./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--mgag200--mgag200.ko-entry_point.cil.out.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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--mgag200--mgag200.ko-entry_point.cil.out.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 2d3fedd3393c9ef9037d23202ca807e49e09d9211ff455e3da7db836a65b4737 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 20:57:23,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 20:57:23,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 20:57:23,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 20:57:23,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 20:57:23,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 20:57:23,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 20:57:23,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 20:57:23,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 20:57:23,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 20:57:23,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 20:57:23,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 20:57:23,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 20:57:23,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 20:57:23,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 20:57:23,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 20:57:23,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 20:57:23,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 20:57:23,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 20:57:23,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 20:57:23,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 20:57:23,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 20:57:23,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 20:57:23,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 20:57:23,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 20:57:23,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 20:57:23,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 20:57:23,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 20:57:23,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 20:57:23,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 20:57:23,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 20:57:23,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 20:57:23,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 20:57:23,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 20:57:23,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 20:57:23,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 20:57:23,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 20:57:23,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 20:57:23,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 20:57:23,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 20:57:23,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 20:57:23,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 20:57:23,170 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 20:57:23,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 20:57:23,170 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 20:57:23,170 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 20:57:23,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 20:57:23,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 20:57:23,172 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 20:57:23,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 20:57:23,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 20:57:23,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 20:57:23,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 20:57:23,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 20:57:23,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 20:57:23,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 20:57:23,173 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 20:57:23,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 20:57:23,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 20:57:23,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 20:57:23,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 20:57:23,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:57:23,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 20:57:23,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 20:57:23,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 20:57:23,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 20:57:23,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 20:57:23,175 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 20:57:23,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 20:57:23,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 20:57:23,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 20:57:23,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d3fedd3393c9ef9037d23202ca807e49e09d9211ff455e3da7db836a65b4737 [2021-11-02 20:57:23,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 20:57:23,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 20:57:23,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 20:57:23,382 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 20:57:23,384 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 20:57:23,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--mgag200--mgag200.ko-entry_point.cil.out.i [2021-11-02 20:57:23,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3e8a070f/a1d27fff27f6457cbfb6b6d414203911/FLAG55986b25e [2021-11-02 20:57:24,102 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 20:57:24,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--mgag200--mgag200.ko-entry_point.cil.out.i [2021-11-02 20:57:24,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3e8a070f/a1d27fff27f6457cbfb6b6d414203911/FLAG55986b25e [2021-11-02 20:57:24,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3e8a070f/a1d27fff27f6457cbfb6b6d414203911 [2021-11-02 20:57:24,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 20:57:24,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 20:57:24,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 20:57:24,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 20:57:24,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 20:57:24,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:57:24" (1/1) ... [2021-11-02 20:57:24,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@611ff888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:24, skipping insertion in model container [2021-11-02 20:57:24,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:57:24" (1/1) ... [2021-11-02 20:57:24,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 20:57:24,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 20:57:26,585 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--mgag200--mgag200.ko-entry_point.cil.out.i[367278,367291] [2021-11-02 20:57:26,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:57:26,771 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 20:57:27,086 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--mgag200--mgag200.ko-entry_point.cil.out.i[367278,367291] [2021-11-02 20:57:27,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:57:27,281 INFO L208 MainTranslator]: Completed translation [2021-11-02 20:57:27,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:27 WrapperNode [2021-11-02 20:57:27,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 20:57:27,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 20:57:27,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 20:57:27,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 20:57:27,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:27" (1/1) ... [2021-11-02 