./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 c36dfa3b 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-c36dfa3 [2021-11-04 06:36:52,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 06:36:52,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 06:36:52,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 06:36:52,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 06:36:52,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 06:36:52,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 06:36:52,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 06:36:52,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 06:36:52,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 06:36:52,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 06:36:52,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 06:36:52,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 06:36:52,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 06:36:52,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 06:36:52,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 06:36:52,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 06:36:52,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 06:36:52,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 06:36:52,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 06:36:52,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 06:36:52,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 06:36:52,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 06:36:52,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 06:36:52,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 06:36:52,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 06:36:52,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 06:36:52,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 06:36:52,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 06:36:52,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 06:36:52,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 06:36:52,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 06:36:52,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 06:36:52,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 06:36:52,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 06:36:52,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 06:36:52,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 06:36:52,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 06:36:52,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 06:36:52,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 06:36:52,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 06:36:52,700 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 06:36:52,732 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 06:36:52,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 06:36:52,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 06:36:52,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 06:36:52,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 06:36:52,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 06:36:52,734 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 06:36:52,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 06:36:52,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 06:36:52,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 06:36:52,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 06:36:52,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 06:36:52,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 06:36:52,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 06:36:52,736 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 06:36:52,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 06:36:52,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 06:36:52,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 06:36:52,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 06:36:52,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 06:36:52,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 06:36:52,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 06:36:52,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 06:36:52,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 06:36:52,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 06:36:52,738 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 06:36:52,738 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 06:36:52,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 06:36:52,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 06:36:52,740 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d3fedd3393c9ef9037d23202ca807e49e09d9211ff455e3da7db836a65b4737 [2021-11-04 06:36:52,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 06:36:52,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 06:36:52,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 06:36:52,987 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 06:36:52,988 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 06:36:52,989 INFO L432 ainManager$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 [2021-11-04 06:36:53,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41f610ffa/4e92b5721ee14f9ea58e54dd067c282c/FLAGf1cae9408 [2021-11-04 06:36:53,787 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 06:36:53,788 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 [2021-11-04 06:36:53,837 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41f610ffa/4e92b5721ee14f9ea58e54dd067c282c/FLAGf1cae9408 [2021-11-04 06:36:54,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41f610ffa/4e92b5721ee14f9ea58e54dd067c282c [2021-11-04 06:36:54,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 06:36:54,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 06:36:54,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 06:36:54,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 06:36:54,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 06:36:54,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 06:36:54" (1/1) ... [2021-11-04 06:36:54,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc77581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:36:54, skipping insertion in model container [2021-11-04 06:36:54,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 06:36:54" (1/1) ... [2021-11-04 06:36:54,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 06:36:54,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 06:36:57,333 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] [2021-11-04 06:36:57,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 06:36:57,741 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 06:36:58,100 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] [2021-11-04 06:36:58,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 06:36:58,331 INFO L208 MainTranslator]: Completed translation [2021-11-04 06:36:58,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:36:58 WrapperNode [2021-11-04 06:36:58,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 06:36:58,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 06:36:58,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 06:36:58,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 06:36:58,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:36:58" (1/1) ... [2021-11-04 06:36:58,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:36:58" (1/1) ... [2021-11-04 06:36:59,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 