./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 eb692b52 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-?-eb692b5 [2022-07-19 11:02:47,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 11:02:47,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 11:02:47,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 11:02:47,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 11:02:47,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 11:02:47,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 11:02:47,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 11:02:47,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 11:02:47,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 11:02:47,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 11:02:47,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 11:02:47,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 11:02:47,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 11:02:47,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 11:02:47,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 11:02:47,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 11:02:47,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 11:02:47,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 11:02:47,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 11:02:47,128 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 11:02:47,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 11:02:47,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 11:02:47,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 11:02:47,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 11:02:47,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 11:02:47,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 11:02:47,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 11:02:47,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 11:02:47,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 11:02:47,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 11:02:47,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 11:02:47,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 11:02:47,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 11:02:47,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 11:02:47,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 11:02:47,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 11:02:47,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 11:02:47,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 11:02:47,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 11:02:47,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 11:02:47,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 11:02:47,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 11:02:47,167 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 11:02:47,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 11:02:47,169 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 11:02:47,169 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 11:02:47,169 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 11:02:47,169 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 11:02:47,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 11:02:47,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 11:02:47,170 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 11:02:47,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 11:02:47,171 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 11:02:47,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 11:02:47,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 11:02:47,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 11:02:47,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 11:02:47,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 11:02:47,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 11:02:47,172 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 11:02:47,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 11:02:47,173 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 11:02:47,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 11:02:47,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 11:02:47,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 11:02:47,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 11:02:47,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:02:47,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 11:02:47,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 11:02:47,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 11:02:47,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 11:02:47,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 11:02:47,175 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 11:02:47,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 11:02:47,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 11:02:47,176 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa372dfad40872d8fec1a0f5d039a19d9bc91cfd74858ce24ec80eeafb27f017 [2022-07-19 11:02:47,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 11:02:47,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 11:02:47,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 11:02:47,426 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 11:02:47,428 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 11:02:47,428 INFO L432 ainManager$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 [2022-07-19 11:02:47,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e5fe1ef8/c3dfda07d9f24d8d92718541c965267c/FLAG75de35698 [2022-07-19 11:02:47,936 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 11:02:47,936 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c [2022-07-19 11:02:47,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e5fe1ef8/c3dfda07d9f24d8d92718541c965267c/FLAG75de35698 [2022-07-19 11:02:48,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e5fe1ef8/c3dfda07d9f24d8d92718541c965267c [2022-07-19 11:02:48,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 11:02:48,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 11:02:48,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 11:02:48,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 11:02:48,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 11:02:48,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:02:48" (1/1) ... [2022-07-19 11:02:48,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3985a458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:48, skipping insertion in model container [2022-07-19 11:02:48,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:02:48" (1/1) ... [2022-07-19 11:02:48,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 11:02:48,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 11:02:48,623 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] [2022-07-19 11:02:48,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:02:48,647 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 11:02:48,765 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] [2022-07-19 11:02:48,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:02:48,778 INFO L208 MainTranslator]: Completed translation [2022-07-19 11:02:48,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:48 WrapperNode [2022-07-19 11:02:48,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 11:02:48,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 11:02:48,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 11:02:48,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 11:02:48,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:48" (1/1) ... [2022-07-19 11:02:48,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:48" (1/1) ... [2022-07-19 11:02:48,857 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 794 [2022-07-19 11:02:48,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 11:02:48,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 11:02:48,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 11:02:48,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 11:02:48,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:48" (1/1) ... [2022-07-19 11:02:48,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:48" (1/1) ... [2022-07-19 11:02:48,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:48" (1/1) ... [2022-07-19 11:02:48,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:48" (1/1) ... [2022-07-19 11:02:48,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:48" (1/1) ... [2022-07-19 11:02:48,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:48" (1/1) ... [2022-07-19 11:02:48,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:48" (1/1) ... [2022-07-19 11:02:48,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 11:02:48,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 11:02:48,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 11:02:48,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 11:02:48,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:48" (1/1) ... [2022-07-19 11:02:48,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:02:49,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:02:49,035 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) [2022-07-19 11:02:49,041 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 [2022-07-19 11:02:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 11:02:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 11:02:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 11:02:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 11:02:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 11:02:49,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 11:02:49,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 11:02:49,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 11:02:49,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 11:02:49,154 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 11:02:49,155 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 11:02:49,171 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-19 11:02:50,014 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-19 11:02:50,014 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-19 11:02:50,015 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 11:02:50,020 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 11:02:50,020 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 11:02:50,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:02:50 BoogieIcfgContainer [2022-07-19 11:02:50,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 11:02:50,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 11:02:50,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 11:02:50,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 11:02:50,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:02:48" (1/3) ... [2022-07-19 11:02:50,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b131a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:02:50, skipping insertion in model container [2022-07-19 11:02:50,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:48" (2/3) ... [2022-07-19 11:02:50,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b131a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:02:50, skipping insertion in model container [2022-07-19 11:02:50,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:02:50" (3/3) ... [2022-07-19 11:02:50,027 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.08.i.cil-1.c [2022-07-19 11:02:50,038 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 11:02:50,039 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 11:02:50,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 11:02:50,075 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@6ed9e1c7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@72af5fc2 [2022-07-19 11:02:50,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 11:02:50,079 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) [2022-07-19 11:02:50,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 11:02:50,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:02:50,096 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] [2022-07-19 11:02:50,098 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:02:50,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:02:50,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1630857964, now seen corresponding path program 1 times [2022-07-19 11:02:50,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:02:50,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297165712] [2022-07-19 11:02:50,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:02:50,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:02:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:02:50,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:02:50,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:02:50,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297165712] [2022-07-19 11:02:50,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297165712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:02:50,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:02:50,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:02:50,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715472530] [2022-07-19 11:02:50,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:02:50,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:02:50,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:02:50,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:02:50,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:02:50,684 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) [2022-07-19 11:02:51,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:02:51,457 INFO L93 Difference]: Finished difference Result 423 states and 720 transitions. [2022-07-19 11:02:51,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:02:51,459 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 [2022-07-19 11:02:51,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:02:51,467 INFO L225 Difference]: With dead ends: 423 [2022-07-19 11:02:51,467 INFO L226 Difference]: Without dead ends: 257 [2022-07-19 11:02:51,469 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 [2022-07-19 11:02:51,474 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 156 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:02:51,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 447 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:02:51,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-07-19 11:02:51,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 178. [2022-07-19 11:02:51,504 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) [2022-07-19 11:02:51,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 285 transitions. [2022-07-19 11:02:51,506 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 285 transitions. Word has length 45 [2022-07-19 11:02:51,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:02:51,507 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 285 transitions. [2022-07-19 11:02:51,507 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) [2022-07-19 11:02:51,507 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 285 transitions. [2022-07-19 11:02:51,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-19 11:02:51,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:02:51,508 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] [2022-07-19 11:02:51,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 11:02:51,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:02:51,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:02:51,510 INFO L85 PathProgramCache]: Analyzing trace with hash -996579501, now seen corresponding path program 1 times [2022-07-19 11:02:51,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:02:51,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794943185] [2022-07-19 11:02:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:02:51,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:02:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:02:51,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:02:51,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:02:51,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794943185] [2022-07-19 11:02:51,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794943185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:02:51,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:02:51,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:02:51,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084468303] [2022-07-19 11:02:51,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:02:51,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:02:51,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:02:51,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:02:51,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:02:51,628 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) [2022-07-19 11:02:52,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:02:52,111 INFO L93 Difference]: Finished difference Result 464 states and 740 transitions. [2022-07-19 11:02:52,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:02:52,112 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 [2022-07-19 11:02:52,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:02:52,115 INFO L225 Difference]: With dead ends: 464 [2022-07-19 11:02:52,115 INFO L226 Difference]: Without dead ends: 296 [2022-07-19 11:02:52,116 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 [2022-07-19 11:02:52,117 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 121 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2022-07-19 11:02:52,117 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] [2022-07-19 11:02:52,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-07-19 11:02:52,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 218. [2022-07-19 11:02:52,148 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) [2022-07-19 11:02:52,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 359 transitions. [2022-07-19 11:02:52,148 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 359 transitions. Word has length 46 [2022-07-19 11:02:52,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:02:52,149 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 359 transitions. [2022-07-19 11:02:52,149 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) [2022-07-19 11:02:52,149 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 359 transitions. [2022-07-19 11:02:52,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 11:02:52,151 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:02:52,151 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] [2022-07-19 11:02:52,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 11:02:52,151 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:02:52,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:02:52,152 INFO L85 PathProgramCache]: Analyzing trace with hash 330663453, now seen corresponding path program 1 times [2022-07-19 11:02:52,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:02:52,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807743184] [2022-07-19 11:02:52,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:02:52,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:02:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:02:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:02:52,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:02:52,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807743184] [2022-07-19 11:02:52,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807743184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:02:52,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:02:52,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:02:52,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351733484] [2022-07-19 11:02:52,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:02:52,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:02:52,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:02:52,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:02:52,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:02:52,294 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) [2022-07-19 11:02:53,591 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 [] [2022-07-19 11:02:53,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:02:53,906 INFO L93 Difference]: Finished difference Result 580 states and 955 transitions. [2022-07-19 11:02:53,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:02:53,906 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 [2022-07-19 11:02:53,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:02:53,908 INFO L225 Difference]: With dead ends: 580 [2022-07-19 11:02:53,908 INFO L226 Difference]: Without dead ends: 372 [2022-07-19 11:02:53,909 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 [2022-07-19 11:02:53,910 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, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:02:53,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 374 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 11:02:53,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-07-19 11:02:53,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 282. [2022-07-19 11:02:53,930 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) [2022-07-19 11:02:53,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 475 transitions. [2022-07-19 11:02:53,935 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 475 transitions. Word has length 74 [2022-07-19 11:02:53,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:02:53,936 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 475 transitions. [2022-07-19 11:02:53,936 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) [2022-07-19 11:02:53,936 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 475 transitions. [2022-07-19 11:02:53,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 11:02:53,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:02:53,939 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] [2022-07-19 11:02:53,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 11:02:53,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:02:53,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:02:53,944 INFO L85 PathProgramCache]: Analyzing trace with hash 579944780, now seen corresponding path program 1 times [2022-07-19 11:02:53,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:02:53,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442257086] [2022-07-19 11:02:53,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:02:53,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:02:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:02:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 11:02:54,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:02:54,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442257086] [2022-07-19 11:02:54,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442257086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:02:54,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:02:54,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:02:54,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948979350] [2022-07-19 11:02:54,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:02:54,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:02:54,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:02:54,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:02:54,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:02:54,072 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) [2022-07-19 11:02:55,543 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:02:55,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:02:55,783 INFO L93 Difference]: Finished difference Result 582 states and 977 transitions. [2022-07-19 11:02:55,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:02:55,783 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 [2022-07-19 11:02:55,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:02:55,784 INFO L225 Difference]: With dead ends: 582 [2022-07-19 11:02:55,785 INFO L226 Difference]: Without dead ends: 310 [2022-07-19 11:02:55,785 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 [2022-07-19 11:02:55,786 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, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:02:55,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 475 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 11:02:55,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-07-19 11:02:55,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 293. [2022-07-19 11:02:55,793 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) [2022-07-19 11:02:55,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 494 transitions. [2022-07-19 11:02:55,794 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 494 transitions. Word has length 79 [2022-07-19 11:02:55,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:02:55,794 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 494 transitions. [2022-07-19 11:02:55,794 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) [2022-07-19 11:02:55,794 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 494 transitions. [2022-07-19 11:02:55,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 11:02:55,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:02:55,796 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] [2022-07-19 11:02:55,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 11:02:55,796 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:02:55,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:02:55,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1317916975, now seen corresponding path program 1 times [2022-07-19 11:02:55,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:02:55,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237386477] [2022-07-19 11:02:55,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:02:55,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:02:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:02:55,897 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-19 11:02:55,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:02:55,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237386477] [2022-07-19 11:02:55,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237386477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:02:55,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:02:55,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:02:55,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987220248] [2022-07-19 11:02:55,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:02:55,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:02:55,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:02:55,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:02:55,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:02:55,901 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) [2022-07-19 11:02:57,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:02:58,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:02:58,088 INFO L93 Difference]: Finished difference Result 582 states and 976 transitions. [2022-07-19 11:02:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:02:58,089 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 [2022-07-19 11:02:58,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:02:58,090 INFO L225 Difference]: With dead ends: 582 [2022-07-19 11:02:58,090 INFO L226 Difference]: Without dead ends: 310 [2022-07-19 11:02:58,091 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 [2022-07-19 11:02:58,091 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 24 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:02:58,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 477 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 11:02:58,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-07-19 11:02:58,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 293. [2022-07-19 11:02:58,101 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) [2022-07-19 11:02:58,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 493 transitions. [2022-07-19 11:02:58,102 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 493 transitions. Word has length 87 [2022-07-19 11:02:58,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:02:58,105 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 493 transitions. [2022-07-19 11:02:58,105 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) [2022-07-19 11:02:58,105 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 493 transitions. [2022-07-19 11:02:58,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-19 11:02:58,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:02:58,107 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] [2022-07-19 11:02:58,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 11:02:58,107 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:02:58,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:02:58,108 INFO L85 PathProgramCache]: Analyzing trace with hash 389352563, now seen corresponding path program 1 times [2022-07-19 11:02:58,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:02:58,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563411665] [2022-07-19 11:02:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:02:58,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:02:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:02:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-19 11:02:58,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:02:58,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563411665] [2022-07-19 11:02:58,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563411665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:02:58,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:02:58,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:02:58,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654333858] [2022-07-19 11:02:58,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:02:58,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:02:58,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:02:58,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:02:58,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:02:58,256 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) [2022-07-19 11:02:58,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:02:58,845 INFO L93 Difference]: Finished difference Result 643 states and 1063 transitions. [2022-07-19 11:02:58,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:02:58,845 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 [2022-07-19 11:02:58,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:02:58,847 INFO L225 Difference]: With dead ends: 643 [2022-07-19 11:02:58,847 INFO L226 Difference]: Without dead ends: 371 [2022-07-19 11:02:58,847 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 [2022-07-19 11:02:58,848 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 143 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:02:58,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 336 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:02:58,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-07-19 11:02:58,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 293. [2022-07-19 11:02:58,858 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) [2022-07-19 11:02:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 488 transitions. [2022-07-19 11:02:58,859 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 488 transitions. Word has length 88 [2022-07-19 11:02:58,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:02:58,860 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 488 transitions. [2022-07-19 11:02:58,860 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) [2022-07-19 11:02:58,860 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 488 transitions. [2022-07-19 11:02:58,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 11:02:58,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:02:58,861 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] [2022-07-19 11:02:58,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 11:02:58,862 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:02:58,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:02:58,871 INFO L85 PathProgramCache]: Analyzing trace with hash 262089547, now seen corresponding path program 1 times [2022-07-19 11:02:58,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:02:58,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971494318] [2022-07-19 11:02:58,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:02:58,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:02:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:02:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 