./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.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 a49fa2cb2318ea112688f7105056cfdc1f55c42e8f926c44139a3fa1f7774bac --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 04:25:21,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 04:25:21,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 04:25:21,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 04:25:21,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 04:25:21,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 04:25:21,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 04:25:21,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 04:25:21,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 04:25:21,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 04:25:21,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 04:25:21,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 04:25:21,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 04:25:21,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 04:25:21,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 04:25:21,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 04:25:21,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 04:25:21,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 04:25:21,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 04:25:21,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 04:25:21,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 04:25:21,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 04:25:21,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 04:25:21,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 04:25:21,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 04:25:21,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 04:25:21,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 04:25:21,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 04:25:21,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 04:25:21,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 04:25:21,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 04:25:21,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 04:25:21,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 04:25:21,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 04:25:21,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 04:25:21,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 04:25:21,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 04:25:21,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 04:25:21,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 04:25:21,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 04:25:21,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 04:25:21,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 04:25:21,122 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 04:25:21,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 04:25:21,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 04:25:21,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 04:25:21,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 04:25:21,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 04:25:21,123 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 04:25:21,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 04:25:21,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 04:25:21,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 04:25:21,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 04:25:21,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 04:25:21,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 04:25:21,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 04:25:21,125 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 04:25:21,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 04:25:21,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 04:25:21,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 04:25:21,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 04:25:21,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:25:21,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 04:25:21,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 04:25:21,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 04:25:21,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 04:25:21,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 04:25:21,127 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 04:25:21,127 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 04:25:21,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 04:25:21,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 04:25:21,128 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49fa2cb2318ea112688f7105056cfdc1f55c42e8f926c44139a3fa1f7774bac [2021-11-04 04:25:21,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 04:25:21,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 04:25:21,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 04:25:21,345 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 04:25:21,346 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 04:25:21,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-04 04:25:21,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3264228a8/dcd46d2cbd784934bd69743bdefd61e8/FLAG221890ce9 [2021-11-04 04:25:22,056 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 04:25:22,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-04 04:25:22,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3264228a8/dcd46d2cbd784934bd69743bdefd61e8/FLAG221890ce9 [2021-11-04 04:25:22,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3264228a8/dcd46d2cbd784934bd69743bdefd61e8 [2021-11-04 04:25:22,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 04:25:22,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 04:25:22,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 04:25:22,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 04:25:22,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 04:25:22,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:25:22" (1/1) ... [2021-11-04 04:25:22,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695cf228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:25:22, skipping insertion in model container [2021-11-04 04:25:22,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:25:22" (1/1) ... [2021-11-04 04:25:22,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 04:25:22,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 04:25:23,361 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[174455,174468] [2021-11-04 04:25:25,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:25:25,349 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 04:25:25,408 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[174455,174468] [2021-11-04 04:25:25,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:25:25,850 INFO L208 MainTranslator]: Completed translation [2021-11-04 04:25:25,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:25:25 WrapperNode [2021-11-04 04:25:25,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 