07-13 11:39:33,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:33,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-13 11:39:33,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:33,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4880225] [2022-07-13 11:39:33,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4880225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:33,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:33,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:33,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174587951] [2022-07-13 11:39:33,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:33,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:33,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:33,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:33,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:33,639 INFO L87 Difference]: Start difference. First operand 508 states and 762 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:34,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:34,240 INFO L93 Difference]: Finished difference Result 1096 states and 1645 transitions. [2022-07-13 11:39:34,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:34,241 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 141 [2022-07-13 11:39:34,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:34,242 INFO L225 Difference]: With dead ends: 1096 [2022-07-13 11:39:34,242 INFO L226 Difference]: Without dead ends: 609 [2022-07-13 11:39:34,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:34,243 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 111 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:34,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 354 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:34,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-07-13 11:39:34,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 536. [2022-07-13 11:39:34,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.4897196261682244) internal successors, (797), 535 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) [2022-07-13 11:39:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 797 transitions. [2022-07-13 11:39:34,251 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 797 transitions. Word has length 141 [2022-07-13 11:39:34,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:34,252 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 797 transitions. [2022-07-13 11:39:34,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 797 transitions. [2022-07-13 11:39:34,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-13 11:39:34,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:34,253 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] [2022-07-13 11:39:34,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 11:39:34,253 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:34,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:34,254 INFO L85 PathProgramCache]: Analyzing trace with hash 155364701, now seen corresponding path program 1 times [2022-07-13 11:39:34,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:34,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451554172] [2022-07-13 11:39:34,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:34,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:34,345 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-13 11:39:34,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:34,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451554172] [2022-07-13 11:39:34,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451554172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:34,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:34,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:34,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030020908] [2022-07-13 11:39:34,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:34,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:34,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:34,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:34,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:34,347 INFO L87 Difference]: Start difference. First operand 536 states and 797 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:35,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:35,168 INFO L93 Difference]: Finished difference Result 1075 states and 1600 transitions. [2022-07-13 11:39:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:35,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-07-13 11:39:35,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:35,170 INFO L225 Difference]: With dead ends: 1075 [2022-07-13 11:39:35,170 INFO L226 Difference]: Without dead ends: 560 [2022-07-13 11:39:35,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:35,171 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 51 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:35,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 497 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:39:35,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-07-13 11:39:35,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 536. [2022-07-13 11:39:35,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.4878504672897197) internal successors, (796), 535 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:35,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 796 transitions. [2022-07-13 11:39:35,186 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 796 transitions. Word has length 142 [2022-07-13 11:39:35,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:35,186 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 796 transitions. [2022-07-13 11:39:35,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:35,187 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 796 transitions. [2022-07-13 11:39:35,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 11:39:35,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:35,190 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] [2022-07-13 11:39:35,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-13 11:39:35,191 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:35,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:35,191 INFO L85 PathProgramCache]: Analyzing trace with hash -773365661, now seen corresponding path program 1 times [2022-07-13 11:39:35,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:35,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440678041] [2022-07-13 11:39:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:35,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-13 11:39:35,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:35,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440678041] [2022-07-13 11:39:35,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440678041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:35,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:35,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:35,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628287526] [2022-07-13 11:39:35,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:35,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:35,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:35,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:35,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:35,269 INFO L87 Difference]: Start difference. First operand 536 states and 796 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) [2022-07-13 11:39:35,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:35,771 INFO L93 Difference]: Finished difference Result 1075 states and 1598 transitions. [2022-07-13 11:39:35,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:35,772 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 145 [2022-07-13 11:39:35,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:35,774 INFO L225 Difference]: With dead ends: 1075 [2022-07-13 11:39:35,774 INFO L226 Difference]: Without dead ends: 560 [2022-07-13 11:39:35,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:35,775 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 53 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:35,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 497 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:39:35,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-07-13 11:39:35,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 536. [2022-07-13 