11:02:59,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:02:59,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971494318] [2022-07-19 11:02:59,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971494318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:02:59,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:02:59,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:02:59,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392549341] [2022-07-19 11:02:59,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:02:59,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:02:59,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:02:59,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:02:59,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:02:59,020 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) [2022-07-19 11:03:00,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:00,094 INFO L93 Difference]: Finished difference Result 642 states and 1053 transitions. [2022-07-19 11:03:00,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:00,095 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 [2022-07-19 11:03:00,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:00,096 INFO L225 Difference]: With dead ends: 642 [2022-07-19 11:03:00,096 INFO L226 Difference]: Without dead ends: 370 [2022-07-19 11:03:00,097 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 [2022-07-19 11:03:00,097 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, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:00,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 338 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 11:03:00,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-07-19 11:03:00,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 293. [2022-07-19 11:03:00,102 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) [2022-07-19 11:03:00,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 483 transitions. [2022-07-19 11:03:00,103 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 483 transitions. Word has length 93 [2022-07-19 11:03:00,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:00,103 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 483 transitions. [2022-07-19 11:03:00,104 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) [2022-07-19 11:03:00,104 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 483 transitions. [2022-07-19 11:03:00,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 11:03:00,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:00,105 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] [2022-07-19 11:03:00,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 11:03:00,105 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:00,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:00,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1550770911, now seen corresponding path program 1 times [2022-07-19 11:03:00,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:00,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155169002] [2022-07-19 11:03:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:00,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 11:03:00,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:00,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155169002] [2022-07-19 11:03:00,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155169002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:00,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:00,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:00,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87581186] [2022-07-19 11:03:00,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:00,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:00,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:00,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:00,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:00,171 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) [2022-07-19 11:03:01,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:01,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:01,380 INFO L93 Difference]: Finished difference Result 579 states and 954 transitions. [2022-07-19 11:03:01,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:01,381 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 [2022-07-19 11:03:01,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:01,382 INFO L225 Difference]: With dead ends: 579 [2022-07-19 11:03:01,382 INFO L226 Difference]: Without dead ends: 307 [2022-07-19 11:03:01,382 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 [2022-07-19 11:03:01,390 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 25 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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 [2022-07-19 11:03:01,390 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] [2022-07-19 11:03:01,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-07-19 11:03:01,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 293. [2022-07-19 11:03:01,397 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) [2022-07-19 11:03:01,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 482 transitions. [2022-07-19 11:03:01,398 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 482 transitions. Word has length 93 [2022-07-19 11:03:01,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:01,399 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 482 transitions. [2022-07-19 11:03:01,399 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) [2022-07-19 11:03:01,399 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 482 transitions. [2022-07-19 11:03:01,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 11:03:01,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:01,399 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] [2022-07-19 11:03:01,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 11:03:01,400 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:01,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:01,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2009016310, now seen corresponding path program 1 times [2022-07-19 11:03:01,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:01,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605570788] [2022-07-19 11:03:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:01,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:01,519 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 11:03:01,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:01,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605570788] [2022-07-19 11:03:01,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605570788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:01,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:01,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:01,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071581690] [2022-07-19 11:03:01,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:01,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:01,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:01,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:01,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:01,522 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) [2022-07-19 11:03:02,895 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 [] [2022-07-19 11:03:03,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:03,194 INFO L93 Difference]: Finished difference Result 641 states and 1042 transitions. [2022-07-19 11:03:03,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:03,194 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 [2022-07-19 11:03:03,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:03,195 INFO L225 Difference]: With dead ends: 641 [2022-07-19 11:03:03,195 INFO L226 Difference]: Without dead ends: 369 [2022-07-19 11:03:03,196 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 [2022-07-19 11:03:03,196 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 140 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:03,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 340 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 11:03:03,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-07-19 11:03:03,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 293. [2022-07-19 11:03:03,201 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) [2022-07-19 11:03:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 477 transitions. [2022-07-19 11:03:03,202 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 477 transitions. Word has length 93 [2022-07-19 11:03:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:03,202 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 477 transitions. [2022-07-19 11:03:03,202 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) [2022-07-19 11:03:03,202 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 477 transitions. [2022-07-19 11:03:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-19 11:03:03,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:03,203 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] [2022-07-19 11:03:03,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 11:03:03,204 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:03,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:03,204 INFO L85 PathProgramCache]: Analyzing trace with hash -301391389, now seen corresponding path program 1 times [2022-07-19 11:03:03,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:03,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653061161] [2022-07-19 11:03:03,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:03,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:03,331 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 11:03:03,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:03,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653061161] [2022-07-19 11:03:03,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653061161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:03,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:03,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:03,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445072653] [2022-07-19 11:03:03,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:03,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:03,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:03,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:03,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:03,333 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) [2022-07-19 11:03:05,339 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 [] [2022-07-19 11:03:05,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:05,583 INFO L93 Difference]: Finished difference Result 578 states and 943 transitions. [2022-07-19 11:03:05,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:05,584 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 [2022-07-19 11:03:05,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:05,585 INFO L225 Difference]: With dead ends: 578 [2022-07-19 11:03:05,585 INFO L226 Difference]: Without dead ends: 306 [2022-07-19 11:03:05,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:05,586 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 22 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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 [2022-07-19 11:03:05,586 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] [2022-07-19 11:03:05,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-07-19 11:03:05,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 293. [2022-07-19 11:03:05,590 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) [2022-07-19 11:03:05,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 476 transitions. [2022-07-19 11:03:05,591 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 476 transitions. Word has length 94 [2022-07-19 11:03:05,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:05,591 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 476 transitions. [2022-07-19 11:03:05,592 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) [2022-07-19 11:03:05,592 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 476 transitions. [2022-07-19 11:03:05,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 11:03:05,592 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:05,592 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] [2022-07-19 11:03:05,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 11:03:05,593 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:05,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:05,593 INFO L85 PathProgramCache]: Analyzing trace with hash -233475740, now seen corresponding path program 1 times [2022-07-19 11:03:05,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:05,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346461435] [2022-07-19 11:03:05,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:05,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 11:03:05,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:05,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346461435] [2022-07-19 11:03:05,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346461435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:05,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:05,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:05,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606099453] [2022-07-19 11:03:05,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:05,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:05,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:05,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:05,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:05,689 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) [2022-07-19 11:03:06,960 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 [] [2022-07-19 11:03:07,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:07,119 INFO L93 Difference]: Finished difference Result 578 states and 942 transitions. [2022-07-19 11:03:07,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:07,119 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 [2022-07-19 11:03:07,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:07,121 INFO L225 Difference]: With dead ends: 578 [2022-07-19 11:03:07,121 INFO L226 Difference]: Without dead ends: 306 [2022-07-19 11:03:07,121 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 [2022-07-19 11:03:07,122 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 20 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:07,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 485 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 11:03:07,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-07-19 11:03:07,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 293. [2022-07-19 11:03:07,126 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) [2022-07-19 11:03:07,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 475 transitions. [2022-07-19 11:03:07,127 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 475 transitions. Word has length 95 [2022-07-19 11:03:07,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:07,128 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 475 transitions. [2022-07-19 11:03:07,128 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) [2022-07-19 11:03:07,128 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 475 transitions. [2022-07-19 11:03:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-19 11:03:07,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:07,133 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] [2022-07-19 11:03:07,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 11:03:07,133 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:07,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:07,133 INFO L85 PathProgramCache]: Analyzing trace with hash -772685816, now seen corresponding path program 1 times [2022-07-19 11:03:07,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:07,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642814252] [2022-07-19 11:03:07,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:07,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 11:03:07,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:07,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642814252] [2022-07-19 11:03:07,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642814252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:07,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:07,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:07,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22505128] [2022-07-19 11:03:07,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:07,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:07,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:07,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:07,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:07,226 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) [2022-07-19 11:03:07,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:07,740 INFO L93 Difference]: Finished difference Result 641 states and 1031 transitions. [2022-07-19 11:03:07,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:07,741 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 [2022-07-19 11:03:07,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:07,742 INFO L225 Difference]: With dead ends: 641 [2022-07-19 11:03:07,742 INFO L226 Difference]: Without dead ends: 369 [2022-07-19 11:03:07,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:07,742 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:07,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 340 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:03:07,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-07-19 11:03:07,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 293. [2022-07-19 11:03:07,747 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) [2022-07-19 11:03:07,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 470 transitions. [2022-07-19 11:03:07,748 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 470 transitions. Word has length 96 [2022-07-19 11:03:07,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:07,748 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 470 transitions. [2022-07-19 11:03:07,748 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) [2022-07-19 11:03:07,748 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 470 transitions. [2022-07-19 11:03:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-19 11:03:07,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:07,749 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] [2022-07-19 11:03:07,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 11:03:07,749 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:07,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:07,749 INFO L85 PathProgramCache]: Analyzing trace with hash 895742832, now seen corresponding path program 1 times [2022-07-19 11:03:07,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:07,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119709040] [2022-07-19 11:03:07,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:07,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:07,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:07,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119709040] [2022-07-19 11:03:07,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119709040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:07,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:07,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:07,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748657975] [2022-07-19 11:03:07,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:07,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:07,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:07,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:07,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:07,825 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) [2022-07-19 11:03:08,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:09,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:09,274 INFO L93 Difference]: Finished difference Result 681 states and 1090 transitions. [2022-07-19 11:03:09,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:09,275 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 [2022-07-19 11:03:09,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:09,276 INFO L225 Difference]: With dead ends: 681 [2022-07-19 11:03:09,276 INFO L226 Difference]: Without dead ends: 409 [2022-07-19 11:03:09,276 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 [2022-07-19 11:03:09,277 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 120 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:09,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 340 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 11:03:09,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-07-19 11:03:09,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 330. [2022-07-19 11:03:09,284 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) [2022-07-19 11:03:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 532 transitions. [2022-07-19 11:03:09,285 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 532 transitions. Word has length 96 [2022-07-19 11:03:09,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:09,285 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 532 transitions. [2022-07-19 11:03:09,286 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) [2022-07-19 11:03:09,286 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 532 transitions. [2022-07-19 11:03:09,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 11:03:09,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:09,287 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] [2022-07-19 11:03:09,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 11:03:09,287 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:09,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:09,287 INFO L85 PathProgramCache]: Analyzing trace with hash -428913977, now seen corresponding path program 1 times [2022-07-19 11:03:09,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:09,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627429493] [2022-07-19 11:03:09,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:09,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:09,380 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:09,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:09,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627429493] [2022-07-19 11:03:09,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627429493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:09,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:09,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:09,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163069556] [2022-07-19 11:03:09,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:09,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:09,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:09,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:09,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:09,382 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) [2022-07-19 11:03:10,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:10,218 INFO L93 Difference]: Finished difference Result 715 states and 1146 transitions. [2022-07-19 11:03:10,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:10,219 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 [2022-07-19 11:03:10,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:10,220 INFO L225 Difference]: With dead ends: 715 [2022-07-19 11:03:10,220 INFO L226 Difference]: Without dead ends: 406 [2022-07-19 11:03:10,220 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 [2022-07-19 11:03:10,221 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 119 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:10,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 364 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:03:10,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-07-19 11:03:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 330. [2022-07-19 11:03:10,226 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) [2022-07-19 11:03:10,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 530 transitions. [2022-07-19 11:03:10,226 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 530 transitions. Word has length 97 [2022-07-19 11:03:10,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:10,226 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 530 transitions. [2022-07-19 11:03:10,226 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) [2022-07-19 11:03:10,227 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 530 transitions. [2022-07-19 11:03:10,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-19 11:03:10,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:10,228 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] [2022-07-19 11:03:10,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 11:03:10,228 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:10,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:10,229 INFO L85 PathProgramCache]: Analyzing trace with hash -567402669, now seen corresponding path program 1 times [2022-07-19 11:03:10,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:10,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918979426] [2022-07-19 11:03:10,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:10,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-19 11:03:10,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:10,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918979426] [2022-07-19 11:03:10,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918979426] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:10,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:10,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:10,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575147231] [2022-07-19 11:03:10,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:10,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:10,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:10,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:10,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:10,306 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) [2022-07-19 11:03:11,325 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 [] [2022-07-19 11:03:11,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:11,572 INFO L93 Difference]: Finished difference Result 753 states and 1206 transitions. [2022-07-19 11:03:11,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:11,573 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 [2022-07-19 11:03:11,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:11,574 INFO L225 Difference]: With dead ends: 753 [2022-07-19 11:03:11,574 INFO L226 Difference]: Without dead ends: 444 [2022-07-19 11:03:11,575 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 [2022-07-19 11:03:11,575 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 140 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:11,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 344 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 11:03:11,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-19 11:03:11,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 346. [2022-07-19 11:03:11,582 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) [2022-07-19 11:03:11,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 550 transitions. [2022-07-19 11:03:11,583 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 550 transitions. Word has length 104 [2022-07-19 11:03:11,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:11,583 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 550 transitions. [2022-07-19 11:03:11,583 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) [2022-07-19 11:03:11,584 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 550 transitions. [2022-07-19 11:03:11,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-19 11:03:11,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:11,585 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] [2022-07-19 11:03:11,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 11:03:11,585 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:11,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:11,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1681657825, now seen corresponding path program 1 times [2022-07-19 11:03:11,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:11,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568670957] [2022-07-19 11:03:11,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:11,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 11:03:11,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:11,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568670957] [2022-07-19 11:03:11,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568670957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:11,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:11,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:11,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604939025] [2022-07-19 11:03:11,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:11,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:11,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:11,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:11,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:11,664 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) [2022-07-19 11:03:12,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:13,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:13,043 INFO L93 Difference]: Finished difference Result 710 states and 1132 transitions. [2022-07-19 11:03:13,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:13,044 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 [2022-07-19 11:03:13,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:13,045 INFO L225 Difference]: With dead ends: 710 [2022-07-19 11:03:13,045 INFO L226 Difference]: Without dead ends: 385 [2022-07-19 11:03:13,046 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 [2022-07-19 11:03:13,046 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 29 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:13,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 505 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 11:03:13,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-07-19 11:03:13,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 368. [2022-07-19 11:03:13,051 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) [2022-07-19 11:03:13,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 583 transitions. [2022-07-19 11:03:13,052 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 583 transitions. Word has length 105 [2022-07-19 11:03:13,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:13,052 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 583 transitions. [2022-07-19 11:03:13,052 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) [2022-07-19 11:03:13,052 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 583 transitions. [2022-07-19 11:03:13,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-19 11:03:13,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:13,053 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] [2022-07-19 11:03:13,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 11:03:13,053 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:13,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:13,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1117720858, now seen corresponding path program 1 times [2022-07-19 11:03:13,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:13,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931433804] [2022-07-19 11:03:13,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:13,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:13,122 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-19 11:03:13,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:13,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931433804] [2022-07-19 11:03:13,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931433804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:13,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:13,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:13,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521335859] [2022-07-19 11:03:13,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:13,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:13,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:13,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:13,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:13,124 