04:25:25,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 04:25:25,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 04:25:25,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 04:25:25,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:25:25" (1/1) ... [2021-11-04 04:25:26,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:25:25" (1/1) ... [2021-11-04 04:25:26,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 04:25:26,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 04:25:26,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 04:25:26,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 04:25:26,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:25:25" (1/1) ... [2021-11-04 04:25:26,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:25:25" (1/1) ... [2021-11-04 04:25:27,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:25:25" (1/1) ... [2021-11-04 04:25:27,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:25:25" (1/1) ... [2021-11-04 04:25:27,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:25:25" (1/1) ... [2021-11-04 04:25:27,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:25:25" (1/1) ... [2021-11-04 04:25:27,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:25:25" (1/1) ... [2021-11-04 04:25:27,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 04:25:27,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 04:25:27,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 04:25:27,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 04:25:27,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:25:25" (1/1) ... [2021-11-04 04:25:27,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:25:27,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:25:27,776 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 04:25:27,804 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 04:25:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2021-11-04 04:25:27,817 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2021-11-04 04:25:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-04 04:25:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2021-11-04 04:25:27,819 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2021-11-04 04:25:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 04:25:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 04:25:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 04:25:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 04:25:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 04:25:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 04:25:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 04:25:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 04:25:27,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 04:25:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 04:25:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 04:25:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 04:25:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 04:25:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 04:25:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 04:25:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 04:25:38,315 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 04:25:38,315 INFO L299 CfgBuilder]: Removed 5688 assume(true) statements. [2021-11-04 04:25:38,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:25:38 BoogieIcfgContainer [2021-11-04 04:25:38,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 04:25:38,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 04:25:38,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 04:25:38,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 04:25:38,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 04:25:22" (1/3) ... [2021-11-04 04:25:38,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d74f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:25:38, skipping insertion in model container [2021-11-04 04:25:38,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:25:25" (2/3) ... [2021-11-04 04:25:38,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d74f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:25:38, skipping insertion in model container [2021-11-04 04:25:38,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:25:38" (3/3) ... [2021-11-04 04:25:38,331 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-04 04:25:38,335 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 04:25:38,335 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-04 04:25:38,387 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 04:25:38,394 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 04:25:38,394 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-04 04:25:38,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 6328 states, 6304 states have (on average 1.374524111675127) internal successors, (8665), 6305 states have internal predecessors, (8665), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-04 04:25:38,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-04 04:25:38,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:25:38,481 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] [2021-11-04 04:25:38,482 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:25:38,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:25:38,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1442246229, now seen corresponding path program 1 times [2021-11-04 04:25:38,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:25:38,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345665725] [2021-11-04 04:25:38,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:25:38,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:25:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:25:39,155 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 04:25:39,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:25:39,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345665725] [2021-11-04 04:25:39,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345665725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:25:39,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:25:39,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:25:39,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802799962] [2021-11-04 04:25:39,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:25:39,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:25:39,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:25:39,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:25:39,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:25:39,201 INFO L87 Difference]: Start difference. First operand has 6328 states, 6304 states have (on average 1.374524111675127) internal successors, (8665), 6305 states have internal predecessors, (8665), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 04:25:41,390 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:26:29,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:26:29,282 INFO L93 Difference]: Finished difference Result 12652 states and 17405 transitions. [2021-11-04 04:26:29,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:26:29,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-04 04:26:29,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:26:29,325 INFO L225 Difference]: With dead ends: 12652 [2021-11-04 04:26:29,325 INFO L226 Difference]: Without dead ends: 5867 [2021-11-04 04:26:29,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:26:29,344 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 0 mSDsluCounter, 8538 mSDsCounter, 0 mSdLazyCounter, 16247 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44951.