11:39:35,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.485981308411215) internal successors, (795), 535 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:35,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 795 transitions. [2022-07-13 11:39:35,785 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 795 transitions. Word has length 145 [2022-07-13 11:39:35,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:35,785 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 795 transitions. [2022-07-13 11:39:35,785 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) [2022-07-13 11:39:35,785 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 795 transitions. [2022-07-13 11:39:35,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 11:39:35,787 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:35,788 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] [2022-07-13 11:39:35,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 11:39:35,788 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:35,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:35,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1914296137, now seen corresponding path program 1 times [2022-07-13 11:39:35,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:35,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851067984] [2022-07-13 11:39:35,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:35,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-13 11:39:35,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:35,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851067984] [2022-07-13 11:39:35,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851067984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:35,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:35,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:35,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946636072] [2022-07-13 11:39:35,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:35,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:35,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:35,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:35,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:35,890 INFO L87 Difference]: Start difference. First operand 536 states and 795 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) [2022-07-13 11:39:36,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:36,546 INFO L93 Difference]: Finished difference Result 1110 states and 1646 transitions. [2022-07-13 11:39:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:36,546 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 [2022-07-13 11:39:36,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:36,547 INFO L225 Difference]: With dead ends: 1110 [2022-07-13 11:39:36,547 INFO L226 Difference]: Without dead ends: 595 [2022-07-13 11:39:36,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:36,548 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 112 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:36,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 338 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:36,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-07-13 11:39:36,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 536. [2022-07-13 11:39:36,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.4710280373831777) internal successors, (787), 535 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:36,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 787 transitions. [2022-07-13 11:39:36,557 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 787 transitions. Word has length 146 [2022-07-13 11:39:36,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:36,557 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 787 transitions. [2022-07-13 11:39:36,557 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) [2022-07-13 11:39:36,557 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 787 transitions. [2022-07-13 11:39:36,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-13 11:39:36,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:36,558 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] [2022-07-13 11:39:36,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 11:39:36,559 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:36,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:36,559 INFO L85 PathProgramCache]: Analyzing trace with hash 436551973, now seen corresponding path program 1 times [2022-07-13 11:39:36,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:36,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208171181] [2022-07-13 11:39:36,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:36,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 11:39:36,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:36,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208171181] [2022-07-13 11:39:36,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208171181] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:36,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:36,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:36,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192608737] [2022-07-13 11:39:36,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:36,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:36,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:36,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:36,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:36,680 INFO L87 Difference]: Start difference. First operand 536 states and 787 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:37,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:37,768 INFO L93 Difference]: Finished difference Result 1073 states and 1577 transitions. [2022-07-13 11:39:37,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:37,768 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 148 [2022-07-13 11:39:37,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:37,770 INFO L225 Difference]: With dead ends: 1073 [2022-07-13 11:39:37,770 INFO L226 Difference]: Without dead ends: 558 [2022-07-13 11:39:37,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:37,771 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 41 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:37,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 503 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 11:39:37,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-07-13 11:39:37,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 536. [2022-07-13 11:39:37,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.469158878504673) internal successors, (786), 535 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 786 transitions. [2022-07-13 11:39:37,779 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 786 transitions. Word has length 148 [2022-07-13 11:39:37,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:37,779 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 786 transitions. [2022-07-13 11:39:37,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 786 transitions. [2022-07-13 11:39:37,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-13 11:39:37,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:37,781 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] [2022-07-13 11:39:37,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 11:39:37,781 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:37,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:37,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1682736421, now seen corresponding path program 1 times [2022-07-13 11:39:37,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:37,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603775029] [2022-07-13 11:39:37,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:37,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-13 11:39:37,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:37,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603775029] [2022-07-13 11:39:37,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603775029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:37,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:37,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:37,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894330195] [2022-07-13 11:39:37,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:37,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:37,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:37,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:37,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:37,864 