06:36:59,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 06:36:59,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 06:36:59,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 06:36:59,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:36:58" (1/1) ... [2021-11-04 06:36:59,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:36:58" (1/1) ... [2021-11-04 06:36:59,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:36:58" (1/1) ... [2021-11-04 06:36:59,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:36:58" (1/1) ... [2021-11-04 06:37:00,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:36:58" (1/1) ... [2021-11-04 06:37:00,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:36:58" (1/1) ... [2021-11-04 06:37:00,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:36:58" (1/1) ... [2021-11-04 06:37:00,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 06:37:00,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 06:37:00,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 06:37:00,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 06:37:00,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:36:58" (1/1) ... [2021-11-04 06:37:00,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 06:37:00,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 06:37:00,929 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) [2021-11-04 06:37:00,967 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 [2021-11-04 06:37:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 06:37:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 06:37:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 06:37:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 06:37:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 06:37:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 06:37:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 06:37:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 06:37:00,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 06:37:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 06:37:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 06:37:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-04 06:37:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 06:37:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_global_release [2021-11-04 06:37:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 06:37:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 06:37:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 06:37:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 06:37:10,621 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 06:37:10,622 INFO L299 CfgBuilder]: Removed 8054 assume(true) statements. [2021-11-04 06:37:10,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 06:37:10 BoogieIcfgContainer [2021-11-04 06:37:10,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 06:37:10,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 06:37:10,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 06:37:10,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 06:37:10,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 06:36:54" (1/3) ... [2021-11-04 06:37:10,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b79fdd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 06:37:10, skipping insertion in model container [2021-11-04 06:37:10,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:36:58" (2/3) ... [2021-11-04 06:37:10,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b79fdd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 06:37:10, skipping insertion in model container [2021-11-04 06:37:10,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 06:37:10" (3/3) ... [2021-11-04 06:37:10,638 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--mgag200--mgag200.ko-entry_point.cil.out.i [2021-11-04 06:37:10,644 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 06:37:10,644 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 108 error locations. [2021-11-04 06:37:10,696 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 06:37:10,703 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 [2021-11-04 06:37:10,704 INFO L340 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2021-11-04 06:37:10,790 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) [2021-11-04 06:37:10,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-04 06:37:10,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:37:10,804 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] [2021-11-04 06:37:10,805 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)] === [2021-11-04 06:37:10,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:37:10,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1984148282, now seen corresponding path program 1 times [2021-11-04 06:37:10,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:37:10,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655713486] [2021-11-04 06:37:10,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:37:10,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:37:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:37:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 06:37:11,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:37:11,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655713486] [2021-11-04 06:37:11,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655713486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:37:11,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:37:11,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:37:11,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566959137] [2021-11-04 06:37:11,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:37:11,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 06:37:11,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:37:11,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 06:37:11,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 06:37:11,345 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) [2021-11-04 06:37:15,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:37:17,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:37:20,500 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 [] [2021-11-04 06:37:47,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:37:47,237 INFO L93 Difference]: Finished difference Result 14016 states and 18759 transitions. [2021-11-04 06:37:47,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 06:37:47,239 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 [2021-11-04 06:37:47,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:37:47,291 INFO L225 Difference]: With dead ends: 14016 [2021-11-04 06:37:47,291 INFO L226 Difference]: Without dead ends: 6968 [2021-11-04 06:37:47,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 06:37:47,317 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9147 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31805.