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 16248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 113.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16247 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49036.17ms IncrementalHoareTripleChecker+Time [2021-11-04 04:26:29,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 924 Invalid, 16248 Unknown, 0 Unchecked, 113.11ms Time], IncrementalHoareTripleChecker [0 Valid, 16247 Invalid, 1 Unknown, 0 Unchecked, 49036.17ms Time] [2021-11-04 04:26:29,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5867 states. [2021-11-04 04:26:29,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5867 to 5867. [2021-11-04 04:26:29,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5867 states, 5844 states have (on average 1.3114305270362765) internal successors, (7664), 5844 states have internal predecessors, (7664), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-04 04:26:29,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5867 states to 5867 states and 7704 transitions. [2021-11-04 04:26:29,534 INFO L78 Accepts]: Start accepts. Automaton has 5867 states and 7704 transitions. Word has length 20 [2021-11-04 04:26:29,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:26:29,535 INFO L470 AbstractCegarLoop]: Abstraction has 5867 states and 7704 transitions. [2021-11-04 04:26:29,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 04:26:29,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5867 states and 7704 transitions. [2021-11-04 04:26:29,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-04 04:26:29,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:26:29,542 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] [2021-11-04 04:26:29,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 04:26:29,543 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:26:29,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:26:29,544 INFO L85 PathProgramCache]: Analyzing trace with hash 129900104, now seen corresponding path program 1 times [2021-11-04 04:26:29,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:26:29,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416412627] [2021-11-04 04:26:29,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:26:29,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:26:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:26:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 04:26:30,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:26:30,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416412627] [2021-11-04 04:26:30,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416412627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:26:30,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:26:30,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:26:30,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984131904] [2021-11-04 04:26:30,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:26:30,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:26:30,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:26:30,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:26:30,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:26:30,136 INFO L87 Difference]: Start difference. First operand 5867 states and 7704 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 04:26:32,252 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 04:27:26,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:27:26,454 INFO L93 Difference]: Finished difference Result 17562 states and 23068 transitions. [2021-11-04 04:27:26,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:27:26,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-04 04:27:26,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:27:26,502 INFO L225 Difference]: With dead ends: 17562 [2021-11-04 04:27:26,503 INFO L226 Difference]: Without dead ends: 11706 [2021-11-04 04:27:26,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:27:26,519 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 7667 mSDsluCounter, 7688 mSDsCounter, 0 mSdLazyCounter, 15318 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49675.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7667 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 15322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 94.69ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15318 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54940.72ms IncrementalHoareTripleChecker+Time [2021-11-04 04:27:26,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7667 Valid, 100 Invalid, 15322 Unknown, 0 Unchecked, 94.69ms Time], IncrementalHoareTripleChecker [3 Valid, 15318 Invalid, 1 Unknown, 0 Unchecked, 54940.72ms Time] [2021-11-04 04:27:26,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11706 states. [2021-11-04 04:27:26,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11706 to 11706. [2021-11-04 04:27:26,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11706 states, 11661 states have (on average 1.3115513249292514) internal successors, (15294), 11661 states have internal predecessors, (15294), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-04 04:27:26,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11706 states to 11706 states and 15374 transitions. [2021-11-04 04:27:26,885 INFO L78 Accepts]: Start accepts. Automaton has 11706 states and 15374 transitions. Word has length 21 [2021-11-04 04:27:26,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:27:26,886 INFO L470 AbstractCegarLoop]: Abstraction has 11706 states and 15374 transitions. [2021-11-04 04:27:26,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 04:27:26,888 INFO L276 IsEmpty]: Start isEmpty. Operand 11706 states and 15374 transitions. [2021-11-04 04:27:26,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-04 04:27:26,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:27:26,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:27:26,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 04:27:26,894 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:27:26,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:27:26,895 INFO L85 PathProgramCache]: Analyzing trace with hash -683396018, now seen corresponding path program 1 times [2021-11-04 04:27:26,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:27:26,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429911075] [2021-11-04 