20:57:27,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:27" (1/1) ... [2021-11-02 20:57:28,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 20:57:28,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 20:57:28,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 20:57:28,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 20:57:28,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:27" (1/1) ... [2021-11-02 20:57:28,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:27" (1/1) ... [2021-11-02 20:57:28,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:27" (1/1) ... [2021-11-02 20:57:28,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:27" (1/1) ... [2021-11-02 20:57:28,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:27" (1/1) ... [2021-11-02 20:57:29,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:27" (1/1) ... [2021-11-02 20:57:29,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:27" (1/1) ... [2021-11-02 20:57:29,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 20:57:29,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 20:57:29,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 20:57:29,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 20:57:29,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:27" (1/1) ... [2021-11-02 20:57:29,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:57:29,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:57:29,513 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 20:57:29,530 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 20:57:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 20:57:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 20:57:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 20:57:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 20:57:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 20:57:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 20:57:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 20:57:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 20:57:29,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 20:57:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 20:57:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 20:57:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-02 20:57:29,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 20:57:29,542 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_global_release [2021-11-02 20:57:29,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 20:57:29,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 20:57:29,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 20:57:29,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 20:57:38,080 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 20:57:38,080 INFO L299 CfgBuilder]: Removed 8054 assume(true) statements. [2021-11-02 20:57:38,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:57:38 BoogieIcfgContainer [2021-11-02 20:57:38,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 20:57:38,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 20:57:38,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 20:57:38,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 20:57:38,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:57:24" (1/3) ... [2021-11-02 20:57:38,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680ac67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:57:38, skipping insertion in model container [2021-11-02 20:57:38,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:27" (2/3) ... [2021-11-02 20:57:38,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680ac67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:57:38, skipping insertion in model container [2021-11-02 20:57:38,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:57:38" (3/3) ... [2021-11-02 20:57:38,097 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--mgag200--mgag200.ko-entry_point.cil.out.i [2021-11-02 20:57:38,101 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 20:57:38,101 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 108 error locations. [2021-11-02 20:57:38,153 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 20:57:38,158 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 20:57:38,159 INFO L340 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2021-11-02 20:57:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 7010 states, 6901 states have (on average 1.3595131140414434) internal successors, (9382), 7009 states have internal predecessors, (9382), 0 states have call successors, (0), 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 20:57:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 20:57:38,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:57:38,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:38,242 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr101ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 105 more)] === [2021-11-02 20:57:38,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:57:38,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1984148282, now seen corresponding path program 1 times [2021-11-02 20:57:38,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:57:38,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881058561] [2021-11-02 20:57:38,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:57:38,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:57:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:57:38,707 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 20:57:38,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:57:38,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881058561] [2021-11-02 20:57:38,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881058561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:57:38,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:57:38,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:57:38,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280910577] [2021-11-02 20:57:38,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 20:57:38,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:57:38,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 20:57:38,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 20:57:38,747 INFO L87 Difference]: Start difference. First operand has 7010 states, 6901 states have (on average 1.3595131140414434) internal successors, (9382), 7009 states have internal predecessors, (9382), 0 states have call successors, (0), 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 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 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 20:57:42,510 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:57:44,754 WARN L515 Checker$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 20:57:47,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:58:11,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:58:11,117 INFO L93 Difference]: Finished difference Result 14016 states and 18759 transitions. [2021-11-02 20:58:11,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 20:58:11,120 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-02 20:58:11,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:58:11,158 INFO L225 Difference]: With dead ends: 14016 [2021-11-02 20:58:11,158 INFO L226 Difference]: Without dead ends: 6968 [2021-11-02 20:58:11,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 20:58:11,177 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9147 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29505.