./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.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.08.i.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa372dfad40872d8fec1a0f5d039a19d9bc91cfd74858ce24ec80eeafb27f017 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 11:38:34,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:38:34,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:38:34,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:38:34,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:38:34,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:38:34,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:38:34,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:38:34,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:38:34,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:38:34,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:38:34,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:38:34,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:38:34,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:38:34,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:38:34,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:38:34,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:38:34,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:38:34,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:38:34,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:38:34,129 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:38:34,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:38:34,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:38:34,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:38:34,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:38:34,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:38:34,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:38:34,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:38:34,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:38:34,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:38:34,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:38:34,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:38:34,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:38:34,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:38:34,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:38:34,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:38:34,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:38:34,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:38:34,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:38:34,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:38:34,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:38:34,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:38:34,140 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 11:38:34,154 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:38:34,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:38:34,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:38:34,155 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:38:34,156 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:38:34,156 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:38:34,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:38:34,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:38:34,157 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:38:34,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:38:34,157 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:38:34,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 11:38:34,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:38:34,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:38:34,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:38:34,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:38:34,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:38:34,159 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:38:34,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:38:34,159 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:38:34,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:38:34,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:38:34,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:38:34,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:38:34,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:38:34,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:38:34,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:38:34,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:38:34,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 11:38:34,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 11:38:34,161 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:38:34,161 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:38:34,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:38:34,162 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa372dfad40872d8fec1a0f5d039a19d9bc91cfd74858ce24ec80eeafb27f017 [2022-07-13 11:38:34,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:38:34,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:38:34,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:38:34,373 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:38:34,373 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:38:34,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c [2022-07-13 11:38:34,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d38e814d/8c9d98cf251844248fc1ba5132eca285/FLAG00769b3e0 [2022-07-13 11:38:34,809 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:38:34,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c [2022-07-13 11:38:34,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d38e814d/8c9d98cf251844248fc1ba5132eca285/FLAG00769b3e0 [2022-07-13 11:38:35,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d38e814d/8c9d98cf251844248fc1ba5132eca285 [2022-07-13 11:38:35,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:38:35,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:38:35,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:38:35,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:38:35,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:38:35,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:38:35" (1/1) ... [2022-07-13 11:38:35,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb08684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:35, skipping insertion in model container [2022-07-13 11:38:35,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:38:35" (1/1) ... [2022-07-13 11:38:35,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:38:35,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:38:35,500 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.08.i.cil-1.c[74696,74709] [2022-07-13 11:38:35,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:38:35,514 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:38:35,622 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.08.i.cil-1.c[74696,74709] [2022-07-13 11:38:35,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:38:35,639 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:38:35,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:35 WrapperNode [2022-07-13 11:38:35,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:38:35,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:38:35,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:38:35,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:38:35,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:35" (1/1) ... [2022-07-13 11:38:35,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:35" (1/1) ... [2022-07-13 11:38:35,709 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 794 [2022-07-13 11:38:35,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:38:35,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:38:35,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:38:35,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:38:35,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:35" (1/1) ... [2022-07-13 11:38:35,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:35" (1/1) ... [2022-07-13 11:38:35,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:35" (1/1) ... [2022-07-13 11:38:35,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:35" (1/1) ... [2022-07-13 11:38:35,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:35" (1/1) ... [2022-07-13 11:38:35,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:35" (1/1) ... [2022-07-13 11:38:35,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:35" (1/1) ... [2022-07-13 11:38:35,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:38:35,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:38:35,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:38:35,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:38:35,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:35" (1/1) ... [2022-07-13 11:38:35,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:38:35,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:38:35,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 11:38:35,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 11:38:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:38:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 11:38:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 11:38:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 11:38:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 11:38:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 11:38:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 11:38:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:38:35,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:38:35,970 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:38:35,971 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:38:35,983 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:38:36,892 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-13 11:38:36,893 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-13 11:38:36,893 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:38:36,901 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:38:36,902 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 11:38:36,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:38:36 BoogieIcfgContainer [2022-07-13 11:38:36,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:38:36,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:38:36,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:38:36,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:38:36,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:38:35" (1/3) ... [2022-07-13 11:38:36,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c29496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:38:36, skipping insertion in model container [2022-07-13 11:38:36,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:35" (2/3) ... [2022-07-13 11:38:36,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c29496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:38:36, skipping insertion in model container [2022-07-13 11:38:36,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:38:36" (3/3) ... [2022-07-13 11:38:36,911 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.08.i.cil-1.c [2022-07-13 11:38:36,920 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:38:36,920 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:38:36,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:38:36,981 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@58cefe4b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@52fbe19 [2022-07-13 11:38:36,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:38:36,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 149 states have (on average 1.7181208053691275) internal successors, (256), 150 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:36,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 11:38:36,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:36,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:36,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:36,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:36,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1630857964, now seen corresponding path program 1 times [2022-07-13 11:38:37,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:37,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13643037] [2022-07-13 11:38:37,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:37,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:37,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:37,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13643037] [2022-07-13 11:38:37,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13643037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:37,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:37,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:37,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091376604] [2022-07-13 11:38:37,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:37,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:37,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:37,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:37,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:37,444 INFO L87 Difference]: Start difference. First operand has 151 states, 149 states have (on average 1.7181208053691275) internal successors, (256), 150 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:38,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:38,295 INFO L93 Difference]: Finished difference Result 423 states and 720 transitions. [2022-07-13 11:38:38,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:38,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-07-13 11:38:38,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:38,305 INFO L225 Difference]: With dead ends: 423 [2022-07-13 11:38:38,305 INFO L226 Difference]: Without dead ends: 257 [2022-07-13 11:38:38,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:38,310 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 156 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:38,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 447 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:38:38,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-07-13 11:38:38,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 178. [2022-07-13 11:38:38,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.6101694915254237) internal successors, (285), 177 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:38,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 285 transitions. [2022-07-13 11:38:38,342 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 285 transitions. Word has length 45 [2022-07-13 11:38:38,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:38,343 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 285 transitions. [2022-07-13 11:38:38,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:38,343 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 285 transitions. [2022-07-13 11:38:38,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-13 11:38:38,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:38,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:38,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 11:38:38,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:38,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:38,346 INFO L85 PathProgramCache]: Analyzing trace with hash -996579501, now seen corresponding path program 1 times [2022-07-13 11:38:38,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:38,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420025655] [2022-07-13 11:38:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:38,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:38,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:38,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420025655] [2022-07-13 11:38:38,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420025655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:38,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:38,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:38,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229439385] [2022-07-13 11:38:38,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:38,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:38,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:38,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:38,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:38,445 INFO L87 Difference]: Start difference. First operand 178 states and 285 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:38,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:38,986 INFO L93 Difference]: Finished difference Result 464 states and 740 transitions. [2022-07-13 11:38:38,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:38,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-07-13 11:38:38,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:38,988 INFO L225 Difference]: With dead ends: 464 [2022-07-13 11:38:38,988 INFO L226 Difference]: Without dead ends: 296 [2022-07-13 11:38:38,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:38,990 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 121 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:38,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 360 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:38:38,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-07-13 11:38:38,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 218. [2022-07-13 11:38:39,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.6543778801843319) internal successors, (359), 217 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:39,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 359 transitions. [2022-07-13 11:38:39,004 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 359 transitions. Word has length 46 [2022-07-13 11:38:39,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:39,004 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 359 transitions. [2022-07-13 11:38:39,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:39,005 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 359 transitions. [2022-07-13 11:38:39,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-13 11:38:39,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:39,007 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:39,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 11:38:39,007 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:39,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:39,008 INFO L85 PathProgramCache]: Analyzing trace with hash 330663453, now seen corresponding path program 1 times [2022-07-13 11:38:39,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:39,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644447882] [2022-07-13 11:38:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:39,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:39,134 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:39,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:39,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644447882] [2022-07-13 11:38:39,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644447882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:39,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:39,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:39,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634298330] [2022-07-13 11:38:39,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:39,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:39,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:39,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:39,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:39,138 INFO L87 Difference]: Start difference. First operand 218 states and 359 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:40,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:40,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:40,694 INFO L93 Difference]: Finished difference Result 580 states and 955 transitions. [2022-07-13 11:38:40,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:40,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-07-13 11:38:40,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:40,696 INFO L225 Difference]: With dead ends: 580 [2022-07-13 11:38:40,697 INFO L226 Difference]: Without dead ends: 372 [2022-07-13 11:38:40,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:40,698 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 127 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:40,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 374 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 11:38:40,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-07-13 11:38:40,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 282. [2022-07-13 11:38:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.690391459074733) internal successors, (475), 281 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 475 transitions. [2022-07-13 11:38:40,710 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 475 transitions. Word has length 74 [2022-07-13 11:38:40,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:40,710 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 475 transitions. [2022-07-13 11:38:40,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:40,710 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 475 transitions. [2022-07-13 11:38:40,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 11:38:40,712 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:40,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:40,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 11:38:40,713 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:40,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:40,713 INFO L85 PathProgramCache]: Analyzing trace with hash 579944780, now seen corresponding path program 1 times [2022-07-13 11:38:40,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:40,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064960402] [2022-07-13 11:38:40,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:40,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:40,851 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 11:38:40,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:40,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064960402] [2022-07-13 11:38:40,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064960402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:40,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:40,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:40,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109489202] [2022-07-13 11:38:40,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:40,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:40,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:40,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:40,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:40,857 INFO L87 Difference]: Start difference. First operand 282 states and 475 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:42,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:42,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:42,503 INFO L93 Difference]: Finished difference Result 582 states and 977 transitions. [2022-07-13 11:38:42,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:42,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-07-13 11:38:42,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:42,505 INFO L225 Difference]: With dead ends: 582 [2022-07-13 11:38:42,505 INFO L226 Difference]: Without dead ends: 310 [2022-07-13 11:38:42,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:42,508 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 22 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:42,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 475 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 11:38:42,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-07-13 11:38:42,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 293. [2022-07-13 11:38:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.6917808219178083) internal successors, (494), 292 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:42,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 494 transitions. [2022-07-13 11:38:42,523 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 494 transitions. Word has length 79 [2022-07-13 11:38:42,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:42,523 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 494 transitions. [2022-07-13 11:38:42,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:42,524 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 494 transitions. [2022-07-13 11:38:42,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-13 11:38:42,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:42,525 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 11:38:42,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 11:38:42,525 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:42,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:42,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1317916975, now seen corresponding path program 1 times [2022-07-13 11:38:42,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:42,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221553373] [2022-07-13 11:38:42,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:42,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 11:38:42,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:42,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221553373] [2022-07-13 11:38:42,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221553373] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:42,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:42,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:42,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134747673] [2022-07-13 11:38:42,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:42,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:42,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:42,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:42,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:42,625 INFO L87 Difference]: Start difference. First operand 293 states and 494 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:44,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:44,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:44,326 INFO L93 Difference]: Finished difference Result 582 states and 976 transitions. [2022-07-13 11:38:44,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:44,326 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 87 [2022-07-13 11:38:44,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:44,328 INFO L225 Difference]: With dead ends: 582 [2022-07-13 11:38:44,328 INFO L226 Difference]: Without dead ends: 310 [2022-07-13 11:38:44,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:44,329 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 24 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:44,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 477 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 11:38:44,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-07-13 11:38:44,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 293. [2022-07-13 11:38:44,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.6883561643835616) internal successors, (493), 292 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:44,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 493 transitions. [2022-07-13 11:38:44,336 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 493 transitions. Word has length 87 [2022-07-13 11:38:44,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:44,336 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 493 transitions. [2022-07-13 11:38:44,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:44,337 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 493 transitions. [2022-07-13 11:38:44,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-13 11:38:44,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:44,338 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:44,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 11:38:44,338 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:44,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:44,338 INFO L85 PathProgramCache]: Analyzing trace with hash 389352563, now seen corresponding path program 1 times [2022-07-13 11:38:44,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:44,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028250321] [2022-07-13 11:38:44,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:44,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:44,421 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 11:38:44,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:44,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028250321] [2022-07-13 11:38:44,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028250321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:44,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:44,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:44,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053610479] [2022-07-13 11:38:44,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:44,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:44,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:44,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:44,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:44,423 INFO L87 Difference]: Start difference. First operand 293 states and 493 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:44,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:44,876 INFO L93 Difference]: Finished difference Result 643 states and 1063 transitions. [2022-07-13 11:38:44,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:44,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-07-13 11:38:44,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:44,878 INFO L225 Difference]: With dead ends: 643 [2022-07-13 11:38:44,878 INFO L226 Difference]: Without dead ends: 371 [2022-07-13 11:38:44,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:44,879 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 143 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:44,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 336 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:38:44,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-07-13 11:38:44,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 293. [2022-07-13 11:38:44,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.6712328767123288) internal successors, (488), 292 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:44,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 488 transitions. [2022-07-13 11:38:44,885 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 488 transitions. Word has length 88 [2022-07-13 11:38:44,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:44,885 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 488 transitions. [2022-07-13 11:38:44,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:44,886 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 488 transitions. [2022-07-13 11:38:44,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 11:38:44,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:44,887 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:44,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 11:38:44,887 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:44,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:44,887 INFO L85 PathProgramCache]: Analyzing trace with hash 262089547, now seen corresponding path program 1 times [2022-07-13 11:38:44,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:44,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930870657] [2022-07-13 11:38:44,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:44,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:44,980 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 11:38:44,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:44,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930870657] [2022-07-13 11:38:44,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930870657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:44,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:44,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:44,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795245861] [2022-07-13 11:38:44,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:44,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:44,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:44,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:44,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:44,983 INFO L87 Difference]: Start difference. First operand 293 states and 488 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:46,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:46,046 INFO L93 Difference]: Finished difference Result 642 states and 1053 transitions. [2022-07-13 11:38:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:46,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-07-13 11:38:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:46,048 INFO L225 Difference]: With dead ends: 642 [2022-07-13 11:38:46,048 INFO L226 Difference]: Without dead ends: 370 [2022-07-13 11:38:46,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:46,049 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 148 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:46,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 338 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 11:38:46,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-07-13 