04:27:26,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:27:26,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:27:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:27:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 04:27:27,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:27:27,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429911075] [2021-11-04 04:27:27,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429911075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:27:27,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:27:27,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 04:27:27,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668142609] [2021-11-04 04:27:27,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:27:27,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 04:27:27,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:27:27,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 04:27:27,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:27:27,420 INFO L87 Difference]: Start difference. First operand 11706 states and 15374 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:27:29,555 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 04:29:15,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:29:15,281 INFO L93 Difference]: Finished difference Result 35094 states and 46095 transitions. [2021-11-04 04:29:15,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 04:29:15,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-04 04:29:15,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:29:15,353 INFO L225 Difference]: With dead ends: 35094 [2021-11-04 04:29:15,354 INFO L226 Difference]: Without dead ends: 23394 [2021-11-04 04:29:15,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 150.65ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-04 04:29:15,377 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 7655 mSDsluCounter, 22937 mSDsCounter, 0 mSdLazyCounter, 30661 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96950.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7655 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 30668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 202.31ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30661 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106077.49ms IncrementalHoareTripleChecker+Time [2021-11-04 04:29:15,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7655 Valid, 220 Invalid, 30668 Unknown, 0 Unchecked, 202.31ms Time], IncrementalHoareTripleChecker [6 Valid, 30661 Invalid, 1 Unknown, 0 Unchecked, 106077.49ms Time] [2021-11-04 04:29:15,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23394 states. [2021-11-04 04:29:15,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23394 to 23314. [2021-11-04 04:29:15,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23314 states, 23225 states have (on average 1.311259418729817) internal successors, (30454), 23225 states have internal predecessors, (30454), 80 states have call successors, (80), 8 states have call predecessors, (80), 8 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-04 04:29:15,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23314 states to 23314 states and 30614 transitions. [2021-11-04 04:29:15,811 INFO L78 Accepts]: Start accepts. Automaton has 23314 states and 30614 transitions. Word has length 25 [2021-11-04 04:29:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:29:15,812 INFO L470 AbstractCegarLoop]: Abstraction has 23314 states and 30614 transitions. [2021-11-04 04:29:15,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:29:15,812 INFO L276 IsEmpty]: Start isEmpty. Operand 23314 states and 30614 transitions. [2021-11-04 04:29:15,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-04 04:29:15,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:29:15,826 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:29:15,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 04:29:15,826 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:29:15,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:29:15,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1358902652, now seen corresponding path program 1 times [2021-11-04 04:29:15,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:29:15,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915874638] [2021-11-04 04:29:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:29:15,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:29:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:29:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 04:29:16,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:29:16,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915874638] [2021-11-04 04:29:16,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915874638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:29:16,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:29:16,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:29:16,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908252654] [2021-11-04 04:29:16,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:29:16,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:29:16,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:29:16,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:29:16,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:29:16,225 INFO L87 Difference]: Start difference. First operand 23314 states and 30614 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 04:29:18,359 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 04:30:21,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:30:21,308 INFO L93 Difference]: Finished difference Result 61992 states and 81276 transitions. [2021-11-04 04:30:21,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:30:21,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-04 04:30:21,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:30:21,468 INFO L225 Difference]: With dead ends: 61992 [2021-11-04 04:30:21,468 INFO L226 Difference]: Without dead ends: 38689 [2021-11-04 04:30:21,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:30:21,522 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 5499 mSDsluCounter, 7176 mSDsCounter, 0 mSdLazyCounter, 14887 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56125.