./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--media--usb--dvb-usb-v2--dvb-usb-lmedm04.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--media--usb--dvb-usb-v2--dvb-usb-lmedm04.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 9baad8c3f39120ab2251378cc0d6fe7b52fdd04109a6ac87357d1c2188f7d5d6 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 21:12:31,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 21:12:31,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 21:12:32,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 21:12:32,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 21:12:32,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 21:12:32,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 21:12:32,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 21:12:32,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 21:12:32,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 21:12:32,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 21:12:32,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 21:12:32,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 21:12:32,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 21:12:32,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 21:12:32,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 21:12:32,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 21:12:32,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 21:12:32,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 21:12:32,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 21:12:32,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 21:12:32,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 21:12:32,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 21:12:32,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 21:12:32,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 21:12:32,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 21:12:32,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 21:12:32,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 21:12:32,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 21:12:32,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 21:12:32,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 21:12:32,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 21:12:32,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 21:12:32,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 21:12:32,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 21:12:32,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 21:12:32,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 21:12:32,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 21:12:32,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 21:12:32,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 21:12:32,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 21:12:32,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 21:12:32,117 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 21:12:32,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 21:12:32,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 21:12:32,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 21:12:32,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 21:12:32,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 21:12:32,118 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 21:12:32,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 21:12:32,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 21:12:32,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 21:12:32,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 21:12:32,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 21:12:32,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 21:12:32,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 21:12:32,119 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 21:12:32,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 21:12:32,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 21:12:32,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 21:12:32,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 21:12:32,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 21:12:32,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 21:12:32,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 21:12:32,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 21:12:32,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 21:12:32,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 21:12:32,120 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 21:12:32,120 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 21:12:32,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 21:12:32,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 21:12:32,120 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9baad8c3f39120ab2251378cc0d6fe7b52fdd04109a6ac87357d1c2188f7d5d6 [2021-11-02 21:12:32,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 21:12:32,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 21:12:32,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 21:12:32,337 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 21:12:32,339 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 21:12:32,340 INFO L432 ainManager$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--media--usb--dvb-usb-v2--dvb-usb-lmedm04.ko-entry_point.cil.out.i [2021-11-02 21:12:32,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9781aeacb/cc8a39474a324ecaa180a4cd3d81c4a3/FLAGcbe2fa3d2 [2021-11-02 21:12:33,055 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 21:12:33,057 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--media--usb--dvb-usb-v2--dvb-usb-lmedm04.ko-entry_point.cil.out.i [2021-11-02 21:12:33,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9781aeacb/cc8a39474a324ecaa180a4cd3d81c4a3/FLAGcbe2fa3d2 [2021-11-02 21:12:33,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9781aeacb/cc8a39474a324ecaa180a4cd3d81c4a3 [2021-11-02 21:12:33,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 21:12:33,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 21:12:33,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 21:12:33,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 21:12:33,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 21:12:33,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:33" (1/1) ... [2021-11-02 21:12:33,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d4eeae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:33, skipping insertion in model container [2021-11-02 21:12:33,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:33" (1/1) ... [2021-11-02 21:12:33,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 21:12:33,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 21:12:34,653 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--media--usb--dvb-usb-v2--dvb-usb-lmedm04.ko-entry_point.cil.out.i[299448,299461] [2021-11-02 21:12:34,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 21:12:34,808 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 21:12:35,044 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--media--usb--dvb-usb-v2--dvb-usb-lmedm04.ko-entry_point.cil.out.i[299448,299461] [2021-11-02 21:12:35,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 21:12:35,180 INFO L208 MainTranslator]: Completed translation [2021-11-02 21:12:35,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:35 WrapperNode [2021-11-02 21:12:35,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 21:12:35,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 21:12:35,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 21:12:35,183 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 21:12:35,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:35" (1/1) ... [2021-11-02 21:12:35,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:35" (1/1) ... [2021-11-02 21:12:35,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 21:12:35,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 21:12:35,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 21:12:35,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 21:12:35,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:35" (1/1) ... [2021-11-02 21:12:35,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:35" (1/1) ... [2021-11-02 21:12:35,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:35" (1/1) ... [2021-11-02 21:12:35,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:35" (1/1) ... [2021-11-02 