./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-commit-tester/main2_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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/ldv-commit-tester/main2_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash c2255c939c83cd7eedc3c7f637d06dea23ce3a82d37039af88ba670fb379695f --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 16:13:48,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 16:13:48,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 16:13:48,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 16:13:48,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 16:13:48,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 16:13:48,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 16:13:48,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 16:13:48,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 16:13:48,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 16:13:48,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 16:13:48,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 16:13:48,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 16:13:48,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 16:13:48,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 16:13:48,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 16:13:48,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 16:13:48,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 16:13:48,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 16:13:48,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 16:13:48,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 16:13:48,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 16:13:48,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 16:13:48,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 16:13:48,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 16:13:48,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 16:13:48,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 16:13:48,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 16:13:48,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 16:13:48,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 16:13:48,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 16:13:48,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 16:13:48,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 16:13:48,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 16:13:48,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 16:13:48,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 16:13:48,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 16:13:48,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 16:13:48,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 16:13:48,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 16:13:48,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 16:13:48,995 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 16:13:49,018 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 16:13:49,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 16:13:49,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 16:13:49,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 16:13:49,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 16:13:49,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 16:13:49,020 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 16:13:49,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 16:13:49,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 16:13:49,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 16:13:49,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 16:13:49,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 16:13:49,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 16:13:49,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 16:13:49,022 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 16:13:49,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 16:13:49,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 16:13:49,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 16:13:49,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 16:13:49,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 16:13:49,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 16:13:49,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 16:13:49,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 16:13:49,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 16:13:49,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 16:13:49,024 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 16:13:49,024 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 16:13:49,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 16:13:49,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 16:13:49,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2255c939c83cd7eedc3c7f637d06dea23ce3a82d37039af88ba670fb379695f [2021-11-02 16:13:49,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 16:13:49,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 16:13:49,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 16:13:49,247 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 16:13:49,248 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 16:13:49,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/main2_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i [2021-11-02 16:13:49,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fcaed3bb/afac6e82dea441f68d0e091bad604933/FLAG27dcd9956 [2021-11-02 16:13:49,958 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 16:13:49,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/main2_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i [2021-11-02 16:13:50,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fcaed3bb/afac6e82dea441f68d0e091bad604933/FLAG27dcd9956 [2021-11-02 16:13:50,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fcaed3bb/afac6e82dea441f68d0e091bad604933 [2021-11-02 16:13:50,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 16:13:50,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 16:13:50,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 16:13:50,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 16:13:50,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 16:13:50,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 04:13:50" (1/1) ... [2021-11-02 16:13:50,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b183727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:13:50, skipping insertion in model container [2021-11-02 16:13:50,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 04:13:50" (1/1) ... [2021-11-02 16:13:50,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 16:13:50,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 16:13:52,880 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/main2_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i[341143,341156] [2021-11-02 16:13:53,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 16:13:53,075 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 16:13:53,460 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/main2_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i[341143,341156] [2021-11-02 16:13:53,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 16:13:53,617 INFO L208 MainTranslator]: Completed translation [2021-11-02 16:13:53,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:13:53 WrapperNode [2021-11-02 16:13:53,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 16:13:53,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 16:13:53,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 16:13:53,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 16:13:53,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:13:53" (1/1) ... [2021-11-02 16:13:53,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:13:53" (1/1) ... [2021-11-02 16:13:53,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 16:13:53,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 16:13:53,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 16:13:53,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 16:13:53,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:13:53" (1/1) ... [2021-11-02 16:13:53,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:13:53" (1/1) ... [2021-11-02 16:13:53,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:13:53" (1/1) ... [2021-11-02 16:13:53,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:13:53" (1/1) ... [2021-11-02 16:13:54,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:13:53" (1/1) ... [2021-11-02 16:13:54,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:13:53" (1/1) ... [2021-11-02 16:13:54,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:13:53" (1/1) ... [2021-11-02 16:13:54,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 16:13:54,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 16:13:54,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 16:13:54,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 16:13:54,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:13:53" (1/1) ... [2021-11-02 16:13:54,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 16:13:54,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 16:13:54,095 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) [2021-11-02 16:13:54,118 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 [2021-11-02 16:13:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-02 16:13:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 16:13:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 16:13:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 16:13:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 16:13:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 16:13:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 16:13:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 16:13:54,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 16:13:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 16:13:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 16:13:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 16:13:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 16:13:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 16:13:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 16:13:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 16:16:44,678 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 16:16:44,678 INFO L299 CfgBuilder]: Removed 344 assume(true) statements. [2021-11-02 16:16:44,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 04:16:44 BoogieIcfgContainer [2021-11-02 16:16:44,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 16:16:44,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 16:16:44,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 16:16:44,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 16:16:44,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 04:13:50" (1/3) ... [2021-11-02 16:16:44,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4854b3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 04:16:44, skipping insertion in model container [2021-11-02 16:16:44,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:13:53" (2/3) ... [2021-11-02 16:16:44,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4854b3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 04:16:44, skipping insertion in model container [2021-11-02 16:16:44,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 04:16:44" (3/3) ... [2021-11-02 16:16:44,688 INFO L111 eAbstractionObserver]: Analyzing ICFG main2_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i [2021-11-02 16:16:44,695 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 16:16:44,696 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-02 16:16:44,739 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 16:16:44,744 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 16:16:44,744 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-02 16:16:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 448 states, 428 states have (on average 1.5093457943925233) internal successors, (646), 447 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) [2021-11-02 16:16:44,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-02 16:16:44,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:16:44,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-02 16:16:44,777 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:16:44,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:16:44,780 INFO L85 PathProgramCache]: Analyzing trace with hash 936147530, now seen corresponding path program 1 times [2021-11-02 16:16:44,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:16:44,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680532005] [2021-11-02 16:16:44,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:16:44,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:16:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:16:45,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 