./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.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 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 21:09:18,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 21:09:18,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 21:09:18,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 21:09:18,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 21:09:18,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 21:09:18,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 21:09:18,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 21:09:18,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 21:09:18,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 21:09:18,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 21:09:18,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 21:09:18,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 21:09:18,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 21:09:18,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 21:09:18,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 21:09:18,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 21:09:18,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 21:09:18,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 21:09:18,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 21:09:18,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 21:09:18,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 21:09:18,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 21:09:18,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 21:09:18,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 21:09:18,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 21:09:18,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 21:09:18,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 21:09:18,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 21:09:18,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 21:09:18,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 21:09:18,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 21:09:18,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 21:09:18,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 21:09:18,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 21:09:18,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 21:09:18,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 21:09:18,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 21:09:18,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 21:09:18,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 21:09:18,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 21:09:18,858 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 21:09:18,879 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 21:09:18,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 21:09:18,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 21:09:18,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 21:09:18,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 21:09:18,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 21:09:18,881 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 21:09:18,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 21:09:18,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 21:09:18,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 21:09:18,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 21:09:18,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 21:09:18,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 21:09:18,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 21:09:18,883 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 21:09:18,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 21:09:18,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 21:09:18,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 21:09:18,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 21:09:18,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 21:09:18,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 21:09:18,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 21:09:18,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 21:09:18,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 21:09:18,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 21:09:18,885 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 21:09:18,885 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 21:09:18,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 21:09:18,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 21:09:18,886 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad [2021-11-02 21:09:19,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 21:09:19,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 21:09:19,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 21:09:19,096 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 21:09:19,097 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 21:09:19,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-11-02 21:09:19,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35aa82dd1/f36444f064f84163ada69f40962aee2e/FLAG7391d44e3 [2021-11-02 21:09:19,759 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 21:09:19,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-11-02 21:09:19,796 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35aa82dd1/f36444f064f84163ada69f40962aee2e/FLAG7391d44e3 [2021-11-02 21:09:20,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35aa82dd1/f36444f064f84163ada69f40962aee2e [2021-11-02 21:09:20,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 21:09:20,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 21:09:20,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 21:09:20,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 21:09:20,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 21:09:20,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:20" (1/1) ... [2021-11-02 21:09:20,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c23b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:20, skipping insertion in model container [2021-11-02 21:09:20,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:20" (1/1) ... [2021-11-02 21:09:20,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 21:09:20,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 21:09:21,168 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2021-11-02 21:09:21,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 21:09:21,279 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 21:09:21,522 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2021-11-02 21:09:21,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 21:09:21,582 INFO L208 MainTranslator]: Completed translation [2021-11-02 21:09:21,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:21 WrapperNode [2021-11-02 21:09:21,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 21:09:21,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 21:09:21,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 21:09:21,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 21:09:21,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:21" (1/1) ... [2021-11-02 21:09:21,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:21" (1/1) ... [2021-11-02 21:09:21,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 21:09:21,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 21:09:21,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 21:09:21,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 21:09:21,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:21" (1/1) ... [2021-11-02 21:09:21,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:21" (1/1) ... [2021-11-02 21:09:22,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:21" (1/1) ... [2021-11-02 21:09:22,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:21" (1/1) ... [2021-11-02 21:09:22,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:21" (1/1) ... [2021-11-02 21:09:22,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:21" (1/1) ... [2021-11-02 21:09:22,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:21" (1/1) ... [2021-11-02 21:09:22,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 21:09:22,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 21:09:22,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 21:09:22,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 21:09:22,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:21" (1/1) ... [2021-11-02 21:09:22,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 21:09:22,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 21:09:22,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 21:09:22,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 21:09:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 21:09:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 21:09:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 21:09:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 21:09:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 21:09:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 21:09:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 21:09:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 21:09:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 21:09:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 21:09:22,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 21:09:25,898 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 21:09:25,899 INFO L299 CfgBuilder]: Removed 1242 assume(true) statements. [2021-11-02 21:09:25,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:09:25 BoogieIcfgContainer [2021-11-02 21:09:25,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 21:09:25,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 21:09:25,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 21:09:25,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 21:09:25,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:09:20" (1/3) ... [2021-11-02 21:09:25,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198fa5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:09:25, skipping insertion in model container [2021-11-02 21:09:25,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:21" (2/3) ... [2021-11-02 21:09:25,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198fa5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:09:25, skipping insertion in model container [2021-11-02 21:09:25,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:09:25" (3/3) ... [2021-11-02 21:09:25,910 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-11-02 21:09:25,913 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 21:09:25,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-02 21:09:25,955 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 21:09:25,960 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 21:09:25,961 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-02 21:09:25,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 1974 states, 1968 states have (on average 1.4659552845528456) internal successors, (2885), 1973 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:09:25,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 21:09:25,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:09:26,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:09:26,001 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:09:26,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:09:26,005 INFO L85 PathProgramCache]: Analyzing trace with hash 2042928576, now seen corresponding path