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 9150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9147 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34890.15ms IncrementalHoareTripleChecker+Time [2021-11-04 06:37:47,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 9150 Unknown, 0 Unchecked, 59.92ms Time], IncrementalHoareTripleChecker [0 Valid, 9147 Invalid, 3 Unknown, 0 Unchecked, 34890.15ms Time] [2021-11-04 06:37:47,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6968 states. [2021-11-04 06:37:47,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6968 to 6968. [2021-11-04 06:37:47,545 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) [2021-11-04 06:37:47,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6968 states to 6968 states and 9108 transitions. [2021-11-04 06:37:47,565 INFO L78 Accepts]: Start accepts. Automaton has 6968 states and 9108 transitions. Word has length 75 [2021-11-04 06:37:47,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:37:47,566 INFO L470 AbstractCegarLoop]: Abstraction has 6968 states and 9108 transitions. [2021-11-04 06:37:47,566 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) [2021-11-04 06:37:47,566 INFO L276 IsEmpty]: Start isEmpty. Operand 6968 states and 9108 transitions. [2021-11-04 06:37:47,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-04 06:37:47,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:37:47,573 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] [2021-11-04 06:37:47,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 06:37:47,574 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)] === [2021-11-04 06:37:47,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:37:47,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1202098068, now seen corresponding path program 1 times [2021-11-04 06:37:47,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:37:47,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82295892] [2021-11-04 06:37:47,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:37:47,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:37:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:37:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 06:37:47,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:37:47,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82295892] [2021-11-04 06:37:47,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82295892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:37:47,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:37:47,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:37:47,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294023643] [2021-11-04 06:37:47,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:37:47,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:37:47,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:37:47,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:37:47,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:37:47,922 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) [2021-11-04 06:37:52,231 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 [] [2021-11-04 06:38:02,682 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:38:05,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:38:08,140 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 [] [2021-11-04 06:39:06,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:39:06,104 INFO L93 Difference]: Finished difference Result 13901 states and 18185 transitions. [2021-11-04 06:39:06,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:39:06,104 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 [2021-11-04 06:39:06,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:39:06,131 INFO L225 Difference]: With dead ends: 13901 [2021-11-04 06:39:06,131 INFO L226 Difference]: Without dead ends: 6973 [2021-11-04 06:39:06,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.04ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:39:06,152 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 8982 mSDsCounter, 0 mSdLazyCounter, 18204 mSolverCounterSat, 8 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71538.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 143.27ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18204 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77096.13ms IncrementalHoareTripleChecker+Time [2021-11-04 06:39:06,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 18216 Unknown, 0 Unchecked, 143.27ms Time], IncrementalHoareTripleChecker [8 Valid, 18204 Invalid, 4 Unknown, 0 Unchecked, 77096.13ms Time] [2021-11-04 06:39:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6973 states. [2021-11-04 06:39:06,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6973 to 6973. [2021-11-04 06:39:06,303 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) [2021-11-04 06:39:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6973 states to 6973 states and 9113 transitions. [2021-11-04 06:39:06,319 INFO L78 Accepts]: Start accepts. Automaton has 6973 states and 9113 transitions. Word has length 75 [2021-11-04 06:39:06,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:39:06,320 INFO L470 AbstractCegarLoop]: Abstraction has 6973 states and 9113 transitions. [2021-11-04 06:39:06,320 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) [2021-11-04 06:39:06,320 INFO L276 IsEmpty]: Start isEmpty. Operand 6973 states and 9113 transitions. [2021-11-04 06:39:06,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-04 06:39:06,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:39:06,325 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] [2021-11-04 06:39:06,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 06:39:06,326 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)] === [2021-11-04 06:39:06,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:39:06,326 INFO L85 PathProgramCache]: Analyzing trace with hash 274436522, now seen corresponding path program 1 times [2021-11-04 06:39:06,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:39:06,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200609455] [2021-11-04 06:39:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:39:06,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:39:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:39:06,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-04 06:39:06,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:39:06,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200609455] [2021-11-04 06:39:06,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200609455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:39:06,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:39:06,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:39:06,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55354063] [2021-11-04 06:39:06,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:39:06,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:39:06,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:39:06,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:39:06,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:39:06,582 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) [2021-11-04 06:39:11,312 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 [] [2021-11-04 06:39:24,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:39:26,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:39:29,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:39:32,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 06:40:28,864 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 [] [2021-11-04 06:40:29,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:40:29,360 INFO L93 Difference]: Finished difference Result 13923 states and 18225 transitions. [2021-11-04 06:40:29,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:40:29,361 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 [2021-11-04 06:40:29,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:40:29,382 INFO L225 Difference]: With dead ends: 13923 [2021-11-04 06:40:29,382 INFO L226 Difference]: Without dead ends: 6998 [2021-11-04 06:40:29,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:40:29,395 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 8981 mSDsCounter, 0 mSdLazyCounter, 18181 mSolverCounterSat, 48 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75871.