INFO L87 Difference]: Start difference. First operand 536 states and 786 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:39,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:39,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:39,812 INFO L93 Difference]: Finished difference Result 1152 states and 1692 transitions. [2022-07-13 11:39:39,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:39,813 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 148 [2022-07-13 11:39:39,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:39,814 INFO L225 Difference]: With dead ends: 1152 [2022-07-13 11:39:39,814 INFO L226 Difference]: Without dead ends: 637 [2022-07-13 11:39:39,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:39,816 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 105 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:39,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 338 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 11:39:39,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-07-13 11:39:39,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 569. [2022-07-13 11:39:39,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.4630281690140845) internal successors, (831), 568 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:39,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 831 transitions. [2022-07-13 11:39:39,825 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 831 transitions. Word has length 148 [2022-07-13 11:39:39,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:39,825 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 831 transitions. [2022-07-13 11:39:39,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:39,825 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 831 transitions. [2022-07-13 11:39:39,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-13 11:39:39,826 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:39,827 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] [2022-07-13 11:39:39,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-13 11:39:39,827 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:39,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:39,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1171061050, now seen corresponding path program 1 times [2022-07-13 11:39:39,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:39,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572026614] [2022-07-13 11:39:39,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:39,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-13 11:39:39,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:39,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572026614] [2022-07-13 11:39:39,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572026614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:39,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:39,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:39,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988115296] [2022-07-13 11:39:39,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:39,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:39,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:39,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:39,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:39,916 INFO L87 Difference]: Start difference. First operand 569 states and 831 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:40,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:40,497 INFO L93 Difference]: Finished difference Result 1176 states and 1718 transitions. [2022-07-13 11:39:40,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:40,497 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 [2022-07-13 11:39:40,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:40,499 INFO L225 Difference]: With dead ends: 1176 [2022-07-13 11:39:40,499 INFO L226 Difference]: Without dead ends: 628 [2022-07-13 11:39:40,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:40,500 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 104 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:40,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 338 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:40,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-07-13 11:39:40,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 569. [2022-07-13 11:39:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.454225352112676) internal successors, (826), 568 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:40,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 826 transitions. [2022-07-13 11:39:40,523 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 826 transitions. Word has length 149 [2022-07-13 11:39:40,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:40,523 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 826 transitions. [2022-07-13 11:39:40,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:40,524 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 826 transitions. [2022-07-13 11:39:40,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-13 11:39:40,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:40,525 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] [2022-07-13 11:39:40,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-13 11:39:40,525 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:40,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:40,525 INFO L85 PathProgramCache]: Analyzing trace with hash -2111739750, now seen corresponding path program 1 times [2022-07-13 11:39:40,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:40,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014134592] [2022-07-13 11:39:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:40,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 11:39:40,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:40,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014134592] [2022-07-13 11:39:40,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014134592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:40,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:40,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:40,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337685945] [2022-07-13 11:39:40,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:40,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:40,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:40,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:40,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:40,606 INFO L87 Difference]: Start difference. First operand 569 states and 826 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) [2022-07-13 11:39:41,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:41,234 INFO L93 Difference]: Finished difference Result 1176 states and 1708 transitions. [2022-07-13 11:39:41,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:41,235 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 [2022-07-13 11:39:41,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:41,236 INFO L225 Difference]: With dead ends: 1176 [2022-07-13 11:39:41,236 INFO L226 Difference]: Without dead ends: 628 [2022-07-13 11:39:41,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:41,237 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 101 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:41,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 338 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:41,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-07-13 11:39:41,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 569. [2022-07-13 11:39:41,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.4454225352112675) internal successors, (821), 568 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 821 transitions. [2022-07-13 11:39:41,247 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 821 transitions. Word has length 149 [2022-07-13 11:39:41,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:41,247 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 821 transitions. [2022-07-13 11:39:41,247 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) [2022-07-13 11:39:41,247 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 821 transitions. [2022-07-13 11:39:41,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-13 