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) [2022-07-19 11:03:14,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:14,224 INFO L93 Difference]: Finished difference Result 732 states and 1164 transitions. [2022-07-19 11:03:14,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:14,224 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 [2022-07-19 11:03:14,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:14,226 INFO L225 Difference]: With dead ends: 732 [2022-07-19 11:03:14,226 INFO L226 Difference]: Without dead ends: 385 [2022-07-19 11:03:14,226 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 [2022-07-19 11:03:14,227 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 38 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:14,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 505 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 11:03:14,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-07-19 11:03:14,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 368. [2022-07-19 11:03:14,232 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) [2022-07-19 11:03:14,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 582 transitions. [2022-07-19 11:03:14,233 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 582 transitions. Word has length 118 [2022-07-19 11:03:14,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:14,233 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 582 transitions. [2022-07-19 11:03:14,233 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) [2022-07-19 11:03:14,233 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 582 transitions. [2022-07-19 11:03:14,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-19 11:03:14,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:14,234 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] [2022-07-19 11:03:14,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 11:03:14,234 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:14,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:14,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1862291490, now seen corresponding path program 1 times [2022-07-19 11:03:14,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:14,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305456611] [2022-07-19 11:03:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:14,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-19 11:03:14,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:14,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305456611] [2022-07-19 11:03:14,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305456611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:14,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:14,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:14,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696343136] [2022-07-19 11:03:14,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:14,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:14,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:14,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:14,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:14,334 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) [2022-07-19 11:03:15,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:15,375 INFO L93 Difference]: Finished difference Result 732 states and 1162 transitions. [2022-07-19 11:03:15,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:15,375 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 [2022-07-19 11:03:15,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:15,376 INFO L225 Difference]: With dead ends: 732 [2022-07-19 11:03:15,376 INFO L226 Difference]: Without dead ends: 385 [2022-07-19 11:03:15,377 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 [2022-07-19 11:03:15,377 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 36 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:15,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 505 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 11:03:15,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-07-19 11:03:15,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 368. [2022-07-19 11:03:15,382 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) [2022-07-19 11:03:15,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 581 transitions. [2022-07-19 11:03:15,383 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 581 transitions. Word has length 119 [2022-07-19 11:03:15,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:15,383 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 581 transitions. [2022-07-19 11:03:15,383 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) [2022-07-19 11:03:15,383 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 581 transitions. [2022-07-19 11:03:15,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-19 11:03:15,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:15,384 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] [2022-07-19 11:03:15,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 11:03:15,385 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:15,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:15,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2121527147, now seen corresponding path program 1 times [2022-07-19 11:03:15,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:15,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370489084] [2022-07-19 11:03:15,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:15,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:15,501 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-19 11:03:15,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:15,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370489084] [2022-07-19 11:03:15,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370489084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:15,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:15,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:15,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013574764] [2022-07-19 11:03:15,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:15,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:15,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:15,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:15,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:15,504 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) [2022-07-19 11:03:17,436 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 [] [2022-07-19 11:03:17,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:17,739 INFO L93 Difference]: Finished difference Result 791 states and 1244 transitions. [2022-07-19 11:03:17,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:17,740 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 [2022-07-19 11:03:17,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:17,741 INFO L225 Difference]: With dead ends: 791 [2022-07-19 11:03:17,741 INFO L226 Difference]: Without dead ends: 444 [2022-07-19 11:03:17,742 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 [2022-07-19 11:03:17,742 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 142 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:17,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 340 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 11:03:17,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-19 11:03:17,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 368. [2022-07-19 11:03:17,747 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) [2022-07-19 11:03:17,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 574 transitions. [2022-07-19 11:03:17,748 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 574 transitions. Word has length 120 [2022-07-19 11:03:17,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:17,748 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 574 transitions. [2022-07-19 11:03:17,748 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) [2022-07-19 11:03:17,748 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 574 transitions. [2022-07-19 11:03:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 11:03:17,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:17,749 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] [2022-07-19 11:03:17,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 11:03:17,749 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:17,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:17,750 INFO L85 PathProgramCache]: Analyzing trace with hash -255070744, now seen corresponding path program 1 times [2022-07-19 11:03:17,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:17,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35656575] [2022-07-19 11:03:17,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:17,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:03:17,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:17,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35656575] [2022-07-19 11:03:17,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35656575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:17,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:17,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:17,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147594988] [2022-07-19 11:03:17,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:17,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:17,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:17,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:17,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:17,830 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) [2022-07-19 11:03:19,235 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 [] [2022-07-19 11:03:19,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:19,514 INFO L93 Difference]: Finished difference Result 831 states and 1294 transitions. [2022-07-19 11:03:19,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:19,514 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 [2022-07-19 11:03:19,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:19,515 INFO L225 Difference]: With dead ends: 831 [2022-07-19 11:03:19,516 INFO L226 Difference]: Without dead ends: 484 [2022-07-19 11:03:19,516 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 [2022-07-19 11:03:19,516 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 111 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:19,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 341 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 11:03:19,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-07-19 11:03:19,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 411. [2022-07-19 11:03:19,522 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) [2022-07-19 11:03:19,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 643 transitions. [2022-07-19 11:03:19,523 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 643 transitions. Word has length 127 [2022-07-19 11:03:19,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:19,523 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 643 transitions. [2022-07-19 11:03:19,524 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) [2022-07-19 11:03:19,524 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 643 transitions. [2022-07-19 11:03:19,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-19 11:03:19,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:19,525 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 11:03:19,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 11:03:19,525 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:19,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:19,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1983227683, now seen corresponding path program 1 times [2022-07-19 11:03:19,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:19,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565397433] [2022-07-19 11:03:19,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:19,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:19,670 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:03:19,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:19,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565397433] [2022-07-19 11:03:19,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565397433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:19,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:19,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:19,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804990878] [2022-07-19 11:03:19,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:19,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:19,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:19,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:19,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:19,673 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) [2022-07-19 11:03:20,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:21,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:21,174 INFO L93 Difference]: Finished difference Result 877 states and 1368 transitions. [2022-07-19 11:03:21,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:21,175 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 [2022-07-19 11:03:21,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:21,176 INFO L225 Difference]: With dead ends: 877 [2022-07-19 11:03:21,176 INFO L226 Difference]: Without dead ends: 485 [2022-07-19 11:03:21,177 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 [2022-07-19 11:03:21,177 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 112 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:21,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 364 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 11:03:21,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-07-19 11:03:21,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 413. [2022-07-19 11:03:21,183 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) [2022-07-19 11:03:21,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 646 transitions. [2022-07-19 11:03:21,185 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 646 transitions. Word has length 128 [2022-07-19 11:03:21,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:21,185 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 646 transitions. [2022-07-19 11:03:21,185 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) [2022-07-19 11:03:21,185 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 646 transitions. [2022-07-19 11:03:21,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-19 11:03:21,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:21,186 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] [2022-07-19 11:03:21,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 11:03:21,187 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:21,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:21,187 INFO L85 PathProgramCache]: Analyzing trace with hash -753249217, now seen corresponding path program 1 times [2022-07-19 11:03:21,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:21,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855989794] [2022-07-19 11:03:21,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:21,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:21,276 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-19 11:03:21,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:21,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855989794] [2022-07-19 11:03:21,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855989794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:21,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:21,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 11:03:21,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327613854] [2022-07-19 11:03:21,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:21,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 11:03:21,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:21,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 11:03:21,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:21,278 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) [2022-07-19 11:03:22,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:24,693 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:24,993 INFO L93 Difference]: Finished difference Result 815 states and 1280 transitions. [2022-07-19 11:03:24,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 11:03:24,994 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 [2022-07-19 11:03:24,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:24,995 INFO L225 Difference]: With dead ends: 815 [2022-07-19 11:03:24,995 INFO L226 Difference]: Without dead ends: 423 [2022-07-19 11:03:24,996 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 [2022-07-19 11:03:24,996 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 150 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:24,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 364 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 311 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-07-19 11:03:24,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-07-19 11:03:25,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 422. [2022-07-19 11:03:25,002 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) [2022-07-19 11:03:25,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 657 transitions. [2022-07-19 11:03:25,002 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 657 transitions. Word has length 140 [2022-07-19 11:03:25,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:25,003 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 657 transitions. [2022-07-19 11:03:25,003 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) [2022-07-19 11:03:25,003 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 657 transitions. [2022-07-19 11:03:25,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-19 11:03:25,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:25,005 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] [2022-07-19 11:03:25,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 11:03:25,005 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:25,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:25,006 INFO L85 PathProgramCache]: Analyzing trace with hash -734463505, now seen corresponding path program 1 times [2022-07-19 11:03:25,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:25,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749168769] [2022-07-19 11:03:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:25,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:25,083 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 11:03:25,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:25,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749168769] [2022-07-19 11:03:25,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749168769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:25,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:25,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:25,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17622543] [2022-07-19 11:03:25,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:25,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:25,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:25,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:25,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:25,085 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) [2022-07-19 11:03:26,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:26,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:26,361 INFO L93 Difference]: Finished difference Result 907 states and 1411 transitions. [2022-07-19 11:03:26,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:26,362 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 [2022-07-19 11:03:26,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:26,363 INFO L225 Difference]: With dead ends: 907 [2022-07-19 11:03:26,363 INFO L226 Difference]: Without dead ends: 506 [2022-07-19 11:03:26,364 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 [2022-07-19 11:03:26,364 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 73 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:26,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 483 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 11:03:26,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-07-19 11:03:26,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 454. [2022-07-19 11:03:26,372 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) [2022-07-19 11:03:26,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 707 transitions. [2022-07-19 11:03:26,373 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 707 transitions. Word has length 140 [2022-07-19 11:03:26,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:26,373 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 707 transitions. [2022-07-19 11:03:26,373 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) [2022-07-19 11:03:26,373 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 707 transitions. [2022-07-19 11:03:26,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-19 11:03:26,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:26,374 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] [2022-07-19 11:03:26,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 11:03:26,375 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:26,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:26,375 INFO L85 PathProgramCache]: Analyzing trace with hash 866607601, now seen corresponding path program 1 times [2022-07-19 11:03:26,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:26,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685658872] [2022-07-19 11:03:26,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:26,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-19 11:03:26,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:26,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685658872] [2022-07-19 11:03:26,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685658872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:26,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:26,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:26,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82576008] [2022-07-19 11:03:26,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:26,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:26,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:26,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:26,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:26,463 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) [2022-07-19 11:03:27,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:27,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:27,975 INFO L93 Difference]: Finished difference Result 932 states and 1453 transitions. [2022-07-19 11:03:27,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:27,976 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 [2022-07-19 11:03:27,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:27,977 INFO L225 Difference]: With dead ends: 932 [2022-07-19 11:03:27,977 INFO L226 Difference]: Without dead ends: 499 [2022-07-19 11:03:27,978 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 [2022-07-19 11:03:27,978 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 34 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:27,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 593 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 11:03:27,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-07-19 11:03:27,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 478. [2022-07-19 11:03:27,985 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) [2022-07-19 11:03:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 743 transitions. [2022-07-19 11:03:27,986 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 743 transitions. Word has length 140 [2022-07-19 11:03:27,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:27,986 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 743 transitions. [2022-07-19 11:03:27,986 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) [2022-07-19 11:03:27,986 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 743 transitions. [2022-07-19 11:03:27,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 11:03:27,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:27,988 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] [2022-07-19 11:03:27,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 11:03:27,988 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:27,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:27,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1120474823, now seen corresponding path program 1 times [2022-07-19 11:03:27,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:27,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938302980] [2022-07-19 11:03:27,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:27,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 11:03:28,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:28,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938302980] [2022-07-19 11:03:28,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938302980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:28,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:28,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:28,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791233065] [2022-07-19 11:03:28,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:28,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:28,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:28,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:28,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:28,078 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) [2022-07-19 11:03:28,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:28,722 INFO L93 Difference]: Finished difference Result 985 states and 1530 transitions. [2022-07-19 11:03:28,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:28,723 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 [2022-07-19 11:03:28,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:28,724 INFO L225 Difference]: With dead ends: 985 [2022-07-19 11:03:28,724 INFO L226 Difference]: Without dead ends: 528 [2022-07-19 11:03:28,725 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 [2022-07-19 11:03:28,725 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 70 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:28,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 481 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:03:28,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-07-19 11:03:28,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 479. [2022-07-19 11:03:28,741 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) [2022-07-19 11:03:28,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 744 transitions. [2022-07-19 11:03:28,742 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 744 transitions. Word has length 141 [2022-07-19 11:03:28,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:28,742 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 744 transitions. [2022-07-19 11:03:28,743 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) [2022-07-19 11:03:28,743 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 744 transitions. [2022-07-19 11:03:28,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-19 11:03:28,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:28,744 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] [2022-07-19 11:03:28,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 11:03:28,745 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:28,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:28,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1773983904, now seen corresponding path program 1 times [2022-07-19 11:03:28,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:28,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281047170] [2022-07-19 11:03:28,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:28,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 11:03:28,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:28,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281047170] [2022-07-19 11:03:28,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281047170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:28,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:28,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:28,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551778316] [2022-07-19 11:03:28,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:28,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:28,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:28,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:28,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:28,834 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) [2022-07-19 11:03:29,887 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 [] [2022-07-19 11:03:30,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:30,102 INFO L93 Difference]: Finished difference Result 986 states and 1530 transitions. [2022-07-19 11:03:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:30,102 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 [2022-07-19 11:03:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:30,104 INFO L225 Difference]: With dead ends: 986 [2022-07-19 11:03:30,104 INFO L226 Difference]: Without dead ends: 528 [2022-07-19 11:03:30,104 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 [2022-07-19 11:03:30,105 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 72 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:30,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 481 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 11:03:30,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-07-19 11:03:30,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 479. [2022-07-19 11:03:30,114 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) [2022-07-19 11:03:30,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 743 transitions. [2022-07-19 11:03:30,115 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 743 transitions. Word has length 143 [2022-07-19 11:03:30,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:30,115 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 743 transitions. [2022-07-19 11:03:30,115 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) [2022-07-19 11:03:30,115 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 743 transitions. [2022-07-19 11:03:30,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-19 11:03:30,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:30,116 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] [2022-07-19 11:03:30,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 11:03:30,117 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:30,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:30,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1773090698, now seen corresponding path program 1 times [2022-07-19 11:03:30,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:30,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307991992] [2022-07-19 11:03:30,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:30,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 11:03:30,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:30,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307991992] [2022-07-19 11:03:30,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307991992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:30,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:30,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:30,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100198701] [2022-07-19 11:03:30,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:30,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:30,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:30,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:30,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:30,223 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) [2022-07-19 11:03:31,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:31,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:31,693 INFO L93 Difference]: Finished difference Result 978 states and 1515 transitions. [2022-07-19 11:03:31,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:31,693 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 [2022-07-19 