21:12:35,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:35" (1/1) ... [2021-11-02 21:12:35,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:35" (1/1) ... [2021-11-02 21:12:35,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:35" (1/1) ... [2021-11-02 21:12:35,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 21:12:35,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 21:12:35,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 21:12:35,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 21:12:35,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:35" (1/1) ... [2021-11-02 21:12:35,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 21:12:35,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 21:12:35,782 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 21:12:35,791 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 21:12:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 21:12:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 21:12:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 21:12:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 21:12:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 21:12:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 21:12:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 21:12:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 21:12:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 21:12:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 21:12:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 21:12:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 21:12:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 21:12:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 21:12:35,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 21:12:41,254 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 21:12:41,254 INFO L299 CfgBuilder]: Removed 1455 assume(true) statements. [2021-11-02 21:12:41,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:41 BoogieIcfgContainer [2021-11-02 21:12:41,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 21:12:41,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 21:12:41,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 21:12:41,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 21:12:41,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:12:33" (1/3) ... [2021-11-02 21:12:41,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b6cb653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:41, skipping insertion in model container [2021-11-02 21:12:41,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:35" (2/3) ... [2021-11-02 21:12:41,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b6cb653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:41, skipping insertion in model container [2021-11-02 21:12:41,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:41" (3/3) ... [2021-11-02 21:12:41,264 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb-v2--dvb-usb-lmedm04.ko-entry_point.cil.out.i [2021-11-02 21:12:41,269 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 21:12:41,270 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2021-11-02 21:12:41,313 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 21:12:41,318 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 21:12:41,318 INFO L340 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2021-11-02 21:12:41,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 1719 states, 1659 states have (on average 1.45750452079566) internal successors, (2418), 1718 states have internal predecessors, (2418), 0 states have call successors, (0), 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 21:12:41,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 21:12:41,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:12:41,355 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] [2021-11-02 21:12:41,356 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:12:41,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:12:41,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2027503087, now seen corresponding path program 1 times [2021-11-02 21:12:41,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:12:41,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199201667] [2021-11-02 21:12:41,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:12:41,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:12:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:12:41,841 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 21:12:41,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:12:41,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199201667] [2021-11-02 21:12:41,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199201667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:12:41,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:12:41,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:12:41,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160793788] [2021-11-02 21:12:41,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 21:12:41,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:12:41,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 21:12:41,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 21:12:41,868 INFO L87 Difference]: Start difference. First operand has 1719 states, 1659 states have (on average 1.45750452079566) internal successors, (2418), 1718 states have internal predecessors, (2418), 0 states have call successors, (0), 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 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 21:12:43,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:12:48,339 WARN L515 Checker$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 21:12:54,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:12:54,640 INFO L93 Difference]: Finished difference Result 3434 states and 4831 transitions. [2021-11-02 21:12:54,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 21:12:54,642 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-02 21:12:54,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:12:54,657 INFO L225 Difference]: With dead ends: 3434 [2021-11-02 21:12:54,657 INFO L226 Difference]: Without dead ends: 1709 [2021-11-02 21:12:54,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 21:12:54,668 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2302 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11568.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.05ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2302 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12511.07ms IncrementalHoareTripleChecker+Time [2021-11-02 21:12:54,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 2304 Unknown, 0 Unchecked, 16.05ms Time], IncrementalHoareTripleChecker [0 Valid, 2302 Invalid, 2 Unknown, 0 Unchecked, 12511.07ms Time] [2021-11-02 21:12:54,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2021-11-02 21:12:54,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1709. [2021-11-02 21:12:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1650 states have (on average 1.3903030303030304) internal successors, (2294), 1708 states have internal predecessors, (2294), 0 states have call successors, (0), 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 21:12:54,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2294 transitions. [2021-11-02 21:12:54,761 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2294 transitions. Word has length 59 [2021-11-02 21:12:54,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:12:54,762 INFO L470 AbstractCegarLoop]: Abstraction has 1709 states and 2294 transitions. [2021-11-02 21:12:54,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 21:12:54,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2294 transitions. [2021-11-02 21:12:54,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 21:12:54,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:12:54,764 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] [2021-11-02 21:12:54,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 21:12:54,764 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:12:54,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:12:54,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2129732419, now seen corresponding path program 1 times [2021-11-02 21:12:54,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:12:54,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642312519] [2021-11-02 