11:38:46,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 293. [2022-07-13 11:38:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.654109589041096) internal successors, (483), 292 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:46,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 483 transitions. [2022-07-13 11:38:46,054 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 483 transitions. Word has length 93 [2022-07-13 11:38:46,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:46,054 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 483 transitions. [2022-07-13 11:38:46,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:46,054 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 483 transitions. [2022-07-13 11:38:46,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 11:38:46,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:46,056 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:46,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 11:38:46,056 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:46,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:46,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1550770911, now seen corresponding path program 1 times [2022-07-13 11:38:46,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:46,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200783012] [2022-07-13 11:38:46,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:46,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:46,131 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 11:38:46,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:46,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200783012] [2022-07-13 11:38:46,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200783012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:46,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:46,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:46,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24073460] [2022-07-13 11:38:46,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:46,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:46,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:46,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:46,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:46,133 INFO L87 Difference]: Start difference. First operand 293 states and 483 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:47,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:47,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:47,320 INFO L93 Difference]: Finished difference Result 579 states and 954 transitions. [2022-07-13 11:38:47,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:47,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-07-13 11:38:47,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:47,322 INFO L225 Difference]: With dead ends: 579 [2022-07-13 11:38:47,322 INFO L226 Difference]: Without dead ends: 307 [2022-07-13 11:38:47,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:47,323 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 25 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:47,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 483 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 11:38:47,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-07-13 11:38:47,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 293. [2022-07-13 11:38:47,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.6506849315068493) internal successors, (482), 292 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 482 transitions. [2022-07-13 11:38:47,328 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 482 transitions. Word has length 93 [2022-07-13 11:38:47,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:47,328 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 482 transitions. [2022-07-13 11:38:47,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:47,328 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 482 transitions. [2022-07-13 11:38:47,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 11:38:47,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:47,329 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:47,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 11:38:47,329 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:47,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:47,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2009016310, now seen corresponding path program 1 times [2022-07-13 11:38:47,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:47,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042757960] [2022-07-13 11:38:47,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:47,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:47,402 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 11:38:47,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:47,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042757960] [2022-07-13 11:38:47,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042757960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:47,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:47,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:47,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890576256] [2022-07-13 11:38:47,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:47,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:47,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:47,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:47,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:47,404 INFO L87 Difference]: Start difference. First operand 293 states and 482 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:48,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:48,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:48,828 INFO L93 Difference]: Finished difference Result 641 states and 1042 transitions. [2022-07-13 11:38:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:48,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-07-13 11:38:48,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:48,830 INFO L225 Difference]: With dead ends: 641 [2022-07-13 11:38:48,830 INFO L226 Difference]: Without dead ends: 369 [2022-07-13 11:38:48,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:48,831 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 140 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:48,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 340 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 11:38:48,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-07-13 11:38:48,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 293. [2022-07-13 11:38:48,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.6335616438356164) internal successors, (477), 292 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 477 transitions. [2022-07-13 11:38:48,836 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 477 transitions. Word has length 93 [2022-07-13 11:38:48,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:48,836 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 477 transitions. [2022-07-13 11:38:48,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 477 transitions. [2022-07-13 11:38:48,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-13 11:38:48,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:48,837 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:48,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 11:38:48,837 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:48,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:48,838 INFO L85 PathProgramCache]: Analyzing trace with hash -301391389, now seen corresponding path program 1 times [2022-07-13 11:38:48,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:48,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868730383] [2022-07-13 11:38:48,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:48,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:48,914 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 11:38:48,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:48,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868730383] [2022-07-13 11:38:48,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868730383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:48,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:48,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:48,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873088798] [2022-07-13 11:38:48,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:48,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:48,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:48,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:48,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:48,916 INFO L87 Difference]: Start difference. First operand 293 states and 477 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:50,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:51,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:51,141 INFO L93 Difference]: Finished difference Result 578 states and 943 transitions. [2022-07-13 11:38:51,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:51,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-07-13 11:38:51,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:51,142 INFO L225 Difference]: With dead ends: 578 [2022-07-13 11:38:51,142 INFO L226 Difference]: Without dead ends: 306 [2022-07-13 11:38:51,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:51,143 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 22 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:51,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 485 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 11:38:51,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-07-13 11:38:51,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 293. [2022-07-13 11:38:51,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.63013698630137) internal successors, (476), 292 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:51,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 476 transitions. [2022-07-13 11:38:51,159 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 476 transitions. Word has length 94 [2022-07-13 11:38:51,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:51,159 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 476 transitions. [2022-07-13 11:38:51,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:51,159 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 476 transitions. [2022-07-13 11:38:51,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 11:38:51,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:51,160 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:51,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 11:38:51,160 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:51,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:51,161 INFO L85 PathProgramCache]: Analyzing trace with hash -233475740, now seen corresponding path program 1 times [2022-07-13 11:38:51,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:51,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715056296] [2022-07-13 11:38:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:51,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:51,234 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 11:38:51,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:51,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715056296] [2022-07-13 11:38:51,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715056296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:51,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:51,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:51,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710946905] [2022-07-13 11:38:51,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:51,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:51,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:51,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:51,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:51,236 INFO L87 Difference]: Start difference. First operand 293 states and 476 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:53,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:53,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:53,346 INFO L93 Difference]: Finished difference Result 578 states and 942 transitions. [2022-07-13 11:38:53,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:53,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-07-13 11:38:53,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:53,347 INFO L225 Difference]: With dead ends: 578 [2022-07-13 11:38:53,347 INFO L226 Difference]: Without dead ends: 306 [2022-07-13 11:38:53,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:53,348 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 20 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:53,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 485 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 11:38:53,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-07-13 11:38:53,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 293. [2022-07-13 11:38:53,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.6267123287671232) internal successors, (475), 292 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:53,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 475 transitions. [2022-07-13 11:38:53,353 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 475 transitions. Word has length 95 [2022-07-13 11:38:53,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:53,353 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 475 transitions. [2022-07-13 11:38:53,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:53,353 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 475 transitions. [2022-07-13 11:38:53,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-13 11:38:53,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:53,354 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:53,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 11:38:53,354 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:53,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:53,355 INFO L85 PathProgramCache]: Analyzing trace with hash -772685816, now seen corresponding path program 1 times [2022-07-13 11:38:53,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:53,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022259996] [2022-07-13 11:38:53,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:53,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 11:38:53,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:53,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022259996] [2022-07-13 11:38:53,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022259996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:53,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:53,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:53,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452280555] [2022-07-13 11:38:53,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:53,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:53,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:53,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:53,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:53,454 INFO L87 Difference]: Start difference. First operand 293 states and 475 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:54,860 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:55,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:55,163 INFO L93 Difference]: Finished difference Result 641 states and 1031 transitions. [2022-07-13 11:38:55,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:55,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-07-13 11:38:55,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:55,165 INFO L225 Difference]: With dead ends: 641 [2022-07-13 11:38:55,165 INFO L226 Difference]: Without dead ends: 369 [2022-07-13 11:38:55,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:55,166 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 142 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:55,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 340 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 11:38:55,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-07-13 11:38:55,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 293. [2022-07-13 11:38:55,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.6095890410958904) internal successors, (470), 292 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:55,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 470 transitions. [2022-07-13 11:38:55,172 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 470 transitions. Word has length 96 [2022-07-13 11:38:55,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:55,173 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 470 transitions. [2022-07-13 11:38:55,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:55,174 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 470 transitions. [2022-07-13 11:38:55,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-13 11:38:55,175 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:55,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:55,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 11:38:55,175 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:55,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:55,175 INFO L85 PathProgramCache]: Analyzing trace with hash 895742832, now seen corresponding path program 1 times [2022-07-13 11:38:55,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:55,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869079266] [2022-07-13 11:38:55,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:55,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:55,257 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 11:38:55,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:55,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869079266] [2022-07-13 11:38:55,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869079266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:55,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:55,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:55,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553910382] [2022-07-13 11:38:55,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:55,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:55,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:55,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:55,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:55,259 INFO L87 Difference]: Start difference. First operand 293 states and 470 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:56,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:57,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:57,227 INFO L93 Difference]: Finished difference Result 681 states and 1090 transitions. [2022-07-13 11:38:57,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:57,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-07-13 11:38:57,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:57,229 INFO L225 Difference]: With dead ends: 681 [2022-07-13 11:38:57,229 INFO L226 Difference]: Without dead ends: 409 [2022-07-13 11:38:57,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:57,230 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 120 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:57,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 340 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 11:38:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-07-13 11:38:57,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 330. [2022-07-13 11:38:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.6170212765957446) internal successors, (532), 329 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:57,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 532 transitions. [2022-07-13 11:38:57,236 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 532 transitions. Word has length 96 [2022-07-13 11:38:57,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:57,236 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 532 transitions. [2022-07-13 11:38:57,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:57,236 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 532 transitions. [2022-07-13 11:38:57,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-13 11:38:57,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:57,237 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:57,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 11:38:57,237 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:57,237 INFO L85 PathProgramCache]: Analyzing trace with hash -428913977, now seen corresponding path program 1 times [2022-07-13 11:38:57,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:57,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524649712] [2022-07-13 11:38:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:57,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:57,326 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:57,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:57,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524649712] [2022-07-13 11:38:57,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524649712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:57,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:57,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:57,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120929035] [2022-07-13 11:38:57,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:57,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:57,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:57,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:57,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:57,328 INFO L87 Difference]: Start difference. First operand 330 states and 532 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 11:38:58,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:58,428 INFO L93 Difference]: Finished difference Result 715 states and 1146 transitions. [2022-07-13 11:38:58,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:58,428 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 97 [2022-07-13 11:38:58,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:58,430 INFO L225 Difference]: With dead ends: 715 [2022-07-13 11:38:58,430 INFO L226 Difference]: Without dead ends: 406 [2022-07-13 11:38:58,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:58,431 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 119 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:58,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 364 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 11:38:58,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-07-13 11:38:58,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 330. [2022-07-13 11:38:58,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.6109422492401215) internal successors, (530), 329 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 530 transitions. [2022-07-13 11:38:58,437 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 530 transitions. Word has length 97 [2022-07-13 11:38:58,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:58,437 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 530 transitions. [2022-07-13 11:38:58,437 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 11:38:58,437 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 530 transitions. [2022-07-13 11:38:58,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 11:38:58,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:58,438 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:58,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 11:38:58,439 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:58,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:58,439 INFO L85 PathProgramCache]: Analyzing trace with hash -567402669, now seen corresponding path program 1 times [2022-07-13 11:38:58,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:58,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972988774] [2022-07-13 11:38:58,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:58,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 11:38:58,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:58,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972988774] [2022-07-13 11:38:58,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972988774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:58,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:58,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:58,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483908494] [2022-07-13 11:38:58,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:58,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:58,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:58,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:58,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:58,510 INFO L87 Difference]: Start difference. First operand 330 states and 530 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 11:38:59,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:59,556 INFO L93 Difference]: Finished difference Result 753 states and 1206 transitions. [2022-07-13 11:38:59,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:59,556 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 104 [2022-07-13 11:38:59,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:59,558 INFO L225 Difference]: With dead ends: 753 [2022-07-13 11:38:59,558 INFO L226 Difference]: Without dead ends: 444 [2022-07-13 11:38:59,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:59,559 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 140 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:59,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 344 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 11:38:59,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-13 11:38:59,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 346. [2022-07-13 11:38:59,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 1.5942028985507246) internal successors, (550), 345 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:59,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 550 transitions. [2022-07-13 11:38:59,565 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 550 transitions. Word has length 104 [2022-07-13 11:38:59,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:59,565 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 550 transitions. [2022-07-13 11:38:59,565 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 11:38:59,565 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 550 transitions. [2022-07-13 11:38:59,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 11:38:59,566 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:59,566 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, 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 11:38:59,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 11:38:59,566 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:59,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:59,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1681657825, now seen corresponding path program 1 times [2022-07-13 11:38:59,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:59,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381291387] [2022-07-13 11:38:59,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:59,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:59,632 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 11:38:59,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:59,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381291387] [2022-07-13 11:38:59,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381291387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:59,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:59,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:59,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961630101] [2022-07-13 11:38:59,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:59,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:59,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:59,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:59,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:59,635 INFO L87 Difference]: Start difference. First operand 346 states and 550 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 11:39:00,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:01,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:01,112 INFO L93 Difference]: Finished difference Result 710 states and 1132 transitions. [2022-07-13 11:39:01,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:01,113 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 105 [2022-07-13 11:39:01,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:01,114 INFO L225 Difference]: With dead ends: 710 [2022-07-13 11:39:01,114 INFO L226 Difference]: Without dead ends: 385 [2022-07-13 11:39:01,115 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 11:39:01,115 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 29 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:01,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 505 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 11:39:01,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-07-13 11:39:01,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 368. [2022-07-13 11:39:01,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.5885558583106267) internal successors, (583), 367 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 11:39:01,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 583 transitions. [2022-07-13 11:39:01,129 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 583 transitions. Word has length 105 [2022-07-13 11:39:01,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:01,129 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 583 transitions. [2022-07-13 11:39:01,129 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 11:39:01,129 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 583 transitions. [2022-07-13 11:39:01,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-13 11:39:01,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:01,130 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:01,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 11:39:01,131 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:01,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:01,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1117720858, now seen corresponding path program 1 times [2022-07-13 11:39:01,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:01,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760338644] [2022-07-13 11:39:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:01,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-13 11:39:01,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:01,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760338644] [2022-07-13 11:39:01,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760338644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:01,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:01,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:01,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175837074] [2022-07-13 11:39:01,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:01,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:01,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:01,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:01,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:01,215 INFO L87 Difference]: Start difference. First operand 368 states and 583 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:01,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:01,942 INFO L93 Difference]: Finished difference Result 732 states and 1164 transitions. [2022-07-13 11:39:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:01,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-07-13 11:39:01,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:01,944 INFO L225 Difference]: With dead ends: 732 [2022-07-13 11:39:01,944 INFO L226 Difference]: Without dead ends: 385 [2022-07-13 11:39:01,944 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 11:39:01,945 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 38 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:01,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 505 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:39:01,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-07-13 11:39:01,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 368. [2022-07-13 11:39:01,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.5858310626702998) internal successors, (582), 367 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:01,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 582 transitions. [2022-07-13 11:39:01,951 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 582 transitions. Word has length 118 [2022-07-13 11:39:01,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:01,951 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 582 transitions. [2022-07-13 11:39:01,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:01,951 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 582 transitions. [2022-07-13 11:39:01,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-13 11:39:01,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:01,952 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:01,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 11:39:01,953 