11:03:31,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:31,695 INFO L225 Difference]: With dead ends: 978 [2022-07-19 11:03:31,695 INFO L226 Difference]: Without dead ends: 520 [2022-07-19 11:03:31,696 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 [2022-07-19 11:03:31,696 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 61 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:31,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 499 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 11:03:31,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-07-19 11:03:31,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 479. [2022-07-19 11:03:31,705 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) [2022-07-19 11:03:31,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 742 transitions. [2022-07-19 11:03:31,706 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 742 transitions. Word has length 144 [2022-07-19 11:03:31,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:31,706 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 742 transitions. [2022-07-19 11:03:31,706 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) [2022-07-19 11:03:31,707 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 742 transitions. [2022-07-19 11:03:31,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-19 11:03:31,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:31,708 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] [2022-07-19 11:03:31,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 11:03:31,708 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:31,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:31,709 INFO L85 PathProgramCache]: Analyzing trace with hash 502920678, now seen corresponding path program 1 times [2022-07-19 11:03:31,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:31,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417105840] [2022-07-19 11:03:31,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:31,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 11:03:31,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:31,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417105840] [2022-07-19 11:03:31,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417105840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:31,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:31,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:31,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830021579] [2022-07-19 11:03:31,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:31,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:31,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:31,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:31,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:31,811 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) [2022-07-19 11:03:33,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:33,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:33,442 INFO L93 Difference]: Finished difference Result 1051 states and 1625 transitions. [2022-07-19 11:03:33,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:33,443 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 [2022-07-19 11:03:33,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:33,445 INFO L225 Difference]: With dead ends: 1051 [2022-07-19 11:03:33,445 INFO L226 Difference]: Without dead ends: 593 [2022-07-19 11:03:33,445 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 [2022-07-19 11:03:33,446 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 118 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:33,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 350 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 11:03:33,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-07-19 11:03:33,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 514. [2022-07-19 11:03:33,455 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) [2022-07-19 11:03:33,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 796 transitions. [2022-07-19 11:03:33,456 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 796 transitions. Word has length 150 [2022-07-19 11:03:33,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:33,457 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 796 transitions. [2022-07-19 11:03:33,457 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) [2022-07-19 11:03:33,457 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 796 transitions. [2022-07-19 11:03:33,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-19 11:03:33,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:33,459 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] [2022-07-19 11:03:33,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 11:03:33,459 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:33,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:33,459 INFO L85 PathProgramCache]: Analyzing trace with hash -2134561589, now seen corresponding path program 1 times [2022-07-19 11:03:33,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:33,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501222228] [2022-07-19 11:03:33,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:33,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 11:03:33,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:33,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501222228] [2022-07-19 11:03:33,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501222228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:33,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:33,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:33,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327421675] [2022-07-19 11:03:33,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:33,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:33,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:33,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:33,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:33,560 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) [2022-07-19 11:03:34,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:34,156 INFO L93 Difference]: Finished difference Result 1046 states and 1618 transitions. [2022-07-19 11:03:34,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:34,157 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 [2022-07-19 11:03:34,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:34,159 INFO L225 Difference]: With dead ends: 1046 [2022-07-19 11:03:34,159 INFO L226 Difference]: Without dead ends: 553 [2022-07-19 11:03:34,159 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 [2022-07-19 11:03:34,160 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 51 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:34,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 501 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:03:34,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-19 11:03:34,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 519. [2022-07-19 11:03:34,169 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) [2022-07-19 11:03:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 803 transitions. [2022-07-19 11:03:34,170 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 803 transitions. Word has length 151 [2022-07-19 11:03:34,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:34,170 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 803 transitions. [2022-07-19 11:03:34,171 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) [2022-07-19 11:03:34,171 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 803 transitions. [2022-07-19 11:03:34,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-19 11:03:34,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:34,194 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] [2022-07-19 11:03:34,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 11:03:34,194 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:34,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:34,195 INFO L85 PathProgramCache]: Analyzing trace with hash 549512543, now seen corresponding path program 1 times [2022-07-19 11:03:34,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:34,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641682178] [2022-07-19 11:03:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:34,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:34,293 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-19 11:03:34,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:34,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641682178] [2022-07-19 11:03:34,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641682178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:34,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:34,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:34,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573435590] [2022-07-19 11:03:34,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:34,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:34,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:34,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:34,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:34,295 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) [2022-07-19 11:03:36,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:36,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:36,554 INFO L93 Difference]: Finished difference Result 1051 states and 1624 transitions. [2022-07-19 11:03:36,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:36,555 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 [2022-07-19 11:03:36,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:36,557 INFO L225 Difference]: With dead ends: 1051 [2022-07-19 11:03:36,557 INFO L226 Difference]: Without dead ends: 553 [2022-07-19 11:03:36,557 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 [2022-07-19 11:03:36,558 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 74 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:36,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 523 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 218 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 11:03:36,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-19 11:03:36,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 519. [2022-07-19 11:03:36,568 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) [2022-07-19 11:03:36,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 802 transitions. [2022-07-19 11:03:36,569 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 802 transitions. Word has length 155 [2022-07-19 11:03:36,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:36,569 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 802 transitions. [2022-07-19 11:03:36,570 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) [2022-07-19 11:03:36,570 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 802 transitions. [2022-07-19 11:03:36,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-19 11:03:36,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:36,571 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] [2022-07-19 11:03:36,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 11:03:36,571 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:36,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:36,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1020868893, now seen corresponding path program 1 times [2022-07-19 11:03:36,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:36,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577624657] [2022-07-19 11:03:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:36,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:36,699 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-19 11:03:36,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:36,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577624657] [2022-07-19 11:03:36,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577624657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:36,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:36,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:36,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948922065] [2022-07-19 11:03:36,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:36,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:36,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:36,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:36,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:36,702 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) [2022-07-19 11:03:37,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:37,157 INFO L93 Difference]: Finished difference Result 1038 states and 1606 transitions. [2022-07-19 11:03:37,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:37,158 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 [2022-07-19 11:03:37,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:37,159 INFO L225 Difference]: With dead ends: 1038 [2022-07-19 11:03:37,159 INFO L226 Difference]: Without dead ends: 540 [2022-07-19 11:03:37,160 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 [2022-07-19 11:03:37,160 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 [2022-07-19 11:03:37,161 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] [2022-07-19 11:03:37,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-07-19 11:03:37,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 519. [2022-07-19 11:03:37,167 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) [2022-07-19 11:03:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 801 transitions. [2022-07-19 11:03:37,168 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 801 transitions. Word has length 155 [2022-07-19 11:03:37,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:37,168 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 801 transitions. [2022-07-19 11:03:37,169 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) [2022-07-19 11:03:37,169 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 801 transitions. [2022-07-19 11:03:37,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 11:03:37,169 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:37,170 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] [2022-07-19 11:03:37,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 11:03:37,170 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:37,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:37,170 INFO L85 PathProgramCache]: Analyzing trace with hash 981129845, now seen corresponding path program 1 times [2022-07-19 11:03:37,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:37,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077967563] [2022-07-19 11:03:37,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:37,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-19 11:03:37,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:37,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077967563] [2022-07-19 11:03:37,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077967563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:37,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:37,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:37,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832392201] [2022-07-19 11:03:37,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:37,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:37,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:37,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:37,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:37,252 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) [2022-07-19 11:03:38,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:39,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:39,118 INFO L93 Difference]: Finished difference Result 1089 states and 1676 transitions. [2022-07-19 11:03:39,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:39,118 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 [2022-07-19 11:03:39,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:39,120 INFO L225 Difference]: With dead ends: 1089 [2022-07-19 11:03:39,120 INFO L226 Difference]: Without dead ends: 591 [2022-07-19 11:03:39,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:39,121 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 140 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:39,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 374 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 11:03:39,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-07-19 11:03:39,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 519. [2022-07-19 11:03:39,128 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) [2022-07-19 11:03:39,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 791 transitions. [2022-07-19 11:03:39,129 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 791 transitions. Word has length 156 [2022-07-19 11:03:39,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:39,130 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 791 transitions. [2022-07-19 11:03:39,130 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) [2022-07-19 11:03:39,130 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 791 transitions. [2022-07-19 11:03:39,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-19 11:03:39,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:39,131 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] [2022-07-19 11:03:39,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 11:03:39,132 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:39,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:39,132 INFO L85 PathProgramCache]: Analyzing trace with hash 158699004, now seen corresponding path program 1 times [2022-07-19 11:03:39,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:39,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315488253] [2022-07-19 11:03:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:39,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:39,214 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-19 11:03:39,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:39,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315488253] [2022-07-19 11:03:39,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315488253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:39,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:39,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:39,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071108773] [2022-07-19 11:03:39,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:39,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:39,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:39,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:39,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:39,216 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) [2022-07-19 11:03:40,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:40,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:40,635 INFO L93 Difference]: Finished difference Result 1041 states and 1588 transitions. [2022-07-19 11:03:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:40,635 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 [2022-07-19 11:03:40,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:40,637 INFO L225 Difference]: With dead ends: 1041 [2022-07-19 11:03:40,637 INFO L226 Difference]: Without dead ends: 543 [2022-07-19 11:03:40,637 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 [2022-07-19 11:03:40,638 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 53 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:40,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 523 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 11:03:40,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-07-19 11:03:40,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 519. [2022-07-19 11:03:40,645 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) [2022-07-19 11:03:40,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 790 transitions. [2022-07-19 11:03:40,645 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 790 transitions. Word has length 162 [2022-07-19 11:03:40,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:40,645 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 790 transitions. [2022-07-19 11:03:40,646 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) [2022-07-19 11:03:40,646 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 790 transitions. [2022-07-19 11:03:40,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-19 11:03:40,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:40,647 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] [2022-07-19 11:03:40,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-19 11:03:40,647 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:40,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:40,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1123473282, now seen corresponding path program 1 times [2022-07-19 11:03:40,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:40,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169669609] [2022-07-19 11:03:40,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:40,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-19 11:03:40,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:40,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169669609] [2022-07-19 11:03:40,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169669609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:40,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:40,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:40,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771969507] [2022-07-19 11:03:40,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:40,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:40,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:40,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:40,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:40,733 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) [2022-07-19 11:03:42,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:42,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:42,229 INFO L93 Difference]: Finished difference Result 1066 states and 1625 transitions. [2022-07-19 11:03:42,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:42,229 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 [2022-07-19 11:03:42,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:42,231 INFO L225 Difference]: With dead ends: 1066 [2022-07-19 11:03:42,231 INFO L226 Difference]: Without dead ends: 568 [2022-07-19 11:03:42,231 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 [2022-07-19 11:03:42,232 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 36 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:42,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 569 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 11:03:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-07-19 11:03:42,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 545. [2022-07-19 11:03:42,239 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) [2022-07-19 11:03:42,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 829 transitions. [2022-07-19 11:03:42,240 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 829 transitions. Word has length 162 [2022-07-19 11:03:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:42,240 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 829 transitions. [2022-07-19 11:03:42,240 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) [2022-07-19 11:03:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 829 transitions. [2022-07-19 11:03:42,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 11:03:42,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:42,242 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] [2022-07-19 11:03:42,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-19 11:03:42,242 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:42,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:42,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1296259281, now seen corresponding path program 1 times [2022-07-19 11:03:42,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:42,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881960734] [2022-07-19 11:03:42,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:42,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:42,349 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-19 11:03:42,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:42,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881960734] [2022-07-19 11:03:42,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881960734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:42,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:42,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:42,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068194125] [2022-07-19 11:03:42,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:42,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:42,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:42,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:42,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:42,351 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) [2022-07-19 11:03:43,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:44,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:44,116 INFO L93 Difference]: Finished difference Result 1093 states and 1664 transitions. [2022-07-19 11:03:44,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:44,117 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 [2022-07-19 11:03:44,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:44,118 INFO L225 Difference]: With dead ends: 1093 [2022-07-19 11:03:44,118 INFO L226 Difference]: Without dead ends: 569 [2022-07-19 11:03:44,119 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 [2022-07-19 11:03:44,119 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 50 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:44,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 523 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 11:03:44,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-07-19 11:03:44,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 545. [2022-07-19 11:03:44,127 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) [2022-07-19 11:03:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 828 transitions. [2022-07-19 11:03:44,129 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 828 transitions. Word has length 168 [2022-07-19 11:03:44,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:44,130 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 828 transitions. [2022-07-19 11:03:44,130 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) [2022-07-19 11:03:44,130 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 828 transitions. [2022-07-19 11:03:44,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 11:03:44,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:44,131 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] [2022-07-19 11:03:44,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-19 11:03:44,132 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:44,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:44,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1600024391, now seen corresponding path program 1 times [2022-07-19 11:03:44,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:44,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847146117] [2022-07-19 11:03:44,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:44,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:44,216 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-19 11:03:44,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:44,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847146117] [2022-07-19 11:03:44,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847146117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:44,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:44,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:03:44,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366252255] [2022-07-19 11:03:44,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:44,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:03:44,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:44,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:03:44,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:03:44,218 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) [2022-07-19 11:03:44,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:44,278 INFO L93 Difference]: Finished difference Result 1585 states and 2424 transitions. [2022-07-19 11:03:44,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:03:44,279 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 [2022-07-19 11:03:44,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:44,281 INFO L225 Difference]: With dead ends: 1585 [2022-07-19 11:03:44,282 INFO L226 Difference]: Without dead ends: 1061 [2022-07-19 11:03:44,283 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 [2022-07-19 11:03:44,283 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 [2022-07-19 11:03:44,283 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] [2022-07-19 11:03:44,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-07-19 11:03:44,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1061. [2022-07-19 11:03:44,297 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) [2022-07-19 11:03:44,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1612 transitions. [2022-07-19 11:03:44,299 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1612 transitions. Word has length 168 [2022-07-19 11:03:44,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:44,299 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1612 transitions. [2022-07-19 11:03:44,299 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) [2022-07-19 11:03:44,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1612 transitions. [2022-07-19 11:03:44,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-19 11:03:44,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:44,301 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] [2022-07-19 11:03:44,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-19 11:03:44,301 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:44,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:44,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1262826533, now seen corresponding path program 1 times [2022-07-19 11:03:44,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:44,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261404245] [2022-07-19 11:03:44,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:44,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-19 11:03:44,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:44,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261404245] [2022-07-19 11:03:44,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261404245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:44,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:44,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:44,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165306136] [2022-07-19 11:03:44,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:44,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:44,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:44,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:44,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:44,393 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) [2022-07-19 11:03:45,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:45,588 INFO L93 Difference]: Finished difference Result 2239 states and 3383 transitions. [2022-07-19 11:03:45,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:45,600 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 [2022-07-19 11:03:45,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:45,602 INFO L225 Difference]: With dead ends: 2239 [2022-07-19 11:03:45,603 INFO L226 Difference]: Without dead ends: 1199 [2022-07-19 11:03:45,603 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 [2022-07-19 11:03:45,604 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 125 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:45,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 350 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 11:03:45,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2022-07-19 11:03:45,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1061. [2022-07-19 11:03:45,619 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) [2022-07-19 