16:16:45,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:16:45,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680532005] [2021-11-02 16:16:45,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680532005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:16:45,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:16:45,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:16:45,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519826537] [2021-11-02 16:16:45,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:16:45,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:16:45,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:16:45,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:16:45,508 INFO L87 Difference]: Start difference. First operand has 448 states, 428 states have (on average 1.5093457943925233) internal successors, (646), 447 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:16:47,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:16:50,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:16:52,590 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:16:54,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:16:56,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:16:59,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:02,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:04,482 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:11,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:13,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:15,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:17:15,160 INFO L93 Difference]: Finished difference Result 878 states and 1274 transitions. [2021-11-02 16:17:15,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:17:15,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-02 16:17:15,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:17:15,177 INFO L225 Difference]: With dead ends: 878 [2021-11-02 16:17:15,177 INFO L226 Difference]: Without dead ends: 428 [2021-11-02 16:17:15,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:17:15,185 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 122 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 14 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28004.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.63ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29465.89ms IncrementalHoareTripleChecker+Time [2021-11-02 16:17:15,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 0 Invalid, 1094 Unknown, 0 Unchecked, 18.63ms Time], IncrementalHoareTripleChecker [14 Valid, 1070 Invalid, 10 Unknown, 0 Unchecked, 29465.89ms Time] [2021-11-02 16:17:15,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-11-02 16:17:15,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2021-11-02 16:17:15,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 417 states have (on average 1.4556354916067147) internal successors, (607), 427 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:17:15,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 607 transitions. [2021-11-02 16:17:15,236 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 607 transitions. Word has length 6 [2021-11-02 16:17:15,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:17:15,237 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 607 transitions. [2021-11-02 16:17:15,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:17:15,239 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 607 transitions. [2021-11-02 16:17:15,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 16:17:15,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:17:15,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:17:15,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 16:17:15,240 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:17:15,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:17:15,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1044197774, now seen corresponding path program 1 times [2021-11-02 16:17:15,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:17:15,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6394908] [2021-11-02 16:17:15,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:17:15,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:17:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:17:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 16:17:15,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:17:15,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6394908] [2021-11-02 16:17:15,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6394908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:17:15,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:17:15,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:17:15,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316907733] [2021-11-02 16:17:15,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:17:15,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:17:15,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:17:15,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:17:15,605 INFO L87 Difference]: Start difference. First operand 428 states and 607 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:17:17,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:20,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:22,920 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:25,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:27,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:29,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:32,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:34,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:42,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:44,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:46,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:17:46,933 INFO L93 Difference]: Finished difference Result 619 states and 867 transitions. [2021-11-02 16:17:46,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:17:46,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-02 16:17:46,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:17:46,937 INFO L225 Difference]: With dead ends: 619 [2021-11-02 16:17:46,937 INFO L226 Difference]: Without dead ends: 617 [2021-11-02 16:17:46,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:17:46,939 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 256 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29624.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.90ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31171.92ms IncrementalHoareTripleChecker+Time [2021-11-02 16:17:46,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 0 Invalid, 1195 Unknown, 0 Unchecked, 21.90ms Time], IncrementalHoareTripleChecker [1 Valid, 1184 Invalid, 10 Unknown, 0 Unchecked, 31171.92ms Time] [2021-11-02 16:17:46,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-11-02 16:17:46,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 590. [2021-11-02 16:17:46,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 579 states have (on average 1.450777202072539) internal successors, (840), 589 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:17:46,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 840 transitions. [2021-11-02 16:17:46,980 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 840 transitions. Word has length 7 [2021-11-02 16:17:46,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:17:46,980 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 840 transitions. [2021-11-02 16:17:46,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:17:46,981 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 840 transitions. [2021-11-02 16:17:46,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 16:17:46,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:17:46,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:17:46,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 16:17:46,982 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:17:46,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:17:46,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1989607252, now seen corresponding path program 1 times [2021-11-02 16:17:46,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:17:46,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341489365] [2021-11-02 16:17:46,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:17:46,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:17:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:17:47,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 16:17:47,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:17:47,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341489365] [2021-11-02 16:17:47,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341489365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:17:47,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:17:47,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:17:47,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180711574] [2021-11-02 16:17:47,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:17:47,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:17:47,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:17:47,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:17:47,335 INFO L87 Difference]: Start difference. First operand 590 states and 840 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:17:49,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:52,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:54,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:56,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:17:58,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:01,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:04,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:06,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:14,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:16,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:18:18,879 INFO L93 Difference]: Finished difference Result 620 states and 868 transitions. [2021-11-02 16:18:18,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:18:18,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-02 16:18:18,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:18:18,881 INFO L225 Difference]: With dead ends: 620 [2021-11-02 16:18:18,881 INFO L226 Difference]: Without dead ends: 618 [2021-11-02 16:18:18,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:18:18,882 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 253 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29936.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.44ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31415.02ms IncrementalHoareTripleChecker+Time [2021-11-02 16:18:18,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 0 Invalid, 1198 Unknown, 0 Unchecked, 15.44ms Time], IncrementalHoareTripleChecker [1 Valid, 1187 Invalid, 10 Unknown, 0 Unchecked, 31415.02ms Time] [2021-11-02 16:18:18,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-11-02 16:18:18,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 591. [2021-11-02 16:18:18,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 580 states have (on average 1.45) internal successors, (841), 590 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:18:18,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 841 transitions. [2021-11-02 16:18:18,895 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 841 transitions. Word has length 8 [2021-11-02 16:18:18,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:18:18,896 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 841 transitions. [2021-11-02 16:18:18,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:18:18,896 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 841 transitions. [2021-11-02 16:18:18,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 16:18:18,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:18:18,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:18:18,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 16:18:18,897 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:18:18,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:18:18,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1548282556, now seen corresponding path program 1 times [2021-11-02 16:18:18,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:18:18,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961220940] [2021-11-02 16:18:18,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:18:18,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:18:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:18:19,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 16:18:19,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:18:19,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961220940] [2021-11-02 16:18:19,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961220940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:18:19,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:18:19,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:18:19,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90253925] [2021-11-02 16:18:19,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:18:19,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:18:19,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:18:19,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:18:19,215 INFO L87 Difference]: Start difference. First operand 591 states and 841 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:18:21,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:24,363 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:26,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:28,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:31,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:33,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:36,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:38,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:46,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:49,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:50,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:18:50,969 INFO L93 Difference]: Finished difference Result 621 states and 869 transitions. [2021-11-02 16:18:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:18:50,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-02 16:18:50,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:18:50,974 INFO L225 Difference]: With dead ends: 621 [2021-11-02 16:18:50,975 INFO L226 Difference]: Without dead ends: 619 [2021-11-02 16:18:50,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:18:50,976 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 250 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30072.