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 9150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.38ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9147 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31614.31ms IncrementalHoareTripleChecker+Time [2021-11-02 20:58:11,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 9150 Unknown, 0 Unchecked, 34.38ms Time], IncrementalHoareTripleChecker [0 Valid, 9147 Invalid, 3 Unknown, 0 Unchecked, 31614.31ms Time] [2021-11-02 20:58:11,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6968 states. [2021-11-02 20:58:11,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6968 to 6968. [2021-11-02 20:58:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6968 states, 6860 states have (on average 1.3276967930029155) internal successors, (9108), 6967 states have internal predecessors, (9108), 0 states have call successors, (0), 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 20:58:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6968 states to 6968 states and 9108 transitions. [2021-11-02 20:58:11,408 INFO L78 Accepts]: Start accepts. Automaton has 6968 states and 9108 transitions. Word has length 75 [2021-11-02 20:58:11,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:58:11,409 INFO L470 AbstractCegarLoop]: Abstraction has 6968 states and 9108 transitions. [2021-11-02 20:58:11,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 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 20:58:11,409 INFO L276 IsEmpty]: Start isEmpty. Operand 6968 states and 9108 transitions. [2021-11-02 20:58:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 20:58:11,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:58:11,417 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:11,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 20:58:11,418 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr101ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 105 more)] === [2021-11-02 20:58:11,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:58:11,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1202098068, now seen corresponding path program 1 times [2021-11-02 20:58:11,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:58:11,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039186015] [2021-11-02 20:58:11,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:58:11,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:58:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:58:11,698 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 20:58:11,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:58:11,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039186015] [2021-11-02 20:58:11,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039186015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:58:11,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:58:11,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:58:11,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913232674] [2021-11-02 20:58:11,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:58:11,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:58:11,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:58:11,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:58:11,701 INFO L87 Difference]: Start difference. First operand 6968 states and 9108 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 20:58:23,820 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 20:58:26,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:58:29,185 WARN L515 Checker$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 20:58:53,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 20:59:19,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:59:19,816 INFO L93 Difference]: Finished difference Result 13901 states and 18185 transitions. [2021-11-02 20:59:19,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:59:19,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-02 20:59:19,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:59:19,839 INFO L225 Difference]: With dead ends: 13901 [2021-11-02 20:59:19,839 INFO L226 Difference]: Without dead ends: 6973 [2021-11-02 20:59:19,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:59:19,848 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 8982 mSDsCounter, 0 mSdLazyCounter, 18204 mSolverCounterSat, 8 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63186.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 120.70ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18204 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67082.14ms IncrementalHoareTripleChecker+Time [2021-11-02 20:59:19,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 18216 Unknown, 0 Unchecked, 120.70ms Time], IncrementalHoareTripleChecker [8 Valid, 18204 Invalid, 4 Unknown, 0 Unchecked, 67082.14ms Time] [2021-11-02 20:59:19,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6973 states. [2021-11-02 20:59:19,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6973 to 6973. [2021-11-02 20:59:19,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6973 states, 6865 states have (on average 1.3274581209031318) internal successors, (9113), 6972 states have internal predecessors, (9113), 0 states have call successors, (0), 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 20:59:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6973 states to 6973 states and 9113 transitions. [2021-11-02 20:59:19,981 INFO L78 Accepts]: Start accepts. Automaton has 6973 states and 9113 transitions. Word has length 75 [2021-11-02 20:59:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:59:19,982 INFO L470 AbstractCegarLoop]: Abstraction has 6973 states and 9113 transitions. [2021-11-02 20:59:19,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 20:59:19,983 INFO L276 IsEmpty]: Start isEmpty. Operand 6973 states and 9113 transitions. [2021-11-02 20:59:19,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 20:59:19,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:59:19,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:19,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 20:59:19,988 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr101ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 105 more)] === [2021-11-02 20:59:19,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:59:19,988 INFO L85 PathProgramCache]: Analyzing trace with hash 274436522, now seen corresponding path program 1 times [2021-11-02 20:59:19,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:59:19,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742590532] [2021-11-02 20:59:19,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:59:19,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:59:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:59:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 20:59:20,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:59:20,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742590532] [2021-11-02 20:59:20,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742590532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:59:20,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:59:20,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:59:20,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320567887] [2021-11-02 20:59:20,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:59:20,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:59:20,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:59:20,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:59:20,193 INFO L87 Difference]: Start difference. First operand 6973 states and 9113 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:59:33,378 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 20:59:36,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:59:39,181 WARN L515 Checker$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 21:00:31,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:00:31,887 INFO L93 Difference]: Finished difference Result 13923 states and 18225 transitions. [2021-11-02 21:00:31,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:00:31,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-02 21:00:31,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:00:31,910 INFO L225 Difference]: With dead ends: 13923 [2021-11-02 21:00:31,911 INFO L226 Difference]: Without dead ends: 6998 [2021-11-02 21:00:31,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:00:31,925 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 8982 mSDsCounter, 0 mSdLazyCounter, 18185 mSolverCounterSat, 48 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66087.