11:03:45,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1596 transitions. [2022-07-19 11:03:45,621 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1596 transitions. Word has length 169 [2022-07-19 11:03:45,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:45,621 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1596 transitions. [2022-07-19 11:03:45,621 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) [2022-07-19 11:03:45,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1596 transitions. [2022-07-19 11:03:45,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-19 11:03:45,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:45,623 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] [2022-07-19 11:03:45,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-19 11:03:45,623 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:45,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:45,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1667209802, now seen corresponding path program 1 times [2022-07-19 11:03:45,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:45,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269811964] [2022-07-19 11:03:45,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:45,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 11:03:45,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:45,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269811964] [2022-07-19 11:03:45,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269811964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:45,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:45,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:03:45,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085075956] [2022-07-19 11:03:45,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:45,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:03:45,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:45,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:03:45,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:03:45,705 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) [2022-07-19 11:03:45,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:45,750 INFO L93 Difference]: Finished difference Result 2585 states and 3901 transitions. [2022-07-19 11:03:45,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:03:45,750 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 [2022-07-19 11:03:45,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:45,754 INFO L225 Difference]: With dead ends: 2585 [2022-07-19 11:03:45,754 INFO L226 Difference]: Without dead ends: 1545 [2022-07-19 11:03:45,755 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 [2022-07-19 11:03:45,757 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 [2022-07-19 11:03:45,758 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] [2022-07-19 11:03:45,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2022-07-19 11:03:45,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1545. [2022-07-19 11:03:45,796 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) [2022-07-19 11:03:45,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2321 transitions. [2022-07-19 11:03:45,798 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2321 transitions. Word has length 169 [2022-07-19 11:03:45,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:45,798 INFO L495 AbstractCegarLoop]: Abstraction has 1545 states and 2321 transitions. [2022-07-19 11:03:45,798 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) [2022-07-19 11:03:45,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2321 transitions. [2022-07-19 11:03:45,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-19 11:03:45,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:45,801 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] [2022-07-19 11:03:45,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-19 11:03:45,801 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:45,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:45,801 INFO L85 PathProgramCache]: Analyzing trace with hash 520999631, now seen corresponding path program 1 times [2022-07-19 11:03:45,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:45,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727969331] [2022-07-19 11:03:45,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:45,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:45,886 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-19 11:03:45,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:45,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727969331] [2022-07-19 11:03:45,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727969331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:45,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:45,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:03:45,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176189759] [2022-07-19 11:03:45,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:45,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:03:45,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:45,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:03:45,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:03:45,889 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) [2022-07-19 11:03:45,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:45,938 INFO L93 Difference]: Finished difference Result 3544 states and 5339 transitions. [2022-07-19 11:03:45,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:03:45,938 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 [2022-07-19 11:03:45,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:45,944 INFO L225 Difference]: With dead ends: 3544 [2022-07-19 11:03:45,944 INFO L226 Difference]: Without dead ends: 2020 [2022-07-19 11:03:45,945 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 [2022-07-19 11:03:45,951 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 [2022-07-19 11:03:45,951 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] [2022-07-19 11:03:45,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2022-07-19 11:03:45,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2022-07-19 11:03:46,001 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) [2022-07-19 11:03:46,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3034 transitions. [2022-07-19 11:03:46,004 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3034 transitions. Word has length 170 [2022-07-19 11:03:46,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:46,004 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 3034 transitions. [2022-07-19 11:03:46,005 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) [2022-07-19 11:03:46,005 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3034 transitions. [2022-07-19 11:03:46,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-19 11:03:46,008 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:46,008 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] [2022-07-19 11:03:46,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-19 11:03:46,008 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:46,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:46,009 INFO L85 PathProgramCache]: Analyzing trace with hash -427052335, now seen corresponding path program 1 times [2022-07-19 11:03:46,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:46,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794418842] [2022-07-19 11:03:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:46,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:46,078 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-19 11:03:46,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:46,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794418842] [2022-07-19 11:03:46,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794418842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:46,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:46,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:03:46,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128026974] [2022-07-19 11:03:46,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:46,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:03:46,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:46,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:03:46,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:03:46,080 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) [2022-07-19 11:03:46,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:46,124 INFO L93 Difference]: Finished difference Result 4046 states and 6080 transitions. [2022-07-19 11:03:46,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:03:46,125 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 [2022-07-19 11:03:46,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:46,130 INFO L225 Difference]: With dead ends: 4046 [2022-07-19 11:03:46,130 INFO L226 Difference]: Without dead ends: 2047 [2022-07-19 11:03:46,132 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 [2022-07-19 11:03:46,133 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 [2022-07-19 11:03:46,133 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] [2022-07-19 11:03:46,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2022-07-19 11:03:46,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 2047. [2022-07-19 11:03:46,185 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) [2022-07-19 11:03:46,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 3069 transitions. [2022-07-19 11:03:46,187 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 3069 transitions. Word has length 170 [2022-07-19 11:03:46,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:46,188 INFO L495 AbstractCegarLoop]: Abstraction has 2047 states and 3069 transitions. [2022-07-19 11:03:46,188 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) [2022-07-19 11:03:46,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 3069 transitions. [2022-07-19 11:03:46,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-19 11:03:46,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:46,191 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] [2022-07-19 11:03:46,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-19 11:03:46,191 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:46,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:46,192 INFO L85 PathProgramCache]: Analyzing trace with hash -41189933, now seen corresponding path program 1 times [2022-07-19 11:03:46,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:46,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885869416] [2022-07-19 11:03:46,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:46,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-19 11:03:46,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:46,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885869416] [2022-07-19 11:03:46,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885869416] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:46,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:46,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:03:46,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900285445] [2022-07-19 11:03:46,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:46,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:03:46,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:46,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:03:46,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:03:46,269 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) [2022-07-19 11:03:46,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:46,305 INFO L93 Difference]: Finished difference Result 4075 states and 6116 transitions. [2022-07-19 11:03:46,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:03:46,305 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 [2022-07-19 11:03:46,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:46,323 INFO L225 Difference]: With dead ends: 4075 [2022-07-19 11:03:46,323 INFO L226 Difference]: Without dead ends: 2049 [2022-07-19 11:03:46,325 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 [2022-07-19 11:03:46,325 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 [2022-07-19 11:03:46,325 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] [2022-07-19 11:03:46,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2022-07-19 11:03:46,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2049. [2022-07-19 11:03:46,381 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) [2022-07-19 11:03:46,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 3071 transitions. [2022-07-19 11:03:46,383 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 3071 transitions. Word has length 170 [2022-07-19 11:03:46,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:46,384 INFO L495 AbstractCegarLoop]: Abstraction has 2049 states and 3071 transitions. [2022-07-19 11:03:46,384 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) [2022-07-19 11:03:46,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 3071 transitions. [2022-07-19 11:03:46,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-07-19 11:03:46,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:46,387 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] [2022-07-19 11:03:46,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-19 11:03:46,387 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:46,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:46,387 INFO L85 PathProgramCache]: Analyzing trace with hash -294401179, now seen corresponding path program 1 times [2022-07-19 11:03:46,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:46,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809609200] [2022-07-19 11:03:46,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:46,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:46,509 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-19 11:03:46,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:46,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809609200] [2022-07-19 11:03:46,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809609200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:46,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:46,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:46,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460862179] [2022-07-19 11:03:46,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:46,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:46,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:46,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:46,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:46,512 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) [2022-07-19 11:03:47,837 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 [] [2022-07-19 11:03:48,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:48,139 INFO L93 Difference]: Finished difference Result 4404 states and 6578 transitions. [2022-07-19 11:03:48,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:48,140 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 [2022-07-19 11:03:48,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:48,151 INFO L225 Difference]: With dead ends: 4404 [2022-07-19 11:03:48,151 INFO L226 Difference]: Without dead ends: 2378 [2022-07-19 11:03:48,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:48,154 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 70 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:48,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 629 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 11:03:48,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2022-07-19 11:03:48,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 2169. [2022-07-19 11:03:48,215 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) [2022-07-19 11:03:48,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3255 transitions. [2022-07-19 11:03:48,234 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3255 transitions. Word has length 263 [2022-07-19 11:03:48,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:48,234 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3255 transitions. [2022-07-19 11:03:48,234 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) [2022-07-19 11:03:48,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3255 transitions. [2022-07-19 11:03:48,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-07-19 11:03:48,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:48,240 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] [2022-07-19 11:03:48,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-19 11:03:48,241 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:48,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:48,242 INFO L85 PathProgramCache]: Analyzing trace with hash -363444605, now seen corresponding path program 1 times [2022-07-19 11:03:48,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:48,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209901594] [2022-07-19 11:03:48,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:48,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-19 11:03:48,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:48,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209901594] [2022-07-19 11:03:48,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209901594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:48,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:48,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:48,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42584249] [2022-07-19 11:03:48,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:48,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:48,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:48,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:48,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:48,397 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) [2022-07-19 11:03:49,916 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 [] [2022-07-19 11:03:50,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:50,195 INFO L93 Difference]: Finished difference Result 4516 states and 6750 transitions. [2022-07-19 11:03:50,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:50,195 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 [2022-07-19 11:03:50,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:50,199 INFO L225 Difference]: With dead ends: 4516 [2022-07-19 11:03:50,199 INFO L226 Difference]: Without dead ends: 2370 [2022-07-19 11:03:50,201 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 [2022-07-19 11:03:50,204 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 67 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:50,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 625 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 11:03:50,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2022-07-19 11:03:50,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 2173. [2022-07-19 11:03:50,246 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) [2022-07-19 11:03:50,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 3259 transitions. [2022-07-19 11:03:50,249 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 3259 transitions. Word has length 264 [2022-07-19 11:03:50,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:50,251 INFO L495 AbstractCegarLoop]: Abstraction has 2173 states and 3259 transitions. [2022-07-19 11:03:50,251 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) [2022-07-19 11:03:50,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 3259 transitions. [2022-07-19 11:03:50,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-19 11:03:50,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:50,271 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] [2022-07-19 11:03:50,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-19 11:03:50,271 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:50,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:50,273 INFO L85 PathProgramCache]: Analyzing trace with hash -117417430, now seen corresponding path program 1 times [2022-07-19 11:03:50,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:50,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36336018] [2022-07-19 11:03:50,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:50,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-19 11:03:50,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:50,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36336018] [2022-07-19 11:03:50,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36336018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:50,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:50,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:50,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808614254] [2022-07-19 11:03:50,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:50,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:50,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:50,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:50,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:50,405 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) [2022-07-19 11:03:51,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:51,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:51,948 INFO L93 Difference]: Finished difference Result 4520 states and 6750 transitions. [2022-07-19 11:03:51,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:51,949 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 [2022-07-19 11:03:51,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:51,952 INFO L225 Difference]: With dead ends: 4520 [2022-07-19 11:03:51,952 INFO L226 Difference]: Without dead ends: 2370 [2022-07-19 11:03:51,953 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 [2022-07-19 11:03:51,953 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 69 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:51,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 623 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 11:03:51,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2022-07-19 11:03:51,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 2173. [2022-07-19 11:03:51,987 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) [2022-07-19 11:03:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 3255 transitions. [2022-07-19 11:03:51,989 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 3255 transitions. Word has length 266 [2022-07-19 11:03:51,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:51,990 INFO L495 AbstractCegarLoop]: Abstraction has 2173 states and 3255 transitions. [2022-07-19 11:03:51,990 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) [2022-07-19 11:03:51,990 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 3255 transitions. [2022-07-19 11:03:51,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-07-19 11:03:51,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:51,993 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] [2022-07-19 11:03:51,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-19 11:03:51,993 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:51,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:51,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1959137556, now seen corresponding path program 1 times [2022-07-19 11:03:51,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:51,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967046391] [2022-07-19 11:03:51,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:51,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:52,107 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 389 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-19 11:03:52,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:52,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967046391] [2022-07-19 11:03:52,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967046391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:52,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:52,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:52,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357682849] [2022-07-19 11:03:52,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:52,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:52,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:52,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:52,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:52,109 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) [2022-07-19 11:03:52,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:52,713 INFO L93 Difference]: Finished difference Result 4488 states and 6690 transitions. [2022-07-19 11:03:52,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:52,714 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 [2022-07-19 11:03:52,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:52,716 INFO L225 Difference]: With dead ends: 4488 [2022-07-19 11:03:52,716 INFO L226 Difference]: Without dead ends: 2338 [2022-07-19 11:03:52,718 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 [2022-07-19 11:03:52,718 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 58 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:52,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 613 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:03:52,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2022-07-19 11:03:52,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 2173. [2022-07-19 11:03:52,746 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) [2022-07-19 11:03:52,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 3251 transitions. [2022-07-19 11:03:52,749 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 3251 transitions. Word has length 267 [2022-07-19 11:03:52,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:52,749 INFO L495 AbstractCegarLoop]: Abstraction has 2173 states and 3251 transitions. [2022-07-19 11:03:52,749 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) [2022-07-19 11:03:52,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 3251 transitions. [2022-07-19 11:03:52,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-19 11:03:52,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:52,752 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] [2022-07-19 11:03:52,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-19 11:03:52,752 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:52,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:52,753 INFO L85 PathProgramCache]: Analyzing trace with hash 842003861, now seen corresponding path program 1 times [2022-07-19 11:03:52,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:52,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296899532] [2022-07-19 11:03:52,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:52,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-19 11:03:52,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:52,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296899532] [2022-07-19 11:03:52,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296899532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:52,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:52,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:52,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769306338] [2022-07-19 11:03:52,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:52,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:52,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:52,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:52,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:52,862 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) [2022-07-19 11:03:53,926 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:54,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:54,223 INFO L93 Difference]: Finished difference Result 4480 states and 6674 transitions. [2022-07-19 11:03:54,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:54,224 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 [2022-07-19 11:03:54,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:54,228 INFO L225 Difference]: With dead ends: 4480 [2022-07-19 11:03:54,228 INFO L226 Difference]: Without dead ends: 2330 [2022-07-19 11:03:54,229 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 [2022-07-19 11:03:54,230 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 49 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:54,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 609 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 11:03:54,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2022-07-19 11:03:54,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2153. [2022-07-19 11:03:54,267 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) [2022-07-19 11:03:54,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3231 transitions. [2022-07-19 11:03:54,270 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3231 transitions. Word has length 274 [2022-07-19 11:03:54,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:54,270 INFO L495 AbstractCegarLoop]: Abstraction has 2153 states and 3231 transitions. [2022-07-19 11:03:54,270 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) [2022-07-19 11:03:54,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3231 transitions. [2022-07-19 11:03:54,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-07-19 11:03:54,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:54,274 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] [2022-07-19 11:03:54,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-19 11:03:54,275 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:54,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:54,275 INFO L85 PathProgramCache]: Analyzing trace with hash 447101225, now seen corresponding path program 1 times [2022-07-19 11:03:54,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:54,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655164855] [2022-07-19 11:03:54,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:54,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 397 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-19 11:03:54,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:54,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655164855] [2022-07-19 11:03:54,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655164855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:54,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:54,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:54,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478718036] [2022-07-19 11:03:54,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:54,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:54,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:54,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:54,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:54,441 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) [2022-07-19 11:03:55,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:55,225 INFO L93 Difference]: Finished difference Result 4420 states and 6602 transitions. [2022-07-19 11:03:55,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:55,226 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 [2022-07-19 11:03:55,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:55,229 INFO L225 Difference]: With dead ends: 4420 [2022-07-19 11:03:55,229 INFO L226 Difference]: Without dead ends: 2290 [2022-07-19 11:03:55,231 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 [2022-07-19 11:03:55,232 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, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:55,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 595 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:03:55,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2022-07-19 11:03:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 2153. [2022-07-19 11:03:55,262 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) [2022-07-19 11:03:55,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3227 transitions. [2022-07-19 11:03:55,264 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3227 transitions. Word has length 278 [2022-07-19 11:03:55,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:55,265 INFO L495 AbstractCegarLoop]: Abstraction has 2153 states and 3227 transitions. [2022-07-19 11:03:55,265 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) [2022-07-19 11:03:55,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3227 transitions. [2022-07-19 11:03:55,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-19 11:03:55,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:55,268 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] [2022-07-19 11:03:55,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-19 11:03:55,269 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:55,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:55,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1893596487, now seen corresponding path program 1 times [2022-07-19 11:03:55,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:55,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676405504] [2022-07-19 11:03:55,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:55,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-19 11:03:55,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:55,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676405504] [2022-07-19 11:03:55,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676405504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:55,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:55,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:55,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029891568] [2022-07-19 11:03:55,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:55,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:55,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:55,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:55,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:55,412 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) [2022-07-19 11:03:55,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:55,961 INFO L93 Difference]: Finished difference Result 4520 states and 6766 transitions. [2022-07-19 11:03:55,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:55,961 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 [2022-07-19 11:03:55,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:55,969 INFO L225 Difference]: With dead ends: 4520 [2022-07-19 11:03:55,969 INFO L226 Difference]: Without dead ends: 2390 [2022-07-19 11:03:55,971 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 [2022-07-19 11:03:55,971 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 46 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:55,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 605 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:03:55,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2022-07-19 11:03:56,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 2265. [2022-07-19 11:03:56,002 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) [2022-07-19 11:03:56,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 3395 transitions. [2022-07-19 11:03:56,004 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 3395 transitions. Word has length 291 [2022-07-19 11:03:56,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:56,004 INFO L495 AbstractCegarLoop]: Abstraction has 2265 states and 3395 transitions. [2022-07-19 11:03:56,005 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) [2022-07-19 11:03:56,005 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 3395 transitions. [2022-07-19 11:03:56,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-07-19 11:03:56,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:56,008 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] [2022-07-19 11:03:56,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-19 11:03:56,008 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:56,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:56,008 INFO L85 PathProgramCache]: Analyzing trace with hash -963563067, now seen corresponding path program 1 times [2022-07-19 11:03:56,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:56,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81043515] [2022-07-19 11:03:56,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:56,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 474 proven. 