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.59ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31632.63ms IncrementalHoareTripleChecker+Time [2021-11-02 16:18:50,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 0 Invalid, 1201 Unknown, 0 Unchecked, 10.59ms Time], IncrementalHoareTripleChecker [1 Valid, 1190 Invalid, 10 Unknown, 0 Unchecked, 31632.63ms Time] [2021-11-02 16:18:50,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-11-02 16:18:50,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 592. [2021-11-02 16:18:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 581 states have (on average 1.4492254733218588) internal successors, (842), 591 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:18:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 842 transitions. [2021-11-02 16:18:50,987 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 842 transitions. Word has length 9 [2021-11-02 16:18:50,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:18:50,988 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 842 transitions. [2021-11-02 16:18:50,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:18:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 842 transitions. [2021-11-02 16:18:50,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 16:18:50,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:18:50,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:18:50,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 16:18:50,991 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:18:50,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:18:50,992 INFO L85 PathProgramCache]: Analyzing trace with hash 752118878, now seen corresponding path program 1 times [2021-11-02 16:18:50,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:18:50,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873741671] [2021-11-02 16:18:50,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:18:50,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:18:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:18:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 16:18:51,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:18:51,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873741671] [2021-11-02 16:18:51,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873741671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:18:51,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:18:51,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:18:51,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764728394] [2021-11-02 16:18:51,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:18:51,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:18:51,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:18:51,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:18:51,358 INFO L87 Difference]: Start difference. First operand 592 states and 842 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:18:53,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:56,386 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:18:58,674 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:19:00,967 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:19:03,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:19:05,640 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:19:08,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:19:10,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:19:18,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:19:21,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:19:23,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:19:23,275 INFO L93 Difference]: Finished difference Result 622 states and 869 transitions. [2021-11-02 16:19:23,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:19:23,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-02 16:19:23,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:19:23,277 INFO L225 Difference]: With dead ends: 622 [2021-11-02 16:19:23,278 INFO L226 Difference]: Without dead ends: 615 [2021-11-02 16:19:23,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:19:23,279 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 247 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30196.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31784.31ms IncrementalHoareTripleChecker+Time [2021-11-02 16:19:23,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 0 Invalid, 1203 Unknown, 0 Unchecked, 8.67ms Time], IncrementalHoareTripleChecker [0 Valid, 1193 Invalid, 10 Unknown, 0 Unchecked, 31784.31ms Time] [2021-11-02 16:19:23,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-11-02 16:19:23,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 588. [2021-11-02 16:19:23,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 577 states have (on average 1.4506065857885615) internal successors, (837), 587 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:19:23,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 837 transitions. [2021-11-02 16:19:23,292 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 837 transitions. Word has length 10 [2021-11-02 16:19:23,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:19:23,292 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 837 transitions. [2021-11-02 16:19:23,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:19:23,292 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 837 transitions. [2021-11-02 16:19:23,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 16:19:23,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:19:23,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:19:23,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 16:19:23,294 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:19:23,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:19:23,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1686685008, now seen corresponding path program 1 times [2021-11-02 16:19:23,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:19:23,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823276686] [2021-11-02 16:19:23,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:19:23,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:19:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:19:23,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 16:19:23,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:19:23,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823276686] [2021-11-02 16:19:23,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823276686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:19:23,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:19:23,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:19:23,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446053898] [2021-11-02 16:19:23,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 16:19:23,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:19:23,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 16:19:23,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 16:19:23,771 INFO L87 Difference]: Start difference. First operand 588 states and 837 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:19:25,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:19:29,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:19:31,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:19:34,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:19:37,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:19:40,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:19:42,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:19:45,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:19:54,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:19:57,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:00,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:20:00,628 INFO L93 Difference]: Finished difference Result 1205 states and 1703 transitions. [2021-11-02 16:20:00,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 16:20:00,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-02 16:20:00,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:20:00,631 INFO L225 Difference]: With dead ends: 1205 [2021-11-02 16:20:00,631 INFO L226 Difference]: Without dead ends: 619 [2021-11-02 16:20:00,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.03ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 16:20:00,635 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 240 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34827.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.43ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36682.75ms IncrementalHoareTripleChecker+Time [2021-11-02 16:20:00,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 0 Invalid, 1801 Unknown, 0 Unchecked, 18.43ms Time], IncrementalHoareTripleChecker [1 Valid, 1790 Invalid, 10 Unknown, 0 Unchecked, 36682.75ms Time] [2021-11-02 16:20:00,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-11-02 16:20:00,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 589. [2021-11-02 16:20:00,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 578 states have (on average 1.4498269896193772) internal successors, (838), 588 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:20:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 838 transitions. [2021-11-02 16:20:00,651 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 838 transitions. Word has length 22 [2021-11-02 16:20:00,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:20:00,652 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 838 transitions. [2021-11-02 16:20:00,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:20:00,652 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 838 transitions. [2021-11-02 16:20:00,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 16:20:00,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:20:00,657 INFO L514 BasicCegarLoop]: 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] [2021-11-02 16:20:00,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 16:20:00,658 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:20:00,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:20:00,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1019148295, now seen corresponding path program 1 times [2021-11-02 16:20:00,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:20:00,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278478200] [2021-11-02 16:20:00,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:20:00,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:20:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:20:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 16:20:01,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:20:01,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278478200] [2021-11-02 16:20:01,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278478200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:20:01,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:20:01,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:20:01,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130288172] [2021-11-02 16:20:01,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:20:01,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:20:01,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:20:01,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:20:01,102 INFO L87 Difference]: Start difference. First operand 589 states and 838 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:20:03,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:06,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:09,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:11,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:14,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:16,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:18,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:21,819 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:28,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:30,878 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:32,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:20:32,248 INFO L93 Difference]: Finished difference Result 608 states and 859 transitions. [2021-11-02 16:20:32,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:20:32,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-02 16:20:32,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:20:32,252 INFO L225 Difference]: With dead ends: 608 [2021-11-02 16:20:32,253 INFO L226 Difference]: Without dead ends: 598 [2021-11-02 16:20:32,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.05ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:20:32,253 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 177 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 15 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29447.