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 85.69ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 18185 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70865.30ms IncrementalHoareTripleChecker+Time [2021-11-02 21:00:31,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 18236 Unknown, 0 Unchecked, 85.69ms Time], IncrementalHoareTripleChecker [48 Valid, 18185 Invalid, 3 Unknown, 0 Unchecked, 70865.30ms Time] [2021-11-02 21:00:31,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6998 states. [2021-11-02 21:00:32,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6998 to 6998. [2021-11-02 21:00:32,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6998 states, 6890 states have (on average 1.3262699564586358) internal successors, (9138), 6997 states have internal predecessors, (9138), 0 states have call successors, (0), 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 21:00:32,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6998 states to 6998 states and 9138 transitions. [2021-11-02 21:00:32,072 INFO L78 Accepts]: Start accepts. Automaton has 6998 states and 9138 transitions. Word has length 79 [2021-11-02 21:00:32,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:00:32,073 INFO L470 AbstractCegarLoop]: Abstraction has 6998 states and 9138 transitions. [2021-11-02 21:00:32,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:00:32,074 INFO L276 IsEmpty]: Start isEmpty. Operand 6998 states and 9138 transitions. [2021-11-02 21:00:32,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 21:00:32,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:00:32,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:00:32,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 21:00:32,076 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr101ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 105 more)] === [2021-11-02 21:00:32,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:00:32,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1242810852, now seen corresponding path program 1 times [2021-11-02 21:00:32,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:00:32,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428549186] [2021-11-02 21:00:32,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:00:32,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:00:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:00:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 21:00:32,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:00:32,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428549186] [2021-11-02 21:00:32,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428549186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:00:32,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:00:32,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:00:32,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751643720] [2021-11-02 21:00:32,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:00:32,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:00:32,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:00:32,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:00:32,341 INFO L87 Difference]: Start difference. First operand 6998 states and 9138 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:00:43,188 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:00:45,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:00:48,513 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 21:01:57,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:01:57,807 INFO L93 Difference]: Finished difference Result 18937 states and 24850 transitions. [2021-11-02 21:01:57,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:01:57,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-02 21:01:57,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:01:57,854 INFO L225 Difference]: With dead ends: 18937 [2021-11-02 21:01:57,855 INFO L226 Difference]: Without dead ends: 12010 [2021-11-02 21:01:57,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.21ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:01:57,867 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6624 mSDsluCounter, 9086 mSDsCounter, 0 mSdLazyCounter, 18200 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76828.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6624 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 129.39ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18200 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84102.23ms IncrementalHoareTripleChecker+Time [2021-11-02 21:01:57,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6624 Valid, 0 Invalid, 18206 Unknown, 0 Unchecked, 129.39ms Time], IncrementalHoareTripleChecker [3 Valid, 18200 Invalid, 3 Unknown, 0 Unchecked, 84102.23ms Time] [2021-11-02 21:01:57,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12010 states. [2021-11-02 21:01:58,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12010 to 11844. [2021-11-02 21:01:58,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11844 states, 11736 states have (on average 1.3381901840490797) internal successors, (15705), 11843 states have internal predecessors, (15705), 0 states have call successors, (0), 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 21:01:58,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11844 states to 11844 states and 15705 transitions. [2021-11-02 21:01:58,111 INFO L78 Accepts]: Start accepts. Automaton has 11844 states and 15705 transitions. Word has length 83 [2021-11-02 21:01:58,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:01:58,113 INFO L470 AbstractCegarLoop]: Abstraction has 11844 states and 15705 transitions. [2021-11-02 21:01:58,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:01:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 11844 states and 15705 transitions. [2021-11-02 21:01:58,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 21:01:58,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:01:58,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:58,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 21:01:58,115 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 105 more)] === [2021-11-02 21:01:58,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:01:58,116 INFO L85 PathProgramCache]: Analyzing trace with hash -723226752, now seen corresponding path program 1 times [2021-11-02 21:01:58,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:01:58,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54888732] [2021-11-02 21:01:58,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:01:58,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:01:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:01:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 21:01:58,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:01:58,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54888732] [2021-11-02 