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 108.84ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 18181 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81880.35ms IncrementalHoareTripleChecker+Time [2021-11-04 06:40:29,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 18235 Unknown, 0 Unchecked, 108.84ms Time], IncrementalHoareTripleChecker [48 Valid, 18181 Invalid, 6 Unknown, 0 Unchecked, 81880.35ms Time] [2021-11-04 06:40:29,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6998 states. [2021-11-04 06:40:29,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6998 to 6998. [2021-11-04 06:40:29,510 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) [2021-11-04 06:40:29,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6998 states to 6998 states and 9138 transitions. [2021-11-04 06:40:29,528 INFO L78 Accepts]: Start accepts. Automaton has 6998 states and 9138 transitions. Word has length 79 [2021-11-04 06:40:29,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:40:29,530 INFO L470 AbstractCegarLoop]: Abstraction has 6998 states and 9138 transitions. [2021-11-04 06:40:29,530 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) [2021-11-04 06:40:29,531 INFO L276 IsEmpty]: Start isEmpty. Operand 6998 states and 9138 transitions. [2021-11-04 06:40:29,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-04 06:40:29,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:40:29,533 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] [2021-11-04 06:40:29,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 06:40:29,533 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)] === [2021-11-04 06:40:29,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:40:29,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1242810852, now seen corresponding path program 1 times [2021-11-04 06:40:29,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:40:29,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826426200] [2021-11-04 06:40:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:40:29,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:40:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:40:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-04 06:40:29,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:40:29,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826426200] [2021-11-04 06:40:29,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826426200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:40:29,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:40:29,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:40:29,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381538525] [2021-11-04 06:40:29,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:40:29,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:40:29,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:40:29,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:40:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:40:29,764 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) [2021-11-04 06:40:31,971 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 [] [2021-11-04 06:40:42,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:40:44,874 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:40:47,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:41:10,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 06:42:04,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:42:04,438 INFO L93 Difference]: Finished difference Result 18937 states and 24850 transitions. [2021-11-04 06:42:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:42:04,438 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 [2021-11-04 06:42:04,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:42:04,483 INFO L225 Difference]: With dead ends: 18937 [2021-11-04 06:42:04,483 INFO L226 Difference]: Without dead ends: 12010 [2021-11-04 06:42:04,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:42:04,498 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6624 mSDsluCounter, 9086 mSDsCounter, 0 mSdLazyCounter, 18198 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83832.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6624 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 155.28ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18198 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93200.79ms IncrementalHoareTripleChecker+Time [2021-11-04 06:42:04,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6624 Valid, 0 Invalid, 18206 Unknown, 0 Unchecked, 155.28ms Time], IncrementalHoareTripleChecker [3 Valid, 18198 Invalid, 5 Unknown, 0 Unchecked, 93200.79ms Time] [2021-11-04 06:42:04,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12010 states. [2021-11-04 06:42:04,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12010 to 11844. [2021-11-04 06:42:04,805 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) [2021-11-04 06:42:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11844 states to 11844 states and 15705 transitions. [2021-11-04 06:42:04,825 INFO L78 Accepts]: Start accepts. Automaton has 11844 states and 15705 transitions. Word has length 83 [2021-11-04 06:42:04,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:42:04,825 INFO L470 AbstractCegarLoop]: Abstraction has 11844 states and 15705 transitions. [2021-11-04 06:42:04,825 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) [2021-11-04 06:42:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 11844 states and 15705 transitions. [2021-11-04 06:42:04,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-04 06:42:04,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:42:04,827 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] [2021-11-04 06:42:04,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 06:42:04,827 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)] === [2021-11-04 06:42:04,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:42:04,827 INFO L85 PathProgramCache]: Analyzing trace with hash -723226752, now seen corresponding path program 1 times [2021-11-04 06:42:04,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:42:04,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417761669] [2021-11-04 06:42:04,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:42:04,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:42:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:42:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-04 06:42:05,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:42:05,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417761669] [2021-11-04 06:42:05,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417761669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:42:05,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:42:05,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:42:05,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30153342] [2021-11-04 06:42:05,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:42:05,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:42:05,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:42:05,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:42:05,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:42:05,027 