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.61ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31060.98ms IncrementalHoareTripleChecker+Time [2021-11-02 16:20:32,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 0 Invalid, 1031 Unknown, 0 Unchecked, 7.61ms Time], IncrementalHoareTripleChecker [15 Valid, 1006 Invalid, 10 Unknown, 0 Unchecked, 31060.98ms Time] [2021-11-02 16:20:32,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-02 16:20:32,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-11-02 16:20:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 589 states have (on average 1.434634974533107) internal successors, (845), 597 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:20:32,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 845 transitions. [2021-11-02 16:20:32,266 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 845 transitions. Word has length 24 [2021-11-02 16:20:32,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:20:32,266 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 845 transitions. [2021-11-02 16:20:32,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:20:32,266 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 845 transitions. [2021-11-02 16:20:32,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 16:20:32,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:20:32,267 INFO L514 BasicCegarLoop]: 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] [2021-11-02 16:20:32,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 16:20:32,267 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:20:32,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:20:32,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1516732346, now seen corresponding path program 1 times [2021-11-02 16:20:32,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:20:32,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148464940] [2021-11-02 16:20:32,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:20:32,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:20:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:20:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 16:20:32,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:20:32,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148464940] [2021-11-02 16:20:32,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148464940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:20:32,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:20:32,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:20:32,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788128949] [2021-11-02 16:20:32,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:20:32,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:20:32,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:20:32,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:20:32,651 INFO L87 Difference]: Start difference. First operand 598 states and 845 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:20:34,777 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:38,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:40,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:43,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:45,724 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:48,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:50,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:53,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:20:59,547 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:02,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:03,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:21:03,544 INFO L93 Difference]: Finished difference Result 598 states and 845 transitions. [2021-11-02 16:21:03,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:21:03,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-02 16:21:03,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:21:03,547 INFO L225 Difference]: With dead ends: 598 [2021-11-02 16:21:03,547 INFO L226 Difference]: Without dead ends: 596 [2021-11-02 16:21:03,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:21:03,548 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 161 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 11 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29173.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.86ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30816.48ms IncrementalHoareTripleChecker+Time [2021-11-02 16:21:03,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 0 Invalid, 1039 Unknown, 0 Unchecked, 7.86ms Time], IncrementalHoareTripleChecker [11 Valid, 1018 Invalid, 10 Unknown, 0 Unchecked, 30816.48ms Time] [2021-11-02 16:21:03,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-02 16:21:03,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-02 16:21:03,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 588 states have (on average 1.433673469387755) internal successors, (843), 595 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:21:03,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 843 transitions. [2021-11-02 16:21:03,559 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 843 transitions. Word has length 24 [2021-11-02 16:21:03,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:21:03,559 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 843 transitions. [2021-11-02 16:21:03,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:21:03,560 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 843 transitions. [2021-11-02 16:21:03,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-02 16:21:03,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:21:03,560 INFO L514 BasicCegarLoop]: 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] [2021-11-02 16:21:03,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 16:21:03,561 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:21:03,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:21:03,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1372297908, now seen corresponding path program 1 times [2021-11-02 16:21:03,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:21:03,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157815404] [2021-11-02 16:21:03,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:21:03,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:21:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:21:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 16:21:03,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:21:03,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157815404] [2021-11-02 16:21:03,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157815404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:21:03,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:21:03,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:21:03,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089088408] [2021-11-02 16:21:03,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:21:03,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:21:03,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:21:03,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:21:03,956 INFO L87 Difference]: Start difference. First operand 596 states and 843 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:21:06,089 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:09,466 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:11,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:14,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:16,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:19,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:21,494 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:24,771 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:30,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:33,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:34,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:21:34,848 INFO L93 Difference]: Finished difference Result 596 states and 843 transitions. [2021-11-02 16:21:34,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:21:34,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-02 16:21:34,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:21:34,851 INFO L225 Difference]: With dead ends: 596 [2021-11-02 16:21:34,851 INFO L226 Difference]: Without dead ends: 594 [2021-11-02 16:21:34,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:21:34,852 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 168 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 11 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29187.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.50ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30813.92ms IncrementalHoareTripleChecker+Time [2021-11-02 16:21:34,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 0 Invalid, 1028 Unknown, 0 Unchecked, 7.50ms Time], IncrementalHoareTripleChecker [11 Valid, 1007 Invalid, 10 Unknown, 0 Unchecked, 30813.92ms Time] [2021-11-02 16:21:34,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-11-02 16:21:34,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2021-11-02 16:21:34,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 587 states have (on average 1.432708688245315) internal successors, (841), 593 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:21:34,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 841 transitions. [2021-11-02 16:21:34,863 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 841 transitions. Word has length 25 [2021-11-02 16:21:34,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:21:34,865 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 841 transitions. [2021-11-02 16:21:34,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:21:34,865 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 841 transitions. [2021-11-02 16:21:34,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-02 16:21:34,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:21:34,866 INFO L514 BasicCegarLoop]: 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] [2021-11-02 16:21:34,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 16:21:34,867 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:21:34,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:21:34,867 INFO L85 PathProgramCache]: Analyzing trace with hash 785800736, now seen corresponding path program 1 times [2021-11-02 16:21:34,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:21:34,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824638471] [2021-11-02 16:21:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:21:34,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:21:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:21:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 16:21:35,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:21:35,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824638471] [2021-11-02 16:21:35,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824638471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:21:35,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:21:35,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:21:35,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559108665] [2021-11-02 16:21:35,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:21:35,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:21:35,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:21:35,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:21:35,205 INFO L87 Difference]: Start difference. First operand 594 states and 841 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:21:37,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:40,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:43,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:45,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:48,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:50,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:52,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:55,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:01,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:04,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:05,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:22:05,563 INFO L93 Difference]: Finished difference Result 598 states and 845 transitions. [2021-11-02 16:22:05,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:22:05,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-02 16:22:05,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:22:05,566 INFO L225 Difference]: With dead ends: 598 [2021-11-02 16:22:05,566 INFO L226 Difference]: Without dead ends: 596 [2021-11-02 16:22:05,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:22:05,567 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 145 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 12 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28720.