106 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-19 11:03:56,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:56,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81043515] [2022-07-19 11:03:56,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81043515] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:03:56,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462571406] [2022-07-19 11:03:56,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:56,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:03:56,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:03:56,129 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) [2022-07-19 11:03:56,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 11:03:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:57,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 11:03:57,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:03:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-07-19 11:03:57,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 11:03:57,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462571406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:57,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 11:03:57,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-19 11:03:57,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226875059] [2022-07-19 11:03:57,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:57,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:03:57,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:57,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:03:57,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:03:57,166 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) [2022-07-19 11:03:57,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:57,229 INFO L93 Difference]: Finished difference Result 5083 states and 7638 transitions. [2022-07-19 11:03:57,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:03:57,229 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 [2022-07-19 11:03:57,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:57,233 INFO L225 Difference]: With dead ends: 5083 [2022-07-19 11:03:57,234 INFO L226 Difference]: Without dead ends: 2841 [2022-07-19 11:03:57,236 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 [2022-07-19 11:03:57,236 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 [2022-07-19 11:03:57,236 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] [2022-07-19 11:03:57,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2022-07-19 11:03:57,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 2841. [2022-07-19 11:03:57,276 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) [2022-07-19 11:03:57,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 4267 transitions. [2022-07-19 11:03:57,278 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 4267 transitions. Word has length 293 [2022-07-19 11:03:57,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:57,278 INFO L495 AbstractCegarLoop]: Abstraction has 2841 states and 4267 transitions. [2022-07-19 11:03:57,279 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) [2022-07-19 11:03:57,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 4267 transitions. [2022-07-19 11:03:57,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-07-19 11:03:57,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:57,283 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] [2022-07-19 11:03:57,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 11:03:57,504 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 [2022-07-19 11:03:57,504 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:57,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:57,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1413839336, now seen corresponding path program 1 times [2022-07-19 11:03:57,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:57,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677478396] [2022-07-19 11:03:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:57,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:57,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 1019 proven. 0 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-07-19 11:03:57,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:57,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677478396] [2022-07-19 11:03:57,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677478396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:57,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:57,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:57,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438078367] [2022-07-19 11:03:57,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:57,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:57,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:57,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:57,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:57,661 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) [2022-07-19 11:03:58,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:58,386 INFO L93 Difference]: Finished difference Result 5830 states and 8717 transitions. [2022-07-19 11:03:58,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:58,387 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 [2022-07-19 11:03:58,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:58,392 INFO L225 Difference]: With dead ends: 5830 [2022-07-19 11:03:58,392 INFO L226 Difference]: Without dead ends: 3012 [2022-07-19 11:03:58,395 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 [2022-07-19 11:03:58,395 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 35 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:58,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 593 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:03:58,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2022-07-19 11:03:58,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 2916. [2022-07-19 11:03:58,439 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) [2022-07-19 11:03:58,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4352 transitions. [2022-07-19 11:03:58,442 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4352 transitions. Word has length 420 [2022-07-19 11:03:58,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:58,442 INFO L495 AbstractCegarLoop]: Abstraction has 2916 states and 4352 transitions. [2022-07-19 11:03:58,442 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) [2022-07-19 11:03:58,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4352 transitions. [2022-07-19 11:03:58,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-07-19 11:03:58,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:58,447 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] [2022-07-19 11:03:58,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-19 11:03:58,447 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:58,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:58,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1962379558, now seen corresponding path program 1 times [2022-07-19 11:03:58,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:58,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113201747] [2022-07-19 11:03:58,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:58,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 750 proven. 0 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-07-19 11:03:58,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:58,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113201747] [2022-07-19 11:03:58,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113201747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:58,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:58,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:03:58,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494451886] [2022-07-19 11:03:58,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:58,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:03:58,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:58,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:03:58,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:03:58,643 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) [2022-07-19 11:03:58,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:58,713 INFO L93 Difference]: Finished difference Result 6400 states and 9569 transitions. [2022-07-19 11:03:58,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:03:58,714 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 [2022-07-19 11:03:58,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:58,718 INFO L225 Difference]: With dead ends: 6400 [2022-07-19 11:03:58,718 INFO L226 Difference]: Without dead ends: 3507 [2022-07-19 11:03:58,721 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 [2022-07-19 11:03:58,722 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 [2022-07-19 11:03:58,722 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] [2022-07-19 11:03:58,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2022-07-19 11:03:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 3507. [2022-07-19 11:03:58,778 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) [2022-07-19 11:03:58,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 5242 transitions. [2022-07-19 11:03:58,783 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 5242 transitions. Word has length 420 [2022-07-19 11:03:58,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:58,784 INFO L495 AbstractCegarLoop]: Abstraction has 3507 states and 5242 transitions. [2022-07-19 11:03:58,784 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) [2022-07-19 11:03:58,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 5242 transitions. [2022-07-19 11:03:58,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-07-19 11:03:58,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:58,790 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] [2022-07-19 11:03:58,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-19 11:03:58,790 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:58,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:58,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1740827691, now seen corresponding path program 1 times [2022-07-19 11:03:58,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:58,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085860601] [2022-07-19 11:03:58,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:58,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 921 proven. 330 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-07-19 11:03:59,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:59,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085860601] [2022-07-19 11:03:59,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085860601] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:03:59,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002340957] [2022-07-19 11:03:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:59,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:03:59,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:03:59,270 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) [2022-07-19 11:03:59,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 11:04:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:00,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 1963 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-19 11:04:00,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:04:00,401 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:04:00,401 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 [2022-07-19 11:04:00,470 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-07-19 11:04:00,471 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 [2022-07-19 11:04:00,483 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 [2022-07-19 11:04:00,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-07-19 11:04:00,503 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 [2022-07-19 11:04:00,529 INFO L356 Elim1Store]: treesize reduction 60, result has 39.4 percent of original size [2022-07-19 11:04:00,530 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 [2022-07-19 11:04:00,569 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-07-19 11:04:00,571 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 [2022-07-19 11:04:00,750 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 11:04:00,751 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 [2022-07-19 11:04:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 916 proven. 51 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2022-07-19 11:04:00,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 11:04:00,943 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 [2022-07-19 11:04:00,953 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 [2022-07-19 11:04:05,018 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 [2022-07-19 11:04:05,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 922 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-07-19 11:04:05,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002340957] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 11:04:05,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 11:04:05,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 12] total 22 [2022-07-19 11:04:05,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488261782] [2022-07-19 11:04:05,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:05,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 11:04:05,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:05,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 11:04:05,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=376, Unknown=1, NotChecked=0, Total=462 [2022-07-19 11:04:05,026 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) [2022-07-19 11:04:07,610 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:09,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:17,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:17,699 INFO L93 Difference]: Finished difference Result 9613 states and 14334 transitions. [2022-07-19 11:04:17,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 11:04:17,699 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 [2022-07-19 11:04:17,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:17,705 INFO L225 Difference]: With dead ends: 9613 [2022-07-19 11:04:17,705 INFO L226 Difference]: Without dead ends: 6129 [2022-07-19 11:04:17,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 859 GetRequests, 835 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=121, Invalid=526, Unknown=3, NotChecked=0, Total=650 [2022-07-19 11:04:17,710 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 389 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s 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, 4.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:17,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 974 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 642 Invalid, 0 Unknown, 189 Unchecked, 4.6s Time] [2022-07-19 11:04:17,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6129 states. [2022-07-19 11:04:17,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6129 to 5339. [2022-07-19 11:04:17,806 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) [2022-07-19 11:04:17,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 8031 transitions. [2022-07-19 11:04:17,812 INFO L78 Accepts]: Start accepts. Automaton has 5339 states and 8031 transitions. Word has length 421 [2022-07-19 11:04:17,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:17,812 INFO L495 AbstractCegarLoop]: Abstraction has 5339 states and 8031 transitions. [2022-07-19 11:04:17,812 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) [2022-07-19 11:04:17,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states and 8031 transitions. [2022-07-19 11:04:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-07-19 11:04:17,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:17,819 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] [2022-07-19 11:04:17,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 11:04:18,038 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 [2022-07-19 11:04:18,038 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:18,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:18,039 INFO L85 PathProgramCache]: Analyzing trace with hash 165873834, now seen corresponding path program 1 times [2022-07-19 11:04:18,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:18,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513876581] [2022-07-19 11:04:18,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:18,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 970 proven. 0 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2022-07-19 11:04:18,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:18,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513876581] [2022-07-19 11:04:18,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513876581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:18,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:18,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:18,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376210749] [2022-07-19 11:04:18,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:18,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:18,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:18,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:18,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:18,192 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) [2022-07-19 11:04:19,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:20,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:20,013 INFO L93 Difference]: Finished difference Result 10819 states and 16241 transitions. [2022-07-19 11:04:20,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:20,014 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 [2022-07-19 11:04:20,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:20,020 INFO L225 Difference]: With dead ends: 10819 [2022-07-19 11:04:20,020 INFO L226 Difference]: Without dead ends: 5503 [2022-07-19 11:04:20,024 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 [2022-07-19 11:04:20,025 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 48 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:20,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 591 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 11:04:20,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5503 states. [2022-07-19 11:04:20,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5503 to 5339. [2022-07-19 11:04:20,131 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) [2022-07-19 11:04:20,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 8021 transitions. [2022-07-19 11:04:20,137 INFO L78 Accepts]: Start accepts. Automaton has 5339 states and 8021 transitions. Word has length 422 [2022-07-19 11:04:20,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:20,138 INFO L495 AbstractCegarLoop]: Abstraction has 5339 states and 8021 transitions. [2022-07-19 11:04:20,138 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) [2022-07-19 11:04:20,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states and 8021 transitions. [2022-07-19 11:04:20,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-07-19 11:04:20,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:20,146 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] [2022-07-19 11:04:20,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-19 11:04:20,146 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:20,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:20,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1014141511, now seen corresponding path program 1 times [2022-07-19 11:04:20,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:20,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203502052] [2022-07-19 11:04:20,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:20,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:20,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 1008 proven. 0 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2022-07-19 11:04:20,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:20,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203502052] [2022-07-19 11:04:20,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203502052] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:20,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:20,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:20,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833214645] [2022-07-19 11:04:20,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:20,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:20,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:20,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:20,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:20,356 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) [2022-07-19 11:04:21,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:21,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:21,853 INFO L93 Difference]: Finished difference Result 10813 states and 16215 transitions. [2022-07-19 11:04:21,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:21,853 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 [2022-07-19 11:04:21,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:21,858 INFO L225 Difference]: With dead ends: 10813 [2022-07-19 11:04:21,858 INFO L226 Difference]: Without dead ends: 5449 [2022-07-19 11:04:21,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:21,863 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 32 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:21,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 589 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 11:04:21,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2022-07-19 11:04:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 5297. [2022-07-19 11:04:21,980 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) [2022-07-19 11:04:21,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 7969 transitions. [2022-07-19 11:04:21,986 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 7969 transitions. Word has length 423 [2022-07-19 11:04:21,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:21,986 INFO L495 AbstractCegarLoop]: Abstraction has 5297 states and 7969 transitions. [2022-07-19 11:04:21,986 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) [2022-07-19 11:04:21,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 7969 transitions. [2022-07-19 11:04:21,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-07-19 11:04:21,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:21,995 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] [2022-07-19 11:04:21,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-19 11:04:21,995 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:21,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:21,996 INFO L85 PathProgramCache]: Analyzing trace with hash 739346400, now seen corresponding path program 1 times [2022-07-19 11:04:21,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:21,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112629097] [2022-07-19 11:04:21,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:21,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 997 proven. 0 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2022-07-19 11:04:22,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:22,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112629097] [2022-07-19 11:04:22,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112629097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:22,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:22,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:22,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100031488] [2022-07-19 11:04:22,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:22,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:22,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:22,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:22,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:22,151 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) [2022-07-19 11:04:23,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:23,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:23,736 INFO L93 Difference]: Finished difference Result 10723 states and 16105 transitions. [2022-07-19 11:04:23,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:23,737 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 [2022-07-19 11:04:23,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:23,743 INFO L225 Difference]: With dead ends: 10723 [2022-07-19 11:04:23,743 INFO L226 Difference]: Without dead ends: 5449 [2022-07-19 11:04:23,750 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 [2022-07-19 11:04:23,750 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 [2022-07-19 11:04:23,750 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] [2022-07-19 11:04:23,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2022-07-19 11:04:23,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 5297. [2022-07-19 11:04:23,887 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) [2022-07-19 11:04:23,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 7959 transitions. [2022-07-19 11:04:23,893 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 7959 transitions. Word has length 428 [2022-07-19 11:04:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:23,893 INFO L495 AbstractCegarLoop]: Abstraction has 5297 states and 7959 transitions. [2022-07-19 11:04:23,893 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) [2022-07-19 11:04:23,893 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 7959 transitions. [2022-07-19 11:04:23,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-07-19 11:04:23,900 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:23,900 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] [2022-07-19 11:04:23,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-19 11:04:23,900 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:23,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:23,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1766169954, now seen corresponding path program 1 times [2022-07-19 11:04:23,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:23,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748280153] [2022-07-19 11:04:23,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:23,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1689 backedges. 1006 proven. 0 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2022-07-19 11:04:24,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:24,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748280153] [2022-07-19 11:04:24,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748280153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:24,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:24,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:24,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089337603] [2022-07-19 11:04:24,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:24,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:24,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:24,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:24,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:24,073 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) [2022-07-19 11:04:25,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:25,089 INFO L93 Difference]: Finished difference Result 10683 states and 16035 transitions. [2022-07-19 11:04:25,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:25,090 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 [2022-07-19 11:04:25,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:25,095 INFO L225 Difference]: With dead ends: 10683 [2022-07-19 11:04:25,095 INFO L226 Difference]: Without dead ends: 5409 [2022-07-19 11:04:25,098 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 [2022-07-19 11:04:25,099 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 34 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:25,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 579 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:04:25,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5409 states. [2022-07-19 11:04:25,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5409 to 5297. [2022-07-19 11:04:25,206 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) [2022-07-19 11:04:25,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 7949 transitions. [2022-07-19 11:04:25,210 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 7949 transitions. Word has length 429 [2022-07-19 11:04:25,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:25,211 INFO L495 AbstractCegarLoop]: Abstraction has 5297 states and 7949 transitions. [2022-07-19 11:04:25,211 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) [2022-07-19 11:04:25,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 7949 transitions. [2022-07-19 11:04:25,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-07-19 11:04:25,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:25,216 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] [2022-07-19 11:04:25,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-19 11:04:25,216 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:25,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:25,217 INFO L85 PathProgramCache]: Analyzing trace with hash 880480681, now seen corresponding path program 1 times [2022-07-19 11:04:25,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:25,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424929018] [2022-07-19 11:04:25,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:25,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1757 backedges. 