21:12:54,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:12:54,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:12:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:12:55,078 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 21:12:55,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:12:55,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642312519] [2021-11-02 21:12:55,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642312519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:12:55,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:12:55,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:12:55,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472705248] [2021-11-02 21:12:55,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:12:55,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:12:55,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:12:55,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:12:55,085 INFO L87 Difference]: Start difference. First operand 1709 states and 2294 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 21:12:57,178 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:13:03,366 WARN L515 Checker$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 21:13:14,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:13:14,897 INFO L93 Difference]: Finished difference Result 3387 states and 4561 transitions. [2021-11-02 21:13:14,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:13:14,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-02 21:13:14,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:13:14,903 INFO L225 Difference]: With dead ends: 3387 [2021-11-02 21:13:14,904 INFO L226 Difference]: Without dead ends: 1714 [2021-11-02 21:13:14,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:13:14,907 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2277 mSDsCounter, 0 mSdLazyCounter, 4579 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18317.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.12ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 4579 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19543.86ms IncrementalHoareTripleChecker+Time [2021-11-02 21:13:14,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 4589 Unknown, 0 Unchecked, 35.12ms Time], IncrementalHoareTripleChecker [8 Valid, 4579 Invalid, 2 Unknown, 0 Unchecked, 19543.86ms Time] [2021-11-02 21:13:14,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2021-11-02 21:13:14,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1714. [2021-11-02 21:13:14,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1655 states have (on average 1.3891238670694863) internal successors, (2299), 1713 states have internal predecessors, (2299), 0 states have call successors, (0), 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 21:13:14,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2299 transitions. [2021-11-02 21:13:14,938 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2299 transitions. Word has length 59 [2021-11-02 21:13:14,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:13:14,938 INFO L470 AbstractCegarLoop]: Abstraction has 1714 states and 2299 transitions. [2021-11-02 21:13:14,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 21:13:14,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2299 transitions. [2021-11-02 21:13:14,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 21:13:14,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:13:14,940 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] [2021-11-02 21:13:14,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 21:13:14,940 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:13:14,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:13:14,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1213674309, now seen corresponding path program 1 times [2021-11-02 21:13:14,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:13:14,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329636768] [2021-11-02 21:13:14,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:13:14,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:13:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:13:15,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 21:13:15,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:13:15,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329636768] [2021-11-02 21:13:15,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329636768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:13:15,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:13:15,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:13:15,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308080660] [2021-11-02 21:13:15,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:13:15,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:13:15,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:13:15,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:13:15,157 INFO L87 Difference]: Start difference. First operand 1714 states and 2299 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 21:13:17,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:13:21,291 WARN L515 Checker$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 21:13:35,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:13:35,870 INFO L93 Difference]: Finished difference Result 4915 states and 6621 transitions. [2021-11-02 21:13:35,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:13:35,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-02 21:13:35,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:13:35,881 INFO L225 Difference]: With dead ends: 4915 [2021-11-02 21:13:35,881 INFO L226 Difference]: Without dead ends: 3256 [2021-11-02 21:13:35,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:13:35,885 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2078 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 4582 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18944.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.70ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4582 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20338.05ms IncrementalHoareTripleChecker+Time [2021-11-02 21:13:35,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2078 Valid, 0 Invalid, 4585 Unknown, 0 Unchecked, 36.70ms Time], IncrementalHoareTripleChecker [1 Valid, 4582 Invalid, 2 Unknown, 0 Unchecked, 20338.05ms Time] [2021-11-02 21:13:35,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2021-11-02 21:13:35,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 3128. [2021-11-02 21:13:36,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 3069 states have (on average 1.4020853698273053) internal successors, (4303), 3127 states have internal predecessors, (4303), 0 states have call successors, (0), 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 21:13:36,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 4303 transitions. [2021-11-02 21:13:36,010 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 4303 transitions. Word has length 64 [2021-11-02 21:13:36,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:13:36,012 INFO L470 AbstractCegarLoop]: Abstraction has 3128 states and 4303 transitions. [2021-11-02 21:13:36,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 21:13:36,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 4303 transitions. [2021-11-02 21:13:36,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 21:13:36,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:13:36,017 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 21:13:36,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 21:13:36,017 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:13:36,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:13:36,019 INFO L85 PathProgramCache]: Analyzing trace with hash 681914330, now seen corresponding path program 1 times [2021-11-02 21:13:36,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:13:36,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390130681] [2021-11-02 21:13:36,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:13:36,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:13:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:13:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 21:13:36,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:13:36,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390130681] [2021-11-02 