21:01:58,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54888732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:01:58,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:01:58,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:01:58,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891357067] [2021-11-02 21:01:58,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:01:58,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:01:58,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:01:58,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:01:58,313 INFO L87 Difference]: Start difference. First operand 11844 states and 15705 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:02:06,112 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 21:02:08,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:02:11,245 WARN L515 Checker$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 21:02:13,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 21:03:22,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:03:22,468 INFO L93 Difference]: Finished difference Result 31920 states and 42462 transitions. [2021-11-02 21:03:22,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:03:22,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-02 21:03:22,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:03:22,514 INFO L225 Difference]: With dead ends: 31920 [2021-11-02 21:03:22,514 INFO L226 Difference]: Without dead ends: 20147 [2021-11-02 21:03:22,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.61ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:03:22,539 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5692 mSDsluCounter, 9009 mSDsCounter, 0 mSdLazyCounter, 18140 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75305.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5692 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 88.09ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18140 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82832.72ms IncrementalHoareTripleChecker+Time [2021-11-02 21:03:22,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5692 Valid, 0 Invalid, 18146 Unknown, 0 Unchecked, 88.09ms Time], IncrementalHoareTripleChecker [2 Valid, 18140 Invalid, 4 Unknown, 0 Unchecked, 82832.72ms Time] [2021-11-02 21:03:22,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20147 states. [2021-11-02 21:03:22,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20147 to 19901. [2021-11-02 21:03:22,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19901 states, 19793 states have (on average 1.3468903147577427) internal successors, (26659), 19900 states have internal predecessors, (26659), 0 states have call successors, (0), 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 21:03:22,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19901 states to 19901 states and 26659 transitions. [2021-11-02 21:03:22,893 INFO L78 Accepts]: Start accepts. Automaton has 19901 states and 26659 transitions. Word has length 86 [2021-11-02 21:03:22,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:03:22,894 INFO L470 AbstractCegarLoop]: Abstraction has 19901 states and 26659 transitions. [2021-11-02 21:03:22,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:03:22,894 INFO L276 IsEmpty]: Start isEmpty. Operand 19901 states and 26659 transitions. [2021-11-02 21:03:22,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 21:03:22,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:03:22,895 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:22,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 21:03:22,895 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr101ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 105 more)] === [2021-11-02 21:03:22,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:03:22,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2049540884, now seen corresponding path program 1 times [2021-11-02 21:03:22,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:03:22,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41090086] [2021-11-02 21:03:22,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:03:22,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:03:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:03:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 21:03:23,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:03:23,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41090086] [2021-11-02 21:03:23,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41090086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:03:23,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:03:23,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:03:23,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366030426] [2021-11-02 21:03:23,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:03:23,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:03:23,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:03:23,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:03:23,114 INFO L87 Difference]: Start difference. First operand 19901 states and 26659 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 21:03:30,220 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 21:03:32,691 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:03:35,328 WARN L515 Checker$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 21:03:37,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 21:05:04,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:05:04,824 INFO L93 Difference]: Finished difference Result 37667 states and 50669 transitions. [2021-11-02 21:05:04,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:05:04,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-02 21:05:04,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:05:04,916 INFO L225 Difference]: With dead ends: 37667 [2021-11-02 21:05:04,917 INFO L226 Difference]: Without dead ends: 37533 [2021-11-02 21:05:04,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:05:04,939 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7168 mSDsluCounter, 8639 mSDsCounter, 0 mSdLazyCounter, 19599 mSolverCounterSat, 142 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88994.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7168 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 105.46ms SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 19599 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100130.26ms IncrementalHoareTripleChecker+Time [2021-11-02 21:05:04,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7168 Valid, 0 Invalid, 19745 Unknown, 0 Unchecked, 105.46ms Time], IncrementalHoareTripleChecker [142 Valid, 19599 Invalid, 4 Unknown, 0 Unchecked, 100130.26ms Time] [2021-11-02 21:05:04,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37533 states. [2021-11-02 21:05:05,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37533 to 37479. [2021-11-02 21:05:05,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37479 states, 37371 states have (on average 1.3470873136924353) internal successors, (50342), 37478 states have internal predecessors, (50342), 0 states have call successors, (0), 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 21:05:05,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37479 states to 37479 states and 50342 transitions. [2021-11-02 21:05:05,650 INFO L78 Accepts]: Start accepts. Automaton has 37479 states and 50342 transitions. Word has length 88 [2021-11-02 21:05:05,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:05:05,650 INFO L470 AbstractCegarLoop]: Abstraction has 37479 states and 50342 transitions. [2021-11-02 21:05:05,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 