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:01,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:01,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1862291490, now seen corresponding path program 1 times [2022-07-13 11:39:01,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:01,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205584841] [2022-07-13 11:39:01,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:01,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-13 11:39:02,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:02,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205584841] [2022-07-13 11:39:02,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205584841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:02,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:02,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:02,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813782902] [2022-07-13 11:39:02,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:02,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:02,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:02,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:02,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:02,032 INFO L87 Difference]: Start difference. First operand 368 states and 582 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:02,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:02,556 INFO L93 Difference]: Finished difference Result 732 states and 1162 transitions. [2022-07-13 11:39:02,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:02,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 119 [2022-07-13 11:39:02,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:02,557 INFO L225 Difference]: With dead ends: 732 [2022-07-13 11:39:02,558 INFO L226 Difference]: Without dead ends: 385 [2022-07-13 11:39:02,558 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 11:39:02,559 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 36 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:02,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 505 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:39:02,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-07-13 11:39:02,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 368. [2022-07-13 11:39:02,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.5831062670299727) internal successors, (581), 367 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 581 transitions. [2022-07-13 11:39:02,565 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 581 transitions. Word has length 119 [2022-07-13 11:39:02,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:02,565 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 581 transitions. [2022-07-13 11:39:02,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:02,565 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 581 transitions. [2022-07-13 11:39:02,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-13 11:39:02,566 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:02,566 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:02,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 11:39:02,566 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:02,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:02,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2121527147, now seen corresponding path program 1 times [2022-07-13 11:39:02,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:02,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313428552] [2022-07-13 11:39:02,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:02,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-13 11:39:02,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:02,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313428552] [2022-07-13 11:39:02,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313428552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:02,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:02,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:02,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917061504] [2022-07-13 11:39:02,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:02,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:02,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:02,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:02,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:02,716 INFO L87 Difference]: Start difference. First operand 368 states and 581 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 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 11:39:03,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:03,296 INFO L93 Difference]: Finished difference Result 791 states and 1244 transitions. [2022-07-13 11:39:03,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:03,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 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 120 [2022-07-13 11:39:03,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:03,298 INFO L225 Difference]: With dead ends: 791 [2022-07-13 11:39:03,298 INFO L226 Difference]: Without dead ends: 444 [2022-07-13 11:39:03,299 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 11:39:03,299 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 142 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:03,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 340 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:03,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-13 11:39:03,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 368. [2022-07-13 11:39:03,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.564032697547684) internal successors, (574), 367 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:03,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 574 transitions. [2022-07-13 11:39:03,305 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 574 transitions. Word has length 120 [2022-07-13 11:39:03,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:03,306 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 574 transitions. [2022-07-13 11:39:03,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 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 11:39:03,306 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 574 transitions. [2022-07-13 11:39:03,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-13 11:39:03,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:03,307 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:03,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 11:39:03,307 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:03,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:03,308 INFO L85 PathProgramCache]: Analyzing trace with hash -255070744, now seen corresponding path program 1 times [2022-07-13 11:39:03,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:03,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809000440] [2022-07-13 11:39:03,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:03,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:03,391 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 11:39:03,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:03,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809000440] [2022-07-13 11:39:03,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809000440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:03,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:03,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:03,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532088368] [2022-07-13 11:39:03,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:03,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:03,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:03,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:03,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:03,393 INFO L87 Difference]: Start difference. First operand 368 states and 574 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:04,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:05,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:05,232 INFO L93 Difference]: Finished difference Result 831 states and 1294 transitions. [2022-07-13 11:39:05,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:05,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-07-13 11:39:05,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:05,234 INFO L225 Difference]: With dead ends: 831 [2022-07-13 11:39:05,234 INFO L226 Difference]: Without dead ends: 484 [2022-07-13 11:39:05,235 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 11:39:05,235 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 111 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:05,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 341 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 11:39:05,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-07-13 11:39:05,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 411. [2022-07-13 11:39:05,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.5682926829268293) internal successors, (643), 410 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 643 transitions. [2022-07-13 11:39:05,241 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 643 transitions. Word has length 127 [2022-07-13 11:39:05,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:05,242 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 643 transitions. [2022-07-13 11:39:05,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:05,242 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 643 transitions. [2022-07-13 11:39:05,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 11:39:05,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:05,243 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:05,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 11:39:05,243 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:05,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:05,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1983227683, now seen corresponding path program 1 times [2022-07-13 11:39:05,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:05,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753881536] [2022-07-13 11:39:05,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:05,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:05,321 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 11:39:05,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:05,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753881536] [2022-07-13 11:39:05,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753881536] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:05,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:05,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:05,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798194116] [2022-07-13 11:39:05,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:05,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:05,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:05,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:05,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:05,323 INFO L87 Difference]: Start difference. First operand 411 states and 643 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:06,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:06,568 INFO L93 Difference]: Finished difference Result 877 states and 1368 transitions. [2022-07-13 11:39:06,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:06,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 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 128 [2022-07-13 11:39:06,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:06,569 INFO L225 Difference]: With dead ends: 877 [2022-07-13 11:39:06,569 INFO L226 Difference]: Without dead ends: 485 [2022-07-13 11:39:06,570 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 11:39:06,570 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 112 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:06,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 364 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 11:39:06,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-07-13 11:39:06,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 413. [2022-07-13 11:39:06,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.5679611650485437) internal successors, (646), 412 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:06,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 646 transitions. [2022-07-13 11:39:06,577 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 646 transitions. Word has length 128 [2022-07-13 11:39:06,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:06,577 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 646 transitions. [2022-07-13 11:39:06,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:06,578 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 646 transitions. [2022-07-13 11:39:06,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-13 11:39:06,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:06,579 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:06,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 11:39:06,579 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:06,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:06,580 INFO L85 PathProgramCache]: Analyzing trace with hash -753249217, now seen corresponding path program 1 times [2022-07-13 11:39:06,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:06,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903419488] [2022-07-13 11:39:06,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:06,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:06,679 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-13 11:39:06,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:06,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903419488] [2022-07-13 11:39:06,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903419488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:06,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:06,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:39:06,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265925851] [2022-07-13 11:39:06,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:06,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:39:06,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:06,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:39:06,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:06,682 INFO L87 Difference]: Start difference. First operand 413 states and 646 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 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 11:39:07,764 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:08,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:08,419 INFO L93 Difference]: Finished difference Result 815 states and 1280 transitions. [2022-07-13 11:39:08,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 11:39:08,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 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 140 [2022-07-13 11:39:08,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:08,422 INFO L225 Difference]: With dead ends: 815 [2022-07-13 11:39:08,422 INFO L226 Difference]: Without dead ends: 423 [2022-07-13 11:39:08,422 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 11:39:08,423 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 150 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:08,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 364 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 11:39:08,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-07-13 11:39:08,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 422. [2022-07-13 11:39:08,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 1.5605700712589075) internal successors, (657), 421 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 657 transitions. [2022-07-13 11:39:08,430 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 657 transitions. Word has length 140 [2022-07-13 11:39:08,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:08,430 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 657 transitions. [2022-07-13 11:39:08,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 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 11:39:08,430 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 657 transitions. [2022-07-13 11:39:08,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-13 11:39:08,431 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:08,431 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:08,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 11:39:08,432 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:08,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:08,432 INFO L85 PathProgramCache]: Analyzing trace with hash -734463505, now seen corresponding path program 1 times [2022-07-13 11:39:08,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:08,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574252927] [2022-07-13 11:39:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:08,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:08,520 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 11:39:08,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:08,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574252927] [2022-07-13 11:39:08,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574252927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:08,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:08,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:08,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567961526] [2022-07-13 11:39:08,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:08,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:08,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:08,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:08,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:08,523 INFO L87 Difference]: Start difference. First operand 422 states and 657 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 11:39:09,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:09,321 INFO L93 Difference]: Finished difference Result 907 states and 1411 transitions. [2022-07-13 11:39:09,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:09,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-07-13 11:39:09,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:09,323 INFO L225 Difference]: With dead ends: 907 [2022-07-13 11:39:09,323 INFO L226 Difference]: Without dead ends: 506 [2022-07-13 11:39:09,324 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 11:39:09,324 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 73 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:09,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 483 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:39:09,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-07-13 11:39:09,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 454. [2022-07-13 11:39:09,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.5607064017660044) internal successors, (707), 453 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:09,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 707 transitions. [2022-07-13 11:39:09,332 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 707 transitions. Word has length 140 [2022-07-13 11:39:09,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:09,333 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 707 transitions. [2022-07-13 11:39:09,333 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 11:39:09,333 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 707 transitions. [2022-07-13 11:39:09,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-13 11:39:09,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:09,334 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:09,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 11:39:09,335 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:09,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:09,335 INFO L85 PathProgramCache]: Analyzing trace with hash 866607601, now seen corresponding path program 1 times [2022-07-13 11:39:09,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:09,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703476501] [2022-07-13 11:39:09,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:09,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-13 11:39:09,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:09,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703476501] [2022-07-13 11:39:09,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703476501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:09,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:09,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:09,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362100313] [2022-07-13 11:39:09,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:09,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:09,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:09,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:09,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:09,412 INFO L87 Difference]: Start difference. First operand 454 states and 707 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:11,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:11,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:11,404 INFO L93 Difference]: Finished difference Result 932 states and 1453 transitions. [2022-07-13 11:39:11,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:11,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-07-13 11:39:11,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:11,406 INFO L225 Difference]: With dead ends: 932 [2022-07-13 11:39:11,406 INFO L226 Difference]: Without dead ends: 499 [2022-07-13 11:39:11,407 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 11:39:11,407 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 34 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:11,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 593 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 11:39:11,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-07-13 11:39:11,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 478. [2022-07-13 11:39:11,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 1.5576519916142557) internal successors, (743), 477 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 11:39:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 743 transitions. [2022-07-13 11:39:11,414 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 743 transitions. Word has length 140 [2022-07-13 11:39:11,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:11,414 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 743 transitions. [2022-07-13 11:39:11,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:11,414 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 743 transitions. [2022-07-13 11:39:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-13 11:39:11,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:11,416 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:11,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 11:39:11,416 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:11,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:11,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1120474823, now seen corresponding path program 1 times [2022-07-13 11:39:11,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:11,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960176911] [2022-07-13 11:39:11,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:11,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:11,506 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 11:39:11,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:11,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960176911] [2022-07-13 11:39:11,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960176911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:11,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:11,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:11,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456104767] [2022-07-13 11:39:11,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:11,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:11,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:11,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:11,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:11,508 INFO L87 Difference]: Start difference. First operand 478 states and 743 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 11:39:13,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:13,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:13,593 INFO L93 Difference]: Finished difference Result 985 states and 1530 transitions. [2022-07-13 11:39:13,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:13,593 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 11:39:13,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:13,595 INFO L225 Difference]: With dead ends: 985 [2022-07-13 11:39:13,595 INFO L226 Difference]: Without dead ends: 528 [2022-07-13 11:39:13,596 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 11:39:13,596 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 70 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:13,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 481 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 11:39:13,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-07-13 11:39:13,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 479. [2022-07-13 11:39:13,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.5564853556485356) internal successors, (744), 478 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:13,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 744 transitions. [2022-07-13 11:39:13,603 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 744 transitions. Word has length 141 [2022-07-13 11:39:13,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:13,604 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 744 transitions. [2022-07-13 11:39:13,604 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 11:39:13,604 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 744 transitions. [2022-07-13 11:39:13,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-13 11:39:13,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:13,605 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:13,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 11:39:13,605 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:13,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:13,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1773983904, now seen corresponding path program 1 times [2022-07-13 11:39:13,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:13,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618240511] [2022-07-13 11:39:13,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:13,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:13,706 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 11:39:13,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:13,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618240511] [2022-07-13 11:39:13,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618240511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:13,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:13,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:13,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388765293] [2022-07-13 11:39:13,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:13,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:13,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:13,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:13,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:13,709 INFO L87 Difference]: Start difference. First operand 479 states and 744 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 11:39:14,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:14,123 INFO L93 Difference]: Finished difference Result 986 states and 1530 transitions. [2022-07-13 11:39:14,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:14,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-07-13 11:39:14,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:14,125 INFO L225 Difference]: With dead ends: 986 [2022-07-13 11:39:14,125 INFO L226 Difference]: Without dead ends: 528 [2022-07-13 11:39:14,125 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 11:39:14,125 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 72 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:14,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 481 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:39:14,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-07-13 11:39:14,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 479. [2022-07-13 11:39:14,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.5543933054393306) internal successors, (743), 478 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 11:39:14,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 743 transitions. [2022-07-13 11:39:14,134 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 743 transitions. Word has length 143 [2022-07-13 11:39:14,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:14,134 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 743 transitions. [2022-07-13 11:39:14,134 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 11:39:14,135 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 743 transitions. [2022-07-13 11:39:14,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 11:39:14,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:14,136 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:14,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 11:39:14,136 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:14,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:14,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1773090698, now seen corresponding path program 1 times [2022-07-13 11:39:14,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:14,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525864406] [2022-07-13 11:39:14,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:14,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:14,229 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 11:39:14,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:14,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525864406] [2022-07-13 11:39:14,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525864406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:14,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:14,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:14,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982030301] [2022-07-13 11:39:14,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:14,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:14,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:14,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:14,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:14,231 INFO L87 Difference]: Start difference. First operand 479 states and 743 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 11:39:15,366 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:15,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:15,608 INFO L93 Difference]: Finished difference Result 978 states and 1515 transitions. [2022-07-13 11:39:15,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:15,609 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 144 [2022-07-13 11:39:15,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:15,610 INFO L225 Difference]: With dead ends: 978 [2022-07-13 11:39:15,610 INFO L226 Difference]: Without dead ends: 520 [2022-07-13 11:39:15,611 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 11:39:15,611 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 61 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:15,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 499 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 11:39:15,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-07-13 11:39:15,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 479. [2022-07-13 11:39:15,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.5523012552301256) internal successors, (742), 478 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:15,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 742 transitions. [2022-07-13 11:39:15,620 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 742 transitions. Word has length 144 [2022-07-13 11:39:15,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:15,620 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 742 transitions. [2022-07-13 11:39:15,620 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 11:39:15,620 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 742 transitions. [2022-07-13 11:39:15,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-13 11:39:15,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:15,621 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:15,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 11:39:15,622 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:15,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:15,622 INFO L85 PathProgramCache]: Analyzing trace with hash 502920678, now seen corresponding path program 1 times [2022-07-13 11:39:15,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:15,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985359093] [2022-07-13 11:39:15,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:15,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:15,708 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 