1004 proven. 0 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2022-07-19 11:04:25,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:25,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424929018] [2022-07-19 11:04:25,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424929018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:25,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:25,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:25,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26923615] [2022-07-19 11:04:25,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:25,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:25,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:25,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:25,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:25,351 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) [2022-07-19 11:04:27,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:27,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:27,750 INFO L93 Difference]: Finished difference Result 11137 states and 16683 transitions. [2022-07-19 11:04:27,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:27,751 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 [2022-07-19 11:04:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:27,757 INFO L225 Difference]: With dead ends: 11137 [2022-07-19 11:04:27,758 INFO L226 Difference]: Without dead ends: 5863 [2022-07-19 11:04:27,760 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 [2022-07-19 11:04:27,760 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 81 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:27,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 575 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 230 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 11:04:27,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5863 states. [2022-07-19 11:04:27,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5863 to 5369. [2022-07-19 11:04:27,844 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) [2022-07-19 11:04:27,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5369 states to 5369 states and 8047 transitions. [2022-07-19 11:04:27,848 INFO L78 Accepts]: Start accepts. Automaton has 5369 states and 8047 transitions. Word has length 437 [2022-07-19 11:04:27,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:27,848 INFO L495 AbstractCegarLoop]: Abstraction has 5369 states and 8047 transitions. [2022-07-19 11:04:27,848 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) [2022-07-19 11:04:27,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5369 states and 8047 transitions. [2022-07-19 11:04:27,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-07-19 11:04:27,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:27,853 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] [2022-07-19 11:04:27,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-19 11:04:27,854 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:27,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:27,854 INFO L85 PathProgramCache]: Analyzing trace with hash -197759248, now seen corresponding path program 1 times [2022-07-19 11:04:27,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:27,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733963701] [2022-07-19 11:04:27,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:27,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1757 backedges. 1004 proven. 0 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2022-07-19 11:04:27,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:27,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733963701] [2022-07-19 11:04:27,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733963701] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:27,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:27,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:27,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646795108] [2022-07-19 11:04:27,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:27,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:27,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:27,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:27,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:27,987 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) [2022-07-19 11:04:29,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:29,196 INFO L93 Difference]: Finished difference Result 11059 states and 16529 transitions. [2022-07-19 11:04:29,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:29,197 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 [2022-07-19 11:04:29,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:29,203 INFO L225 Difference]: With dead ends: 11059 [2022-07-19 11:04:29,203 INFO L226 Difference]: Without dead ends: 5713 [2022-07-19 11:04:29,210 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 [2022-07-19 11:04:29,211 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 82 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:29,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 619 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 11:04:29,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5713 states. [2022-07-19 11:04:29,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5713 to 5369. [2022-07-19 11:04:29,299 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) [2022-07-19 11:04:29,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5369 states to 5369 states and 8037 transitions. [2022-07-19 11:04:29,304 INFO L78 Accepts]: Start accepts. Automaton has 5369 states and 8037 transitions. Word has length 438 [2022-07-19 11:04:29,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:29,304 INFO L495 AbstractCegarLoop]: Abstraction has 5369 states and 8037 transitions. [2022-07-19 11:04:29,304 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) [2022-07-19 11:04:29,304 INFO L276 IsEmpty]: Start isEmpty. Operand 5369 states and 8037 transitions. [2022-07-19 11:04:29,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-07-19 11:04:29,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:29,309 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] [2022-07-19 11:04:29,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-19 11:04:29,310 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:29,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:29,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1286524218, now seen corresponding path program 1 times [2022-07-19 11:04:29,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:29,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901211629] [2022-07-19 11:04:29,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:29,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1879 backedges. 1120 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2022-07-19 11:04:29,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:29,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901211629] [2022-07-19 11:04:29,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901211629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:29,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:29,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:29,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065977396] [2022-07-19 11:04:29,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:29,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:29,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:29,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:29,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:29,490 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) [2022-07-19 11:04:29,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:29,912 INFO L93 Difference]: Finished difference Result 10757 states and 16077 transitions. [2022-07-19 11:04:29,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:29,912 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 [2022-07-19 11:04:29,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:29,917 INFO L225 Difference]: With dead ends: 10757 [2022-07-19 11:04:29,918 INFO L226 Difference]: Without dead ends: 5411 [2022-07-19 11:04:29,921 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 [2022-07-19 11:04:29,922 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 14 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:29,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 559 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 11:04:29,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2022-07-19 11:04:30,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 5379. [2022-07-19 11:04:30,010 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) [2022-07-19 11:04:30,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 8019 transitions. [2022-07-19 11:04:30,018 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 8019 transitions. Word has length 444 [2022-07-19 11:04:30,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:30,018 INFO L495 AbstractCegarLoop]: Abstraction has 5379 states and 8019 transitions. [2022-07-19 11:04:30,018 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) [2022-07-19 11:04:30,019 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 8019 transitions. [2022-07-19 11:04:30,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-07-19 11:04:30,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:30,025 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] [2022-07-19 11:04:30,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-19 11:04:30,025 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:30,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:30,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2012653471, now seen corresponding path program 1 times [2022-07-19 11:04:30,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:30,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657163683] [2022-07-19 11:04:30,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:30,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:30,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1879 backedges. 1166 proven. 0 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2022-07-19 11:04:30,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:30,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657163683] [2022-07-19 11:04:30,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657163683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:30,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:30,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:30,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732238631] [2022-07-19 11:04:30,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:30,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:30,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:30,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:30,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:30,196 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) [2022-07-19 11:04:31,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:32,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:32,244 INFO L93 Difference]: Finished difference Result 11079 states and 16473 transitions. [2022-07-19 11:04:32,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:32,245 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 [2022-07-19 11:04:32,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:32,251 INFO L225 Difference]: With dead ends: 11079 [2022-07-19 11:04:32,252 INFO L226 Difference]: Without dead ends: 5723 [2022-07-19 11:04:32,256 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 [2022-07-19 11:04:32,256 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 63 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:32,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 575 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 11:04:32,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5723 states. [2022-07-19 11:04:32,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5723 to 5379. [2022-07-19 11:04:32,391 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) [2022-07-19 11:04:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 8009 transitions. [2022-07-19 11:04:32,397 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 8009 transitions. Word has length 445 [2022-07-19 11:04:32,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:32,398 INFO L495 AbstractCegarLoop]: Abstraction has 5379 states and 8009 transitions. [2022-07-19 11:04:32,398 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) [2022-07-19 11:04:32,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 8009 transitions. [2022-07-19 11:04:32,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-07-19 11:04:32,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:32,404 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] [2022-07-19 11:04:32,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-19 11:04:32,404 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:32,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:32,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2093997469, now seen corresponding path program 1 times [2022-07-19 11:04:32,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:32,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589934369] [2022-07-19 11:04:32,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:32,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:32,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1888 backedges. 1175 proven. 0 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2022-07-19 11:04:32,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:32,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589934369] [2022-07-19 11:04:32,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589934369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:32,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:32,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:32,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125111247] [2022-07-19 11:04:32,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:32,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:32,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:32,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:32,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:32,573 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) [2022-07-19 11:04:34,164 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 [] [2022-07-19 11:04:34,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:34,493 INFO L93 Difference]: Finished difference Result 11059 states and 16433 transitions. [2022-07-19 11:04:34,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:34,494 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 [2022-07-19 11:04:34,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:34,499 INFO L225 Difference]: With dead ends: 11059 [2022-07-19 11:04:34,499 INFO L226 Difference]: Without dead ends: 5703 [2022-07-19 11:04:34,502 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 [2022-07-19 11:04:34,502 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 60 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:34,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 577 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 11:04:34,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2022-07-19 11:04:34,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5379. [2022-07-19 11:04:34,591 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) [2022-07-19 11:04:34,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 7999 transitions. [2022-07-19 11:04:34,596 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 7999 transitions. Word has length 446 [2022-07-19 11:04:34,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:34,596 INFO L495 AbstractCegarLoop]: Abstraction has 5379 states and 7999 transitions. [2022-07-19 11:04:34,597 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) [2022-07-19 11:04:34,597 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 7999 transitions. [2022-07-19 11:04:34,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-07-19 11:04:34,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:34,602 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] [2022-07-19 11:04:34,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-19 11:04:34,602 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:34,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:34,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1999294986, now seen corresponding path program 1 times [2022-07-19 11:04:34,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:34,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314694883] [2022-07-19 11:04:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:34,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 1148 proven. 0 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2022-07-19 11:04:34,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:34,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314694883] [2022-07-19 11:04:34,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314694883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:34,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:34,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:34,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079867659] [2022-07-19 11:04:34,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:34,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:34,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:34,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:34,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:34,756 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) [2022-07-19 11:04:36,022 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 [] [2022-07-19 11:04:36,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:36,326 INFO L93 Difference]: Finished difference Result 11059 states and 16413 transitions. [2022-07-19 11:04:36,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:36,327 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 [2022-07-19 11:04:36,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:36,332 INFO L225 Difference]: With dead ends: 11059 [2022-07-19 11:04:36,332 INFO L226 Difference]: Without dead ends: 5703 [2022-07-19 11:04:36,335 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 [2022-07-19 11:04:36,336 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 62 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:36,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 577 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 11:04:36,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2022-07-19 11:04:36,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5379. [2022-07-19 11:04:36,426 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) [2022-07-19 11:04:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 7989 transitions. [2022-07-19 11:04:36,431 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 7989 transitions. Word has length 448 [2022-07-19 11:04:36,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:36,431 INFO L495 AbstractCegarLoop]: Abstraction has 5379 states and 7989 transitions. [2022-07-19 11:04:36,431 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) [2022-07-19 11:04:36,432 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 7989 transitions. [2022-07-19 11:04:36,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2022-07-19 11:04:36,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:36,437 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] [2022-07-19 11:04:36,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-19 11:04:36,437 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:36,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:36,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1847149926, now seen corresponding path program 1 times [2022-07-19 11:04:36,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:36,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208466518] [2022-07-19 11:04:36,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:36,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1870 backedges. 1157 proven. 0 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2022-07-19 11:04:36,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:36,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208466518] [2022-07-19 11:04:36,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208466518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:36,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:36,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:36,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899534459] [2022-07-19 11:04:36,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:36,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:36,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:36,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:36,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:36,685 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) [2022-07-19 11:04:38,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:38,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:38,828 INFO L93 Difference]: Finished difference Result 10979 states and 16263 transitions. [2022-07-19 11:04:38,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:38,829 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 [2022-07-19 11:04:38,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:38,835 INFO L225 Difference]: With dead ends: 10979 [2022-07-19 11:04:38,835 INFO L226 Difference]: Without dead ends: 5623 [2022-07-19 11:04:38,845 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 [2022-07-19 11:04:38,845 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 51 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:38,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 595 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 11:04:38,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5623 states. [2022-07-19 11:04:38,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5623 to 5379. [2022-07-19 11:04:38,986 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) [2022-07-19 11:04:38,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 7979 transitions. [2022-07-19 11:04:38,992 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 7979 transitions. Word has length 449 [2022-07-19 11:04:38,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:38,992 INFO L495 AbstractCegarLoop]: Abstraction has 5379 states and 7979 transitions. [2022-07-19 11:04:38,992 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) [2022-07-19 11:04:38,992 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 7979 transitions. [2022-07-19 11:04:39,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2022-07-19 11:04:39,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:39,007 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] [2022-07-19 11:04:39,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-19 11:04:39,008 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:39,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:39,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1852972643, now seen corresponding path program 1 times [2022-07-19 11:04:39,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:39,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65341190] [2022-07-19 11:04:39,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:39,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 1086 proven. 0 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-07-19 11:04:39,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:39,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65341190] [2022-07-19 11:04:39,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65341190] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:39,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:39,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 11:04:39,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308631286] [2022-07-19 11:04:39,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:39,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 11:04:39,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:39,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 11:04:39,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:39,190 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) [2022-07-19 11:04:40,788 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 [] [2022-07-19 11:04:41,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:41,380 INFO L93 Difference]: Finished difference Result 13569 states and 20138 transitions. [2022-07-19 11:04:41,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 11:04:41,382 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 [2022-07-19 11:04:41,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:41,391 INFO L225 Difference]: With dead ends: 13569 [2022-07-19 11:04:41,391 INFO L226 Difference]: Without dead ends: 8213 [2022-07-19 11:04:41,409 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 [2022-07-19 11:04:41,412 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 129 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:41,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 924 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 11:04:41,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8213 states. [2022-07-19 11:04:41,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8213 to 6308. [2022-07-19 11:04:41,585 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) [2022-07-19 11:04:41,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6308 states to 6308 states and 9386 transitions. [2022-07-19 11:04:41,594 INFO L78 Accepts]: Start accepts. Automaton has 6308 states and 9386 transitions. Word has length 450 [2022-07-19 11:04:41,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:41,594 INFO L495 AbstractCegarLoop]: Abstraction has 6308 states and 9386 transitions. [2022-07-19 11:04:41,594 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) [2022-07-19 11:04:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 6308 states and 9386 transitions. [2022-07-19 11:04:41,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-07-19 11:04:41,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:41,622 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] [2022-07-19 11:04:41,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-19 11:04:41,622 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:41,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:41,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1946132669, now seen corresponding path program 1 times [2022-07-19 11:04:41,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:41,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880296803] [2022-07-19 11:04:41,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:41,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:41,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1899 backedges. 1140 proven. 78 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2022-07-19 11:04:41,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:41,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880296803] [2022-07-19 11:04:41,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880296803] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:04:41,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097791962] [2022-07-19 11:04:41,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:41,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:04:41,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:04:41,850 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) [2022-07-19 11:04:41,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 11:04:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:43,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 2129 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 11:04:43,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:04:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1899 backedges. 1356 proven. 0 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2022-07-19 11:04:43,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 11:04:43,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097791962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:43,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 11:04:43,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-19 11:04:43,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854546497] [2022-07-19 11:04:43,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:43,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:43,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:43,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:43,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:04:43,383 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) [2022-07-19 11:04:43,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:43,540 INFO L93 Difference]: Finished difference Result 13654 states and 20333 transitions. [2022-07-19 11:04:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:43,540 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 [2022-07-19 11:04:43,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:43,547 INFO L225 Difference]: With dead ends: 13654 [2022-07-19 11:04:43,548 INFO L226 Difference]: Without dead ends: 7369 [2022-07-19 11:04:43,553 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 [2022-07-19 11:04:43,553 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 [2022-07-19 11:04:43,554 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] [2022-07-19 11:04:43,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7369 states. [2022-07-19 11:04:43,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7369 to 7369. [2022-07-19 11:04:43,760 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) [2022-07-19 11:04:43,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7369 states to 7369 states and 10970 transitions. [2022-07-19 11:04:43,766 INFO L78 Accepts]: Start accepts. Automaton has 7369 states and 10970 transitions. Word has length 451 [2022-07-19 11:04:43,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:43,767 INFO L495 AbstractCegarLoop]: Abstraction has 7369 states and 10970 transitions. [2022-07-19 11:04:43,767 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) [2022-07-19 11:04:43,767 INFO L276 IsEmpty]: Start isEmpty. Operand 7369 states and 10970 transitions. [2022-07-19 11:04:43,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-07-19 11:04:43,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:43,774 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] [2022-07-19 11:04:43,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 11:04:43,998 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 [2022-07-19 11:04:43,998 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:43,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:43,998 INFO L85 PathProgramCache]: Analyzing trace with hash 306545066, now seen corresponding path program 1 times [2022-07-19 11:04:43,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:43,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422066105] [2022-07-19 11:04:43,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:43,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:44,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 1095 proven. 