program 1 times [2021-11-02 21:09:26,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:09:26,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758145999] [2021-11-02 21:09:26,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:09:26,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:09:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:09:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 21:09:26,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:09:26,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758145999] [2021-11-02 21:09:26,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758145999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:09:26,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:09:26,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:09:26,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557878930] [2021-11-02 21:09:26,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 21:09:26,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:09:26,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 21:09:26,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 21:09:26,565 INFO L87 Difference]: Start difference. First operand has 1974 states, 1968 states have (on average 1.4659552845528456) internal successors, (2885), 1973 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 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) [2021-11-02 21:09:28,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:09:39,086 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:09:39,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:09:39,781 INFO L93 Difference]: Finished difference Result 3944 states and 5765 transitions. [2021-11-02 21:09:39,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 21:09:39,783 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 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 [2021-11-02 21:09:39,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:09:39,802 INFO L225 Difference]: With dead ends: 3944 [2021-11-02 21:09:39,802 INFO L226 Difference]: Without dead ends: 1965 [2021-11-02 21:09:39,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 21:09:39,815 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2861 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11949.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.17ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2861 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12950.74ms IncrementalHoareTripleChecker+Time [2021-11-02 21:09:39,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 2862 Unknown, 0 Unchecked, 18.17ms Time], IncrementalHoareTripleChecker [0 Valid, 2861 Invalid, 1 Unknown, 0 Unchecked, 12950.74ms Time] [2021-11-02 21:09:39,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2021-11-02 21:09:39,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1965. [2021-11-02 21:09:39,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1960 states have (on average 1.4556122448979592) internal successors, (2853), 1964 states have internal predecessors, (2853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:09:39,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 2853 transitions. [2021-11-02 21:09:39,908 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 2853 transitions. Word has length 66 [2021-11-02 21:09:39,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:09:39,908 INFO L470 AbstractCegarLoop]: Abstraction has 1965 states and 2853 transitions. [2021-11-02 21:09:39,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 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) [2021-11-02 21:09:39,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 2853 transitions. [2021-11-02 21:09:39,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 21:09:39,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:09:39,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:09:39,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 21:09:39,913 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:09:39,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:09:39,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1498030002, now seen corresponding path program 1 times [2021-11-02 21:09:39,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:09:39,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386907465] [2021-11-02 21:09:39,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:09:39,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:09:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:09:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 21:09:40,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:09:40,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386907465] [2021-11-02 21:09:40,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386907465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:09:40,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:09:40,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:09:40,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584099099] [2021-11-02 21:09:40,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:09:40,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:09:40,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:09:40,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:09:40,165 INFO L87 Difference]: Start difference. First operand 1965 states and 2853 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) [2021-11-02 21:09:42,208 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:09:44,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:09:59,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:01,451 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:06,980 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:09,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:10:09,113 INFO L93 Difference]: Finished difference Result 3900 states and 5681 transitions. [2021-11-02 21:10:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:10:09,113 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 [2021-11-02 21:10:09,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:10:09,121 INFO L225 Difference]: With dead ends: 3900 [2021-11-02 21:10:09,121 INFO L226 Difference]: Without dead ends: 1971 [2021-11-02 21:10:09,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:10:09,125 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2808 mSDsCounter, 0 mSdLazyCounter, 5698 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26577.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.58ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 5698 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28646.87ms IncrementalHoareTripleChecker+Time [2021-11-02 21:10:09,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5710 Unknown, 0 Unchecked, 40.58ms Time], IncrementalHoareTripleChecker [10 Valid, 5698 Invalid, 2 Unknown, 0 Unchecked, 28646.87ms Time] [2021-11-02 21:10:09,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2021-11-02 21:10:09,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1971. [2021-11-02 21:10:09,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1971 states, 1966 states have (on average 1.4542217700915565) internal successors, (2859), 1970 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:10:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2859 transitions. [2021-11-02 21:10:09,155 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2859 transitions. Word has length 66 [2021-11-02 21:10:09,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:10:09,155 INFO L470 AbstractCegarLoop]: Abstraction has 1971 states and 2859 transitions. [2021-11-02 21:10:09,155 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) [2021-11-02 21:10:09,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2859 transitions. [2021-11-02 21:10:09,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 21:10:09,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:10:09,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:10:09,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 21:10:09,157 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:10:09,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:10:09,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1183311946, now seen corresponding path program 1 times [2021-11-02 21:10:09,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:10:09,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31640046] [2021-11-02 21:10:09,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:10:09,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:10:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:10:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 21:10:09,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:10:09,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31640046] [2021-11-02 21:10:09,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31640046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:10:09,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:10:09,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:10:09,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921801804] [2021-11-02 21:10:09,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:10:09,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:10:09,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:10:09,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:10:09,335 INFO L87 Difference]: Start difference. First operand 1971 states and 2859 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:10:11,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:17,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:20,054 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:29,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:33,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:39,983 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:43,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:43,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:10:43,969 INFO L93 Difference]: Finished difference Result 3903 states and 5678 transitions. [2021-11-02 21:10:43,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:10:43,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-02 21:10:43,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:10:43,976 INFO L225 Difference]: With dead ends: 3903 [2021-11-02 21:10:43,977 INFO L226 Difference]: Without dead ends: 1972 [2021-11-02 21:10:43,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.90ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:10:43,981 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2807 mSDsCounter, 0 mSdLazyCounter, 5701 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32051.