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.13ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30286.20ms IncrementalHoareTripleChecker+Time [2021-11-02 16:22:05,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 0 Invalid, 1043 Unknown, 0 Unchecked, 6.13ms Time], IncrementalHoareTripleChecker [12 Valid, 1021 Invalid, 10 Unknown, 0 Unchecked, 30286.20ms Time] [2021-11-02 16:22:05,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-02 16:22:05,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 594. [2021-11-02 16:22:05,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 587 states have (on average 1.432708688245315) internal successors, (841), 593 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:22:05,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 841 transitions. [2021-11-02 16:22:05,575 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 841 transitions. Word has length 29 [2021-11-02 16:22:05,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:22:05,576 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 841 transitions. [2021-11-02 16:22:05,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:22:05,576 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 841 transitions. [2021-11-02 16:22:05,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 16:22:05,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:22:05,577 INFO L514 BasicCegarLoop]: 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] [2021-11-02 16:22:05,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 16:22:05,577 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:22:05,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:22:05,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1333436880, now seen corresponding path program 1 times [2021-11-02 16:22:05,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:22:05,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998759329] [2021-11-02 16:22:05,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:22:05,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:22:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:22:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 16:22:05,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:22:05,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998759329] [2021-11-02 16:22:05,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998759329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:22:05,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:22:05,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:22:05,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485527340] [2021-11-02 16:22:05,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:22:05,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:22:05,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:22:05,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:22:05,879 INFO L87 Difference]: Start difference. First operand 594 states and 841 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:22:08,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:11,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:13,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:16,150 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:18,983 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:21,485 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:23,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:26,647 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:32,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:34,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:35,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:22:35,953 INFO L93 Difference]: Finished difference Result 598 states and 845 transitions. [2021-11-02 16:22:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:22:35,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-02 16:22:35,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:22:35,955 INFO L225 Difference]: With dead ends: 598 [2021-11-02 16:22:35,955 INFO L226 Difference]: Without dead ends: 596 [2021-11-02 16:22:35,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.94ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:22:35,956 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 171 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 12 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28388.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.22ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29997.61ms IncrementalHoareTripleChecker+Time [2021-11-02 16:22:35,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 0 Invalid, 1015 Unknown, 0 Unchecked, 7.22ms Time], IncrementalHoareTripleChecker [12 Valid, 993 Invalid, 10 Unknown, 0 Unchecked, 29997.61ms Time] [2021-11-02 16:22:35,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-02 16:22:35,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 594. [2021-11-02 16:22:35,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 587 states have (on average 1.432708688245315) internal successors, (841), 593 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:22:35,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 841 transitions. [2021-11-02 16:22:35,964 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 841 transitions. Word has length 32 [2021-11-02 16:22:35,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:22:35,964 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 841 transitions. [2021-11-02 16:22:35,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:22:35,965 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 841 transitions. [2021-11-02 16:22:35,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 16:22:35,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:22:35,965 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:22:35,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 16:22:35,966 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:22:35,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:22:35,966 INFO L85 PathProgramCache]: Analyzing trace with hash 713769163, now seen corresponding path program 1 times [2021-11-02 16:22:35,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:22:35,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708602483] [2021-11-02 16:22:35,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:22:35,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:22:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:22:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 16:22:36,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:22:36,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708602483] [2021-11-02 16:22:36,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708602483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:22:36,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:22:36,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:22:36,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464722265] [2021-11-02 16:22:36,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:22:36,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:22:36,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:22:36,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:22:36,275 INFO L87 Difference]: Start difference. First operand 594 states and 841 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:22:38,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:41,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:43,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:45,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:48,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:51,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:53,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:56,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:02,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:05,496 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:08,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:23:08,192 INFO L93 Difference]: Finished difference Result 814 states and 1148 transitions. [2021-11-02 16:23:08,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:23:08,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-02 16:23:08,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:23:08,195 INFO L225 Difference]: With dead ends: 814 [2021-11-02 16:23:08,195 INFO L226 Difference]: Without dead ends: 812 [2021-11-02 16:23:08,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:23:08,195 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 280 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30170.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.50ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31819.78ms IncrementalHoareTripleChecker+Time [2021-11-02 16:23:08,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 0 Invalid, 1179 Unknown, 0 Unchecked, 6.50ms Time], IncrementalHoareTripleChecker [1 Valid, 1168 Invalid, 10 Unknown, 0 Unchecked, 31819.78ms Time] [2021-11-02 16:23:08,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-11-02 16:23:08,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 797. [2021-11-02 16:23:08,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 790 states have (on average 1.429113924050633) internal successors, (1129), 796 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:23:08,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1129 transitions. [2021-11-02 16:23:08,208 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1129 transitions. Word has length 32 [2021-11-02 16:23:08,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:23:08,209 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 1129 transitions. [2021-11-02 16:23:08,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:23:08,209 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1129 transitions. [2021-11-02 16:23:08,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 16:23:08,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:23:08,210 INFO L514 BasicCegarLoop]: 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] [2021-11-02 16:23:08,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 16:23:08,210 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:23:08,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:23:08,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1552875374, now seen corresponding path program 1 times [2021-11-02 16:23:08,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:23:08,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023274842] [2021-11-02 16:23:08,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:23:08,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:23:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:23:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 16:23:08,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:23:08,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023274842] [2021-11-02 16:23:08,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023274842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:23:08,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:23:08,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:23:08,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760948355] [2021-11-02 16:23:08,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:23:08,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:23:08,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:23:08,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:23:08,522 INFO L87 Difference]: Start difference. First operand 797 states and 1129 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:23:10,656 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:14,188 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:16,547 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:18,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:21,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:24,287 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:27,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:30,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:35,598 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:38,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:39,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:23:39,650 INFO L93 Difference]: Finished difference Result 1233 states and 1748 transitions. [2021-11-02 16:23:39,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:23:39,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-02 16:23:39,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:23:39,652 INFO L225 Difference]: With dead ends: 1233 [2021-11-02 16:23:39,652 INFO L226 Difference]: Without dead ends: 802 [2021-11-02 16:23:39,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:23:39,653 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29403.