11:39:15,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:15,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985359093] [2022-07-13 11:39:15,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985359093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:15,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:15,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:15,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486669469] [2022-07-13 11:39:15,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:15,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:15,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:15,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:15,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:15,710 INFO L87 Difference]: Start difference. First operand 479 states and 742 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:16,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:16,757 INFO L93 Difference]: Finished difference Result 1051 states and 1625 transitions. [2022-07-13 11:39:16,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:16,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-07-13 11:39:16,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:16,758 INFO L225 Difference]: With dead ends: 1051 [2022-07-13 11:39:16,758 INFO L226 Difference]: Without dead ends: 593 [2022-07-13 11:39:16,759 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 11:39:16,759 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 118 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:16,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 350 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 11:39:16,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-07-13 11:39:16,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 514. [2022-07-13 11:39:16,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 1.5516569200779726) internal successors, (796), 513 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 11:39:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 796 transitions. [2022-07-13 11:39:16,767 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 796 transitions. Word has length 150 [2022-07-13 11:39:16,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:16,767 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 796 transitions. [2022-07-13 11:39:16,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:16,767 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 796 transitions. [2022-07-13 11:39:16,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 11:39:16,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:16,768 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:16,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 11:39:16,769 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:16,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:16,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2134561589, now seen corresponding path program 1 times [2022-07-13 11:39:16,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:16,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555770960] [2022-07-13 11:39:16,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:16,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:16,843 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 11:39:16,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:16,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555770960] [2022-07-13 11:39:16,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555770960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:16,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:16,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:16,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35602200] [2022-07-13 11:39:16,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:16,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:16,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:16,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:16,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:16,845 INFO L87 Difference]: Start difference. First operand 514 states and 796 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:17,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:17,280 INFO L93 Difference]: Finished difference Result 1046 states and 1618 transitions. [2022-07-13 11:39:17,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:17,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 151 [2022-07-13 11:39:17,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:17,282 INFO L225 Difference]: With dead ends: 1046 [2022-07-13 11:39:17,282 INFO L226 Difference]: Without dead ends: 553 [2022-07-13 11:39:17,283 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 11:39:17,283 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 51 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:17,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 501 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:39:17,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-13 11:39:17,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 519. [2022-07-13 11:39:17,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.55019305019305) internal successors, (803), 518 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:17,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 803 transitions. [2022-07-13 11:39:17,291 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 803 transitions. Word has length 151 [2022-07-13 11:39:17,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:17,292 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 803 transitions. [2022-07-13 11:39:17,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:17,292 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 803 transitions. [2022-07-13 11:39:17,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-13 11:39:17,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:17,293 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:17,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 11:39:17,293 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:17,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:17,294 INFO L85 PathProgramCache]: Analyzing trace with hash 549512543, now seen corresponding path program 1 times [2022-07-13 11:39:17,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:17,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018501422] [2022-07-13 11:39:17,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:17,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-13 11:39:17,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:17,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018501422] [2022-07-13 11:39:17,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018501422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:17,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:17,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:17,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874440910] [2022-07-13 11:39:17,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:17,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:17,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:17,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:17,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:17,379 INFO L87 Difference]: Start difference. First operand 519 states and 803 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:17,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:17,949 INFO L93 Difference]: Finished difference Result 1051 states and 1624 transitions. [2022-07-13 11:39:17,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:17,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-07-13 11:39:17,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:17,951 INFO L225 Difference]: With dead ends: 1051 [2022-07-13 11:39:17,951 INFO L226 Difference]: Without dead ends: 553 [2022-07-13 11:39:17,951 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 11:39:17,952 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 74 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:17,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 523 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:17,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-13 11:39:17,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 519. [2022-07-13 11:39:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.5482625482625483) internal successors, (802), 518 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 802 transitions. [2022-07-13 11:39:17,959 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 802 transitions. Word has length 155 [2022-07-13 11:39:17,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:17,959 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 802 transitions. [2022-07-13 11:39:17,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:17,959 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 802 transitions. [2022-07-13 11:39:17,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-13 11:39:17,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:17,960 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:17,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 11:39:17,961 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:17,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:17,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1020868893, now seen corresponding path program 1 times [2022-07-13 11:39:17,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:17,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631015605] [2022-07-13 11:39:17,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:17,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:18,048 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-13 11:39:18,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:18,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631015605] [2022-07-13 11:39:18,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631015605] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:18,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:18,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:18,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386886156] [2022-07-13 11:39:18,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:18,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:18,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:18,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:18,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:18,050 INFO L87 Difference]: Start difference. First operand 519 states and 802 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:18,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:18,501 INFO L93 Difference]: Finished difference Result 1038 states and 1606 transitions. [2022-07-13 11:39:18,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:18,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-07-13 11:39:18,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:18,509 INFO L225 Difference]: With dead ends: 1038 [2022-07-13 11:39:18,509 INFO L226 Difference]: Without dead ends: 540 [2022-07-13 11:39:18,509 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 11:39:18,510 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 45 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:18,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 593 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:39:18,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-07-13 11:39:18,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 519. [2022-07-13 11:39:18,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.5463320463320462) internal successors, (801), 518 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 801 transitions. [2022-07-13 11:39:18,518 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 801 transitions. Word has length 155 [2022-07-13 11:39:18,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:18,518 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 801 transitions. [2022-07-13 11:39:18,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 801 transitions. [2022-07-13 11:39:18,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-13 11:39:18,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:18,519 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:18,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-13 11:39:18,520 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:18,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:18,520 INFO L85 PathProgramCache]: Analyzing trace with hash 981129845, now seen corresponding path program 1 times [2022-07-13 11:39:18,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:18,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301300901] [2022-07-13 11:39:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:18,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-13 11:39:18,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:18,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301300901] [2022-07-13 11:39:18,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301300901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:18,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:18,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:18,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219654251] [2022-07-13 11:39:18,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:18,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:18,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:18,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:18,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:18,612 INFO L87 Difference]: Start difference. First operand 519 states and 801 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:20,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:20,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:20,623 INFO L93 Difference]: Finished difference Result 1089 states and 1676 transitions. [2022-07-13 11:39:20,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:20,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 156 [2022-07-13 11:39:20,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:20,625 INFO L225 Difference]: With dead ends: 1089 [2022-07-13 11:39:20,625 INFO L226 Difference]: Without dead ends: 591 [2022-07-13 11:39:20,625 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 11:39:20,626 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 140 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:20,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 374 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 11:39:20,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-07-13 11:39:20,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 519. [2022-07-13 11:39:20,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.527027027027027) internal successors, (791), 518 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 791 transitions. [2022-07-13 11:39:20,633 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 791 transitions. Word has length 156 [2022-07-13 11:39:20,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:20,634 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 791 transitions. [2022-07-13 11:39:20,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:20,634 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 791 transitions. [2022-07-13 11:39:20,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 11:39:20,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:20,635 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:20,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 11:39:20,635 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:20,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:20,636 INFO L85 PathProgramCache]: Analyzing trace with hash 158699004, now seen corresponding path program 1 times [2022-07-13 11:39:20,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:20,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806615537] [2022-07-13 11:39:20,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:20,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-13 11:39:20,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:20,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806615537] [2022-07-13 11:39:20,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806615537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:20,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:20,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:20,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414439411] [2022-07-13 11:39:20,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:20,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:20,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:20,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:20,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:20,718 INFO L87 Difference]: Start difference. First operand 519 states and 791 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 11:39:21,843 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:22,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:22,039 INFO L93 Difference]: Finished difference Result 1041 states and 1588 transitions. [2022-07-13 11:39:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:22,039 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 162 [2022-07-13 11:39:22,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:22,041 INFO L225 Difference]: With dead ends: 1041 [2022-07-13 11:39:22,041 INFO L226 Difference]: Without dead ends: 543 [2022-07-13 11:39:22,041 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 11:39:22,042 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 53 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:22,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 523 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 11:39:22,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-07-13 11:39:22,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 519. [2022-07-13 11:39:22,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.5250965250965252) internal successors, (790), 518 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 790 transitions. [2022-07-13 11:39:22,049 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 790 transitions. Word has length 162 [2022-07-13 11:39:22,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:22,050 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 790 transitions. [2022-07-13 11:39:22,050 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 11:39:22,050 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 790 transitions. [2022-07-13 11:39:22,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 11:39:22,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:22,051 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:22,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 11:39:22,051 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:22,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:22,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1123473282, now seen corresponding path program 1 times [2022-07-13 11:39:22,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:22,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908529701] [2022-07-13 11:39:22,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:22,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-13 11:39:22,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:22,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908529701] [2022-07-13 11:39:22,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908529701] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:22,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:22,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:22,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809843861] [2022-07-13 11:39:22,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:22,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:22,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:22,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:22,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:22,159 INFO L87 Difference]: Start difference. First operand 519 states and 790 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 11:39:22,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:22,668 INFO L93 Difference]: Finished difference Result 1066 states and 1625 transitions. [2022-07-13 11:39:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:22,668 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 162 [2022-07-13 11:39:22,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:22,670 INFO L225 Difference]: With dead ends: 1066 [2022-07-13 11:39:22,670 INFO L226 Difference]: Without dead ends: 568 [2022-07-13 11:39:22,671 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 11:39:22,671 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 36 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:22,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 569 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:39:22,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-07-13 11:39:22,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 545. [2022-07-13 11:39:22,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 1.5238970588235294) internal successors, (829), 544 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 829 transitions. [2022-07-13 11:39:22,679 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 829 transitions. Word has length 162 [2022-07-13 11:39:22,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:22,679 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 829 transitions. [2022-07-13 11:39:22,679 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 11:39:22,679 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 829 transitions. [2022-07-13 11:39:22,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 11:39:22,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:22,681 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, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:22,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 11:39:22,681 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:22,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:22,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1296259281, now seen corresponding path program 1 times [2022-07-13 11:39:22,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:22,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101368377] [2022-07-13 11:39:22,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:22,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:22,776 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-13 11:39:22,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:22,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101368377] [2022-07-13 11:39:22,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101368377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:22,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:22,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:22,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350247478] [2022-07-13 11:39:22,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:22,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:22,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:22,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:22,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:22,778 INFO L87 Difference]: Start difference. First operand 545 states and 829 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 11:39:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:23,387 INFO L93 Difference]: Finished difference Result 1093 states and 1664 transitions. [2022-07-13 11:39:23,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:23,387 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 168 [2022-07-13 11:39:23,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:23,389 INFO L225 Difference]: With dead ends: 1093 [2022-07-13 11:39:23,389 INFO L226 Difference]: Without dead ends: 569 [2022-07-13 11:39:23,390 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 11:39:23,390 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 50 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:23,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 523 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:23,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-07-13 11:39:23,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 545. [2022-07-13 11:39:23,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 1.5220588235294117) internal successors, (828), 544 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:23,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 828 transitions. [2022-07-13 11:39:23,399 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 828 transitions. Word has length 168 [2022-07-13 11:39:23,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:23,399 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 828 transitions. [2022-07-13 11:39:23,399 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 11:39:23,399 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 828 transitions. [2022-07-13 11:39:23,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 11:39:23,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:23,400 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 11:39:23,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-13 11:39:23,401 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:23,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:23,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1600024391, now seen corresponding path program 1 times [2022-07-13 11:39:23,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:23,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862379764] [2022-07-13 11:39:23,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:23,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:23,512 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 11:39:23,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:23,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862379764] [2022-07-13 11:39:23,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862379764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:23,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:23,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:39:23,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285227915] [2022-07-13 11:39:23,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:23,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:39:23,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:23,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:39:23,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:39:23,514 INFO L87 Difference]: Start difference. First operand 545 states and 828 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 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 11:39:23,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:23,552 INFO L93 Difference]: Finished difference Result 1585 states and 2424 transitions. [2022-07-13 11:39:23,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:39:23,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 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 168 [2022-07-13 11:39:23,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:23,555 INFO L225 Difference]: With dead ends: 1585 [2022-07-13 11:39:23,555 INFO L226 Difference]: Without dead ends: 1061 [2022-07-13 11:39:23,556 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 11:39:23,556 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 141 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:23,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 565 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:39:23,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-07-13 11:39:23,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1061. [2022-07-13 11:39:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 1.5207547169811322) internal successors, (1612), 1060 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1612 transitions. [2022-07-13 11:39:23,571 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1612 transitions. Word has length 168 [2022-07-13 11:39:23,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:23,571 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1612 transitions. [2022-07-13 11:39:23,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 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 11:39:23,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1612 transitions. [2022-07-13 11:39:23,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-13 11:39:23,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:23,573 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, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:23,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-13 11:39:23,573 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:23,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:23,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1262826533, now seen corresponding path program 1 times [2022-07-13 11:39:23,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:23,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056850613] [2022-07-13 11:39:23,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:23,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:23,689 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-13 11:39:23,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:23,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056850613] [2022-07-13 11:39:23,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056850613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:23,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:23,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:23,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393272757] [2022-07-13 11:39:23,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:23,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:23,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:23,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:23,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:23,691 INFO L87 Difference]: Start difference. First operand 1061 states and 1612 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:24,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:24,213 INFO L93 Difference]: Finished difference Result 2239 states and 3383 transitions. [2022-07-13 11:39:24,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:24,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2022-07-13 11:39:24,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:24,217 INFO L225 Difference]: With dead ends: 2239 [2022-07-13 11:39:24,217 INFO L226 Difference]: Without dead ends: 1199 [2022-07-13 11:39:24,218 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 11:39:24,218 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 125 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:24,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 350 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:39:24,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2022-07-13 11:39:24,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1061. [2022-07-13 11:39:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 1.5056603773584907) internal successors, (1596), 1060 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:24,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1596 transitions. [2022-07-13 11:39:24,234 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1596 transitions. Word has length 169 [2022-07-13 11:39:24,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:24,234 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1596 transitions. [2022-07-13 11:39:24,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:24,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1596 transitions. [2022-07-13 11:39:24,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-13 11:39:24,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:24,236 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:24,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-13 11:39:24,237 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:24,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:24,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1667209802, now seen corresponding path program 1 times [2022-07-13 11:39:24,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:24,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470801667] [2022-07-13 11:39:24,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:24,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:24,323 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 11:39:24,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:24,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470801667] [2022-07-13 11:39:24,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470801667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:24,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:24,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:39:24,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591130762] [2022-07-13 11:39:24,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:24,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:39:24,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:24,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:39:24,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:39:24,327 INFO L87 Difference]: Start difference. First operand 1061 states and 1596 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:24,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:24,380 INFO L93 Difference]: Finished difference Result 2585 states and 3901 transitions. [2022-07-13 11:39:24,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:39:24,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2022-07-13 