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5701 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34351.33ms IncrementalHoareTripleChecker+Time [2021-11-02 21:10:43,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5704 Unknown, 0 Unchecked, 34.53ms Time], IncrementalHoareTripleChecker [0 Valid, 5701 Invalid, 3 Unknown, 0 Unchecked, 34351.33ms Time] [2021-11-02 21:10:43,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2021-11-02 21:10:44,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1972. [2021-11-02 21:10:44,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1967 states have (on average 1.4539908490086426) internal successors, (2860), 1971 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:10:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 2860 transitions. [2021-11-02 21:10:44,020 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 2860 transitions. Word has length 72 [2021-11-02 21:10:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:10:44,020 INFO L470 AbstractCegarLoop]: Abstraction has 1972 states and 2860 transitions. [2021-11-02 21:10:44,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:10:44,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 2860 transitions. [2021-11-02 21:10:44,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 21:10:44,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:10:44,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:10:44,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 21:10:44,022 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:10:44,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:10:44,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1600679370, now seen corresponding path program 1 times [2021-11-02 21:10:44,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:10:44,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549141980] [2021-11-02 21:10:44,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:10:44,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:10:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:10:44,217 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 21:10:44,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:10:44,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549141980] [2021-11-02 21:10:44,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549141980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:10:44,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:10:44,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:10:44,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493806737] [2021-11-02 21:10:44,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:10:44,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:10:44,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:10:44,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:10:44,220 INFO L87 Difference]: Start difference. First operand 1972 states and 2860 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:10:46,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:52,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:11:00,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:11:02,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:11:18,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:11:19,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:11:19,118 INFO L93 Difference]: Finished difference Result 5768 states and 8418 transitions. [2021-11-02 21:11:19,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:11:19,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-02 21:11:19,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:11:19,132 INFO L225 Difference]: With dead ends: 5768 [2021-11-02 21:11:19,133 INFO L226 Difference]: Without dead ends: 3860 [2021-11-02 21:11:19,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:11:19,138 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2763 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 5698 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31322.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2763 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.83ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5698 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34432.92ms IncrementalHoareTripleChecker+Time [2021-11-02 21:11:19,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2763 Valid, 0 Invalid, 5703 Unknown, 0 Unchecked, 59.83ms Time], IncrementalHoareTripleChecker [3 Valid, 5698 Invalid, 2 Unknown, 0 Unchecked, 34432.92ms Time] [2021-11-02 21:11:19,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2021-11-02 21:11:19,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 3858. [2021-11-02 21:11:19,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3853 states have (on average 1.4599013755515182) internal successors, (5625), 3857 states have internal predecessors, (5625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:11:19,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 5625 transitions. [2021-11-02 21:11:19,215 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 5625 transitions. Word has length 73 [2021-11-02 21:11:19,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:11:19,216 INFO L470 AbstractCegarLoop]: Abstraction has 3858 states and 5625 transitions. [2021-11-02 21:11:19,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:11:19,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 5625 transitions. [2021-11-02 21:11:19,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 21:11:19,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:11:19,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:11:19,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 21:11:19,218 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:11:19,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:11:19,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1792504326, now seen corresponding path program 1 times [2021-11-02 21:11:19,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:11:19,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322346277] [2021-11-02 21:11:19,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:11:19,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:11:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:11:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 21:11:19,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:11:19,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322346277] [2021-11-02 21:11:19,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322346277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:11:19,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:11:19,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:11:19,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738404404] [2021-11-02 21:11:19,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:11:19,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:11:19,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:11:19,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:11:19,408 INFO L87 Difference]: Start difference. First operand 3858 states and 5625 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:11:21,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:11:26,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:11:37,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:11:43,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:11:44,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:11:48,070 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:11:53,150 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:11:56,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:11:56,855 INFO L93 Difference]: Finished difference Result 7637 states and 11165 transitions. [2021-11-02 21:11:56,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:11:56,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-02 21:11:56,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:11:56,884 INFO L225 Difference]: With dead ends: 7637 [2021-11-02 21:11:56,885 INFO L226 Difference]: Without dead ends: 7635 [2021-11-02 21:11:56,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:11:56,890 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2772 mSDsluCounter, 2778 mSDsCounter, 0 mSdLazyCounter, 5630 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33395.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2772 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.00ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5630 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36974.46ms IncrementalHoareTripleChecker+Time [2021-11-02 21:11:56,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2772 Valid, 0 Invalid, 5633 Unknown, 0 Unchecked, 32.00ms Time], IncrementalHoareTripleChecker [1 Valid, 5630 Invalid, 2 Unknown, 0 Unchecked, 36974.46ms Time] [2021-11-02 21:11:56,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7635 states. [2021-11-02 21:11:57,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7635 to 7613. [2021-11-02 21:11:57,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7613 states, 7608 states have (on average 1.463459516298633) internal successors, (11134), 7612 states have internal predecessors, (11134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:11:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7613 states to 7613 states and 11134 transitions. [2021-11-02 21:11:57,044 INFO L78 Accepts]: Start accepts. Automaton has 7613 states and 11134 transitions. Word has length 77 [2021-11-02 21:11:57,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:11:57,044 INFO L470 AbstractCegarLoop]: Abstraction has 7613 states and 11134 transitions. [2021-11-02 21:11:57,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:11:57,045 INFO L276 IsEmpty]: Start isEmpty. Operand 7613 states and 11134 transitions. [2021-11-02 21:11:57,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 21:11:57,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:11:57,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:11:57,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 21:11:57,049 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:11:57,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:11:57,050 INFO L85 PathProgramCache]: Analyzing trace with hash 266953698, now seen corresponding path program 1 times [2021-11-02 21:11:57,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:11:57,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276487019] [2021-11-02 21:11:57,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:11:57,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:11:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:11:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 21:11:57,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:11:57,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276487019] [2021-11-02 21:11:57,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276487019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:11:57,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:11:57,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:11:57,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218112804] [2021-11-02 21:11:57,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:11:57,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:11:57,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:11:57,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:11:57,260 INFO L87 Difference]: Start difference. First operand 7613 states and 11134 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:11:59,321 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:12:14,520 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:12:23,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:12:30,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:12:30,798 INFO L93 Difference]: Finished difference Result 7638 states and 11166 transitions. [2021-11-02 21:12:30,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:12:30,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-02 21:12:30,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:12:30,819 INFO L225 Difference]: With dead ends: 7638 [2021-11-02 21:12:30,819 INFO L226 Difference]: Without dead ends: 7636 [2021-11-02 21:12:30,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.88ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:12:30,823 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2769 mSDsluCounter, 2781 mSDsCounter, 0 mSdLazyCounter, 5633 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29138.