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) [2021-11-04 06:42:12,709 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:42:15,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:42:17,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:42:57,337 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 06:43:40,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:43:40,473 INFO L93 Difference]: Finished difference Result 32058 states and 42650 transitions. [2021-11-04 06:43:40,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:43:40,473 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 [2021-11-04 06:43:40,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:43:40,530 INFO L225 Difference]: With dead ends: 32058 [2021-11-04 06:43:40,531 INFO L226 Difference]: Without dead ends: 20285 [2021-11-04 06:43:40,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:43:40,553 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5787 mSDsluCounter, 9010 mSDsCounter, 0 mSdLazyCounter, 18141 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83497.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5787 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 132.82ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18141 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93942.42ms IncrementalHoareTripleChecker+Time [2021-11-04 06:43:40,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5787 Valid, 0 Invalid, 18147 Unknown, 0 Unchecked, 132.82ms Time], IncrementalHoareTripleChecker [2 Valid, 18141 Invalid, 4 Unknown, 0 Unchecked, 93942.42ms Time] [2021-11-04 06:43:40,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20285 states. [2021-11-04 06:43:40,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20285 to 20041. [2021-11-04 06:43:40,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20041 states, 19933 states have (on average 1.3469623237846786) internal successors, (26849), 20040 states have internal predecessors, (26849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:43:40,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20041 states to 20041 states and 26849 transitions. [2021-11-04 06:43:40,923 INFO L78 Accepts]: Start accepts. Automaton has 20041 states and 26849 transitions. Word has length 86 [2021-11-04 06:43:40,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:43:40,923 INFO L470 AbstractCegarLoop]: Abstraction has 20041 states and 26849 transitions. [2021-11-04 06:43:40,924 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) [2021-11-04 06:43:40,924 INFO L276 IsEmpty]: Start isEmpty. Operand 20041 states and 26849 transitions. [2021-11-04 06:43:40,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-04 06:43:40,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:43:40,925 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] [2021-11-04 06:43:40,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 06:43:40,925 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)] === [2021-11-04 06:43:40,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:43:40,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2049540884, now seen corresponding path program 1 times [2021-11-04 06:43:40,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:43:40,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656436070] [2021-11-04 06:43:40,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:43:40,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:43:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:43:41,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-04 06:43:41,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:43:41,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656436070] [2021-11-04 06:43:41,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656436070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:43:41,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:43:41,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:43:41,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532044402] [2021-11-04 06:43:41,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:43:41,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:43:41,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:43:41,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:43:41,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:43:41,204 INFO L87 Difference]: Start difference. First operand 20041 states and 26849 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) [2021-11-04 06:43:49,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:43:52,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:43:54,931 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:44:32,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 06:45:27,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:45:27,802 INFO L93 Difference]: Finished difference Result 38085 states and 51237 transitions. [2021-11-04 06:45:27,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:45:27,802 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 [2021-11-04 06:45:27,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:45:27,871 INFO L225 Difference]: With dead ends: 38085 [2021-11-04 06:45:27,871 INFO L226 Difference]: Without dead ends: 37951 [2021-11-04 06:45:27,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.45ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:45:27,887 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7266 mSDsluCounter, 8640 mSDsCounter, 0 mSdLazyCounter, 18612 mSolverCounterSat, 142 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91550.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7266 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 132.84ms SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 18612 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104722.44ms IncrementalHoareTripleChecker+Time [2021-11-04 06:45:27,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7266 Valid, 0 Invalid, 18758 Unknown, 0 Unchecked, 132.84ms Time], IncrementalHoareTripleChecker [142 Valid, 18612 Invalid, 4 Unknown, 0 Unchecked, 104722.44ms Time] [2021-11-04 06:45:27,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37951 states. [2021-11-04 06:45:28,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37951 to 37899. [2021-11-04 06:45:28,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37899 states, 37791 states have (on average 1.3471990685612976) internal successors, (50912), 37898 states have internal predecessors, (50912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:45:28,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37899 states to 37899 states and 50912 transitions. [2021-11-04 06:45:28,460 INFO L78 Accepts]: Start accepts. Automaton has 37899 states and 50912 transitions. Word has length 88 [2021-11-04 06:45:28,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:45:28,460 INFO L470 AbstractCegarLoop]: Abstraction has 37899 states and 50912 transitions. [2021-11-04 06:45:28,460 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) [2021-11-04 06:45:28,460 INFO L276 IsEmpty]: Start isEmpty. Operand 37899 states and 50912 transitions. [2021-11-04 06:45:28,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-04 06:45:28,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:45:28,461 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] [2021-11-04 06:45:28,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 06:45:28,462 