68 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2022-07-19 11:04:44,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:44,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422066105] [2022-07-19 11:04:44,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422066105] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:04:44,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561187119] [2022-07-19 11:04:44,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:44,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:04:44,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:04:44,148 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) [2022-07-19 11:04:44,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 11:04:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:45,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 2089 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 11:04:45,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:04:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 1322 proven. 0 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2022-07-19 11:04:45,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 11:04:45,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561187119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:45,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 11:04:45,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-19 11:04:45,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061485624] [2022-07-19 11:04:45,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:45,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:45,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:45,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:45,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:04:45,574 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) [2022-07-19 11:04:45,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:45,801 INFO L93 Difference]: Finished difference Result 15776 states and 23501 transitions. [2022-07-19 11:04:45,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:45,801 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 [2022-07-19 11:04:45,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:45,808 INFO L225 Difference]: With dead ends: 15776 [2022-07-19 11:04:45,808 INFO L226 Difference]: Without dead ends: 8430 [2022-07-19 11:04:45,812 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 [2022-07-19 11:04:45,812 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 [2022-07-19 11:04:45,813 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] [2022-07-19 11:04:45,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8430 states. [2022-07-19 11:04:45,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8430 to 8430. [2022-07-19 11:04:45,973 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) [2022-07-19 11:04:45,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8430 states to 8430 states and 12556 transitions. [2022-07-19 11:04:45,980 INFO L78 Accepts]: Start accepts. Automaton has 8430 states and 12556 transitions. Word has length 455 [2022-07-19 11:04:45,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:45,981 INFO L495 AbstractCegarLoop]: Abstraction has 8430 states and 12556 transitions. [2022-07-19 11:04:45,981 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) [2022-07-19 11:04:45,981 INFO L276 IsEmpty]: Start isEmpty. Operand 8430 states and 12556 transitions. [2022-07-19 11:04:45,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2022-07-19 11:04:45,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:45,988 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] [2022-07-19 11:04:46,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 11:04:46,189 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 [2022-07-19 11:04:46,190 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:46,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:46,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1015527261, now seen corresponding path program 1 times [2022-07-19 11:04:46,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:46,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53954122] [2022-07-19 11:04:46,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:46,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:46,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1959 backedges. 1114 proven. 0 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2022-07-19 11:04:46,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:46,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53954122] [2022-07-19 11:04:46,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53954122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:46,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:46,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:46,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065861529] [2022-07-19 11:04:46,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:46,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:46,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:46,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:46,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:46,356 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) [2022-07-19 11:04:47,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:47,474 INFO L93 Difference]: Finished difference Result 17015 states and 25307 transitions. [2022-07-19 11:04:47,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:47,475 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 [2022-07-19 11:04:47,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:47,482 INFO L225 Difference]: With dead ends: 17015 [2022-07-19 11:04:47,483 INFO L226 Difference]: Without dead ends: 8608 [2022-07-19 11:04:47,487 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 [2022-07-19 11:04:47,487 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 36 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:47,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 577 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:04:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8608 states. [2022-07-19 11:04:47,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8608 to 8430. [2022-07-19 11:04:47,646 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) [2022-07-19 11:04:47,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8430 states to 8430 states and 12540 transitions. [2022-07-19 11:04:47,654 INFO L78 Accepts]: Start accepts. Automaton has 8430 states and 12540 transitions. Word has length 465 [2022-07-19 11:04:47,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:47,654 INFO L495 AbstractCegarLoop]: Abstraction has 8430 states and 12540 transitions. [2022-07-19 11:04:47,654 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) [2022-07-19 11:04:47,654 INFO L276 IsEmpty]: Start isEmpty. Operand 8430 states and 12540 transitions. [2022-07-19 11:04:47,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2022-07-19 11:04:47,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:47,662 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] [2022-07-19 11:04:47,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-07-19 11:04:47,662 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:47,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:47,663 INFO L85 PathProgramCache]: Analyzing trace with hash -599888121, now seen corresponding path program 1 times [2022-07-19 11:04:47,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:47,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117863045] [2022-07-19 11:04:47,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:47,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1978 backedges. 1127 proven. 0 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-07-19 11:04:47,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:47,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117863045] [2022-07-19 11:04:47,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117863045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:47,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:47,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:47,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769647595] [2022-07-19 11:04:47,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:47,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:47,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:47,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:47,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:47,849 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) [2022-07-19 11:04:49,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:50,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:50,224 INFO L93 Difference]: Finished difference Result 16951 states and 25193 transitions. [2022-07-19 11:04:50,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:50,225 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 [2022-07-19 11:04:50,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:50,234 INFO L225 Difference]: With dead ends: 16951 [2022-07-19 11:04:50,235 INFO L226 Difference]: Without dead ends: 8544 [2022-07-19 11:04:50,241 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 [2022-07-19 11:04:50,242 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 30 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 4 mSolverCounterUnsat, 0 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, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:50,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 569 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 11:04:50,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8544 states. [2022-07-19 11:04:50,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8544 to 8430. [2022-07-19 11:04:50,414 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) [2022-07-19 11:04:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8430 states to 8430 states and 12524 transitions. [2022-07-19 11:04:50,423 INFO L78 Accepts]: Start accepts. Automaton has 8430 states and 12524 transitions. Word has length 467 [2022-07-19 11:04:50,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:50,424 INFO L495 AbstractCegarLoop]: Abstraction has 8430 states and 12524 transitions. [2022-07-19 11:04:50,424 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) [2022-07-19 11:04:50,424 INFO L276 IsEmpty]: Start isEmpty. Operand 8430 states and 12524 transitions. [2022-07-19 11:04:50,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-07-19 11:04:50,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:50,433 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] [2022-07-19 11:04:50,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-07-19 11:04:50,433 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:50,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:50,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1585745039, now seen corresponding path program 1 times [2022-07-19 11:04:50,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:50,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281433917] [2022-07-19 11:04:50,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:50,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 1128 proven. 338 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2022-07-19 11:04:51,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:51,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281433917] [2022-07-19 11:04:51,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281433917] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:04:51,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335599167] [2022-07-19 11:04:51,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:51,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:04:51,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:04:51,056 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) [2022-07-19 11:04:51,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 11:04:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:52,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 2147 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-19 11:04:52,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:04:52,618 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:04:52,619 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 [2022-07-19 11:04:52,672 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 11:04:52,672 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 [2022-07-19 11:04:52,693 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 [2022-07-19 11:04:52,748 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 11:04:52,749 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 [2022-07-19 11:04:52,773 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 [2022-07-19 11:04:52,776 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 [2022-07-19 11:04:52,792 INFO L356 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-07-19 11:04:52,793 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 [2022-07-19 11:04:52,860 INFO L356 Elim1Store]: treesize reduction 66, result has 30.5 percent of original size [2022-07-19 11:04:52,860 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 [2022-07-19 11:04:52,925 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:04:52,925 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 [2022-07-19 11:04:52,970 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 [2022-07-19 11:04:52,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 1304 proven. 142 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2022-07-19 11:04:52,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 11:04:53,071 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 [2022-07-19 11:04:53,073 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 [2022-07-19 11:04:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 1329 proven. 0 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2022-07-19 11:04:54,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335599167] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 11:04:54,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 11:04:54,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14, 9] total 22 [2022-07-19 11:04:54,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477038669] [2022-07-19 11:04:54,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:54,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 11:04:54,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:54,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 11:04:54,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=407, Unknown=1, NotChecked=0, Total=462 [2022-07-19 11:04:54,949 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) [2022-07-19 11:04:55,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:55,400 INFO L93 Difference]: Finished difference Result 18546 states and 27714 transitions. [2022-07-19 11:04:55,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 11:04:55,401 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 [2022-07-19 11:04:55,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:55,425 INFO L225 Difference]: With dead ends: 18546 [2022-07-19 11:04:55,426 INFO L226 Difference]: Without dead ends: 10139 [2022-07-19 11:04:55,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 956 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=60, Invalid=445, Unknown=1, NotChecked=0, Total=506 [2022-07-19 11:04:55,440 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, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:55,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 663 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 125 Unchecked, 0.2s Time] [2022-07-19 11:04:55,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10139 states. [2022-07-19 11:04:55,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10139 to 8899. [2022-07-19 11:04:55,638 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) [2022-07-19 11:04:55,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8899 states to 8899 states and 13343 transitions. [2022-07-19 11:04:55,648 INFO L78 Accepts]: Start accepts. Automaton has 8899 states and 13343 transitions. Word has length 479 [2022-07-19 11:04:55,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:55,649 INFO L495 AbstractCegarLoop]: Abstraction has 8899 states and 13343 transitions. [2022-07-19 11:04:55,649 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) [2022-07-19 11:04:55,649 INFO L276 IsEmpty]: Start isEmpty. Operand 8899 states and 13343 transitions. [2022-07-19 11:04:55,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-07-19 11:04:55,658 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:55,658 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] [2022-07-19 11:04:55,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 11:04:55,883 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 [2022-07-19 11:04:55,884 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:55,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:55,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1828332653, now seen corresponding path program 1 times [2022-07-19 11:04:55,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:55,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161054064] [2022-07-19 11:04:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:55,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:56,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2136 trivial. 0 not checked. [2022-07-19 11:04:56,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:56,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161054064] [2022-07-19 11:04:56,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161054064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:56,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:56,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 11:04:56,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010053723] [2022-07-19 11:04:56,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:56,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 11:04:56,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:56,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 11:04:56,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:56,410 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) [2022-07-19 11:04:57,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:57,926 INFO L93 Difference]: Finished difference Result 17795 states and 26682 transitions. [2022-07-19 11:04:57,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 11:04:57,926 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 [2022-07-19 11:04:57,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:57,935 INFO L225 Difference]: With dead ends: 17795 [2022-07-19 11:04:57,936 INFO L226 Difference]: Without dead ends: 8899 [2022-07-19 11:04:57,942 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 [2022-07-19 11:04:57,943 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 7 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:57,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 679 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 11:04:57,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8899 states. [2022-07-19 11:04:58,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8899 to 8899. [2022-07-19 11:04:58,126 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) [2022-07-19 11:04:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8899 states to 8899 states and 13342 transitions. [2022-07-19 11:04:58,137 INFO L78 Accepts]: Start accepts. Automaton has 8899 states and 13342 transitions. Word has length 479 [2022-07-19 11:04:58,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:58,137 INFO L495 AbstractCegarLoop]: Abstraction has 8899 states and 13342 transitions. [2022-07-19 11:04:58,137 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) [2022-07-19 11:04:58,137 INFO L276 IsEmpty]: Start isEmpty. Operand 8899 states and 13342 transitions. [2022-07-19 11:04:58,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-07-19 11:04:58,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:58,147 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] [2022-07-19 11:04:58,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-07-19 11:04:58,148 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:58,148 INFO L85 PathProgramCache]: Analyzing trace with hash 656047471, now seen corresponding path program 1 times [2022-07-19 11:04:58,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:58,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919516607] [2022-07-19 11:04:58,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:58,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 1082 proven. 225 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2022-07-19 11:04:58,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:58,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919516607] [2022-07-19 11:04:58,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919516607] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:04:58,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412619568] [2022-07-19 11:04:58,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:58,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:04:58,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:04:58,936 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) [2022-07-19 11:04:58,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 11:05:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:00,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 2176 conjuncts, 153 conjunts are in the unsatisfiable core [2022-07-19 11:05:00,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:05:00,452 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:00,452 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 [2022-07-19 11:05:00,533 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-07-19 11:05:00,533 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 [2022-07-19 11:05:00,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 11:05:00,546 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 [2022-07-19 11:05:00,588 INFO L356 Elim1Store]: treesize reduction 31, result has 44.6 percent of original size [2022-07-19 11:05:00,588 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 [2022-07-19 11:05:00,606 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-19 11:05:00,607 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 [2022-07-19 11:05:00,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:00,639 INFO L356 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-07-19 11:05:00,640 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 [2022-07-19 11:05:00,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:00,724 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 154 treesize of output 141 [2022-07-19 11:05:00,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:00,728 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 154 treesize of output 135 [2022-07-19 11:05:00,829 INFO L356 Elim1Store]: treesize reduction 344, result has 22.5 percent of original size [2022-07-19 11:05:00,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 154 treesize of output 183 [2022-07-19 11:05:02,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:02,209 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 236 treesize of output 217 [2022-07-19 11:05:02,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:02,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:02,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:02,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:02,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:02,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:02,267 INFO L356 Elim1Store]: treesize reduction 270, result has 22.6 percent of original size [2022-07-19 11:05:02,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 232 treesize of output 213 [2022-07-19 11:05:02,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:02,273 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 259 treesize of output 210 [2022-07-19 11:05:04,207 INFO L356 Elim1Store]: treesize reduction 106, result has 42.7 percent of original size [2022-07-19 11:05:04,208 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 213 treesize of output 177 [2022-07-19 11:05:04,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:04,438 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 85 treesize of output 78 [2022-07-19 11:05:04,445 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:04,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 66 [2022-07-19 11:05:04,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:04,470 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 85 treesize of output 66 [2022-07-19 11:05:04,480 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:04,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 78 [2022-07-19 11:05:04,919 INFO L356 Elim1Store]: treesize reduction 72, result has 41.5 percent of original size [2022-07-19 11:05:04,920 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 134 treesize of output 147 [2022-07-19 11:05:04,950 INFO L356 Elim1Store]: treesize reduction 52, result has 42.9 percent of original size [2022-07-19 11:05:04,950 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 129 treesize of output 124 [2022-07-19 11:05:05,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:05,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:05,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:05,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:05,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:05,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:05,086 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 113 treesize of output 101 [2022-07-19 11:05:05,105 INFO L356 Elim1Store]: treesize reduction 154, result has 15.4 percent of original size [2022-07-19 11:05:05,106 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 113 treesize of output 113 [2022-07-19 11:05:05,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:05,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:05,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:05,956 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 108 treesize of output 92 [2022-07-19 11:05:05,973 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-07-19 11:05:05,974 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 108 treesize of output 104 [2022-07-19 11:05:06,040 INFO L356 Elim1Store]: treesize reduction 72, result has 41.5 percent of original size [2022-07-19 11:05:06,040 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 188 treesize of output 183 [2022-07-19 11:05:06,073 INFO L356 Elim1Store]: treesize reduction 52, result has 42.9 percent of original size [2022-07-19 11:05:06,073 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 165 treesize of output 148 [2022-07-19 11:05:06,109 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 [2022-07-19 11:05:06,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:06,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:06,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:06,330 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 161 treesize of output 145 [2022-07-19 11:05:06,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:06,354 INFO L356 Elim1Store]: treesize reduction 77, result has 35.8 percent of original size [2022-07-19 11:05:06,355 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 161 treesize of output 185 [2022-07-19 11:05:06,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:06,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:06,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:06,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 152 [2022-07-19 11:05:07,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:07,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:07,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:07,695 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 208 treesize of output 180 [2022-07-19 11:05:07,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:07,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:07,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:07,721 INFO L356 Elim1Store]: treesize reduction 127, result has 14.2 percent of original size [2022-07-19 11:05:07,721 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 204 treesize of output 191 [2022-07-19 11:05:07,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:07,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:07,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:07,728 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 192 treesize of output 158 [2022-07-19 11:05:10,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,481 INFO L356 Elim1Store]: treesize reduction 161, result has 21.1 percent of original size [2022-07-19 11:05:10,482 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 [2022-07-19 11:05:10,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,498 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 [2022-07-19 11:05:10,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,526 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 [2022-07-19 11:05:10,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,661 INFO L356 Elim1Store]: treesize reduction 131, result has 25.6 percent of original size [2022-07-19 11:05:10,661 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 [2022-07-19 11:05:10,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,715 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 [2022-07-19 11:05:10,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:10,722 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 [2022-07-19 11:05:11,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:11,457 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 [2022-07-19 11:05:11,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:11,460 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 [2022-07-19 11:05:11,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:11,480 INFO L356 Elim1Store]: treesize reduction 55, result has 27.6 percent of original size [2022-07-19 11:05:11,480 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 [2022-07-19 11:05:11,571 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-19 11:05:11,572 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 [2022-07-19 11:05:11,623 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 [2022-07-19 11:05:11,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:11,629 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 [2022-07-19 11:05:11,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 1202 proven. 876 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-07-19 11:05:11,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 11:05:11,732 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 [2022-07-19 11:05:11,919 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 [2022-07-19 11:05:11,924 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_23814 (Array Int Int)) (v_arrayElimCell_114 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 (select |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse0 8448)) v_arrayElimCell_114 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 [2022-07-19 11:05:11,933 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_114 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 (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_114 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 [2022-07-19 11:05:11,957 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_23808 Int) (v_ArrVal_23809 Int) (v_ArrVal_23814 (Array Int Int)) (v_arrayElimCell_114 Int) (v_ArrVal_23805 Int)) (let ((.cse1 (let ((.cse4 (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 176))) (let ((.cse3 (select (select |c_#memory_$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_114 v_ArrVal_23814) |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse2)) 8640)))))) is different from false [2022-07-19 11:05:12,176 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_23808 Int) (v_ArrVal_23809 Int) (v_ArrVal_23814 (Array Int Int)) (v_ArrVal_23802 Int) (v_arrayElimCell_114 Int) (v_ArrVal_23805 Int)) (let ((.cse3 (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 64))) (let ((.cse1 (let ((.cse6 (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 176))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse3 v_ArrVal_23802))) (.cse5 (select (select |c_#memory_$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_114 v_ArrVal_23814) |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse2)) 8640))))))) is different from false [2022-07-19 11:05:13,890 INFO L356 Elim1Store]: treesize reduction 5781, result has 4.7 percent of original size [2022-07-19 11:05:13,891 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 [2022-07-19 11:05:13,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:13,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 11:05:13,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 11:05:14,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 11:05:14,021 INFO L356 Elim1Store]: treesize reduction 181, result has 30.9 percent of original size [2022-07-19 11:05:14,022 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 [2022-07-19 11:05:14,028 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