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.14ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31048.42ms IncrementalHoareTripleChecker+Time [2021-11-02 16:23:39,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 1187 Unknown, 0 Unchecked, 6.14ms Time], IncrementalHoareTripleChecker [0 Valid, 1177 Invalid, 10 Unknown, 0 Unchecked, 31048.42ms Time] [2021-11-02 16:23:39,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2021-11-02 16:23:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 798. [2021-11-02 16:23:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 791 states have (on average 1.4285714285714286) internal successors, (1130), 797 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:23:39,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1130 transitions. [2021-11-02 16:23:39,667 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1130 transitions. Word has length 32 [2021-11-02 16:23:39,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:23:39,667 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 1130 transitions. [2021-11-02 16:23:39,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:23:39,667 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1130 transitions. [2021-11-02 16:23:39,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 16:23:39,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:23:39,668 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:23:39,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 16:23:39,668 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:23:39,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:23:39,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1308313738, now seen corresponding path program 1 times [2021-11-02 16:23:39,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:23:39,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259868588] [2021-11-02 16:23:39,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:23:39,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:23:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:23:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 16:23:39,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:23:39,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259868588] [2021-11-02 16:23:39,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259868588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:23:39,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:23:39,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:23:39,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123468092] [2021-11-02 16:23:39,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:23:39,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:23:39,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:23:39,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:23:39,973 INFO L87 Difference]: Start difference. First operand 798 states and 1130 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:23:42,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:45,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:47,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:49,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:52,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:54,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:23:57,819 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:00,476 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:05,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:08,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:11,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:24:11,238 INFO L93 Difference]: Finished difference Result 1014 states and 1427 transitions. [2021-11-02 16:24:11,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:24:11,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-02 16:24:11,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:24:11,242 INFO L225 Difference]: With dead ends: 1014 [2021-11-02 16:24:11,242 INFO L226 Difference]: Without dead ends: 1012 [2021-11-02 16:24:11,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:24:11,242 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 264 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29483.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.94ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31165.62ms IncrementalHoareTripleChecker+Time [2021-11-02 16:24:11,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 0 Invalid, 1182 Unknown, 0 Unchecked, 6.94ms Time], IncrementalHoareTripleChecker [1 Valid, 1171 Invalid, 10 Unknown, 0 Unchecked, 31165.62ms Time] [2021-11-02 16:24:11,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-11-02 16:24:11,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 991. [2021-11-02 16:24:11,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 984 states have (on average 1.4247967479674797) internal successors, (1402), 990 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:24:11,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1402 transitions. [2021-11-02 16:24:11,256 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1402 transitions. Word has length 32 [2021-11-02 16:24:11,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:24:11,258 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 1402 transitions. [2021-11-02 16:24:11,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:24:11,258 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1402 transitions. [2021-11-02 16:24:11,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 16:24:11,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:24:11,259 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:24:11,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 16:24:11,260 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:24:11,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:24:11,260 INFO L85 PathProgramCache]: Analyzing trace with hash 652007451, now seen corresponding path program 1 times [2021-11-02 16:24:11,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:24:11,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863297143] [2021-11-02 16:24:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:24:11,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:24:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:24:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 16:24:11,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:24:11,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863297143] [2021-11-02 16:24:11,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863297143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:24:11,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:24:11,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:24:11,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404212359] [2021-11-02 16:24:11,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:24:11,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:24:11,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:24:11,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:24:11,593 INFO L87 Difference]: Start difference. First operand 991 states and 1402 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:24:13,714 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:16,762 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:19,104 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:21,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:24,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:26,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:29,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:32,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:37,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:40,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:44,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:24:44,132 INFO L93 Difference]: Finished difference Result 1017 states and 1430 transitions. [2021-11-02 16:24:44,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:24:44,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-02 16:24:44,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:24:44,135 INFO L225 Difference]: With dead ends: 1017 [2021-11-02 16:24:44,135 INFO L226 Difference]: Without dead ends: 1015 [2021-11-02 16:24:44,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.79ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:24:44,136 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 277 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30733.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.94ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32435.80ms IncrementalHoareTripleChecker+Time [2021-11-02 16:24:44,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 0 Invalid, 1182 Unknown, 0 Unchecked, 6.94ms Time], IncrementalHoareTripleChecker [1 Valid, 1171 Invalid, 10 Unknown, 0 Unchecked, 32435.80ms Time] [2021-11-02 16:24:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2021-11-02 16:24:44,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 994. [2021-11-02 16:24:44,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 987 states have (on average 1.4235055724417427) internal successors, (1405), 993 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:24:44,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1405 transitions. [2021-11-02 16:24:44,154 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1405 transitions. Word has length 33 [2021-11-02 16:24:44,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:24:44,154 INFO L470 AbstractCegarLoop]: Abstraction has 994 states and 1405 transitions. [2021-11-02 16:24:44,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:24:44,154 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1405 transitions. [2021-11-02 16:24:44,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 16:24:44,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:24:44,155 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:24:44,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 16:24:44,156 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:24:44,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:24:44,156 INFO L85 PathProgramCache]: Analyzing trace with hash 2079320712, now seen corresponding path program 1 times [2021-11-02 16:24:44,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:24:44,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827073050] [2021-11-02 16:24:44,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:24:44,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:24:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:24:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 16:24:44,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:24:44,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827073050] [2021-11-02 16:24:44,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827073050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:24:44,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:24:44,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:24:44,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315433769] [2021-11-02 16:24:44,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:24:44,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:24:44,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:24:44,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:24:44,560 INFO L87 Difference]: Start difference. First operand 994 states and 1405 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:24:46,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:49,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:52,160 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:54,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:57,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:24:59,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:25:02,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:25:05,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:25:11,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:25:14,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:25:17,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:25:17,653 INFO L93 Difference]: Finished difference Result 1219 states and 1714 transitions. [2021-11-02 16:25:17,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:25:17,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-02 16:25:17,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:25:17,657 INFO L225 Difference]: With dead ends: 1219 [2021-11-02 16:25:17,657 INFO L226 Difference]: Without dead ends: 1217 [2021-11-02 16:25:17,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:25:17,658 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 270 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31201.