11:39:41,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:41,248 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] [2022-07-13 11:39:41,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-13 11:39:41,249 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:41,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:41,249 INFO L85 PathProgramCache]: Analyzing trace with hash 111887274, now seen corresponding path program 1 times [2022-07-13 11:39:41,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:41,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515271794] [2022-07-13 11:39:41,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:41,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 11:39:41,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:41,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515271794] [2022-07-13 11:39:41,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515271794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:41,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:41,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:41,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609888533] [2022-07-13 11:39:41,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:41,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:41,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:41,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:41,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:41,334 INFO L87 Difference]: Start difference. First operand 569 states and 821 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:42,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:42,446 INFO L93 Difference]: Finished difference Result 1176 states and 1698 transitions. [2022-07-13 11:39:42,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:42,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 158 [2022-07-13 11:39:42,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:42,448 INFO L225 Difference]: With dead ends: 1176 [2022-07-13 11:39:42,448 INFO L226 Difference]: Without dead ends: 628 [2022-07-13 11:39:42,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:42,449 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 97 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:42,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 338 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 11:39:42,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-07-13 11:39:42,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 566. [2022-07-13 11:39:42,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.4424778761061947) internal successors, (815), 565 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:42,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 815 transitions. [2022-07-13 11:39:42,465 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 815 transitions. Word has length 158 [2022-07-13 11:39:42,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:42,465 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 815 transitions. [2022-07-13 11:39:42,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:42,466 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 815 transitions. [2022-07-13 11:39:42,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-13 11:39:42,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:42,467 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] [2022-07-13 11:39:42,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-13 11:39:42,467 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:42,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:42,467 INFO L85 PathProgramCache]: Analyzing trace with hash 138370680, now seen corresponding path program 1 times [2022-07-13 11:39:42,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:42,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986839391] [2022-07-13 11:39:42,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:42,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-13 11:39:42,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:42,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986839391] [2022-07-13 11:39:42,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986839391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:42,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:42,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:39:42,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401003557] [2022-07-13 11:39:42,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:42,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:39:42,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:42,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:39:42,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:39:42,554 INFO L87 Difference]: Start difference. First operand 566 states and 815 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:42,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:42,584 INFO L93 Difference]: Finished difference Result 1650 states and 2389 transitions. [2022-07-13 11:39:42,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:39:42,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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 166 [2022-07-13 11:39:42,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:42,587 INFO L225 Difference]: With dead ends: 1650 [2022-07-13 11:39:42,587 INFO L226 Difference]: Without dead ends: 1105 [2022-07-13 11:39:42,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:39:42,588 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 139 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:42,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 557 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:39:42,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-07-13 11:39:42,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1105. [2022-07-13 11:39:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 1.4420289855072463) internal successors, (1592), 1104 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:42,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1592 transitions. [2022-07-13 11:39:42,606 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1592 transitions. Word has length 166 [2022-07-13 11:39:42,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:42,606 INFO L495 AbstractCegarLoop]: Abstraction has 1105 states and 1592 transitions. [2022-07-13 11:39:42,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:42,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1592 transitions. [2022-07-13 11:39:42,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 11:39:42,608 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:42,608 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] [2022-07-13 11:39:42,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-13 11:39:42,608 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:42,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash 234885032, now seen corresponding path program 1 times [2022-07-13 11:39:42,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:42,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973320580] [2022-07-13 11:39:42,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:42,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 11:39:42,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:42,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973320580] [2022-07-13 11:39:42,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973320580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:42,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:42,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:39:42,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204883778] [2022-07-13 11:39:42,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:42,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:39:42,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:42,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:39:42,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:39:42,685 INFO L87 Difference]: Start difference. First operand 1105 states and 1592 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:42,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:42,729 INFO L93 Difference]: Finished difference Result 2693 states and 3889 transitions. [2022-07-13 11:39:42,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:39:42,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 [2022-07-13 11:39:42,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:42,734 