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2769 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.17ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5633 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33092.40ms IncrementalHoareTripleChecker+Time [2021-11-02 21:12:30,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2769 Valid, 0 Invalid, 5636 Unknown, 0 Unchecked, 32.17ms Time], IncrementalHoareTripleChecker [1 Valid, 5633 Invalid, 2 Unknown, 0 Unchecked, 33092.40ms Time] [2021-11-02 21:12:30,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7636 states. [2021-11-02 21:12:30,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7636 to 7614. [2021-11-02 21:12:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7614 states, 7609 states have (on average 1.4633986069128664) internal successors, (11135), 7613 states have internal predecessors, (11135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:12:30,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7614 states to 7614 states and 11135 transitions. [2021-11-02 21:12:30,963 INFO L78 Accepts]: Start accepts. Automaton has 7614 states and 11135 transitions. Word has length 78 [2021-11-02 21:12:30,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:12:30,964 INFO L470 AbstractCegarLoop]: Abstraction has 7614 states and 11135 transitions. [2021-11-02 21:12:30,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:12:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 7614 states and 11135 transitions. [2021-11-02 21:12:30,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 21:12:30,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:12:30,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:12:30,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 21:12:30,969 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:12:30,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:12:30,970 INFO L85 PathProgramCache]: Analyzing trace with hash -314356988, now seen corresponding path program 1 times [2021-11-02 21:12:30,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:12:30,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597141919] [2021-11-02 21:12:30,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:12:30,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:12:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:12:31,145 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 21:12:31,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:12:31,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597141919] [2021-11-02 21:12:31,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597141919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:12:31,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:12:31,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:12:31,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582421867] [2021-11-02 21:12:31,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:12:31,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:12:31,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:12:31,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:12:31,148 INFO L87 Difference]: Start difference. First operand 7614 states and 11135 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:12:33,213 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:12:37,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:12:40,832 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:12:50,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:13:03,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:13:07,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:13:07,633 INFO L93 Difference]: Finished difference Result 15161 states and 22197 transitions. [2021-11-02 21:13:07,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:13:07,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-02 21:13:07,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:13:07,661 INFO L225 Difference]: With dead ends: 15161 [2021-11-02 21:13:07,661 INFO L226 Difference]: Without dead ends: 15159 [2021-11-02 21:13:07,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:13:07,665 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2773 mSDsluCounter, 2784 mSDsCounter, 0 mSdLazyCounter, 5636 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31542.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2773 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.03ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5636 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35987.73ms IncrementalHoareTripleChecker+Time [2021-11-02 21:13:07,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2773 Valid, 0 Invalid, 5639 Unknown, 0 Unchecked, 29.03ms Time], IncrementalHoareTripleChecker [1 Valid, 5636 Invalid, 2 Unknown, 0 Unchecked, 35987.73ms Time] [2021-11-02 21:13:07,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15159 states. [2021-11-02 21:13:07,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15159 to 15113. [2021-11-02 21:13:07,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15113 states, 15108 states have (on average 1.4651840084723324) internal successors, (22136), 15112 states have internal predecessors, (22136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:13:07,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15113 states to 15113 states and 22136 transitions. [2021-11-02 21:13:07,919 INFO L78 Accepts]: Start accepts. Automaton has 15113 states and 22136 transitions. Word has length 79 [2021-11-02 21:13:07,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:13:07,919 INFO L470 AbstractCegarLoop]: Abstraction has 15113 states and 22136 transitions. [2021-11-02 21:13:07,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:13:07,919 INFO L276 IsEmpty]: Start isEmpty. Operand 15113 states and 22136 transitions. [2021-11-02 21:13:07,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 21:13:07,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:13:07,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:13:07,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 21:13:07,921 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:13:07,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:13:07,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1155119060, now seen corresponding path program 1 times [2021-11-02 21:13:07,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:13:07,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664662514] [2021-11-02 21:13:07,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:13:07,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:13:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:13:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 21:13:08,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:13:08,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664662514] [2021-11-02 21:13:08,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664662514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:13:08,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:13:08,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:13:08,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963173776] [2021-11-02 21:13:08,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:13:08,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:13:08,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:13:08,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:13:08,092 INFO L87 Difference]: Start difference. First operand 15113 states and 22136 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:13:10,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:13:15,615 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:13:21,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:13:32,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:13:35,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:13:47,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:13:50,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:13:51,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:13:51,598 INFO L93 Difference]: Finished difference Result 30090 states and 44113 transitions. [2021-11-02 21:13:51,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:13:51,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-02 21:13:51,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:13:51,654 INFO L225 Difference]: With dead ends: 30090 [2021-11-02 21:13:51,654 INFO L226 Difference]: Without dead ends: 30081 [2021-11-02 21:13:51,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.88ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:13:51,664 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2760 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 5637 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37561.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2760 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.72ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5637 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42905.85ms IncrementalHoareTripleChecker+Time [2021-11-02 21:13:51,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2760 Valid, 0 Invalid, 5643 Unknown, 0 Unchecked, 29.72ms Time], IncrementalHoareTripleChecker [2 Valid, 5637 Invalid, 4 Unknown, 0 Unchecked, 42905.85ms Time] [2021-11-02 21:13:51,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30081 states. [2021-11-02 21:13:52,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30081 to 30075. [2021-11-02 21:13:52,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30075 states, 30070 states have (on average 1.4662454273362155) internal successors, (44090), 30074 states have internal predecessors, (44090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:13:52,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30075 states to 30075 states and 44090 transitions. [2021-11-02 21:13:52,190 INFO L78 Accepts]: Start accepts. Automaton has 30075 states and 44090 transitions. Word has length 80 [2021-11-02 21:13:52,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:13:52,191 INFO L470 AbstractCegarLoop]: Abstraction has 30075 states and 44090 transitions. [2021-11-02 21:13:52,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:13:52,191 INFO L276 IsEmpty]: Start isEmpty. Operand 30075 states and 44090 transitions. [2021-11-02 21:13:52,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-02 21:13:52,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:13:52,195 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 21:13:52,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 21:13:52,196 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:13:52,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:13:52,196 INFO L85 PathProgramCache]: Analyzing trace with hash 2100863193, now seen corresponding path program 1 times [2021-11-02 21:13:52,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:13:52,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476731553] [2021-11-02 21:13:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:13:52,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:13:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:13:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 21:13:52,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:13:52,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476731553] [2021-11-02 21:13:52,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476731553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:13:52,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:13:52,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:13:52,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624040135] [2021-11-02 21:13:52,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:13:52,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:13:52,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:13:52,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:13:52,342 INFO L87 Difference]: Start difference. First operand 30075 states and 44090 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:13:54,405 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:13:59,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:14:03,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:14:20,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:14:22,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:14:22,033 INFO L93 Difference]: Finished difference Result 60679 states and 88984 transitions. [2021-11-02 21:14:22,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:14:22,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-02 21:14:22,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:14:22,088 INFO L225 Difference]: With dead ends: 60679 [2021-11-02 21:14:22,089 INFO L226 Difference]: Without dead ends: 30668 [2021-11-02 21:14:22,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:14:22,179 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 63 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 5714 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25968.