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5499 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 14900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.06ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 14887 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63506.19ms IncrementalHoareTripleChecker+Time [2021-11-04 04:30:21,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5499 Valid, 94 Invalid, 14900 Unknown, 0 Unchecked, 80.06ms Time], IncrementalHoareTripleChecker [12 Valid, 14887 Invalid, 1 Unknown, 0 Unchecked, 63506.19ms Time] [2021-11-04 04:30:21,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38689 states. [2021-11-04 04:30:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38689 to 37958. [2021-11-04 04:30:22,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37958 states, 37813 states have (on average 1.3079893158437574) internal successors, (49459), 37817 states have internal predecessors, (49459), 132 states have call successors, (132), 12 states have call predecessors, (132), 12 states have return successors, (132), 128 states have call predecessors, (132), 132 states have call successors, (132) [2021-11-04 04:30:22,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37958 states to 37958 states and 49723 transitions. [2021-11-04 04:30:22,195 INFO L78 Accepts]: Start accepts. Automaton has 37958 states and 49723 transitions. Word has length 66 [2021-11-04 04:30:22,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:30:22,196 INFO L470 AbstractCegarLoop]: Abstraction has 37958 states and 49723 transitions. [2021-11-04 04:30:22,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 04:30:22,196 INFO L276 IsEmpty]: Start isEmpty. Operand 37958 states and 49723 transitions. [2021-11-04 04:30:22,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-04 04:30:22,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:30:22,211 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:22,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 04:30:22,211 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:30:22,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:30:22,212 INFO L85 PathProgramCache]: Analyzing trace with hash -630713150, now seen corresponding path program 1 times [2021-11-04 04:30:22,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:30:22,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813462625] [2021-11-04 04:30:22,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:30:22,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:30:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:30:22,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 04:30:22,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:30:22,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813462625] [2021-11-04 04:30:22,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813462625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:30:22,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:30:22,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:30:22,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479302021] [2021-11-04 04:30:22,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:30:22,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:30:22,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:30:22,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:30:22,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:30:22,547 INFO L87 Difference]: Start difference. First operand 37958 states and 49723 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 04:30:24,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:31:35,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:31:35,259 INFO L93 Difference]: Finished difference Result 101520 states and 132891 transitions. [2021-11-04 04:31:35,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:31:35,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-04 04:31:35,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:31:35,421 INFO L225 Difference]: With dead ends: 101520 [2021-11-04 04:31:35,422 INFO L226 Difference]: Without dead ends: 63573 [2021-11-04 04:31:35,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:31:35,495 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 5242 mSDsluCounter, 7683 mSDsCounter, 0 mSdLazyCounter, 17403 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62263.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5242 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 17405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.01ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17403 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70683.72ms IncrementalHoareTripleChecker+Time [2021-11-04 04:31:35,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5242 Valid, 96 Invalid, 17405 Unknown, 0 Unchecked, 80.01ms Time], IncrementalHoareTripleChecker [1 Valid, 17403 Invalid, 1 Unknown, 0 Unchecked, 70683.72ms Time] [2021-11-04 04:31:35,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63573 states. [2021-11-04 04:31:36,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63573 to 63566. [2021-11-04 04:31:36,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63566 states, 63381 states have (on average 1.3070005206607658) internal successors, (82839), 63385 states have internal predecessors, (82839), 164 states have call successors, (164), 20 states have call predecessors, (164), 20 states have return successors, (164), 160 states have call predecessors, (164), 164 states have call successors, (164) [2021-11-04 04:31:37,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63566 states to 63566 states and 83167 transitions. [2021-11-04 04:31:37,036 INFO L78 Accepts]: Start accepts. Automaton has 63566 states and 83167 transitions. Word has length 85 [2021-11-04 04:31:37,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:31:37,038 INFO L470 AbstractCegarLoop]: Abstraction has 63566 states and 83167 transitions. [2021-11-04 04:31:37,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 04:31:37,039 INFO L276 IsEmpty]: Start isEmpty. Operand 63566 states and 83167 transitions. [2021-11-04 04:31:37,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 04:31:37,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:31:37,059 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:37,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 04:31:37,059 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:31:37,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:31:37,060 INFO L85 PathProgramCache]: Analyzing trace with hash -330724120, now seen corresponding path program 1 times [2021-11-04 04:31:37,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:31:37,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238539959] [2021-11-04 04:31:37,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:31:37,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:31:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:31:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 04:31:37,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:31:37,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238539959] [2021-11-04 04:31:37,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238539959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:31:37,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:31:37,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:31:37,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292269404] [2021-11-04 04:31:37,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:31:37,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:31:37,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:31:37,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:31:37,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:31:37,689 INFO L87 Difference]: Start difference. First operand 63566 states and 83167 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:31:39,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:32:59,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:32:59,766 INFO L93 Difference]: Finished difference Result 152824 states and 199939 transitions. [2021-11-04 04:32:59,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:32:59,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-04 04:32:59,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:33:00,097 INFO L225 Difference]: With dead ends: 152824 [2021-11-04 04:33:00,098 INFO L226 Difference]: Without dead ends: 89269 [2021-11-04 04:33:00,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.15ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:33:00,174 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 6162 mSDsluCounter, 6770 mSDsCounter, 0 mSdLazyCounter, 19653 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69740.