11:39:24,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:24,385 INFO L225 Difference]: With dead ends: 2585 [2022-07-13 11:39:24,385 INFO L226 Difference]: Without dead ends: 1545 [2022-07-13 11:39:24,386 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 11:39:24,386 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 138 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:24,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 566 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:39:24,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2022-07-13 11:39:24,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1545. [2022-07-13 11:39:24,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1544 states have (on average 1.503238341968912) internal successors, (2321), 1544 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:24,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2321 transitions. [2022-07-13 11:39:24,421 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2321 transitions. Word has length 169 [2022-07-13 11:39:24,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:24,421 INFO L495 AbstractCegarLoop]: Abstraction has 1545 states and 2321 transitions. [2022-07-13 11:39:24,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:24,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2321 transitions. [2022-07-13 11:39:24,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-13 11:39:24,424 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:24,424 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:24,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-13 11:39:24,424 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:24,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:24,425 INFO L85 PathProgramCache]: Analyzing trace with hash 520999631, now seen corresponding path program 1 times [2022-07-13 11:39:24,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:24,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903422916] [2022-07-13 11:39:24,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:24,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:24,517 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 11:39:24,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:24,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903422916] [2022-07-13 11:39:24,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903422916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:24,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:24,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:39:24,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186529900] [2022-07-13 11:39:24,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:24,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:39:24,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:24,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:39:24,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:39:24,519 INFO L87 Difference]: Start difference. First operand 1545 states and 2321 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 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 11:39:24,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:24,565 INFO L93 Difference]: Finished difference Result 3544 states and 5339 transitions. [2022-07-13 11:39:24,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:39:24,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 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 170 [2022-07-13 11:39:24,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:24,570 INFO L225 Difference]: With dead ends: 3544 [2022-07-13 11:39:24,571 INFO L226 Difference]: Without dead ends: 2020 [2022-07-13 11:39:24,572 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 11:39:24,573 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 140 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:24,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 446 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:39:24,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2022-07-13 11:39:24,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2022-07-13 11:39:24,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 2019 states have (on average 1.5027241208519069) internal successors, (3034), 2019 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:24,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3034 transitions. [2022-07-13 11:39:24,604 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3034 transitions. Word has length 170 [2022-07-13 11:39:24,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:24,604 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 3034 transitions. [2022-07-13 11:39:24,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 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 11:39:24,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3034 transitions. [2022-07-13 11:39:24,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-13 11:39:24,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:24,607 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:24,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-13 11:39:24,608 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:24,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:24,608 INFO L85 PathProgramCache]: Analyzing trace with hash -427052335, now seen corresponding path program 1 times [2022-07-13 11:39:24,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:24,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715695192] [2022-07-13 11:39:24,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:24,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:24,688 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 11:39:24,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:24,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715695192] [2022-07-13 11:39:24,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715695192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:24,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:24,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:39:24,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312061168] [2022-07-13 11:39:24,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:24,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:39:24,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:24,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:39:24,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:39:24,690 INFO L87 Difference]: Start difference. First operand 2020 states and 3034 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 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 11:39:24,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:24,732 INFO L93 Difference]: Finished difference Result 4046 states and 6080 transitions. [2022-07-13 11:39:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:39:24,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 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 170 [2022-07-13 11:39:24,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:24,737 INFO L225 Difference]: With dead ends: 4046 [2022-07-13 11:39:24,738 INFO L226 Difference]: Without dead ends: 2047 [2022-07-13 11:39:24,741 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 11:39:24,741 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:24,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 412 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:39:24,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2022-07-13 11:39:24,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 2047. [2022-07-13 11:39:24,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2046 states have (on average 1.5) internal successors, (3069), 2046 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:24,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 3069 transitions. [2022-07-13 11:39:24,774 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 3069 transitions. Word has length 170 [2022-07-13 11:39:24,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:24,774 INFO L495 AbstractCegarLoop]: Abstraction has 2047 states and 3069 transitions. [2022-07-13 11:39:24,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 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 11:39:24,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 3069 transitions. [2022-07-13 11:39:24,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-13 11:39:24,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:24,795 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:24,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-13 11:39:24,795 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:24,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:24,796 INFO L85 PathProgramCache]: Analyzing trace with hash -41189933, now seen corresponding path program 1 times [2022-07-13 11:39:24,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:24,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321820280] [2022-07-13 11:39:24,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:24,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:24,878 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 11:39:24,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:24,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321820280] [2022-07-13 11:39:24,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321820280] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:24,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:24,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:39:24,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225152518] [2022-07-13 11:39:24,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:24,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:39:24,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:24,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:39:24,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:39:24,879 INFO L87 Difference]: Start difference. First operand 2047 states and 3069 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:24,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:24,917 INFO L93 Difference]: Finished difference Result 4075 states and 6116 transitions. [2022-07-13 11:39:24,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:39:24,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2022-07-13 11:39:24,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:24,930 INFO L225 Difference]: With dead ends: 4075 [2022-07-13 11:39:24,930 INFO L226 Difference]: Without dead ends: 2049 [2022-07-13 11:39:24,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:39:24,933 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:24,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 391 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:39:24,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2022-07-13 11:39:24,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2049. [2022-07-13 11:39:24,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 2048 states have (on average 1.49951171875) internal successors, (3071), 2048 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:24,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 3071 transitions. [2022-07-13 11:39:24,974 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 3071 transitions. Word has length 170 [2022-07-13 11:39:24,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:24,974 INFO L495 AbstractCegarLoop]: Abstraction has 2049 states and 3071 transitions. [2022-07-13 11:39:24,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:24,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 3071 transitions. [2022-07-13 11:39:24,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-07-13 11:39:24,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:24,977 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:24,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-13 11:39:24,977 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:24,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:24,977 INFO L85 PathProgramCache]: Analyzing trace with hash -294401179, now seen corresponding path program 1 times [2022-07-13 11:39:24,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:24,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512389465] [2022-07-13 11:39:24,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:24,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-13 11:39:25,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:25,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512389465] [2022-07-13 11:39:25,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512389465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:25,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:25,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:25,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578078141] [2022-07-13 11:39:25,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:25,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:25,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:25,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:25,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:25,093 INFO L87 Difference]: Start difference. First operand 2049 states and 3071 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:26,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:26,107 INFO L93 Difference]: Finished difference Result 4404 states and 6578 transitions. [2022-07-13 11:39:26,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:26,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 263 [2022-07-13 11:39:26,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:26,128 INFO L225 Difference]: With dead ends: 4404 [2022-07-13 11:39:26,129 INFO L226 Difference]: Without dead ends: 2378 [2022-07-13 11:39:26,130 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 11:39:26,131 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 70 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:26,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 629 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 11:39:26,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2022-07-13 11:39:26,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 2169. [2022-07-13 11:39:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2168 states have (on average 1.5013837638376384) internal successors, (3255), 2168 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:26,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3255 transitions. [2022-07-13 11:39:26,162 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3255 transitions. Word has length 263 [2022-07-13 11:39:26,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:26,162 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3255 transitions. [2022-07-13 11:39:26,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:26,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3255 transitions. [2022-07-13 11:39:26,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-07-13 11:39:26,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:26,165 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:26,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-13 11:39:26,165 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:26,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:26,166 INFO L85 PathProgramCache]: Analyzing trace with hash -363444605, now seen corresponding path program 1 times [2022-07-13 11:39:26,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:26,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437229377] [2022-07-13 11:39:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:26,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:26,291 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-13 11:39:26,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:26,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437229377] [2022-07-13 11:39:26,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437229377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:26,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:26,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:26,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991696917] [2022-07-13 11:39:26,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:26,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:26,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:26,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:26,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:26,295 INFO L87 Difference]: Start difference. First operand 2169 states and 3255 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:27,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:27,496 INFO L93 Difference]: Finished difference Result 4516 states and 6750 transitions. [2022-07-13 11:39:27,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:27,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 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 264 [2022-07-13 11:39:27,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:27,500 INFO L225 Difference]: With dead ends: 4516 [2022-07-13 11:39:27,500 INFO L226 Difference]: Without dead ends: 2370 [2022-07-13 11:39:27,502 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 11:39:27,503 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 67 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:27,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 625 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 11:39:27,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2022-07-13 11:39:27,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 2173. [2022-07-13 11:39:27,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2173 states, 2172 states have (on average 1.5004604051565378) internal successors, (3259), 2172 states have internal predecessors, (3259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:27,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 3259 transitions. [2022-07-13 11:39:27,554 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 3259 transitions. Word has length 264 [2022-07-13 11:39:27,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:27,554 INFO L495 AbstractCegarLoop]: Abstraction has 2173 states and 3259 transitions. [2022-07-13 11:39:27,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:27,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 3259 transitions. [2022-07-13 11:39:27,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-13 11:39:27,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:27,569 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:27,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-13 11:39:27,570 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:27,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:27,570 INFO L85 PathProgramCache]: Analyzing trace with hash -117417430, now seen corresponding path program 1 times [2022-07-13 11:39:27,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:27,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865664561] [2022-07-13 11:39:27,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:27,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-13 11:39:27,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:27,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865664561] [2022-07-13 11:39:27,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865664561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:27,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:27,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:27,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659294603] [2022-07-13 11:39:27,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:27,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:27,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:27,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:27,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:27,683 INFO L87 Difference]: Start difference. First operand 2173 states and 3259 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:29,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:29,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:29,971 INFO L93 Difference]: Finished difference Result 4520 states and 6750 transitions. [2022-07-13 11:39:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:29,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-07-13 11:39:29,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:29,975 INFO L225 Difference]: With dead ends: 4520 [2022-07-13 11:39:29,975 INFO L226 Difference]: Without dead ends: 2370 [2022-07-13 11:39:29,976 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 11:39:29,978 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 69 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:29,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 623 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 248 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 11:39:29,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2022-07-13 11:39:30,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 2173. [2022-07-13 11:39:30,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2173 states, 2172 states have (on average 1.4986187845303867) internal successors, (3255), 2172 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:30,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 3255 transitions. [2022-07-13 11:39:30,015 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 3255 transitions. Word has length 266 [2022-07-13 11:39:30,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:30,015 INFO L495 AbstractCegarLoop]: Abstraction has 2173 states and 3255 transitions. [2022-07-13 11:39:30,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:30,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 3255 transitions. [2022-07-13 11:39:30,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-07-13 11:39:30,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:30,018 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:30,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-13 11:39:30,018 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:30,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:30,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1959137556, now seen corresponding path program 1 times [2022-07-13 11:39:30,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:30,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769475809] [2022-07-13 11:39:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:30,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:30,154 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 389 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-13 11:39:30,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:30,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769475809] [2022-07-13 11:39:30,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769475809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:30,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:30,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:30,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126284431] [2022-07-13 11:39:30,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:30,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:30,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:30,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:30,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:30,156 INFO L87 Difference]: Start difference. First operand 2173 states and 3255 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:31,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:31,134 INFO L93 Difference]: Finished difference Result 4488 states and 6690 transitions. [2022-07-13 11:39:31,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:31,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2022-07-13 11:39:31,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:31,139 INFO L225 Difference]: With dead ends: 4488 [2022-07-13 11:39:31,139 INFO L226 Difference]: Without dead ends: 2338 [2022-07-13 11:39:31,141 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 11:39:31,143 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 58 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:31,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 613 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 11:39:31,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2022-07-13 11:39:31,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 2173. [2022-07-13 11:39:31,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2173 states, 2172 states have (on average 1.4967771639042358) internal successors, (3251), 2172 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:31,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 3251 transitions. [2022-07-13 11:39:31,173 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 3251 transitions. Word has length 267 [2022-07-13 11:39:31,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:31,173 INFO L495 AbstractCegarLoop]: Abstraction has 2173 states and 3251 transitions. [2022-07-13 11:39:31,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:31,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 3251 transitions. [2022-07-13 11:39:31,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-13 11:39:31,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:31,176 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:31,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-13 11:39:31,176 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:31,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:31,177 INFO L85 PathProgramCache]: Analyzing trace with hash 842003861, now seen corresponding path program 1 times [2022-07-13 11:39:31,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:31,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26341995] [2022-07-13 11:39:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:31,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-13 11:39:31,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:31,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26341995] [2022-07-13 11:39:31,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26341995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:31,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:31,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:31,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726320858] [2022-07-13 11:39:31,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:31,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:31,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:31,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:31,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:31,322 INFO L87 Difference]: Start difference. First operand 2173 states and 3251 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:31,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:31,980 INFO L93 Difference]: Finished difference Result 4480 states and 6674 transitions. [2022-07-13 11:39:31,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:31,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2022-07-13 11:39:31,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:31,984 INFO L225 Difference]: With dead ends: 4480 [2022-07-13 11:39:31,984 INFO L226 Difference]: Without dead ends: 2330 [2022-07-13 11:39:31,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:39:31,986 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 49 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:31,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 609 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:31,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2022-07-13 11:39:32,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2153. [2022-07-13 11:39:32,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 1.5013940520446096) internal successors, (3231), 2152 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:32,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3231 transitions. [2022-07-13 11:39:32,028 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3231 transitions. Word has length 274 [2022-07-13 11:39:32,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:32,028 INFO L495 AbstractCegarLoop]: Abstraction has 2153 states and 3231 transitions. [2022-07-13 11:39:32,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:32,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3231 transitions. [2022-07-13 11:39:32,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-07-13 11:39:32,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:32,031 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:32,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-13 11:39:32,031 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:32,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:32,032 INFO L85 PathProgramCache]: Analyzing trace with hash 447101225, now seen corresponding path program 1 times [2022-07-13 11:39:32,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:32,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807198788] [2022-07-13 11:39:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:32,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 397 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-13 11:39:32,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:32,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807198788] [2022-07-13 11:39:32,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807198788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:32,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:32,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:32,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791356584] [2022-07-13 11:39:32,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:32,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:32,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:32,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:32,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:32,148 INFO L87 Difference]: Start difference. First operand 2153 states and 3231 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:32,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:32,940 INFO L93 Difference]: Finished difference Result 4420 states and 6602 transitions. [2022-07-13 11:39:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:32,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 278 [2022-07-13 11:39:32,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:32,943 INFO L225 Difference]: With dead ends: 4420 [2022-07-13 11:39:32,943 INFO L226 Difference]: Without dead ends: 2290 [2022-07-13 11:39:32,944 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 11:39:32,945 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 65 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:32,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 595 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:39:32,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2022-07-13 11:39:32,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 2153. [2022-07-13 11:39:32,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 1.4995353159851301) internal successors, (3227), 2152 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3227 transitions. [2022-07-13 11:39:32,981 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3227 transitions. Word has length 278 [2022-07-13 11:39:32,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:32,981 INFO L495 AbstractCegarLoop]: Abstraction has 2153 states and 3227 transitions. [2022-07-13 11:39:32,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:32,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3227 transitions. [2022-07-13 11:39:32,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-13 11:39:32,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:32,984 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:32,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-13 11:39:32,984 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:32,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:32,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1893596487, now seen corresponding path program 1 times [2022-07-13 11:39:32,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:32,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198239911] [2022-07-13 11:39:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:32,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-13 11:39:33,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:33,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198239911] [2022-07-13 11:39:33,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198239911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:33,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:33,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:33,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010391403] [2022-07-13 11:39:33,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:33,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:33,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:33,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:33,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:33,095 INFO L87 Difference]: Start difference. First operand 2153 states and 3227 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:34,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:35,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:35,142 INFO L93 Difference]: Finished difference Result 4520 states and 6766 transitions. [2022-07-13 11:39:35,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:35,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2022-07-13 11:39:35,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:35,145 INFO L225 Difference]: With dead ends: 4520 [2022-07-13 11:39:35,145 INFO L226 Difference]: Without dead ends: 2390 [2022-07-13 11:39:35,146 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 11:39:35,146 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 46 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:35,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 605 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 11:39:35,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2022-07-13 11:39:35,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 2265. [2022-07-13 11:39:35,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2265 states, 2264 states have (on average 1.4995583038869258) internal successors, (3395), 2264 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:35,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 3395 transitions. [2022-07-13 11:39:35,180 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 3395 transitions. Word has length 291 [2022-07-13 11:39:35,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:35,180 INFO L495 AbstractCegarLoop]: Abstraction has 2265 states and 3395 transitions. [2022-07-13 11:39:35,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:35,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 3395 transitions. [2022-07-13 11:39:35,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-07-13 11:39:35,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:35,184 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:35,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-13 11:39:35,185 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:35,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:35,185 INFO L85 PathProgramCache]: Analyzing trace with hash -963563067, now seen corresponding path program 1 times [2022-07-13 11:39:35,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:35,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951195885] [2022-07-13 11:39:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:35,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 474 proven. 