INFO L225 Difference]: With dead ends: 2693 [2022-07-13 11:39:42,734 INFO L226 Difference]: Without dead ends: 1609 [2022-07-13 11:39:42,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:39:42,736 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 132 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:42,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 487 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:39:42,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2022-07-13 11:39:42,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1607. [2022-07-13 11:39:42,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1606 states have (on average 1.4414694894146949) internal successors, (2315), 1606 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:42,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2315 transitions. [2022-07-13 11:39:42,761 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2315 transitions. Word has length 167 [2022-07-13 11:39:42,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:42,762 INFO L495 AbstractCegarLoop]: Abstraction has 1607 states and 2315 transitions. [2022-07-13 11:39:42,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:42,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2315 transitions. [2022-07-13 11:39:42,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 11:39:42,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:42,764 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] [2022-07-13 11:39:42,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-13 11:39:42,764 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:42,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:42,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1802673043, now seen corresponding path program 1 times [2022-07-13 11:39:42,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:42,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404730341] [2022-07-13 11:39:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:42,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:42,845 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-13 11:39:42,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:42,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404730341] [2022-07-13 11:39:42,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404730341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:42,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:42,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:39:42,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412639505] [2022-07-13 11:39:42,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:42,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:39:42,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:42,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:39:42,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:39:42,847 INFO L87 Difference]: Start difference. First operand 1607 states and 2315 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) [2022-07-13 11:39:42,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:42,891 INFO L93 Difference]: Finished difference Result 3688 states and 5325 transitions. [2022-07-13 11:39:42,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:39:42,891 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 168 [2022-07-13 11:39:42,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:42,896 INFO L225 Difference]: With dead ends: 3688 [2022-07-13 11:39:42,897 INFO L226 Difference]: Without dead ends: 2102 [2022-07-13 11:39:42,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:39:42,898 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 134 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:42,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 503 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:39:42,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2022-07-13 11:39:42,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 2098. [2022-07-13 11:39:42,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 2097 states have (on average 1.4430138292799237) internal successors, (3026), 2097 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 3026 transitions. [2022-07-13 11:39:42,943 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 3026 transitions. Word has length 168 [2022-07-13 11:39:42,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:42,944 INFO L495 AbstractCegarLoop]: Abstraction has 2098 states and 3026 transitions. [2022-07-13 11:39:42,944 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) [2022-07-13 11:39:42,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 3026 transitions. [2022-07-13 11:39:42,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 11:39:42,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:42,947 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] [2022-07-13 11:39:42,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-13 11:39:42,947 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:42,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:42,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1368167445, now seen corresponding path program 1 times [2022-07-13 11:39:42,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:42,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377121033] [2022-07-13 11:39:42,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:42,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-13 11:39:43,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:43,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377121033] [2022-07-13 11:39:43,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377121033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:43,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:43,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:39:43,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683073023] [2022-07-13 11:39:43,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:43,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:39:43,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:43,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:39:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:39:43,029 INFO L87 Difference]: Start difference. First operand 2098 states and 3026 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:43,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:43,080 INFO L93 Difference]: Finished difference Result 4202 states and 6064 transitions. [2022-07-13 11:39:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:39:43,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 [2022-07-13 11:39:43,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:43,085 INFO L225 Difference]: With dead ends: 4202 [2022-07-13 11:39:43,085 INFO L226 Difference]: Without dead ends: 2125 [2022-07-13 11:39:43,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:39:43,092 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:43,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 404 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:39:43,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2022-07-13 11:39:43,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2125. [2022-07-13 11:39:43,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2125 states, 2124 states have (on average 1.4411487758945387) internal successors, (3061), 2124 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2125 states to 2125 states and 3061 transitions. [2022-07-13 11:39:43,131 INFO L78 Accepts]: Start accepts. Automaton has 2125 states and 3061 transitions. Word has length 168 [2022-07-13 11:39:43,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:43,132 INFO L495 AbstractCegarLoop]: Abstraction has 2125 states and 3061 transitions. [2022-07-13 11:39:43,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2125 states and 3061 transitions. [2022-07-13 11:39:43,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 11:39:43,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:43,135 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] [2022-07-13 11:39:43,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-13 11:39:43,135 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:43,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:43,135 INFO L85 PathProgramCache]: Analyzing trace with hash -995674217, now seen corresponding path program 1 times [2022-07-13 11:39:43,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:43,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770379244] [2022-07-13 