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)] === [2021-11-04 06:45:28,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:45:28,462 INFO L85 PathProgramCache]: Analyzing trace with hash 888770242, now seen corresponding path program 1 times [2021-11-04 06:45:28,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:45:28,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220797480] [2021-11-04 06:45:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:45:28,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:45:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:45:28,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-04 06:45:28,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:45:28,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220797480] [2021-11-04 06:45:28,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220797480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:45:28,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:45:28,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:45:28,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855240876] [2021-11-04 06:45:28,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:45:28,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:45:28,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:45:28,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:45:28,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:45:28,752 INFO L87 Difference]: Start difference. First operand 37899 states and 50912 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) [2021-11-04 06:45:36,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:45:39,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:45:42,123 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 [] [2021-11-04 06:47:15,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:47:15,531 INFO L93 Difference]: Finished difference Result 73378 states and 98728 transitions. [2021-11-04 06:47:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:47:15,532 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 [2021-11-04 06:47:15,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:47:15,715 INFO L225 Difference]: With dead ends: 73378 [2021-11-04 06:47:15,715 INFO L226 Difference]: Without dead ends: 73376 [2021-11-04 06:47:15,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.29ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:47:15,751 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6730 mSDsluCounter, 9018 mSDsCounter, 0 mSdLazyCounter, 18124 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90311.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6730 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 130.48ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18124 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104567.09ms IncrementalHoareTripleChecker+Time [2021-11-04 06:47:15,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6730 Valid, 0 Invalid, 18128 Unknown, 0 Unchecked, 130.48ms Time], IncrementalHoareTripleChecker [1 Valid, 18124 Invalid, 3 Unknown, 0 Unchecked, 104567.09ms Time] [2021-11-04 06:47:15,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73376 states. [2021-11-04 06:47:17,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73376 to 73208. [2021-11-04 06:47:17,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73208 states, 73100 states have (on average 1.3494117647058823) internal successors, (98642), 73207 states have internal predecessors, (98642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:47:17,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73208 states to 73208 states and 98642 transitions. [2021-11-04 06:47:17,326 INFO L78 Accepts]: Start accepts. Automaton has 73208 states and 98642 transitions. Word has length 89 [2021-11-04 06:47:17,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:47:17,327 INFO L470 AbstractCegarLoop]: Abstraction has 73208 states and 98642 transitions. [2021-11-04 06:47:17,327 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) [2021-11-04 06:47:17,327 INFO L276 IsEmpty]: Start isEmpty. Operand 73208 states and 98642 transitions. [2021-11-04 06:47:17,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-04 06:47:17,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:47:17,328 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] [2021-11-04 06:47:17,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 06:47:17,328 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)] === [2021-11-04 06:47:17,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:47:17,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1782101942, now seen corresponding path program 1 times [2021-11-04 06:47:17,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:47:17,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593510755] [2021-11-04 06:47:17,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:47:17,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:47:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:47:17,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-04 06:47:17,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:47:17,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593510755] [2021-11-04 06:47:17,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593510755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:47:17,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:47:17,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:47:17,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249298404] [2021-11-04 06:47:17,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:47:17,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:47:17,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:47:17,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:47:17,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:47:17,770 INFO L87 Difference]: Start difference. First operand 73208 states and 98642 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) [2021-11-04 06:47:26,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:47:29,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:47:32,137 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:49:02,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:49:02,438 INFO L93 Difference]: Finished difference Result 73379 states and 98729 transitions. [2021-11-04 06:49:02,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:49:02,438 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 [2021-11-04 06:49:02,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:49:02,611 INFO L225 Difference]: With dead ends: 73379 [2021-11-04 06:49:02,611 INFO L226 Difference]: Without dead ends: 73377 [2021-11-04 06:49:02,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:49:02,637 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6727 mSDsluCounter, 9021 mSDsCounter, 0 mSdLazyCounter, 18127 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87308.