106 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-13 11:39:35,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:35,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951195885] [2022-07-13 11:39:35,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951195885] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:39:35,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751544988] [2022-07-13 11:39:35,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:35,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:39:35,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:39:35,314 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 11:39:35,317 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 11:39:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:36,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:39:36,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:39:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-07-13 11:39:36,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:39:36,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751544988] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:36,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:39:36,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-13 11:39:36,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715724359] [2022-07-13 11:39:36,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:36,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:39:36,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:36,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:39:36,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:39:36,245 INFO L87 Difference]: Start difference. First operand 2265 states and 3395 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:36,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:36,314 INFO L93 Difference]: Finished difference Result 5083 states and 7638 transitions. [2022-07-13 11:39:36,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:39:36,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 293 [2022-07-13 11:39:36,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:36,320 INFO L225 Difference]: With dead ends: 5083 [2022-07-13 11:39:36,320 INFO L226 Difference]: Without dead ends: 2841 [2022-07-13 11:39:36,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:39:36,322 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 155 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:36,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 373 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:39:36,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2022-07-13 11:39:36,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 2841. [2022-07-13 11:39:36,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2841 states, 2840 states have (on average 1.5024647887323943) internal successors, (4267), 2840 states have internal predecessors, (4267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 4267 transitions. [2022-07-13 11:39:36,365 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 4267 transitions. Word has length 293 [2022-07-13 11:39:36,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:36,366 INFO L495 AbstractCegarLoop]: Abstraction has 2841 states and 4267 transitions. [2022-07-13 11:39:36,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:36,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 4267 transitions. [2022-07-13 11:39:36,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-07-13 11:39:36,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:36,370 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:36,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 11:39:36,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-07-13 11:39:36,584 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:36,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:36,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1413839336, now seen corresponding path program 1 times [2022-07-13 11:39:36,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:36,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825993160] [2022-07-13 11:39:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:36,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:36,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 1019 proven. 0 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-07-13 11:39:36,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:36,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825993160] [2022-07-13 11:39:36,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825993160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:36,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:36,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:36,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154131413] [2022-07-13 11:39:36,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:36,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:36,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:36,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:36,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:36,745 INFO L87 Difference]: Start difference. First operand 2841 states and 4267 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:37,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:37,226 INFO L93 Difference]: Finished difference Result 5830 states and 8717 transitions. [2022-07-13 11:39:37,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:37,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 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 420 [2022-07-13 11:39:37,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:37,230 INFO L225 Difference]: With dead ends: 5830 [2022-07-13 11:39:37,230 INFO L226 Difference]: Without dead ends: 3012 [2022-07-13 11:39:37,232 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 11:39:37,232 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 35 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:37,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 593 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:39:37,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2022-07-13 11:39:37,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 2916. [2022-07-13 11:39:37,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2915 states have (on average 1.492967409948542) internal successors, (4352), 2915 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:37,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4352 transitions. [2022-07-13 11:39:37,272 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4352 transitions. Word has length 420 [2022-07-13 11:39:37,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:37,272 INFO L495 AbstractCegarLoop]: Abstraction has 2916 states and 4352 transitions. [2022-07-13 11:39:37,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:37,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4352 transitions. [2022-07-13 11:39:37,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-07-13 11:39:37,276 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:37,277 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:37,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-13 11:39:37,277 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:37,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:37,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1962379558, now seen corresponding path program 1 times [2022-07-13 11:39:37,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:37,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594143463] [2022-07-13 11:39:37,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:37,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 750 proven. 0 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-07-13 11:39:37,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:37,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594143463] [2022-07-13 11:39:37,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594143463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:37,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:37,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:39:37,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739112019] [2022-07-13 11:39:37,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:37,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:39:37,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:37,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:39:37,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:39:37,461 INFO L87 Difference]: Start difference. First operand 2916 states and 4352 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 11:39:37,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:37,529 INFO L93 Difference]: Finished difference Result 6400 states and 9569 transitions. [2022-07-13 11:39:37,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:39:37,529 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 420 [2022-07-13 11:39:37,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:37,532 INFO L225 Difference]: With dead ends: 6400 [2022-07-13 11:39:37,533 INFO L226 Difference]: Without dead ends: 3507 [2022-07-13 11:39:37,535 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 11:39:37,535 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 136 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:37,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 372 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:39:37,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2022-07-13 11:39:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 3507. [2022-07-13 11:39:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 3506 states have (on average 1.4951511694238449) internal successors, (5242), 3506 states have internal predecessors, (5242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 5242 transitions. [2022-07-13 11:39:37,587 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 5242 transitions. Word has length 420 [2022-07-13 11:39:37,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:37,587 INFO L495 AbstractCegarLoop]: Abstraction has 3507 states and 5242 transitions. [2022-07-13 11:39:37,588 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 11:39:37,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 5242 transitions. [2022-07-13 11:39:37,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-07-13 11:39:37,592 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:37,593 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:37,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-13 11:39:37,593 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:37,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:37,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1740827691, now seen corresponding path program 1 times [2022-07-13 11:39:37,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:37,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018213911] [2022-07-13 11:39:37,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:37,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 921 proven. 330 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-07-13 11:39:37,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:37,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018213911] [2022-07-13 11:39:37,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018213911] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:39:37,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536543927] [2022-07-13 11:39:37,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:37,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:39:37,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:39:37,993 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:39:37,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 11:39:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:38,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 1963 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-13 11:39:38,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:39:38,975 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:39:38,976 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:39:39,047 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-07-13 11:39:39,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 10 [2022-07-13 11:39:39,060 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:39:39,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-07-13 11:39:39,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-07-13 11:39:39,110 INFO L356 Elim1Store]: treesize reduction 60, result has 39.4 percent of original size [2022-07-13 11:39:39,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 55 [2022-07-13 11:39:39,177 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-07-13 11:39:39,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 36 [2022-07-13 11:39:39,375 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:39:39,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 11 [2022-07-13 11:39:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 916 proven. 51 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2022-07-13 11:39:39,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:39:39,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 53 [2022-07-13 11:39:39,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 41 [2022-07-13 11:39:43,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 88 [2022-07-13 11:39:43,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 922 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-07-13 11:39:43,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536543927] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 11:39:43,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:39:43,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 12] total 22 [2022-07-13 11:39:43,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674875285] [2022-07-13 11:39:43,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:43,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 11:39:43,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:43,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 11:39:43,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=376, Unknown=1, NotChecked=0, Total=462 [2022-07-13 11:39:43,168 INFO L87 Difference]: Start difference. First operand 3507 states and 5242 transitions. Second operand has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:45,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:53,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:53,789 INFO L93 Difference]: Finished difference Result 9613 states and 14334 transitions. [2022-07-13 11:39:53,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 11:39:53,789 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 0 states have call successors, (0), 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 421 [2022-07-13 11:39:53,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:53,794 INFO L225 Difference]: With dead ends: 9613 [2022-07-13 11:39:53,794 INFO L226 Difference]: Without dead ends: 6129 [2022-07-13 11:39:53,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 859 GetRequests, 835 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=121, Invalid=526, Unknown=3, NotChecked=0, Total=650 [2022-07-13 11:39:53,797 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 389 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:53,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 974 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 642 Invalid, 0 Unknown, 189 Unchecked, 2.6s Time] [2022-07-13 11:39:53,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6129 states. [2022-07-13 11:39:53,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6129 to 5339. [2022-07-13 11:39:53,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5339 states, 5338 states have (on average 1.5044960659423006) internal successors, (8031), 5338 states have internal predecessors, (8031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:53,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 8031 transitions. [2022-07-13 11:39:53,905 INFO L78 Accepts]: Start accepts. Automaton has 5339 states and 8031 transitions. Word has length 421 [2022-07-13 11:39:53,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:53,905 INFO L495 AbstractCegarLoop]: Abstraction has 5339 states and 8031 transitions. [2022-07-13 11:39:53,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:53,906 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states and 8031 transitions. [2022-07-13 11:39:53,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-07-13 11:39:53,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:53,912 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:53,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 11:39:54,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-07-13 11:39:54,127 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:54,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:54,128 INFO L85 PathProgramCache]: Analyzing trace with hash 165873834, now seen corresponding path program 1 times [2022-07-13 11:39:54,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:54,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170451682] [2022-07-13 11:39:54,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:54,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 970 proven. 0 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2022-07-13 11:39:54,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:54,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170451682] [2022-07-13 11:39:54,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170451682] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:54,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:54,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:54,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18160577] [2022-07-13 11:39:54,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:54,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:54,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:54,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:54,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:54,292 INFO L87 Difference]: Start difference. First operand 5339 states and 8031 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:55,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:55,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:55,993 INFO L93 Difference]: Finished difference Result 10819 states and 16241 transitions. [2022-07-13 11:39:55,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:55,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 422 [2022-07-13 11:39:55,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:55,999 INFO L225 Difference]: With dead ends: 10819 [2022-07-13 11:39:55,999 INFO L226 Difference]: Without dead ends: 5503 [2022-07-13 11:39:56,002 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 11:39:56,003 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 48 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:56,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 591 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 11:39:56,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5503 states. [2022-07-13 11:39:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5503 to 5339. [2022-07-13 11:39:56,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5339 states, 5338 states have (on average 1.5026227051330086) internal successors, (8021), 5338 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:56,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 8021 transitions. [2022-07-13 11:39:56,087 INFO L78 Accepts]: Start accepts. Automaton has 5339 states and 8021 transitions. Word has length 422 [2022-07-13 11:39:56,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:56,087 INFO L495 AbstractCegarLoop]: Abstraction has 5339 states and 8021 transitions. [2022-07-13 11:39:56,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:56,087 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states and 8021 transitions. [2022-07-13 11:39:56,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-07-13 11:39:56,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:56,093 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:56,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-13 11:39:56,093 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:56,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:56,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1014141511, now seen corresponding path program 1 times [2022-07-13 11:39:56,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:56,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919954667] [2022-07-13 11:39:56,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:56,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:56,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 1008 proven. 0 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2022-07-13 11:39:56,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:56,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919954667] [2022-07-13 11:39:56,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919954667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:56,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:56,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:56,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315241561] [2022-07-13 11:39:56,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:56,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:56,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:56,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:56,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:56,251 INFO L87 Difference]: Start difference. First operand 5339 states and 8021 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:57,663 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 11:39:57,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:57,947 INFO L93 Difference]: Finished difference Result 10813 states and 16215 transitions. [2022-07-13 11:39:57,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:57,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 423 [2022-07-13 11:39:57,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:57,954 INFO L225 Difference]: With dead ends: 10813 [2022-07-13 11:39:57,954 INFO L226 Difference]: Without dead ends: 5449 [2022-07-13 11:39:57,958 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 11:39:57,959 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 32 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:57,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 589 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 11:39:57,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2022-07-13 11:39:58,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 5297. [2022-07-13 11:39:58,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 5296 states have (on average 1.5047205438066464) internal successors, (7969), 5296 states have internal predecessors, (7969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 7969 transitions. [2022-07-13 11:39:58,123 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 7969 transitions. Word has length 423 [2022-07-13 11:39:58,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:58,123 INFO L495 AbstractCegarLoop]: Abstraction has 5297 states and 7969 transitions. [2022-07-13 11:39:58,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 7969 transitions. [2022-07-13 11:39:58,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-07-13 11:39:58,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:58,138 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:58,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-13 11:39:58,138 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:58,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:58,138 INFO L85 PathProgramCache]: Analyzing trace with hash 739346400, now seen corresponding path program 1 times [2022-07-13 11:39:58,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:58,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448000882] [2022-07-13 11:39:58,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:58,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:58,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 997 proven. 0 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2022-07-13 11:39:58,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:58,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448000882] [2022-07-13 11:39:58,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448000882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:58,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:58,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:58,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448512929] [2022-07-13 11:39:58,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:58,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:58,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:58,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:58,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:58,296 INFO L87 Difference]: Start difference. First operand 5297 states and 7969 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:59,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:59,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:59,877 INFO L93 Difference]: Finished difference Result 10723 states and 16105 transitions. [2022-07-13 11:39:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:59,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 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 428 [2022-07-13 11:39:59,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:59,883 INFO L225 Difference]: With dead ends: 10723 [2022-07-13 11:39:59,883 INFO L226 Difference]: Without dead ends: 5449 [2022-07-13 11:39:59,887 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 11:39:59,887 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 40 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:59,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 587 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 11:39:59,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2022-07-13 11:39:59,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 5297. [2022-07-13 11:39:59,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 5296 states have (on average 1.502832326283988) internal successors, (7959), 5296 states have internal predecessors, (7959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:59,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 7959 transitions. [2022-07-13 11:40:00,000 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 7959 transitions. Word has length 428 [2022-07-13 11:40:00,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:00,000 INFO L495 AbstractCegarLoop]: Abstraction has 5297 states and 7959 transitions. [2022-07-13 11:40:00,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:00,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 7959 transitions. [2022-07-13 11:40:00,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-07-13 11:40:00,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:00,005 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:00,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-13 11:40:00,006 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:00,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:00,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1766169954, now seen corresponding path program 1 times [2022-07-13 11:40:00,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:00,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169610704] [2022-07-13 11:40:00,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:00,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1689 backedges. 1006 proven. 0 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2022-07-13 11:40:00,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:00,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169610704] [2022-07-13 11:40:00,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169610704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:00,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:00,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:00,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568987713] [2022-07-13 11:40:00,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:00,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:00,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:00,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:00,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:00,154 INFO L87 Difference]: Start difference. First operand 5297 states and 7959 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:00,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:00,786 INFO L93 Difference]: Finished difference Result 10683 states and 16035 transitions. [2022-07-13 11:40:00,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:00,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 429 [2022-07-13 11:40:00,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:00,820 INFO L225 Difference]: With dead ends: 10683 [2022-07-13 11:40:00,821 INFO L226 Difference]: Without dead ends: 5409 [2022-07-13 11:40:00,822 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 11:40:00,822 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 34 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:00,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 579 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:40:00,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5409 states. [2022-07-13 11:40:00,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5409 to 5297. [2022-07-13 11:40:00,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 5296 states have (on average 1.5009441087613293) internal successors, (7949), 5296 states have internal predecessors, (7949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:00,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 7949 transitions. [2022-07-13 11:40:00,907 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 7949 transitions. Word has length 429 [2022-07-13 11:40:00,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:00,907 INFO L495 AbstractCegarLoop]: Abstraction has 5297 states and 7949 transitions. [2022-07-13 11:40:00,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:00,907 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 7949 transitions. [2022-07-13 11:40:00,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-07-13 11:40:00,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:00,912 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:00,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-13 11:40:00,913 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:00,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:00,913 INFO L85 PathProgramCache]: Analyzing trace with hash 880480681, now seen corresponding path program 1 times [2022-07-13 11:40:00,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:00,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833298474] [2022-07-13 11:40:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:00,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1757 backedges. 1004 proven. 