11:39:43,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:43,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-13 11:39:43,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:43,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770379244] [2022-07-13 11:39:43,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770379244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:43,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:43,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:39:43,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554696014] [2022-07-13 11:39:43,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:43,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:39:43,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:43,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:39:43,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:39:43,206 INFO L87 Difference]: Start difference. First operand 2125 states and 3061 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:43,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:43,240 INFO L93 Difference]: Finished difference Result 4231 states and 6100 transitions. [2022-07-13 11:39:43,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:39:43,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 [2022-07-13 11:39:43,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:43,255 INFO L225 Difference]: With dead ends: 4231 [2022-07-13 11:39:43,255 INFO L226 Difference]: Without dead ends: 2127 [2022-07-13 11:39:43,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:39:43,257 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:43,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 383 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:39:43,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2022-07-13 11:39:43,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 2127. [2022-07-13 11:39:43,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2126 states have (on average 1.4407337723424272) internal successors, (3063), 2126 states have internal predecessors, (3063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:43,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 3063 transitions. [2022-07-13 11:39:43,293 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 3063 transitions. Word has length 168 [2022-07-13 11:39:43,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:43,293 INFO L495 AbstractCegarLoop]: Abstraction has 2127 states and 3063 transitions. [2022-07-13 11:39:43,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:43,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 3063 transitions. [2022-07-13 11:39:43,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 11:39:43,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:43,295 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:43,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-13 11:39:43,296 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:43,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:43,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1102630147, now seen corresponding path program 1 times [2022-07-13 11:39:43,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:43,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63636803] [2022-07-13 11:39:43,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:43,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-13 11:39:43,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:43,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63636803] [2022-07-13 11:39:43,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63636803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:43,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:43,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:43,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285996419] [2022-07-13 11:39:43,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:43,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:43,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:43,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:43,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:43,392 INFO L87 Difference]: Start difference. First operand 2127 states and 3063 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:43,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:43,944 INFO L93 Difference]: Finished difference Result 4616 states and 6625 transitions. [2022-07-13 11:39:43,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:43,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 179 [2022-07-13 11:39:43,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:43,949 INFO L225 Difference]: With dead ends: 4616 [2022-07-13 11:39:43,949 INFO L226 Difference]: Without dead ends: 2512 [2022-07-13 11:39:43,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:43,951 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 104 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:43,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 346 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:39:43,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states. [2022-07-13 11:39:43,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 2247. [2022-07-13 11:39:43,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.4305431878895816) internal successors, (3213), 2246 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:43,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3213 transitions. [2022-07-13 11:39:43,994 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3213 transitions. Word has length 179 [2022-07-13 11:39:43,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:43,994 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3213 transitions. [2022-07-13 11:39:43,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:43,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3213 transitions. [2022-07-13 11:39:43,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-13 11:39:43,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:43,996 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:43,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-13 11:39:43,997 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:43,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:43,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1645851351, now seen corresponding path program 1 times [2022-07-13 11:39:43,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:43,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252498477] [2022-07-13 11:39:43,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:43,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-13 11:39:44,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:44,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252498477] [2022-07-13 11:39:44,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252498477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:44,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:44,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:44,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008931981] [2022-07-13 11:39:44,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:44,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:44,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:44,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:44,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:44,098 INFO L87 Difference]: Start difference. First operand 2247 states and 3213 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:44,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:44,810 INFO L93 Difference]: Finished difference Result 4556 states and 6513 transitions. [2022-07-13 11:39:44,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:44,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 180 [2022-07-13 11:39:44,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:44,814 INFO L225 Difference]: With dead ends: 4556 [2022-07-13 11:39:44,814 INFO L226 Difference]: Without dead ends: 2332 [2022-07-13 11:39:44,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:44,816 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 59 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:44,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 540 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:39:44,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2022-07-13 11:39:44,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 