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6162 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 19662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 94.32ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 19653 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79759.00ms IncrementalHoareTripleChecker+Time [2021-11-04 04:33:00,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6162 Valid, 72 Invalid, 19662 Unknown, 0 Unchecked, 94.32ms Time], IncrementalHoareTripleChecker [8 Valid, 19653 Invalid, 1 Unknown, 0 Unchecked, 79759.00ms Time] [2021-11-04 04:33:00,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89269 states. [2021-11-04 04:33:01,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89269 to 89262. [2021-11-04 04:33:01,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89262 states, 89037 states have (on average 1.3066365668205353) internal successors, (116339), 89041 states have internal predecessors, (116339), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-04 04:33:01,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89262 states to 89262 states and 116731 transitions. [2021-11-04 04:33:01,951 INFO L78 Accepts]: Start accepts. Automaton has 89262 states and 116731 transitions. Word has length 97 [2021-11-04 04:33:01,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:33:01,951 INFO L470 AbstractCegarLoop]: Abstraction has 89262 states and 116731 transitions. [2021-11-04 04:33:01,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:33:01,951 INFO L276 IsEmpty]: Start isEmpty. Operand 89262 states and 116731 transitions. [2021-11-04 04:33:01,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-04 04:33:01,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:33:01,987 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:33:01,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 04:33:01,987 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:33:01,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:33:01,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1766627619, now seen corresponding path program 1 times [2021-11-04 04:33:01,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:33:01,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976474803] [2021-11-04 04:33:01,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:33:01,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:33:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:33:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 04:33:02,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:33:02,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976474803] [2021-11-04 04:33:02,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976474803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:33:02,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:33:02,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 04:33:02,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603294253] [2021-11-04 04:33:02,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:33:02,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 04:33:02,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:33:02,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 04:33:02,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:33:02,481 INFO L87 Difference]: Start difference. First operand 89262 states and 116731 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:33:04,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:34:56,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:34:56,087 INFO L93 Difference]: Finished difference Result 208580 states and 272803 transitions. [2021-11-04 04:34:56,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 04:34:56,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-04 04:34:56,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:34:56,410 INFO L225 Difference]: With dead ends: 208580 [2021-11-04 04:34:56,410 INFO L226 Difference]: Without dead ends: 119329 [2021-11-04 04:34:56,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.97ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:34:56,520 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 11348 mSDsluCounter, 16385 mSDsCounter, 0 mSdLazyCounter, 30087 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97556.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11348 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 30100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 202.87ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 30087 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110374.07ms IncrementalHoareTripleChecker+Time [2021-11-04 04:34:56,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11348 Valid, 188 Invalid, 30100 Unknown, 0 Unchecked, 202.87ms Time], IncrementalHoareTripleChecker [12 Valid, 30087 Invalid, 1 Unknown, 0 Unchecked, 110374.07ms Time] [2021-11-04 04:34:56,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119329 states. [2021-11-04 04:34:58,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119329 to 89278. [2021-11-04 04:34:58,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89278 states, 89053 states have (on average 1.306581473953713) internal successors, (116355), 89057 states have internal predecessors, (116355), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-04 04:34:58,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89278 states to 89278 states and 116747 transitions. [2021-11-04 04:34:58,789 INFO L78 Accepts]: Start accepts. Automaton has 89278 states and 116747 transitions. Word has length 110 [2021-11-04 04:34:58,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:34:58,791 INFO L470 AbstractCegarLoop]: Abstraction has 89278 states and 116747 transitions. [2021-11-04 04:34:58,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:34:58,791 INFO L276 IsEmpty]: Start isEmpty. Operand 89278 states and 116747 transitions. [2021-11-04 04:34:58,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-04 04:34:58,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:34:58,814 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:34:58,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 04:34:58,814 