0 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2022-07-13 11:40:01,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:01,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833298474] [2022-07-13 11:40:01,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833298474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:01,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:01,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:01,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675670848] [2022-07-13 11:40:01,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:01,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:01,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:01,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:01,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:01,047 INFO L87 Difference]: Start difference. First operand 5297 states and 7949 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:02,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:02,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:02,660 INFO L93 Difference]: Finished difference Result 11137 states and 16683 transitions. [2022-07-13 11:40:02,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:02,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 437 [2022-07-13 11:40:02,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:02,665 INFO L225 Difference]: With dead ends: 11137 [2022-07-13 11:40:02,665 INFO L226 Difference]: Without dead ends: 5863 [2022-07-13 11:40:02,668 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 11:40:02,668 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 81 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:02,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 575 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 11:40:02,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5863 states. [2022-07-13 11:40:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5863 to 5369. [2022-07-13 11:40:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5369 states, 5368 states have (on average 1.4990685543964233) internal successors, (8047), 5368 states have internal predecessors, (8047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:02,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5369 states to 5369 states and 8047 transitions. [2022-07-13 11:40:02,762 INFO L78 Accepts]: Start accepts. Automaton has 5369 states and 8047 transitions. Word has length 437 [2022-07-13 11:40:02,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:02,763 INFO L495 AbstractCegarLoop]: Abstraction has 5369 states and 8047 transitions. [2022-07-13 11:40:02,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:02,763 INFO L276 IsEmpty]: Start isEmpty. Operand 5369 states and 8047 transitions. [2022-07-13 11:40:02,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-07-13 11:40:02,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:02,768 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:02,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-13 11:40:02,768 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:02,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:02,768 INFO L85 PathProgramCache]: Analyzing trace with hash -197759248, now seen corresponding path program 1 times [2022-07-13 11:40:02,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:02,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726301030] [2022-07-13 11:40:02,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:02,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1757 backedges. 1004 proven. 0 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2022-07-13 11:40:02,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:02,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726301030] [2022-07-13 11:40:02,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726301030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:02,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:02,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:02,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851735950] [2022-07-13 11:40:02,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:02,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:02,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:02,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:02,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:02,935 INFO L87 Difference]: Start difference. First operand 5369 states and 8047 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:04,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:04,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:04,853 INFO L93 Difference]: Finished difference Result 11059 states and 16529 transitions. [2022-07-13 11:40:04,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:04,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 438 [2022-07-13 11:40:04,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:04,858 INFO L225 Difference]: With dead ends: 11059 [2022-07-13 11:40:04,858 INFO L226 Difference]: Without dead ends: 5713 [2022-07-13 11:40:04,861 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 11:40:04,862 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 82 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:04,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 619 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 11:40:04,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5713 states. [2022-07-13 11:40:04,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5713 to 5369. [2022-07-13 11:40:04,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5369 states, 5368 states have (on average 1.4972056631892698) internal successors, (8037), 5368 states have internal predecessors, (8037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5369 states to 5369 states and 8037 transitions. [2022-07-13 11:40:04,977 INFO L78 Accepts]: Start accepts. Automaton has 5369 states and 8037 transitions. Word has length 438 [2022-07-13 11:40:04,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:04,977 INFO L495 AbstractCegarLoop]: Abstraction has 5369 states and 8037 transitions. [2022-07-13 11:40:04,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:04,978 INFO L276 IsEmpty]: Start isEmpty. Operand 5369 states and 8037 transitions. [2022-07-13 11:40:04,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-07-13 11:40:04,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:04,983 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:04,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-13 11:40:04,983 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:04,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:04,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1286524218, now seen corresponding path program 1 times [2022-07-13 11:40:04,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:04,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557274603] [2022-07-13 11:40:04,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:04,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1879 backedges. 1120 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2022-07-13 11:40:05,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:05,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557274603] [2022-07-13 11:40:05,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557274603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:05,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:05,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:05,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836322240] [2022-07-13 11:40:05,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:05,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:05,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:05,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:05,122 INFO L87 Difference]: Start difference. First operand 5369 states and 8037 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:06,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:06,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:06,640 INFO L93 Difference]: Finished difference Result 10757 states and 16077 transitions. [2022-07-13 11:40:06,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:06,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 444 [2022-07-13 11:40:06,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:06,646 INFO L225 Difference]: With dead ends: 10757 [2022-07-13 11:40:06,646 INFO L226 Difference]: Without dead ends: 5411 [2022-07-13 11:40:06,650 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 11:40:06,651 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 14 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:06,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 559 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 11:40:06,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2022-07-13 11:40:06,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 5379. [2022-07-13 11:40:06,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5379 states, 5378 states have (on average 1.491074748977315) internal successors, (8019), 5378 states have internal predecessors, (8019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:06,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 8019 transitions. [2022-07-13 11:40:06,762 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 8019 transitions. Word has length 444 [2022-07-13 11:40:06,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:06,762 INFO L495 AbstractCegarLoop]: Abstraction has 5379 states and 8019 transitions. [2022-07-13 11:40:06,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:06,762 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 8019 transitions. [2022-07-13 11:40:06,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-07-13 11:40:06,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:06,767 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:06,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-13 11:40:06,767 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:06,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:06,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2012653471, now seen corresponding path program 1 times [2022-07-13 11:40:06,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:06,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292277312] [2022-07-13 11:40:06,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:06,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1879 backedges. 1166 proven. 0 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2022-07-13 11:40:06,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:06,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292277312] [2022-07-13 11:40:06,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292277312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:06,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:06,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:06,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90316748] [2022-07-13 11:40:06,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:06,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:06,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:06,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:06,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:06,905 INFO L87 Difference]: Start difference. First operand 5379 states and 8019 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:07,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:08,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:08,225 INFO L93 Difference]: Finished difference Result 11079 states and 16473 transitions. [2022-07-13 11:40:08,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:08,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 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 445 [2022-07-13 11:40:08,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:08,231 INFO L225 Difference]: With dead ends: 11079 [2022-07-13 11:40:08,231 INFO L226 Difference]: Without dead ends: 5723 [2022-07-13 11:40:08,234 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 11:40:08,234 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 63 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:08,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 575 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 11:40:08,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5723 states. [2022-07-13 11:40:08,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5723 to 5379. [2022-07-13 11:40:08,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5379 states, 5378 states have (on average 1.4892153216809223) internal successors, (8009), 5378 states have internal predecessors, (8009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:08,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 8009 transitions. [2022-07-13 11:40:08,330 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 8009 transitions. Word has length 445 [2022-07-13 11:40:08,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:08,330 INFO L495 AbstractCegarLoop]: Abstraction has 5379 states and 8009 transitions. [2022-07-13 11:40:08,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:08,330 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 8009 transitions. [2022-07-13 11:40:08,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-07-13 11:40:08,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:08,335 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:08,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-13 11:40:08,335 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:08,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:08,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2093997469, now seen corresponding path program 1 times [2022-07-13 11:40:08,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:08,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572757215] [2022-07-13 11:40:08,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:08,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1888 backedges. 1175 proven. 0 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2022-07-13 11:40:08,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:08,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572757215] [2022-07-13 11:40:08,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572757215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:08,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:08,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:08,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311407347] [2022-07-13 11:40:08,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:08,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:08,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:08,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:08,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:08,524 INFO L87 Difference]: Start difference. First operand 5379 states and 8009 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:09,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:09,461 INFO L93 Difference]: Finished difference Result 11059 states and 16433 transitions. [2022-07-13 11:40:09,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:09,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 446 [2022-07-13 11:40:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:09,467 INFO L225 Difference]: With dead ends: 11059 [2022-07-13 11:40:09,467 INFO L226 Difference]: Without dead ends: 5703 [2022-07-13 11:40:09,470 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 11:40:09,471 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 60 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:09,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 577 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:40:09,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2022-07-13 11:40:09,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5379. [2022-07-13 11:40:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5379 states, 5378 states have (on average 1.4873558943845295) internal successors, (7999), 5378 states have internal predecessors, (7999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:09,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 7999 transitions. [2022-07-13 11:40:09,566 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 7999 transitions. Word has length 446 [2022-07-13 11:40:09,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:09,566 INFO L495 AbstractCegarLoop]: Abstraction has 5379 states and 7999 transitions. [2022-07-13 11:40:09,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:09,566 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 7999 transitions. [2022-07-13 11:40:09,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-07-13 11:40:09,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:09,571 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:09,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-13 11:40:09,571 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:09,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:09,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1999294986, now seen corresponding path program 1 times [2022-07-13 11:40:09,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:09,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853953422] [2022-07-13 11:40:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:09,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:09,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 1148 proven. 0 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2022-07-13 11:40:09,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:09,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853953422] [2022-07-13 11:40:09,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853953422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:09,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:09,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:09,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398045440] [2022-07-13 11:40:09,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:09,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:09,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:09,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:09,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:09,727 INFO L87 Difference]: Start difference. First operand 5379 states and 7999 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:10,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:10,955 INFO L93 Difference]: Finished difference Result 11059 states and 16413 transitions. [2022-07-13 11:40:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:10,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 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 448 [2022-07-13 11:40:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:10,961 INFO L225 Difference]: With dead ends: 11059 [2022-07-13 11:40:10,961 INFO L226 Difference]: Without dead ends: 5703 [2022-07-13 11:40:10,964 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 11:40:10,964 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 62 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:10,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 577 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 11:40:10,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2022-07-13 11:40:11,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5379. [2022-07-13 11:40:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5379 states, 5378 states have (on average 1.4854964670881368) internal successors, (7989), 5378 states have internal predecessors, (7989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:11,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 7989 transitions. [2022-07-13 11:40:11,057 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 7989 transitions. Word has length 448 [2022-07-13 11:40:11,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:11,057 INFO L495 AbstractCegarLoop]: Abstraction has 5379 states and 7989 transitions. [2022-07-13 11:40:11,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:11,057 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 7989 transitions. [2022-07-13 11:40:11,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2022-07-13 11:40:11,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:11,062 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:11,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-13 11:40:11,062 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:11,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:11,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1847149926, now seen corresponding path program 1 times [2022-07-13 11:40:11,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:11,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816750929] [2022-07-13 11:40:11,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:11,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1870 backedges. 1157 proven. 0 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2022-07-13 11:40:11,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:11,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816750929] [2022-07-13 11:40:11,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816750929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:11,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:11,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:11,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142649629] [2022-07-13 11:40:11,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:11,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:11,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:11,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:11,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:11,224 INFO L87 Difference]: Start difference. First operand 5379 states and 7989 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:12,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:12,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:12,897 INFO L93 Difference]: Finished difference Result 10979 states and 16263 transitions. [2022-07-13 11:40:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:12,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 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 449 [2022-07-13 11:40:12,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:12,902 INFO L225 Difference]: With dead ends: 10979 [2022-07-13 11:40:12,902 INFO L226 Difference]: Without dead ends: 5623 [2022-07-13 11:40:12,906 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 11:40:12,906 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 51 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:12,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 595 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 11:40:12,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5623 states. [2022-07-13 11:40:12,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5623 to 5379. [2022-07-13 11:40:13,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5379 states, 5378 states have (on average 1.4836370397917442) internal successors, (7979), 5378 states have internal predecessors, (7979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:13,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 7979 transitions. [2022-07-13 11:40:13,006 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 7979 transitions. Word has length 449 [2022-07-13 11:40:13,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:13,006 INFO L495 AbstractCegarLoop]: Abstraction has 5379 states and 7979 transitions. [2022-07-13 11:40:13,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:13,007 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 7979 transitions. [2022-07-13 11:40:13,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2022-07-13 11:40:13,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:13,012 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:13,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-13 11:40:13,012 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:13,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:13,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1852972643, now seen corresponding path program 1 times [2022-07-13 11:40:13,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:13,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439906646] [2022-07-13 11:40:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:13,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:13,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 1086 proven. 0 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-07-13 11:40:13,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:13,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439906646] [2022-07-13 11:40:13,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439906646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:13,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:13,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:40:13,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721298305] [2022-07-13 11:40:13,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:13,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:40:13,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:13,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:40:13,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:40:13,175 INFO L87 Difference]: Start difference. First operand 5379 states and 7979 transitions. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:14,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:15,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:15,694 INFO L93 Difference]: Finished difference Result 13569 states and 20138 transitions. [2022-07-13 11:40:15,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 11:40:15,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 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 450 [2022-07-13 11:40:15,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:15,703 INFO L225 Difference]: With dead ends: 13569 [2022-07-13 11:40:15,703 INFO L226 Difference]: Without dead ends: 8213 [2022-07-13 11:40:15,707 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 11:40:15,707 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 129 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:15,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 924 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 11:40:15,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8213 states. [2022-07-13 11:40:15,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8213 to 6308. [2022-07-13 11:40:15,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6308 states, 6307 states have (on average 1.4881877279213571) internal successors, (9386), 6307 states have internal predecessors, (9386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:15,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6308 states to 6308 states and 9386 transitions. [2022-07-13 11:40:15,871 INFO L78 Accepts]: Start accepts. Automaton has 6308 states and 9386 transitions. Word has length 450 [2022-07-13 11:40:15,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:15,871 INFO L495 AbstractCegarLoop]: Abstraction has 6308 states and 9386 transitions. [2022-07-13 11:40:15,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:15,872 INFO L276 IsEmpty]: Start isEmpty. Operand 6308 states and 9386 transitions. [2022-07-13 11:40:15,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-07-13 11:40:15,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:15,879 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:15,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-13 11:40:15,879 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:15,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:15,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1946132669, now seen corresponding path program 1 times [2022-07-13 11:40:15,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:15,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810487192] [2022-07-13 11:40:15,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:15,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1899 backedges. 1140 proven. 78 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2022-07-13 11:40:16,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:16,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810487192] [2022-07-13 11:40:16,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810487192] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:16,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507680163] [2022-07-13 11:40:16,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:16,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:16,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:40:16,052 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:40:16,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 11:40:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:17,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 2129 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:40:17,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:40:17,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1899 backedges. 1356 proven. 0 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2022-07-13 11:40:17,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:40:17,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507680163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:17,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:40:17,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-13 11:40:17,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318390602] [2022-07-13 11:40:17,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:17,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:40:17,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:17,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:40:17,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:40:17,309 INFO L87 Difference]: Start difference. First operand 6308 states and 9386 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:17,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:17,484 INFO L93 Difference]: Finished difference Result 13654 states and 20333 transitions. [2022-07-13 11:40:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:40:17,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 451 [2022-07-13 11:40:17,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:17,491 INFO L225 Difference]: With dead ends: 13654 [2022-07-13 11:40:17,491 INFO L226 Difference]: Without dead ends: 7369 [2022-07-13 11:40:17,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:40:17,495 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 131 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:17,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 375 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:40:17,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7369 states. [2022-07-13 11:40:17,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7369 to 7369. [2022-07-13 11:40:17,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7369 states, 7368 states have (on average 1.488870792616721) internal successors, (10970), 7368 states have internal predecessors, (10970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:17,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7369 states to 7369 states and 10970 transitions. [2022-07-13 11:40:17,647 INFO L78 Accepts]: Start accepts. Automaton has 7369 states and 10970 transitions. Word has length 451 [2022-07-13 11:40:17,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:17,647 INFO L495 AbstractCegarLoop]: Abstraction has 7369 states and 10970 transitions. [2022-07-13 11:40:17,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:17,647 INFO L276 IsEmpty]: Start isEmpty. Operand 7369 states and 10970 transitions. [2022-07-13 11:40:17,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-07-13 11:40:17,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:17,655 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:17,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 11:40:17,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:17,855 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:17,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:17,856 INFO L85 PathProgramCache]: Analyzing trace with hash 306545066, now seen corresponding path program 1 times [2022-07-13 11:40:17,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:17,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822984374] [2022-07-13 11:40:17,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:17,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 1095 proven. 68 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2022-07-13 11:40:17,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:17,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822984374] [2022-07-13 11:40:17,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822984374] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:17,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385316546] [2022-07-13 11:40:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:17,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:17,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:40:17,999 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:40:18,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 11:40:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:19,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 2089 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:40:19,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:40:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 1322 proven. 