2247. [2022-07-13 11:39:44,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.429207479964381) internal successors, (3210), 2246 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:44,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3210 transitions. [2022-07-13 11:39:44,851 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3210 transitions. Word has length 180 [2022-07-13 11:39:44,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:44,851 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3210 transitions. [2022-07-13 11:39:44,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:44,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3210 transitions. [2022-07-13 11:39:44,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-13 11:39:44,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:44,854 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:44,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-13 11:39:44,854 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:44,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:44,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1897594940, now seen corresponding path program 1 times [2022-07-13 11:39:44,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:44,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990934481] [2022-07-13 11:39:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:44,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:44,940 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-13 11:39:44,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:44,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990934481] [2022-07-13 11:39:44,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990934481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:44,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:44,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:44,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60782885] [2022-07-13 11:39:44,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:44,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:44,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:44,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:44,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:44,942 INFO L87 Difference]: Start difference. First operand 2247 states and 3210 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:45,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:45,548 INFO L93 Difference]: Finished difference Result 4688 states and 6683 transitions. [2022-07-13 11:39:45,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:45,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 183 [2022-07-13 11:39:45,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:45,552 INFO L225 Difference]: With dead ends: 4688 [2022-07-13 11:39:45,552 INFO L226 Difference]: Without dead ends: 2464 [2022-07-13 11:39:45,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:45,554 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 105 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:45,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 342 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:45,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2022-07-13 11:39:45,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2247. [2022-07-13 11:39:45,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.4158504007123776) internal successors, (3180), 2246 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:45,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3180 transitions. [2022-07-13 11:39:45,604 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3180 transitions. Word has length 183 [2022-07-13 11:39:45,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:45,604 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3180 transitions. [2022-07-13 11:39:45,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:45,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3180 transitions. [2022-07-13 11:39:45,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 11:39:45,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:45,606 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:45,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-13 11:39:45,607 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:45,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:45,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1707338316, now seen corresponding path program 1 times [2022-07-13 11:39:45,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:45,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473506675] [2022-07-13 11:39:45,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:45,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:45,691 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-13 11:39:45,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:45,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473506675] [2022-07-13 11:39:45,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473506675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:45,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:45,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:45,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950294871] [2022-07-13 11:39:45,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:45,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:45,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:45,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:45,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:45,693 INFO L87 Difference]: Start difference. First operand 2247 states and 3180 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:46,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:46,743 INFO L93 Difference]: Finished difference Result 4526 states and 6402 transitions. [2022-07-13 11:39:46,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:46,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2022-07-13 11:39:46,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:46,748 INFO L225 Difference]: With dead ends: 4526 [2022-07-13 11:39:46,748 INFO L226 Difference]: Without dead ends: 2302 [2022-07-13 11:39:46,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:46,750 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 43 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:46,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 560 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 11:39:46,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2022-07-13 11:39:46,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2247. [2022-07-13 11:39:46,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.4145146927871772) internal successors, (3177), 2246 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:46,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3177 transitions. [2022-07-13 11:39:46,812 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3177 transitions. Word has length 189 [2022-07-13 11:39:46,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:46,812 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3177 transitions. [2022-07-13 11:39:46,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:46,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3177 transitions. [2022-07-13 11:39:46,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 11:39:46,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:46,814 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:46,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-13 11:39:46,815 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:46,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:46,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1760759993, now seen corresponding path program 1 times [2022-07-13 11:39:46,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:46,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154405300] [2022-07-13 11:39:46,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:46,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:46,915 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-13 11:39:46,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:46,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154405300] [2022-07-13 11:39:46,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154405300] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:46,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:46,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:46,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775586421] [2022-07-13 