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.77ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5714 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29204.46ms IncrementalHoareTripleChecker+Time [2021-11-02 21:14:22,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 0 Invalid, 5718 Unknown, 0 Unchecked, 19.77ms Time], IncrementalHoareTripleChecker [1 Valid, 5714 Invalid, 3 Unknown, 0 Unchecked, 29204.46ms Time] [2021-11-02 21:14:22,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30668 states. [2021-11-02 21:14:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30668 to 30635. [2021-11-02 21:14:22,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30635 states, 30630 states have (on average 1.4662748938948742) internal successors, (44912), 30634 states have internal predecessors, (44912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:14:22,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30635 states to 30635 states and 44912 transitions. [2021-11-02 21:14:22,676 INFO L78 Accepts]: Start accepts. Automaton has 30635 states and 44912 transitions. Word has length 102 [2021-11-02 21:14:22,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:14:22,676 INFO L470 AbstractCegarLoop]: Abstraction has 30635 states and 44912 transitions. [2021-11-02 21:14:22,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:14:22,676 INFO L276 IsEmpty]: Start isEmpty. Operand 30635 states and 44912 transitions. [2021-11-02 21:14:22,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-02 21:14:22,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:14:22,680 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 21:14:22,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 21:14:22,681 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:14:22,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:14:22,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1536852029, now seen corresponding path program 1 times [2021-11-02 21:14:22,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:14:22,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581818357] [2021-11-02 21:14:22,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:14:22,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:14:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:14:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 21:14:23,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:14:23,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581818357] [2021-11-02 21:14:23,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581818357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:14:23,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:14:23,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:14:23,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919466032] [2021-11-02 21:14:23,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:14:23,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:14:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:14:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:14:23,067 INFO L87 Difference]: Start difference. First operand 30635 states and 44912 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 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) [2021-11-02 21:14:25,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:14:34,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:14:43,244 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:14:47,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:14:53,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:14:58,336 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:14:59,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:14:59,108 INFO L93 Difference]: Finished difference Result 64973 states and 95765 transitions. [2021-11-02 21:14:59,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:14:59,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 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 113 [2021-11-02 21:14:59,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:14:59,171 INFO L225 Difference]: With dead ends: 64973 [2021-11-02 21:14:59,171 INFO L226 Difference]: Without dead ends: 34402 [2021-11-02 21:14:59,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:14:59,209 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1166 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 5141 mSolverCounterSat, 53 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31059.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.78ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 5141 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35381.04ms IncrementalHoareTripleChecker+Time [2021-11-02 21:14:59,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1166 Valid, 0 Invalid, 5197 Unknown, 0 Unchecked, 22.78ms Time], IncrementalHoareTripleChecker [53 Valid, 5141 Invalid, 3 Unknown, 0 Unchecked, 35381.04ms Time] [2021-11-02 21:14:59,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34402 states. [2021-11-02 21:14:59,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34402 to 34287. [2021-11-02 21:14:59,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34287 states, 34282 states have (on average 1.4628668105711453) internal successors, (50150), 34286 states have internal predecessors, (50150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:14:59,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34287 states to 34287 states and 50150 transitions. [2021-11-02 21:14:59,849 INFO L78 Accepts]: Start accepts. Automaton has 34287 states and 50150 transitions. Word has length 113 [2021-11-02 21:14:59,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:14:59,849 INFO L470 AbstractCegarLoop]: Abstraction has 34287 states and 50150 transitions. [2021-11-02 21:14:59,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 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) [2021-11-02 21:14:59,849 INFO L276 IsEmpty]: Start isEmpty. Operand 34287 states and 50150 transitions. [2021-11-02 21:14:59,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-02 21:14:59,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:14:59,859 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:14:59,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 21:14:59,861 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:14:59,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:14:59,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1008382304, now seen corresponding path program 1 times [2021-11-02 21:14:59,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:14:59,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886260096] [2021-11-02 21:14:59,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:14:59,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:14:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:15:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 21:15:00,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:15:00,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886260096] [2021-11-02 21:15:00,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886260096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:15:00,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:15:00,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 21:15:00,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805783518] [2021-11-02 21:15:00,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 21:15:00,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:15:00,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 21:15:00,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 21:15:00,065 INFO L87 Difference]: Start difference. First operand 34287 states and 50150 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:15:02,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:15:16,938 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:15:18,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:15:20,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:15:23,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:15:39,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:15:42,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:15:47,289 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:15:50,254 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:15:54,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:15:57,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:15:57,818 INFO L93 Difference]: Finished difference Result 83493 states and 122232 transitions. [2021-11-02 21:15:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 21:15:57,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 123 [2021-11-02 21:15:57,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:15:57,938 INFO L225 Difference]: With dead ends: 83493 [2021-11-02 21:15:57,938 INFO L226 Difference]: Without dead ends: 49270 [2021-11-02 21:15:58,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.76ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:15:58,017 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1659 mSDsluCounter, 6404 mSDsCounter, 0 mSdLazyCounter, 10460 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51203.