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.18ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32985.59ms IncrementalHoareTripleChecker+Time [2021-11-02 16:25:17,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 0 Invalid, 1182 Unknown, 0 Unchecked, 7.18ms Time], IncrementalHoareTripleChecker [1 Valid, 1171 Invalid, 10 Unknown, 0 Unchecked, 32985.59ms Time] [2021-11-02 16:25:17,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-11-02 16:25:17,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1191. [2021-11-02 16:25:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1184 states have (on average 1.4222972972972974) internal successors, (1684), 1190 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:25:17,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1684 transitions. [2021-11-02 16:25:17,679 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1684 transitions. Word has length 33 [2021-11-02 16:25:17,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:25:17,679 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 1684 transitions. [2021-11-02 16:25:17,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:25:17,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1684 transitions. [2021-11-02 16:25:17,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 16:25:17,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:25:17,681 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:25:17,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 16:25:17,681 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:25:17,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:25:17,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1903020092, now seen corresponding path program 1 times [2021-11-02 16:25:17,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:25:17,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268210849] [2021-11-02 16:25:17,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:25:17,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:25:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:25:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 16:25:18,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:25:18,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268210849] [2021-11-02 16:25:18,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268210849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:25:18,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:25:18,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:25:18,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512710546] [2021-11-02 16:25:18,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:25:18,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:25:18,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:25:18,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:25:18,051 INFO L87 Difference]: Start difference. First operand 1191 states and 1684 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:25:20,188 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:25:23,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:25:25,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:25:27,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:25:30,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:25:33,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:25:36,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:25:38,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:25:44,627 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:25:47,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:25:50,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:25:50,741 INFO L93 Difference]: Finished difference Result 1220 states and 1715 transitions. [2021-11-02 16:25:50,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:25:50,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-02 16:25:50,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:25:50,745 INFO L225 Difference]: With dead ends: 1220 [2021-11-02 16:25:50,746 INFO L226 Difference]: Without dead ends: 1218 [2021-11-02 16:25:50,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:25:50,746 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 261 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30874.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.83ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32587.72ms IncrementalHoareTripleChecker+Time [2021-11-02 16:25:50,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 0 Invalid, 1186 Unknown, 0 Unchecked, 6.83ms Time], IncrementalHoareTripleChecker [1 Valid, 1175 Invalid, 10 Unknown, 0 Unchecked, 32587.72ms Time] [2021-11-02 16:25:50,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2021-11-02 16:25:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1191. [2021-11-02 16:25:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1184 states have (on average 1.4222972972972974) internal successors, (1684), 1190 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:25:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1684 transitions. [2021-11-02 16:25:50,766 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1684 transitions. Word has length 33 [2021-11-02 16:25:50,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:25:50,766 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 1684 transitions. [2021-11-02 16:25:50,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:25:50,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1684 transitions. [2021-11-02 16:25:50,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-02 16:25:50,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:25:50,768 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:25:50,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 16:25:50,768 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:25:50,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:25:50,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1262605611, now seen corresponding path program 1 times [2021-11-02 16:25:50,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:25:50,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660759033] [2021-11-02 16:25:50,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:25:50,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:25:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:25:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 16:25:51,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:25:51,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660759033] [2021-11-02 16:25:51,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660759033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:25:51,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:25:51,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:25:51,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094073765] [2021-11-02 16:25:51,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:25:51,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:25:51,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:25:51,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:25:51,132 INFO L87 Difference]: Start difference. First operand 1191 states and 1684 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:25:53,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:25:56,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:25:58,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:00,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:03,517 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:05,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:09,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:11,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:17,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:20,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:23,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:26:23,575 INFO L93 Difference]: Finished difference Result 1223 states and 1718 transitions. [2021-11-02 16:26:23,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:26:23,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-02 16:26:23,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:26:23,579 INFO L225 Difference]: With dead ends: 1223 [2021-11-02 16:26:23,579 INFO L226 Difference]: Without dead ends: 1221 [2021-11-02 16:26:23,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.91ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:26:23,580 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 274 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30664.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.59ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32332.47ms IncrementalHoareTripleChecker+Time [2021-11-02 16:26:23,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 0 Invalid, 1185 Unknown, 0 Unchecked, 6.59ms Time], IncrementalHoareTripleChecker [1 Valid, 1174 Invalid, 10 Unknown, 0 Unchecked, 32332.47ms Time] [2021-11-02 16:26:23,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2021-11-02 16:26:23,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1195. [2021-11-02 16:26:23,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1188 states have (on average 1.4208754208754208) internal successors, (1688), 1194 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:26:23,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1688 transitions. [2021-11-02 16:26:23,598 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1688 transitions. Word has length 34 [2021-11-02 16:26:23,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:26:23,598 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 1688 transitions. [2021-11-02 16:26:23,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:26:23,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1688 transitions. [2021-11-02 16:26:23,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-02 16:26:23,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:26:23,599 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:26:23,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 16:26:23,600 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:26:23,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:26:23,600 INFO L85 PathProgramCache]: Analyzing trace with hash 34432510, now seen corresponding path program 1 times [2021-11-02 16:26:23,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:26:23,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151620984] [2021-11-02 16:26:23,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:26:23,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:26:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:26:23,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 16:26:23,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:26:23,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151620984] [2021-11-02 16:26:23,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151620984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:26:23,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:26:23,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:26:23,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540772099] [2021-11-02 16:26:23,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:26:23,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:26:23,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:26:23,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:26:23,958 INFO L87 Difference]: Start difference. First operand 1195 states and 1688 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:26:26,108 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:29,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:31,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:33,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:36,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:38,969 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:42,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:44,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:50,603 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:53,534 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:26:56,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:26:56,513 INFO L93 Difference]: Finished difference Result 1222 states and 1717 transitions. [2021-11-02 16:26:56,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:26:56,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-02 16:26:56,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:26:56,517 INFO L225 Difference]: With dead ends: 1222 [2021-11-02 16:26:56,517 INFO L226 Difference]: Without dead ends: 1220 [2021-11-02 16:26:56,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:26:56,518 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 267 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30779.