0 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2022-07-13 11:40:19,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:40:19,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385316546] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:19,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:40:19,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-13 11:40:19,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002588165] [2022-07-13 11:40:19,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:19,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:40:19,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:19,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:40:19,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:40:19,233 INFO L87 Difference]: Start difference. First operand 7369 states and 10970 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:19,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:19,401 INFO L93 Difference]: Finished difference Result 15776 states and 23501 transitions. [2022-07-13 11:40:19,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:40:19,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 455 [2022-07-13 11:40:19,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:19,411 INFO L225 Difference]: With dead ends: 15776 [2022-07-13 11:40:19,411 INFO L226 Difference]: Without dead ends: 8430 [2022-07-13 11:40:19,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:40:19,418 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 151 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:19,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 374 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:40:19,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8430 states. [2022-07-13 11:40:19,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8430 to 8430. [2022-07-13 11:40:19,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8430 states, 8429 states have (on average 1.4896191719065133) internal successors, (12556), 8429 states have internal predecessors, (12556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:19,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8430 states to 8430 states and 12556 transitions. [2022-07-13 11:40:19,585 INFO L78 Accepts]: Start accepts. Automaton has 8430 states and 12556 transitions. Word has length 455 [2022-07-13 11:40:19,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:19,585 INFO L495 AbstractCegarLoop]: Abstraction has 8430 states and 12556 transitions. [2022-07-13 11:40:19,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:19,586 INFO L276 IsEmpty]: Start isEmpty. Operand 8430 states and 12556 transitions. [2022-07-13 11:40:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2022-07-13 11:40:19,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:19,594 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 11:40:19,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 11:40:19,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:19,807 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:19,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:19,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1015527261, now seen corresponding path program 1 times [2022-07-13 11:40:19,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:19,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864611491] [2022-07-13 11:40:19,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:19,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1959 backedges. 1114 proven. 0 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2022-07-13 11:40:19,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:19,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864611491] [2022-07-13 11:40:19,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864611491] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:19,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:19,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:19,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931980194] [2022-07-13 11:40:19,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:19,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:19,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:19,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:19,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:19,970 INFO L87 Difference]: Start difference. First operand 8430 states and 12556 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:21,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:22,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:22,300 INFO L93 Difference]: Finished difference Result 17015 states and 25307 transitions. [2022-07-13 11:40:22,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:22,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 465 [2022-07-13 11:40:22,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:22,309 INFO L225 Difference]: With dead ends: 17015 [2022-07-13 11:40:22,309 INFO L226 Difference]: Without dead ends: 8608 [2022-07-13 11:40:22,314 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 11:40:22,314 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 36 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:22,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 577 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 178 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 11:40:22,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8608 states. [2022-07-13 11:40:22,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8608 to 8430. [2022-07-13 11:40:22,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8430 states, 8429 states have (on average 1.487720963340847) internal successors, (12540), 8429 states have internal predecessors, (12540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8430 states to 8430 states and 12540 transitions. [2022-07-13 11:40:22,514 INFO L78 Accepts]: Start accepts. Automaton has 8430 states and 12540 transitions. Word has length 465 [2022-07-13 11:40:22,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:22,514 INFO L495 AbstractCegarLoop]: Abstraction has 8430 states and 12540 transitions. [2022-07-13 11:40:22,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:22,515 INFO L276 IsEmpty]: Start isEmpty. Operand 8430 states and 12540 transitions. [2022-07-13 11:40:22,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2022-07-13 11:40:22,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:22,523 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 11:40:22,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-07-13 11:40:22,523 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:22,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:22,523 INFO L85 PathProgramCache]: Analyzing trace with hash -599888121, now seen corresponding path program 1 times [2022-07-13 11:40:22,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:22,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043594762] [2022-07-13 11:40:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:22,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:22,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1978 backedges. 1127 proven. 0 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-07-13 11:40:22,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:22,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043594762] [2022-07-13 11:40:22,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043594762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:22,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:22,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:22,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731393367] [2022-07-13 11:40:22,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:22,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:22,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:22,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:22,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:22,672 INFO L87 Difference]: Start difference. First operand 8430 states and 12540 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:24,677 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:24,989 INFO L93 Difference]: Finished difference Result 16951 states and 25193 transitions. [2022-07-13 11:40:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:24,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 467 [2022-07-13 11:40:24,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:24,998 INFO L225 Difference]: With dead ends: 16951 [2022-07-13 11:40:24,998 INFO L226 Difference]: Without dead ends: 8544 [2022-07-13 11:40:25,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:40:25,003 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 30 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:25,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 569 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 170 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 11:40:25,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8544 states. [2022-07-13 11:40:25,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8544 to 8430. [2022-07-13 11:40:25,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8430 states, 8429 states have (on average 1.485822754775181) internal successors, (12524), 8429 states have internal predecessors, (12524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8430 states to 8430 states and 12524 transitions. [2022-07-13 11:40:25,208 INFO L78 Accepts]: Start accepts. Automaton has 8430 states and 12524 transitions. Word has length 467 [2022-07-13 11:40:25,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:25,208 INFO L495 AbstractCegarLoop]: Abstraction has 8430 states and 12524 transitions. [2022-07-13 11:40:25,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:25,208 INFO L276 IsEmpty]: Start isEmpty. Operand 8430 states and 12524 transitions. [2022-07-13 11:40:25,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-07-13 11:40:25,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:25,215 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:25,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-07-13 11:40:25,215 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:25,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:25,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1585745039, now seen corresponding path program 1 times [2022-07-13 11:40:25,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:25,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352422479] [2022-07-13 11:40:25,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:25,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:25,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 1128 proven. 338 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2022-07-13 11:40:25,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:25,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352422479] [2022-07-13 11:40:25,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352422479] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:25,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105659104] [2022-07-13 11:40:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:25,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:25,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:40:25,730 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:40:25,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 11:40:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:26,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 2147 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-13 11:40:26,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:40:26,951 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:26,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:40:26,985 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:40:26,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:26,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:40:27,024 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:40:27,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:27,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-07-13 11:40:27,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-07-13 11:40:27,057 INFO L356 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-07-13 11:40:27,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 33 [2022-07-13 11:40:27,123 INFO L356 Elim1Store]: treesize reduction 66, result has 30.5 percent of original size [2022-07-13 11:40:27,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 45 [2022-07-13 11:40:27,178 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:27,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2022-07-13 11:40:27,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-13 11:40:27,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 1304 proven. 142 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2022-07-13 11:40:27,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:40:27,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2022-07-13 11:40:27,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2022-07-13 11:40:30,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 1329 proven. 0 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2022-07-13 11:40:30,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105659104] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:30,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:40:30,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14, 9] total 22 [2022-07-13 11:40:30,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488184021] [2022-07-13 11:40:30,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:30,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:40:30,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:30,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:40:30,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=407, Unknown=1, NotChecked=0, Total=462 [2022-07-13 11:40:30,958 INFO L87 Difference]: Start difference. First operand 8430 states and 12524 transitions. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:31,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:31,329 INFO L93 Difference]: Finished difference Result 18546 states and 27714 transitions. [2022-07-13 11:40:31,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 11:40:31,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 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 479 [2022-07-13 11:40:31,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:31,339 INFO L225 Difference]: With dead ends: 18546 [2022-07-13 11:40:31,339 INFO L226 Difference]: Without dead ends: 10139 [2022-07-13 11:40:31,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 956 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=60, Invalid=445, Unknown=1, NotChecked=0, Total=506 [2022-07-13 11:40:31,344 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 205 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:31,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 663 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 125 Unchecked, 0.1s Time] [2022-07-13 11:40:31,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10139 states. [2022-07-13 11:40:31,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10139 to 8899. [2022-07-13 11:40:31,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8899 states, 8898 states have (on average 1.4995504607777028) internal successors, (13343), 8898 states have internal predecessors, (13343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:31,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8899 states to 8899 states and 13343 transitions. [2022-07-13 11:40:31,521 INFO L78 Accepts]: Start accepts. Automaton has 8899 states and 13343 transitions. Word has length 479 [2022-07-13 11:40:31,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:31,521 INFO L495 AbstractCegarLoop]: Abstraction has 8899 states and 13343 transitions. [2022-07-13 11:40:31,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:31,521 INFO L276 IsEmpty]: Start isEmpty. Operand 8899 states and 13343 transitions. [2022-07-13 11:40:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-07-13 11:40:31,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:31,529 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:31,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-13 11:40:31,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-07-13 11:40:31,730 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:31,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:31,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1828332653, now seen corresponding path program 1 times [2022-07-13 11:40:31,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:31,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195467313] [2022-07-13 11:40:31,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:31,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2136 trivial. 0 not checked. [2022-07-13 11:40:32,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:32,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195467313] [2022-07-13 11:40:32,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195467313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:32,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:32,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:40:32,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131582198] [2022-07-13 11:40:32,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:32,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:40:32,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:32,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:40:32,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:40:32,216 INFO L87 Difference]: Start difference. First operand 8899 states and 13343 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:33,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:34,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:35,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:35,120 INFO L93 Difference]: Finished difference Result 17795 states and 26682 transitions. [2022-07-13 11:40:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 11:40:35,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 479 [2022-07-13 11:40:35,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:35,130 INFO L225 Difference]: With dead ends: 17795 [2022-07-13 11:40:35,130 INFO L226 Difference]: Without dead ends: 8899 [2022-07-13 11:40:35,136 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 11:40:35,136 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 7 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:35,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 679 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 11:40:35,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8899 states. [2022-07-13 11:40:35,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8899 to 8899. [2022-07-13 11:40:35,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8899 states, 8898 states have (on average 1.4994380759721286) internal successors, (13342), 8898 states have internal predecessors, (13342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8899 states to 8899 states and 13342 transitions. [2022-07-13 11:40:35,355 INFO L78 Accepts]: Start accepts. Automaton has 8899 states and 13342 transitions. Word has length 479 [2022-07-13 11:40:35,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:35,355 INFO L495 AbstractCegarLoop]: Abstraction has 8899 states and 13342 transitions. [2022-07-13 11:40:35,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:35,355 INFO L276 IsEmpty]: Start isEmpty. Operand 8899 states and 13342 transitions. [2022-07-13 11:40:35,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-07-13 11:40:35,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:35,364 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:35,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-07-13 11:40:35,364 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:35,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:35,365 INFO L85 PathProgramCache]: Analyzing trace with hash 656047471, now seen corresponding path program 1 times [2022-07-13 11:40:35,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:35,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773447731] [2022-07-13 11:40:35,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:35,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 1082 proven. 225 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2022-07-13 11:40:36,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:36,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773447731] [2022-07-13 11:40:36,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773447731] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:36,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416315600] [2022-07-13 11:40:36,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:36,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:36,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:40:36,092 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:40:36,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 11:40:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:37,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 2176 conjuncts, 153 conjunts are in the unsatisfiable core [2022-07-13 11:40:37,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:40:37,445 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:37,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:40:37,517 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-07-13 11:40:37,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 10 [2022-07-13 11:40:37,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:40:37,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:40:37,570 INFO L356 Elim1Store]: treesize reduction 31, result has 44.6 percent of original size [2022-07-13 11:40:37,571 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 82 [2022-07-13 11:40:37,589 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-13 11:40:37,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 64 [2022-07-13 11:40:37,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:37,622 INFO L356 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-07-13 11:40:37,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 52 [2022-07-13 11:40:37,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:37,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 114 [2022-07-13 11:40:37,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:37,773 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 114 [2022-07-13 11:40:37,813 INFO L356 Elim1Store]: treesize reduction 246, result has 22.4 percent of original size [2022-07-13 11:40:37,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 127 treesize of output 145 [2022-07-13 11:40:38,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:38,722 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 155 [2022-07-13 11:40:38,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:38,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:38,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:38,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:38,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:38,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:38,755 INFO L356 Elim1Store]: treesize reduction 156, result has 23.5 percent of original size [2022-07-13 11:40:38,756 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 176 treesize of output 174 [2022-07-13 11:40:38,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:38,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 171 [2022-07-13 11:40:40,464 INFO L356 Elim1Store]: treesize reduction 106, result has 42.7 percent of original size [2022-07-13 11:40:40,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 185 treesize of output 173 [2022-07-13 11:40:40,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:40,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 87 [2022-07-13 11:40:40,726 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:40,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 87 [2022-07-13 11:40:40,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:40,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 87 [2022-07-13 11:40:40,758 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:40,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 87 [2022-07-13 11:40:41,236 INFO L356 Elim1Store]: treesize reduction 72, result has 41.5 percent of original size [2022-07-13 11:40:41,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 156 [2022-07-13 11:40:41,268 INFO L356 Elim1Store]: treesize reduction 52, result has 42.9 percent of original size [2022-07-13 11:40:41,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 138 treesize of output 133 [2022-07-13 11:40:41,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:41,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:41,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:41,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:41,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:41,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:41,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 88 [2022-07-13 11:40:41,585 INFO L356 Elim1Store]: treesize reduction 154, result has 15.4 percent of original size [2022-07-13 11:40:41,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 100 treesize of output 106 [2022-07-13 11:40:42,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:42,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:42,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:42,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 79 [2022-07-13 11:40:42,182 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-07-13 11:40:42,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 97 [2022-07-13 11:40:42,247 INFO L356 Elim1Store]: treesize reduction 72, result has 41.5 percent of original size [2022-07-13 11:40:42,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 175 treesize of output 176 [2022-07-13 11:40:42,279 INFO L356 Elim1Store]: treesize reduction 52, result has 42.9 percent of original size [2022-07-13 11:40:42,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 158 treesize of output 141 [2022-07-13 11:40:42,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 11:40:42,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:42,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:42,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:42,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 138 [2022-07-13 11:40:42,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:42,479 INFO L356 Elim1Store]: treesize reduction 77, result has 35.8 percent of original size [2022-07-13 11:40:42,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 148 treesize of output 172 [2022-07-13 11:40:42,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:42,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:42,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:42,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 139 [2022-07-13 11:40:43,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:43,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:43,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:43,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 179 [2022-07-13 11:40:43,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:43,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:43,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:43,858 INFO L356 Elim1Store]: treesize reduction 127, result has 14.2 percent of original size [2022-07-13 11:40:43,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 197 treesize of output 184 [2022-07-13 11:40:43,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:43,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:43,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:43,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 157 [2022-07-13 11:40:45,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,569 INFO L356 Elim1Store]: treesize reduction 161, result has 21.1 percent of original size [2022-07-13 11:40:45,569 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 77 treesize of output 95 [2022-07-13 11:40:45,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2022-07-13 11:40:45,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2022-07-13 11:40:45,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,695 INFO L356 Elim1Store]: treesize reduction 131, result has 25.6 percent of original size [2022-07-13 11:40:45,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 106 [2022-07-13 11:40:45,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 79 [2022-07-13 11:40:45,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:45,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 81 [2022-07-13 11:40:46,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:46,443 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 71 [2022-07-13 11:40:46,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:46,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 49 [2022-07-13 11:40:46,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:46,470 INFO L356 Elim1Store]: treesize reduction 55, result has 27.6 percent of original size [2022-07-13 11:40:46,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 58 [2022-07-13 11:40:46,546 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-13 11:40:46,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 31 [2022-07-13 11:40:46,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:40:46,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:46,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-13 11:40:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 1202 proven. 876 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-07-13 11:40:46,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:40:46,698 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_23814 (Array Int Int))) (not (= 8640 (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 84)) v_ArrVal_23814) |c_ULTIMATE.start_ssl3_accept_~s#1.base|) (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 52))))) (= |c_ULTIMATE.start_ssl3_accept_#t~mem145#1| 0)) is different from false [2022-07-13 11:40:46,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2022-07-13 11:40:46,953 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_23814 (Array Int Int)) (v_arrayElimCell_112 Int)) (not (= (let ((.cse0 (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 52))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse0 8448)) v_arrayElimCell_112 v_ArrVal_23814) |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse0)) 8640))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) (+ 92 |c_ULTIMATE.start_ssl3_accept_~s#1.offset|)) 0)) is different from false [2022-07-13 11:40:46,966 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_23808 Int) (v_ArrVal_23809 Int) (v_ArrVal_23814 (Array Int Int)) (v_arrayElimCell_112 Int)) (not (= 8640 (let ((.cse0 (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 52))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse0 v_ArrVal_23808) (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 64) v_ArrVal_23809) .cse0 8448)) v_arrayElimCell_112 v_ArrVal_23814) |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse0))))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) (+ 92 |c_ULTIMATE.start_ssl3_accept_~s#1.offset|)) 0)) is different from false [2022-07-13 11:40:46,995 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_23808 Int) (v_ArrVal_23809 Int) (v_ArrVal_23814 (Array Int Int)) (v_arrayElimCell_112 Int) (v_ArrVal_23805 Int)) (let ((.cse1 (let ((.cse4 (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 176))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse4))) (store |c_#memory_int| .cse3 (store (select |c_#memory_int| .cse3) (+ (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse4) 172) v_ArrVal_23805)))))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_ssl3_accept_~s#1.base|))) (or (= (select .cse0 (+ 92 |c_ULTIMATE.start_ssl3_accept_~s#1.offset|)) 0) (not (= (let ((.cse2 (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 52))) (select (select (store (store .cse1 |c_ULTIMATE.start_ssl3_accept_~s#1.base| (store (store (store .cse0 .cse2 v_ArrVal_23808) (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 64) v_ArrVal_23809) .cse2 8448)) v_arrayElimCell_112 v_ArrVal_23814) |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse2)) 8640)))))) is different from false [2022-07-13 11:40:47,274 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_23808 Int) (v_ArrVal_23809 Int) (v_ArrVal_23814 (Array Int Int)) (v_arrayElimCell_112 Int) (v_ArrVal_23802 Int) (v_ArrVal_23805 Int)) (let ((.cse3 (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 64))) (let ((.cse1 (let ((.cse6 (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 176))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse3 v_ArrVal_23802))) (.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse6))) (store .cse4 .cse5 (store (select .cse4 .cse5) (+ (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse6) 172) v_ArrVal_23805)))))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_ssl3_accept_~s#1.base|))) (or (= (select .cse0 (+ 92 |c_ULTIMATE.start_ssl3_accept_~s#1.offset|)) 0) (not (= (let ((.cse2 (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 52))) (select (select (store (store .cse1 |c_ULTIMATE.start_ssl3_accept_~s#1.base| (store (store (store .cse0 .cse2 v_ArrVal_23808) .cse3 v_ArrVal_23809) .cse2 8448)) v_arrayElimCell_112 v_ArrVal_23814) |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse2)) 8640))))))) is different from false [2022-07-13 11:40:48,942 INFO L356 Elim1Store]: treesize reduction 5781, result has 4.7 percent of original size [2022-07-13 11:40:48,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 9571 treesize of output 9132 [2022-07-13 11:40:49,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:40:49,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:40:49,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:40:49,051 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:40:49,071 INFO L356 Elim1Store]: treesize reduction 181, result has 30.9 percent of original size [2022-07-13 11:40:49,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 579 treesize of output 538 [2022-07-13 11:40:49,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4