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 73.65ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10460 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56741.32ms IncrementalHoareTripleChecker+Time [2021-11-02 21:15:58,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1659 Valid, 0 Invalid, 10467 Unknown, 0 Unchecked, 73.65ms Time], IncrementalHoareTripleChecker [5 Valid, 10460 Invalid, 2 Unknown, 0 Unchecked, 56741.32ms Time] [2021-11-02 21:15:58,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49270 states. [2021-11-02 21:15:58,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49270 to 34319. [2021-11-02 21:15:58,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34319 states, 34314 states have (on average 1.462435157661596) internal successors, (50182), 34318 states have internal predecessors, (50182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:15:58,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34319 states to 34319 states and 50182 transitions. [2021-11-02 21:15:58,897 INFO L78 Accepts]: Start accepts. Automaton has 34319 states and 50182 transitions. Word has length 123 [2021-11-02 21:15:58,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:15:58,897 INFO L470 AbstractCegarLoop]: Abstraction has 34319 states and 50182 transitions. [2021-11-02 21:15:58,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:15:58,898 INFO L276 IsEmpty]: Start isEmpty. Operand 34319 states and 50182 transitions. [2021-11-02 21:15:58,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-02 21:15:58,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:15:58,904 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:15:58,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 21:15:58,904 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:15:58,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:15:58,905 INFO L85 PathProgramCache]: Analyzing trace with hash -231212858, now seen corresponding path program 1 times [2021-11-02 21:15:58,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:15:58,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919300256] [2021-11-02 21:15:58,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:15:58,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:15:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:15:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 21:15:59,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:15:59,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919300256] [2021-11-02 21:15:59,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919300256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:15:59,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:15:59,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:15:59,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122934079] [2021-11-02 21:15:59,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:15:59,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:15:59,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:15:59,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:15:59,071 INFO L87 Difference]: Start difference. First operand 34319 states and 50182 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:16:01,138 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:16:12,726 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:16:15,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:16:21,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:16:37,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:16:37,739 INFO L93 Difference]: Finished difference Result 68590 states and 100325 transitions. [2021-11-02 21:16:37,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:16:37,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-02 21:16:37,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:16:37,796 INFO L225 Difference]: With dead ends: 68590 [2021-11-02 21:16:37,797 INFO L226 Difference]: Without dead ends: 34335 [2021-11-02 21:16:37,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:16:37,820 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2844 mSDsCounter, 0 mSdLazyCounter, 5699 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32658.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5699 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37948.76ms IncrementalHoareTripleChecker+Time [2021-11-02 21:16:37,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5702 Unknown, 0 Unchecked, 45.68ms Time], IncrementalHoareTripleChecker [0 Valid, 5699 Invalid, 3 Unknown, 0 Unchecked, 37948.76ms Time] [2021-11-02 21:16:37,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34335 states. [2021-11-02 21:16:38,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34335 to 34335. [2021-11-02 21:16:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34335 states, 34330 states have (on average 1.462219632974075) internal successors, (50198), 34334 states have internal predecessors, (50198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:16:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34335 states to 34335 states and 50198 transitions. [2021-11-02 21:16:38,468 INFO L78 Accepts]: Start accepts. Automaton has 34335 states and 50198 transitions. Word has length 144 [2021-11-02 21:16:38,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:16:38,468 INFO L470 AbstractCegarLoop]: Abstraction has 34335 states and 50198 transitions. [2021-11-02 21:16:38,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:16:38,469 INFO L276 IsEmpty]: Start isEmpty. Operand 34335 states and 50198 transitions. [2021-11-02 21:16:38,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-02 21:16:38,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:16:38,493 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:16:38,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 21:16:38,493 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:16:38,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:16:38,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1707949188, now seen corresponding path program 1 times [2021-11-02 21:16:38,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:16:38,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149836289] [2021-11-02 21:16:38,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:16:38,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:16:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:16:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 21:16:38,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:16:38,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149836289] [2021-11-02 21:16:38,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149836289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:16:38,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:16:38,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:16:38,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220624277] [2021-11-02 21:16:38,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:16:38,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:16:38,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:16:38,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:16:38,872 INFO L87 Difference]: Start difference. First operand 34335 states and 50198 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:16:40,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:16:55,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:16:57,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:17:00,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:17:06,918 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:17:11,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:17:11,117 INFO L93 Difference]: Finished difference Result 70015 states and 102800 transitions. [2021-11-02 21:17:11,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:17:11,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-02 21:17:11,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:17:11,171 INFO L225 Difference]: With dead ends: 70015 [2021-11-02 21:17:11,171 INFO L226 Difference]: Without dead ends: 35744 [2021-11-02 21:17:11,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:17:11,203 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 480 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 5431 mSolverCounterSat, 52 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27421.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.08ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 5431 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31595.96ms IncrementalHoareTripleChecker+Time [2021-11-02 21:17:11,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 0 Invalid, 5485 Unknown, 0 Unchecked, 27.08ms Time], IncrementalHoareTripleChecker [52 Valid, 5431 Invalid, 2 Unknown, 0 Unchecked, 31595.96ms Time] [2021-11-02 21:17:11,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35744 states. [2021-11-02 21:17:11,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35744 to 35711. [2021-11-02 21:17:11,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35711 states, 35706 states have (on average 1.4571220523161375) internal successors, (52028), 35710 states have internal predecessors, (52028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:17:11,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35711 states to 35711 states and 52028 transitions. [2021-11-02 21:17:11,908 INFO L78 Accepts]: Start accepts. Automaton has 35711 states and 52028 transitions. Word has length 144 [2021-11-02 21:17:11,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:17:11,908 INFO L470 AbstractCegarLoop]: Abstraction has 35711 states and 52028 transitions. [2021-11-02 21:17:11,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:17:11,908 INFO L276 IsEmpty]: Start isEmpty. Operand 35711 states and 52028 transitions. [2021-11-02 21:17:11,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-02 21:17:11,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:17:11,915 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:17:11,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 21:17:11,916 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:17:11,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:17:11,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1959700795, now seen corresponding path program 1 times [2021-11-02 21:17:11,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:17:11,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154112021] [2021-11-02 21:17:11,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:17:11,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:17:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:17:12,126 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 21:17:12,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:17:12,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154112021] [2021-11-02 21:17:12,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154112021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:17:12,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:17:12,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 21:17:12,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591728102] [2021-11-02 21:17:12,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 21:17:12,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:17:12,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 21:17:12,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 21:17:12,128 INFO L87 Difference]: Start difference. First operand 35711 states and 52028 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:17:14,215 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:17:22,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:17:25,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:17:29,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:17:38,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:17:41,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:17:44,956 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:17:59,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:18:02,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:18:06,638 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:18:09,723 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:18:15,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:18:19,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:18:29,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:18:45,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:18:45,978 INFO L93 Difference]: Finished difference Result 136883 states and 198409 transitions. [2021-11-02 21:18:45,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 21:18:45,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-02 21:18:45,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:18:46,261 INFO L225 Difference]: With dead ends: 136883 [2021-11-02 21:18:46,262 INFO L226 Difference]: Without dead ends: 101236 [2021-11-02 21:18:46,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.82ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:18:46,338 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8343 mSDsluCounter, 9860 mSDsCounter, 0 mSdLazyCounter, 14868 mSolverCounterSat, 24 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80713.