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:34:58,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:34:58,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1292418325, now seen corresponding path program 1 times [2021-11-04 04:34:58,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:34:58,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206062890] [2021-11-04 04:34:58,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:34:58,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:34:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:34:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 04:34:59,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:34:59,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206062890] [2021-11-04 04:34:59,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206062890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:34:59,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:34:59,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 04:34:59,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484048687] [2021-11-04 04:34:59,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:34:59,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 04:34:59,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:34:59,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 04:34:59,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:34:59,276 INFO L87 Difference]: Start difference. First operand 89278 states and 116747 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 04:35:01,411 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 04:36:51,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:36:51,531 INFO L93 Difference]: Finished difference Result 208620 states and 272843 transitions. [2021-11-04 04:36:51,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 04:36:51,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-04 04:36:51,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:36:51,825 INFO L225 Difference]: With dead ends: 208620 [2021-11-04 04:36:51,826 INFO L226 Difference]: Without dead ends: 119353 [2021-11-04 04:36:52,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.17ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:36:52,079 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 11348 mSDsluCounter, 16299 mSDsCounter, 0 mSdLazyCounter, 27928 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94643.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11348 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 27942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 191.37ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 27928 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108680.98ms IncrementalHoareTripleChecker+Time [2021-11-04 04:36:52,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11348 Valid, 172 Invalid, 27942 Unknown, 0 Unchecked, 191.37ms Time], IncrementalHoareTripleChecker [13 Valid, 27928 Invalid, 1 Unknown, 0 Unchecked, 108680.98ms Time] [2021-11-04 04:36:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119353 states. [2021-11-04 04:36:54,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119353 to 89278. [2021-11-04 04:36:54,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89278 states, 89053 states have (on average 1.306581473953713) internal successors, (116355), 89057 states have internal predecessors, (116355), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-04 04:36:54,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89278 states to 89278 states and 116747 transitions. [2021-11-04 04:36:54,317 INFO L78 Accepts]: Start accepts. Automaton has 89278 states and 116747 transitions. Word has length 119 [2021-11-04 04:36:54,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:36:54,317 INFO L470 AbstractCegarLoop]: Abstraction has 89278 states and 116747 transitions. [2021-11-04 04:36:54,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 04:36:54,318 INFO L276 IsEmpty]: Start isEmpty. Operand 89278 states and 116747 transitions. [2021-11-04 04:36:54,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-04 04:36:54,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:36:54,345 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:54,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 04:36:54,345 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:36:54,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:36:54,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1403835628, now seen corresponding path program 1 times [2021-11-04 04:36:54,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:36:54,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923931886] [2021-11-04 04:36:54,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:36:54,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:36:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:36:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 04:36:54,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:36:54,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923931886] [2021-11-04 04:36:54,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923931886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:36:54,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:36:54,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 04:36:54,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507200800] [2021-11-04 04:36:54,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:36:54,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:36:54,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:36:54,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:36:54,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:36:54,840 INFO L87 Difference]: Start difference. First operand 89278 states and 116747 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:36:56,980 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:37:38,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:37:38,765 INFO L93 Difference]: Finished difference Result 178545 states and 233481 transitions. [2021-11-04 04:37:38,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:37:38,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-04 04:37:38,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:37:38,954 INFO L225 Difference]: With dead ends: 178545 [2021-11-04 04:37:38,955 INFO L226 Difference]: Without dead ends: 89278 [2021-11-04 04:37:39,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:37:39,064 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 7663 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7661 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34149.