21:05:05,651 INFO L276 IsEmpty]: Start isEmpty. Operand 37479 states and 50342 transitions. [2021-11-02 21:05:05,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 21:05:05,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:05:05,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:05:05,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 21:05:05,652 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr102ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 105 more)] === [2021-11-02 21:05:05,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:05:05,653 INFO L85 PathProgramCache]: Analyzing trace with hash 888770242, now seen corresponding path program 1 times [2021-11-02 21:05:05,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:05:05,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640773655] [2021-11-02 21:05:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:05:05,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:05:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:05:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 21:05:05,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:05:05,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640773655] [2021-11-02 21:05:05,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640773655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:05:05,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:05:05,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:05:05,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558776634] [2021-11-02 21:05:05,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:05:05,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:05:05,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:05:05,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:05:05,938 INFO L87 Difference]: Start difference. First operand 37479 states and 50342 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:05:14,123 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 21:05:16,941 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:05:19,541 WARN L515 Checker$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 21:06:12,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 21:06:45,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:06:45,406 INFO L93 Difference]: Finished difference Result 72538 states and 97588 transitions. [2021-11-02 21:06:45,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:06:45,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-02 21:06:45,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:06:45,539 INFO L225 Difference]: With dead ends: 72538 [2021-11-02 21:06:45,539 INFO L226 Difference]: Without dead ends: 72536 [2021-11-02 21:06:45,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:06:45,570 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6730 mSDsluCounter, 9018 mSDsCounter, 0 mSdLazyCounter, 18123 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85525.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6730 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 105.49ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18123 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97549.18ms IncrementalHoareTripleChecker+Time [2021-11-02 21:06:45,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6730 Valid, 0 Invalid, 18128 Unknown, 0 Unchecked, 105.49ms Time], IncrementalHoareTripleChecker [1 Valid, 18123 Invalid, 4 Unknown, 0 Unchecked, 97549.18ms Time] [2021-11-02 21:06:45,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72536 states. [2021-11-02 21:06:46,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72536 to 72368. [2021-11-02 21:06:46,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72368 states, 72260 states have (on average 1.349321893163576) internal successors, (97502), 72367 states have internal predecessors, (97502), 0 states have call successors, (0), 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 21:06:46,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72368 states to 72368 states and 97502 transitions. [2021-11-02 21:06:46,944 INFO L78 Accepts]: Start accepts. Automaton has 72368 states and 97502 transitions. Word has length 89 [2021-11-02 21:06:46,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:06:46,945 INFO L470 AbstractCegarLoop]: Abstraction has 72368 states and 97502 transitions. [2021-11-02 21:06:46,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:06:46,945 INFO L276 IsEmpty]: Start isEmpty. Operand 72368 states and 97502 transitions. [2021-11-02 21:06:46,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 21:06:46,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:06:46,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:46,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 21:06:46,946 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr103ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 105 more)] === [2021-11-02 21:06:46,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:06:46,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1782101942, now seen corresponding path program 1 times [2021-11-02 21:06:46,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:06:46,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162762834] [2021-11-02 21:06:46,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:06:46,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:06:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:06:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 21:06:47,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:06:47,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162762834] [2021-11-02 21:06:47,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162762834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:06:47,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:06:47,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:06:47,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417349066] [2021-11-02 21:06:47,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:06:47,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:06:47,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:06:47,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:06:47,151 INFO L87 Difference]: Start difference. First operand 72368 states and 97502 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:06:54,892 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 21:06:57,457 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:07:00,248 WARN L515 Checker$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 21:07:54,498 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 21:08:26,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:08:26,645 INFO L93 Difference]: Finished difference Result 72539 states and 97589 transitions. [2021-11-02 21:08:26,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:08:26,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-02 21:08:26,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:08:26,751 INFO L225 Difference]: With dead ends: 72539 [2021-11-02 21:08:26,752 INFO L226 Difference]: Without dead ends: 72537 [2021-11-02 21:08:26,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:08:26,773 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6727 mSDsluCounter, 9021 mSDsCounter, 0 mSdLazyCounter, 18126 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84421.