11:39:46,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:46,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:46,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:46,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:46,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:46,917 INFO L87 Difference]: Start difference. First operand 2247 states and 3177 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:48,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:48,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:48,954 INFO L93 Difference]: Finished difference Result 4688 states and 6617 transitions. [2022-07-13 11:39:48,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:48,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2022-07-13 11:39:48,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:48,957 INFO L225 Difference]: With dead ends: 4688 [2022-07-13 11:39:48,957 INFO L226 Difference]: Without dead ends: 2464 [2022-07-13 11:39:48,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:48,959 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 103 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:48,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 346 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 11:39:48,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2022-07-13 11:39:48,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2247. [2022-07-13 11:39:48,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.404274265360641) internal successors, (3154), 2246 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:48,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3154 transitions. [2022-07-13 11:39:48,994 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3154 transitions. Word has length 189 [2022-07-13 11:39:48,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:48,995 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3154 transitions. [2022-07-13 11:39:48,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:48,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3154 transitions. [2022-07-13 11:39:48,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-13 11:39:48,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:48,997 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:48,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-13 11:39:48,997 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:48,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash 867563374, now seen corresponding path program 1 times [2022-07-13 11:39:48,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:48,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515773791] [2022-07-13 11:39:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:48,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-07-13 11:39:49,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:49,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515773791] [2022-07-13 11:39:49,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515773791] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:49,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:49,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:39:49,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458744334] [2022-07-13 11:39:49,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:49,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:39:49,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:49,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:39:49,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:49,309 INFO L87 Difference]: Start difference. First operand 2247 states and 3154 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:50,931 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:51,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:51,611 INFO L93 Difference]: Finished difference Result 4491 states and 6304 transitions. [2022-07-13 11:39:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 11:39:51,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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 191 [2022-07-13 11:39:51,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:51,614 INFO L225 Difference]: With dead ends: 4491 [2022-07-13 11:39:51,614 INFO L226 Difference]: Without dead ends: 2247 [2022-07-13 11:39:51,616 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 [2022-07-13 11:39:51,616 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 7 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:51,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 647 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 11:39:51,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2022-07-13 11:39:51,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 2247. [2022-07-13 11:39:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.4038290293855744) internal successors, (3153), 2246 states have internal predecessors, (3153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:51,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3153 transitions. [2022-07-13 11:39:51,677 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3153 transitions. Word has length 191 [2022-07-13 11:39:51,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:51,678 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3153 transitions. [2022-07-13 11:39:51,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:51,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3153 transitions. [2022-07-13 11:39:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-13 11:39:51,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:51,680 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:51,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-13 11:39:51,680 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:51,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:51,681 INFO L85 PathProgramCache]: Analyzing trace with hash 990845040, now seen corresponding path program 1 times [2022-07-13 11:39:51,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:51,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258384914] [2022-07-13 11:39:51,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:51,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:53,081 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 26 proven. 183 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-07-13 11:39:53,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:53,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258384914] [2022-07-13 11:39:53,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258384914] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:39:53,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479568320] [2022-07-13 11:39:53,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:53,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:39:53,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:39:53,084 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:39:53,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 11:39:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:54,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 163 conjunts are in the unsatisfiable core [2022-07-13 11:39:54,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:39:54,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:54,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:54,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:54,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:54,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:55,047 INFO L356 Elim1Store]: treesize reduction 1040, result has 8.0 percent of original size [2022-07-13 11:39:55,049 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 31556846 treesize of output 6795388 [2022-07-13 11:39:56,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:56,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:56,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:56,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:56,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:13,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:13,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:13,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:13,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:13,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:13,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:21,777 INFO L244 Elim1Store]: Index analysis took 8995 ms