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8343 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 119.69ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 14868 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91835.74ms IncrementalHoareTripleChecker+Time [2021-11-02 21:18:46,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8343 Valid, 0 Invalid, 14898 Unknown, 0 Unchecked, 119.69ms Time], IncrementalHoareTripleChecker [24 Valid, 14868 Invalid, 6 Unknown, 0 Unchecked, 91835.74ms Time] [2021-11-02 21:18:46,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101236 states. [2021-11-02 21:18:47,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101236 to 35743. [2021-11-02 21:18:47,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35743 states, 35738 states have (on average 1.4567127427388213) internal successors, (52060), 35742 states have internal predecessors, (52060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:18:47,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35743 states to 35743 states and 52060 transitions. [2021-11-02 21:18:47,637 INFO L78 Accepts]: Start accepts. Automaton has 35743 states and 52060 transitions. Word has length 156 [2021-11-02 21:18:47,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:18:47,638 INFO L470 AbstractCegarLoop]: Abstraction has 35743 states and 52060 transitions. [2021-11-02 21:18:47,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:18:47,638 INFO L276 IsEmpty]: Start isEmpty. Operand 35743 states and 52060 transitions. [2021-11-02 21:18:47,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-02 21:18:47,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:18:47,644 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:18:47,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 21:18:47,644 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:18:47,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:18:47,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1735207605, now seen corresponding path program 1 times [2021-11-02 21:18:47,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:18:47,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178016497] [2021-11-02 21:18:47,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:18:47,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:18:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:18:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-02 21:18:47,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:18:47,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178016497] [2021-11-02 21:18:47,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178016497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:18:47,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:18:47,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:18:47,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098209642] [2021-11-02 21:18:47,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:18:47,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:18:47,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:18:47,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:18:47,851 INFO L87 Difference]: Start difference. First operand 35743 states and 52060 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:18:49,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:19:12,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:19:15,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:19:17,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:19:24,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:19:30,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:19:30,175 INFO L93 Difference]: Finished difference Result 72815 states and 106492 transitions. [2021-11-02 21:19:30,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:19:30,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 161 [2021-11-02 21:19:30,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:19:30,249 INFO L225 Difference]: With dead ends: 72815 [2021-11-02 21:19:30,249 INFO L226 Difference]: Without dead ends: 37136 [2021-11-02 21:19:30,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:19:30,278 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 479 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 5448 mSolverCounterSat, 50 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35111.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.88ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 5448 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41335.37ms IncrementalHoareTripleChecker+Time [2021-11-02 21:19:30,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 0 Invalid, 5501 Unknown, 0 Unchecked, 30.88ms Time], IncrementalHoareTripleChecker [50 Valid, 5448 Invalid, 3 Unknown, 0 Unchecked, 41335.37ms Time] [2021-11-02 21:19:30,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37136 states. [2021-11-02 21:19:31,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37136 to 37103. [2021-11-02 21:19:31,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37103 states, 37098 states have (on average 1.4522076661814654) internal successors, (53874), 37102 states have internal predecessors, (53874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:19:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37103 states to 37103 states and 53874 transitions. [2021-11-02 21:19:31,103 INFO L78 Accepts]: Start accepts. Automaton has 37103 states and 53874 transitions. Word has length 161 [2021-11-02 21:19:31,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:19:31,104 INFO L470 AbstractCegarLoop]: Abstraction has 37103 states and 53874 transitions. [2021-11-02 21:19:31,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:19:31,104 INFO L276 IsEmpty]: Start isEmpty. Operand 37103 states and 53874 transitions. [2021-11-02 21:19:31,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-02 21:19:31,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:19:31,111 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:19:31,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 21:19:31,112 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:19:31,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:19:31,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1934652844, now seen corresponding path program 1 times [2021-11-02 21:19:31,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:19:31,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515086573] [2021-11-02 21:19:31,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:19:31,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:19:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:19:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 21:19:31,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:19:31,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515086573] [2021-11-02 21:19:31,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515086573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:19:31,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:19:31,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 21:19:31,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979561302] [2021-11-02 21:19:31,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 21:19:31,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:19:31,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 21:19:31,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 21:19:31,380 INFO L87 Difference]: Start difference. First operand 37103 states and 53874 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:19:33,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:19:43,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:19:46,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:19:50,588 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:19:59,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:20:15,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:20:23,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:20:34,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:20:42,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:20:54,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:20:59,664 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:21:03,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:21:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:21:14,846 INFO L93 Difference]: Finished difference Result 159433 states and 230051 transitions. [2021-11-02 21:21:14,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 21:21:14,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 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 175 [2021-11-02 21:21:14,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:21:15,173 INFO L225 Difference]: With dead ends: 159433 [2021-11-02 21:21:15,174 INFO L226 Difference]: Without dead ends: 122394 [2021-11-02 21:21:15,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.03ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:21:15,263 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8656 mSDsluCounter, 10068 mSDsCounter, 0 mSdLazyCounter, 15165 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84626.