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6727 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 125.85ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18127 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102577.17ms IncrementalHoareTripleChecker+Time [2021-11-04 06:49:02,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6727 Valid, 0 Invalid, 18131 Unknown, 0 Unchecked, 125.85ms Time], IncrementalHoareTripleChecker [1 Valid, 18127 Invalid, 3 Unknown, 0 Unchecked, 102577.17ms Time] [2021-11-04 06:49:02,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73377 states. [2021-11-04 06:49:03,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73377 to 73209. [2021-11-04 06:49:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73209 states, 73101 states have (on average 1.3494069848565684) internal successors, (98643), 73208 states have internal predecessors, (98643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:49:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73209 states to 73209 states and 98643 transitions. [2021-11-04 06:49:04,212 INFO L78 Accepts]: Start accepts. Automaton has 73209 states and 98643 transitions. Word has length 90 [2021-11-04 06:49:04,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:49:04,217 INFO L470 AbstractCegarLoop]: Abstraction has 73209 states and 98643 transitions. [2021-11-04 06:49:04,217 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) [2021-11-04 06:49:04,217 INFO L276 IsEmpty]: Start isEmpty. Operand 73209 states and 98643 transitions. [2021-11-04 06:49:04,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-04 06:49:04,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:49:04,218 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] [2021-11-04 06:49:04,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 06:49:04,219 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)] === [2021-11-04 06:49:04,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:49:04,219 INFO L85 PathProgramCache]: Analyzing trace with hash -589386420, now seen corresponding path program 1 times [2021-11-04 06:49:04,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:49:04,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935576645] [2021-11-04 06:49:04,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:49:04,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:49:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:49:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-04 06:49:04,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:49:04,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935576645] [2021-11-04 06:49:04,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935576645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:49:04,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:49:04,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:49:04,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753574467] [2021-11-04 06:49:04,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:49:04,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:49:04,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:49:04,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:49:04,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:49:04,411 INFO L87 Difference]: Start difference. First operand 73209 states and 98643 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) [2021-11-04 06:49:13,640 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:49:16,260 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:49:18,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:50:17,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 06:50:29,002 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 [] [2021-11-04 06:50:57,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:50:57,318 INFO L93 Difference]: Finished difference Result 73380 states and 98730 transitions. [2021-11-04 06:50:57,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:50:57,319 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 [2021-11-04 06:50:57,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:50:57,469 INFO L225 Difference]: With dead ends: 73380 [2021-11-04 06:50:57,469 INFO L226 Difference]: Without dead ends: 73378 [2021-11-04 06:50:57,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:50:57,494 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6724 mSDsluCounter, 9024 mSDsCounter, 0 mSdLazyCounter, 18128 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93597.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6724 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 121.60ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18128 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110822.74ms IncrementalHoareTripleChecker+Time [2021-11-04 06:50:57,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6724 Valid, 0 Invalid, 18134 Unknown, 0 Unchecked, 121.60ms Time], IncrementalHoareTripleChecker [1 Valid, 18128 Invalid, 5 Unknown, 0 Unchecked, 110822.74ms Time] [2021-11-04 06:50:57,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73378 states. [2021-11-04 06:50:58,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73378 to 73210. [2021-11-04 06:50:58,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73210 states, 73102 states have (on average 1.3494022051380263) internal successors, (98644), 73209 states have internal predecessors, (98644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:50:59,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73210 states to 73210 states and 98644 transitions. [2021-11-04 06:50:59,023 INFO L78 Accepts]: Start accepts. Automaton has 73210 states and 98644 transitions. Word has length 91 [2021-11-04 06:50:59,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:50:59,024 INFO L470 AbstractCegarLoop]: Abstraction has 73210 states and 98644 transitions. [2021-11-04 06:50:59,024 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) [2021-11-04 06:50:59,024 INFO L276 IsEmpty]: Start isEmpty. Operand 73210 states and 98644 transitions. [2021-11-04 06:50:59,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-04 06:50:59,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:50:59,029 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] [2021-11-04 06:50:59,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 06:50:59,029 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)] === [2021-11-04 06:50:59,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:50:59,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1091081600, now seen corresponding path program 1 times [2021-11-04 06:50:59,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:50:59,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814701809] [2021-11-04 06:50:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:50:59,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:50:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:50:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-04 06:50:59,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:50:59,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814701809] [2021-11-04 06:50:59,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814701809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:50:59,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:50:59,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:50:59,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129468721] [2021-11-04 06:50:59,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:50:59,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:50:59,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:50:59,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:50:59,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:50:59,203 INFO L87 Difference]: Start difference. First operand 73210 states and 98644 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) [2021-11-04 06:51:08,062 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 [] [2021-11-04 06:51:10,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15