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6727 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 93.70ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18126 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97643.48ms IncrementalHoareTripleChecker+Time [2021-11-02 21:08:26,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6727 Valid, 0 Invalid, 18131 Unknown, 0 Unchecked, 93.70ms Time], IncrementalHoareTripleChecker [1 Valid, 18126 Invalid, 4 Unknown, 0 Unchecked, 97643.48ms Time] [2021-11-02 21:08:26,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72537 states. [2021-11-02 21:08:27,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72537 to 72369. [2021-11-02 21:08:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72369 states, 72261 states have (on average 1.3493170589944783) internal successors, (97503), 72368 states have internal predecessors, (97503), 0 states have call successors, (0), 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 21:08:27,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72369 states to 72369 states and 97503 transitions. [2021-11-02 21:08:27,901 INFO L78 Accepts]: Start accepts. Automaton has 72369 states and 97503 transitions. Word has length 90 [2021-11-02 21:08:27,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:08:27,901 INFO L470 AbstractCegarLoop]: Abstraction has 72369 states and 97503 transitions. [2021-11-02 21:08:27,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:08:27,901 INFO L276 IsEmpty]: Start isEmpty. Operand 72369 states and 97503 transitions. [2021-11-02 21:08:27,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 21:08:27,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:08:27,902 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:27,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 21:08:27,903 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr104ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 105 more)] === [2021-11-02 21:08:27,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:08:27,903 INFO L85 PathProgramCache]: Analyzing trace with hash -589386420, now seen corresponding path program 1 times [2021-11-02 21:08:27,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:08:27,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145834646] [2021-11-02 21:08:27,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:08:27,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:08:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:08:28,395 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 21:08:28,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:08:28,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145834646] [2021-11-02 21:08:28,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145834646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:08:28,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:08:28,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:08:28,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409871824] [2021-11-02 21:08:28,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:08:28,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:08:28,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:08:28,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:08:28,396 INFO L87 Difference]: Start difference. First operand 72369 states and 97503 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:08:35,729 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 21:08:38,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:08:40,922 WARN L515 Checker$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 21:09:40,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 21:10:03,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:10:03,881 INFO L93 Difference]: Finished difference Result 72540 states and 97590 transitions. [2021-11-02 21:10:03,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:10:03,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-02 21:10:03,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:10:03,996 INFO L225 Difference]: With dead ends: 72540 [2021-11-02 21:10:03,996 INFO L226 Difference]: Without dead ends: 72538 [2021-11-02 21:10:04,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:10:04,020 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6724 mSDsluCounter, 9024 mSDsCounter, 0 mSdLazyCounter, 18129 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80586.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6724 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 84.96ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18129 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93636.97ms IncrementalHoareTripleChecker+Time [2021-11-02 21:10:04,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6724 Valid, 0 Invalid, 18134 Unknown, 0 Unchecked, 84.96ms Time], IncrementalHoareTripleChecker [1 Valid, 18129 Invalid, 4 Unknown, 0 Unchecked, 93636.97ms Time] [2021-11-02 21:10:04,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72538 states. [2021-11-02 21:10:05,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72538 to 72370. [2021-11-02 21:10:05,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72370 states, 72262 states have (on average 1.3493122249591762) internal successors, (97504), 72369 states have internal predecessors, (97504), 0 states have call successors, (0), 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 21:10:05,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72370 states to 72370 states and 97504 transitions. [2021-11-02 21:10:05,256 INFO L78 Accepts]: Start accepts. Automaton has 72370 states and 97504 transitions. Word has length 91 [2021-11-02 21:10:05,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:10:05,257 INFO L470 AbstractCegarLoop]: Abstraction has 72370 states and 97504 transitions. [2021-11-02 21:10:05,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:10:05,257 INFO L276 IsEmpty]: Start isEmpty. Operand 72370 states and 97504 transitions. [2021-11-02 21:10:05,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 21:10:05,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:10:05,258 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:05,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 21:10:05,258 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr105ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 105 more)] === [2021-11-02 21:10:05,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:10:05,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1091081600, now seen corresponding path program 1 times [2021-11-02 21:10:05,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:10:05,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012476376] [2021-11-02 21:10:05,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:10:05,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:10:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:10:05,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 21:10:05,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:10:05,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012476376] [2021-11-02 21:10:05,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012476376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:10:05,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:10:05,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:10:05,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981045921] [2021-11-02 21:10:05,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:10:05,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:10:05,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:10:05,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:10:05,424 INFO L87 Difference]: Start difference. First operand 72370 states and 97504 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 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 21:10:12,996 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 21:10:15,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:18,256 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15