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7663 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 7662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7661 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41418.73ms IncrementalHoareTripleChecker+Time [2021-11-04 04:37:39,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7663 Valid, 40 Invalid, 7662 Unknown, 0 Unchecked, 39.24ms Time], IncrementalHoareTripleChecker [0 Valid, 7661 Invalid, 1 Unknown, 0 Unchecked, 41418.73ms Time] [2021-11-04 04:37:39,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89278 states. [2021-11-04 04:37:40,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89278 to 89278. [2021-11-04 04:37:40,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89278 states, 89053 states have (on average 1.3064916398100008) internal successors, (116347), 89057 states have internal predecessors, (116347), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-04 04:37:41,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89278 states to 89278 states and 116739 transitions. [2021-11-04 04:37:41,140 INFO L78 Accepts]: Start accepts. Automaton has 89278 states and 116739 transitions. Word has length 137 [2021-11-04 04:37:41,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:37:41,140 INFO L470 AbstractCegarLoop]: Abstraction has 89278 states and 116739 transitions. [2021-11-04 04:37:41,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:37:41,140 INFO L276 IsEmpty]: Start isEmpty. Operand 89278 states and 116739 transitions. [2021-11-04 04:37:41,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-04 04:37:41,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:37:41,167 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:37:41,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 04:37:41,167 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:37:41,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:37:41,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1173711182, now seen corresponding path program 1 times [2021-11-04 04:37:41,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:37:41,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452427967] [2021-11-04 04:37:41,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:37:41,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:37:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:37:41,642 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 04:37:41,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:37:41,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452427967] [2021-11-04 04:37:41,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452427967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:37:41,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:37:41,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:37:41,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471050096] [2021-11-04 04:37:41,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:37:41,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:37:41,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:37:41,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:37:41,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:37:41,643 INFO L87 Difference]: Start difference. First operand 89278 states and 116739 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 04:37:43,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:50,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:38:50,341 INFO L93 Difference]: Finished difference Result 178553 states and 233481 transitions. [2021-11-04 04:38:50,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:38:50,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-11-04 04:38:50,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:38:50,538 INFO L225 Difference]: With dead ends: 178553 [2021-11-04 04:38:50,539 INFO L226 Difference]: Without dead ends: 89286 [2021-11-04 04:38:50,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:38:50,782 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 7695 mSDsCounter, 0 mSdLazyCounter, 15321 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56869.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 15322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 73.13ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15321 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66324.13ms IncrementalHoareTripleChecker+Time [2021-11-04 04:38:50,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 15322 Unknown, 0 Unchecked, 73.13ms Time], IncrementalHoareTripleChecker [0 Valid, 15321 Invalid, 1 Unknown, 0 Unchecked, 66324.13ms Time] [2021-11-04 04:38:50,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89286 states. [2021-11-04 04:38:52,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89286 to 89286. [2021-11-04 04:38:52,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89286 states, 89061 states have (on average 1.306464108869202) internal successors, (116355), 89065 states have internal predecessors, (116355), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-04 04:38:52,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89286 states to 89286 states and 116747 transitions. [2021-11-04 04:38:52,859 INFO L78 Accepts]: Start accepts. Automaton has 89286 states and 116747 transitions. Word has length 141 [2021-11-04 04:38:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:38:52,860 INFO L470 AbstractCegarLoop]: Abstraction has 89286 states and 116747 transitions. [2021-11-04 04:38:52,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 04:38:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 89286 states and 116747 transitions. [2021-11-04 04:38:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-04 04:38:52,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:38:52,882 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:38:52,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 04:38:52,882 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:38:52,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:38:52,883 INFO L85 PathProgramCache]: Analyzing trace with hash 402977616, now seen corresponding path program 1 times [2021-11-04 04:38:52,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:38:52,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831136952] [2021-11-04 04:38:52,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:38:52,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:38:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:38:53,376 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 04:38:53,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:38:53,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831136952] [2021-11-04 04:38:53,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831136952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:38:53,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:38:53,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:38:53,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458887480] [2021-11-04 04:38:53,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:38:53,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:38:53,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:38:53,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:38:53,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:38:53,378 INFO L87 Difference]: Start difference. First operand 89286 states and 116747 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 04:38:55,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15