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.82ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32449.10ms IncrementalHoareTripleChecker+Time [2021-11-02 16:26:56,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 0 Invalid, 1186 Unknown, 0 Unchecked, 6.82ms Time], IncrementalHoareTripleChecker [1 Valid, 1175 Invalid, 10 Unknown, 0 Unchecked, 32449.10ms Time] [2021-11-02 16:26:56,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-11-02 16:26:56,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1193. [2021-11-02 16:26:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1186 states have (on average 1.4215851602023608) internal successors, (1686), 1192 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:26:56,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1686 transitions. [2021-11-02 16:26:56,540 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1686 transitions. Word has length 34 [2021-11-02 16:26:56,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:26:56,540 INFO L470 AbstractCegarLoop]: Abstraction has 1193 states and 1686 transitions. [2021-11-02 16:26:56,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:26:56,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1686 transitions. [2021-11-02 16:26:56,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-02 16:26:56,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:26:56,542 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:26:56,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 16:26:56,542 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:26:56,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:26:56,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1135919404, now seen corresponding path program 1 times [2021-11-02 16:26:56,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:26:56,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110081425] [2021-11-02 16:26:56,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:26:56,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:26:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:26:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 16:26:56,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:26:56,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110081425] [2021-11-02 16:26:56,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110081425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:26:56,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:26:56,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:26:56,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266639894] [2021-11-02 16:26:56,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:26:56,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:26:56,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:26:56,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:26:56,893 INFO L87 Difference]: Start difference. First operand 1193 states and 1686 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:26:59,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:01,964 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:04,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:06,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:09,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:11,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:14,900 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:17,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:23,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:26,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:28,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:27:28,780 INFO L93 Difference]: Finished difference Result 1223 states and 1718 transitions. [2021-11-02 16:27:28,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:27:28,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-02 16:27:28,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:27:28,784 INFO L225 Difference]: With dead ends: 1223 [2021-11-02 16:27:28,784 INFO L226 Difference]: Without dead ends: 1221 [2021-11-02 16:27:28,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:27:28,785 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 258 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30137.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.52ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31783.94ms IncrementalHoareTripleChecker+Time [2021-11-02 16:27:28,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 0 Invalid, 1190 Unknown, 0 Unchecked, 6.52ms Time], IncrementalHoareTripleChecker [1 Valid, 1179 Invalid, 10 Unknown, 0 Unchecked, 31783.94ms Time] [2021-11-02 16:27:28,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2021-11-02 16:27:28,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1193. [2021-11-02 16:27:28,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1186 states have (on average 1.4215851602023608) internal successors, (1686), 1192 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:27:28,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1686 transitions. [2021-11-02 16:27:28,806 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1686 transitions. Word has length 34 [2021-11-02 16:27:28,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:27:28,807 INFO L470 AbstractCegarLoop]: Abstraction has 1193 states and 1686 transitions. [2021-11-02 16:27:28,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:27:28,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1686 transitions. [2021-11-02 16:27:28,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-02 16:27:28,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:27:28,808 INFO L514 BasicCegarLoop]: 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] [2021-11-02 16:27:28,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 16:27:28,808 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:27:28,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:27:28,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1657451433, now seen corresponding path program 1 times [2021-11-02 16:27:28,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:27:28,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882023949] [2021-11-02 16:27:28,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:27:28,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:27:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:27:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 16:27:29,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:27:29,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882023949] [2021-11-02 16:27:29,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882023949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:27:29,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:27:29,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:27:29,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283197252] [2021-11-02 16:27:29,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:27:29,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:27:29,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:27:29,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:27:29,104 INFO L87 Difference]: Start difference. First operand 1193 states and 1686 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:27:31,228 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:34,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:37,196 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:39,559 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:42,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:44,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:48,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:50,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:55,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:57,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:27:59,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:27:59,514 INFO L93 Difference]: Finished difference Result 1193 states and 1686 transitions. [2021-11-02 16:27:59,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:27:59,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-02 16:27:59,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:27:59,517 INFO L225 Difference]: With dead ends: 1193 [2021-11-02 16:27:59,518 INFO L226 Difference]: Without dead ends: 1191 [2021-11-02 16:27:59,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:27:59,518 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 211 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 11 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28662.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.50ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30330.49ms IncrementalHoareTripleChecker+Time [2021-11-02 16:27:59,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 0 Invalid, 967 Unknown, 0 Unchecked, 5.50ms Time], IncrementalHoareTripleChecker [11 Valid, 946 Invalid, 10 Unknown, 0 Unchecked, 30330.49ms Time] [2021-11-02 16:27:59,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2021-11-02 16:27:59,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1189. [2021-11-02 16:27:59,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1183 states have (on average 1.4218089602704986) internal successors, (1682), 1188 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:27:59,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1682 transitions. [2021-11-02 16:27:59,540 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1682 transitions. Word has length 35 [2021-11-02 16:27:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:27:59,540 INFO L470 AbstractCegarLoop]: Abstraction has 1189 states and 1682 transitions. [2021-11-02 16:27:59,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:27:59,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1682 transitions. [2021-11-02 16:27:59,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-02 16:27:59,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:27:59,541 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:27:59,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 16:27:59,541 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:27:59,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:27:59,542 INFO L85 PathProgramCache]: Analyzing trace with hash -486068379, now seen corresponding path program 1 times [2021-11-02 16:27:59,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:27:59,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013831381] [2021-11-02 16:27:59,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:27:59,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:27:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:27:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 16:27:59,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:27:59,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013831381] [2021-11-02 16:27:59,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013831381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:27:59,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:27:59,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 16:27:59,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567177628] [2021-11-02 16:27:59,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:27:59,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:27:59,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:27:59,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:27:59,932 INFO L87 Difference]: Start difference. First operand 1189 states and 1682 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:28:02,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:28:04,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:28:07,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15