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8656 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 121.55ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15165 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100859.56ms IncrementalHoareTripleChecker+Time [2021-11-02 21:21:15,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8656 Valid, 0 Invalid, 15174 Unknown, 0 Unchecked, 121.55ms Time], IncrementalHoareTripleChecker [4 Valid, 15165 Invalid, 5 Unknown, 0 Unchecked, 100859.56ms Time] [2021-11-02 21:21:15,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122394 states. [2021-11-02 21:21:16,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122394 to 37135. [2021-11-02 21:21:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37135 states, 37130 states have (on average 1.4518179369781847) internal successors, (53906), 37134 states have internal predecessors, (53906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:21:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37135 states to 37135 states and 53906 transitions. [2021-11-02 21:21:16,747 INFO L78 Accepts]: Start accepts. Automaton has 37135 states and 53906 transitions. Word has length 175 [2021-11-02 21:21:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:21:16,748 INFO L470 AbstractCegarLoop]: Abstraction has 37135 states and 53906 transitions. [2021-11-02 21:21:16,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:21:16,748 INFO L276 IsEmpty]: Start isEmpty. Operand 37135 states and 53906 transitions. [2021-11-02 21:21:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-02 21:21:16,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:21:16,755 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:21:16,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 21:21:16,755 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:21:16,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:21:16,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1083215266, now seen corresponding path program 1 times [2021-11-02 21:21:16,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:21:16,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906895227] [2021-11-02 21:21:16,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:21:16,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:21:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:21:16,985 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 21:21:16,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:21:16,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906895227] [2021-11-02 21:21:16,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906895227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:21:16,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:21:16,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:21:16,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340297067] [2021-11-02 21:21:16,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:21:16,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:21:16,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:21:16,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:21:16,987 INFO L87 Difference]: Start difference. First operand 37135 states and 53906 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:21:19,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:21:25,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:21:30,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:21:44,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:22:03,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:22:08,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:22:14,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:22:14,670 INFO L93 Difference]: Finished difference Result 111173 states and 161440 transitions. [2021-11-02 21:22:14,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:22:14,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-02 21:22:14,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:22:14,802 INFO L225 Difference]: With dead ends: 111173 [2021-11-02 21:22:14,803 INFO L226 Difference]: Without dead ends: 74102 [2021-11-02 21:22:14,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:22:14,841 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2780 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 7991 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46011.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.18ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7991 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55855.67ms IncrementalHoareTripleChecker+Time [2021-11-02 21:22:14,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2780 Valid, 0 Invalid, 7996 Unknown, 0 Unchecked, 41.18ms Time], IncrementalHoareTripleChecker [1 Valid, 7991 Invalid, 4 Unknown, 0 Unchecked, 55855.67ms Time] [2021-11-02 21:22:14,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74102 states. [2021-11-02 21:22:15,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74102 to 37695. [2021-11-02 21:22:15,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37695 states, 37690 states have (on average 1.4501989917750067) internal successors, (54658), 37694 states have internal predecessors, (54658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:22:16,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37695 states to 37695 states and 54658 transitions. [2021-11-02 21:22:16,050 INFO L78 Accepts]: Start accepts. Automaton has 37695 states and 54658 transitions. Word has length 176 [2021-11-02 21:22:16,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:22:16,051 INFO L470 AbstractCegarLoop]: Abstraction has 37695 states and 54658 transitions. [2021-11-02 21:22:16,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:22:16,051 INFO L276 IsEmpty]: Start isEmpty. Operand 37695 states and 54658 transitions. [2021-11-02 21:22:16,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-02 21:22:16,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:22:16,058 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:22:16,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 21:22:16,059 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:22:16,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:22:16,059 INFO L85 PathProgramCache]: Analyzing trace with hash 367035318, now seen corresponding path program 1 times [2021-11-02 21:22:16,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:22:16,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132737985] [2021-11-02 21:22:16,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:22:16,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:22:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:22:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-02 21:22:16,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:22:16,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132737985] [2021-11-02 21:22:16,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132737985] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 21:22:16,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890826844] [2021-11-02 21:22:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:22:16,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 21:22:16,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 21:22:16,373 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 21:22:16,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 21:22:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:22:17,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 3354 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 21:22:17,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 21:22:18,447 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-02 21:22:18,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 21:22:18,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890826844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:22:18,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 21:22:18,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-02 21:22:18,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753746974] [2021-11-02 21:22:18,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:22:18,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:22:18,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:22:18,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:22:18,449 INFO L87 Difference]: Start difference. First operand 37695 states and 54658 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:22:20,510 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:22:26,386 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:22:34,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:22:37,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:22:44,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:22:50,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:22:53,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:23:07,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:23:07,818 INFO L93 Difference]: Finished difference Result 75323 states and 109243 transitions. [2021-11-02 21:23:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:23:07,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-02 21:23:07,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:23:07,951 INFO L225 Difference]: With dead ends: 75323 [2021-11-02 21:23:07,951 INFO L226 Difference]: Without dead ends: 75317 [2021-11-02 21:23:07,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.99ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:23:07,974 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2709 mSDsluCounter, 2783 mSDsCounter, 0 mSdLazyCounter, 5633 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38625.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2709 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.52ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5633 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47645.56ms IncrementalHoareTripleChecker+Time [2021-11-02 21:23:07,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2709 Valid, 0 Invalid, 5638 Unknown, 0 Unchecked, 34.52ms Time], IncrementalHoareTripleChecker [1 Valid, 5633 Invalid, 4 Unknown, 0 Unchecked, 47645.56ms Time] [2021-11-02 21:23:08,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75317 states. [2021-11-02 21:23:09,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75317 to 75131. [2021-11-02 21:23:09,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75131 states, 75126 states have (on average 1.450523121156457) internal successors, (108972), 75130 states have internal predecessors, (108972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:23:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75131 states to 75131 states and 108972 transitions. [2021-11-02 21:23:09,917 INFO L78 Accepts]: Start accepts. Automaton has 75131 states and 108972 transitions. Word has length 176 [2021-11-02 21:23:09,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:23:09,917 INFO L470 AbstractCegarLoop]: Abstraction has 75131 states and 108972 transitions. [2021-11-02 21:23:09,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:23:09,917 INFO L276 IsEmpty]: Start isEmpty. Operand 75131 states and 108972 transitions. [2021-11-02 21:23:09,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-02 21:23:09,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:23:09,924 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:23:09,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 21:23:10,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-02 21:23:10,125 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 21:23:10,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:23:10,125 INFO L85 PathProgramCache]: Analyzing trace with hash -222313890, now seen corresponding path program 1 times [2021-11-02 21:23:10,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:23:10,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341720525] [2021-11-02 21:23:10,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:23:10,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:23:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:23:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 21:23:10,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:23:10,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341720525] [2021-11-02 21:23:10,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341720525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:23:10,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:23:10,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 21:23:10,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384654381] [2021-11-02 21:23:10,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 21:23:10,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:23:10,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 21:23:10,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 21:23:10,605 INFO L87 Difference]: Start difference. First operand 75131 states and 108972 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:23:12,673 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15