21:13:36,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390130681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:13:36,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:13:36,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:13:36,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987044989] [2021-11-02 21:13:36,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:13:36,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:13:36,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:13:36,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:13:36,251 INFO L87 Difference]: Start difference. First operand 3128 states and 4303 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 21:13:38,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:13:42,409 WARN L515 Checker$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 21:13:59,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:13:59,294 INFO L93 Difference]: Finished difference Result 9218 states and 12731 transitions. [2021-11-02 21:13:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:13:59,295 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 21:13:59,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:13:59,317 INFO L225 Difference]: With dead ends: 9218 [2021-11-02 21:13:59,317 INFO L226 Difference]: Without dead ends: 6145 [2021-11-02 21:13:59,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:13:59,325 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2191 mSDsluCounter, 2273 mSDsCounter, 0 mSdLazyCounter, 4723 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20933.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2191 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.34ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4723 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22586.33ms IncrementalHoareTripleChecker+Time [2021-11-02 21:13:59,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2191 Valid, 0 Invalid, 4728 Unknown, 0 Unchecked, 26.34ms Time], IncrementalHoareTripleChecker [3 Valid, 4723 Invalid, 2 Unknown, 0 Unchecked, 22586.33ms Time] [2021-11-02 21:13:59,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6145 states. [2021-11-02 21:13:59,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6145 to 6037. [2021-11-02 21:13:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6037 states, 5978 states have (on average 1.4098360655737705) internal successors, (8428), 6036 states have internal predecessors, (8428), 0 states have call successors, (0), 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 21:13:59,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6037 states to 6037 states and 8428 transitions. [2021-11-02 21:13:59,453 INFO L78 Accepts]: Start accepts. Automaton has 6037 states and 8428 transitions. Word has length 66 [2021-11-02 21:13:59,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:13:59,455 INFO L470 AbstractCegarLoop]: Abstraction has 6037 states and 8428 transitions. [2021-11-02 21:13:59,455 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 21:13:59,455 INFO L276 IsEmpty]: Start isEmpty. Operand 6037 states and 8428 transitions. [2021-11-02 21:13:59,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 21:13:59,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:13:59,458 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] [2021-11-02 21:13:59,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 21:13:59,459 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:13:59,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:13:59,459 INFO L85 PathProgramCache]: Analyzing trace with hash 344809488, now seen corresponding path program 1 times [2021-11-02 21:13:59,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:13:59,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896740506] [2021-11-02 21:13:59,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:13:59,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:13:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:13:59,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 21:13:59,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:13:59,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896740506] [2021-11-02 21:13:59,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896740506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:13:59,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:13:59,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:13:59,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741688248] [2021-11-02 21:13:59,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:13:59,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:13:59,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:13:59,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:13:59,690 INFO L87 Difference]: Start difference. First operand 6037 states and 8428 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 21:14:01,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:14:11,298 WARN L515 Checker$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 21:14:23,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:14:23,226 INFO L93 Difference]: Finished difference Result 14416 states and 20174 transitions. [2021-11-02 21:14:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:14:23,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-02 21:14:23,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:14:23,329 INFO L225 Difference]: With dead ends: 14416 [2021-11-02 21:14:23,329 INFO L226 Difference]: Without dead ends: 8434 [2021-11-02 21:14:23,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:14:23,340 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 951 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 4737 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21579.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.93ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4737 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23175.18ms IncrementalHoareTripleChecker+Time [2021-11-02 21:14:23,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [951 Valid, 0 Invalid, 4740 Unknown, 0 Unchecked, 23.93ms Time], IncrementalHoareTripleChecker [1 Valid, 4737 Invalid, 2 Unknown, 0 Unchecked, 23175.18ms Time] [2021-11-02 21:14:23,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8434 states. [2021-11-02 21:14:23,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8434 to 8357. [2021-11-02 21:14:23,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8357 states, 8298 states have (on average 1.4167269221499157) internal successors, (11756), 8356 states have internal predecessors, (11756), 0 states have call successors, (0), 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 21:14:23,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8357 states to 8357 states and 11756 transitions. [2021-11-02 21:14:23,493 INFO L78 Accepts]: Start accepts. Automaton has 8357 states and 11756 transitions. Word has length 67 [2021-11-02 21:14:23,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:14:23,494 INFO L470 AbstractCegarLoop]: Abstraction has 8357 states and 11756 transitions. [2021-11-02 21:14:23,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 21:14:23,495 INFO L276 IsEmpty]: Start isEmpty. Operand 8357 states and 11756 transitions. [2021-11-02 21:14:23,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 21:14:23,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:14:23,499 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] [2021-11-02 21:14:23,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 21:14:23,500 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:14:23,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:14:23,501 INFO L85 PathProgramCache]: Analyzing trace with hash -5546913, now seen corresponding path program 1 times [2021-11-02 21:14:23,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:14:23,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146424847] [2021-11-02 21:14:23,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:14:23,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:14:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:14:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 21:14:23,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:14:23,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146424847] [2021-11-02 21:14:23,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146424847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:14:23,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:14:23,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:14:23,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077069003] [2021-11-02 21:14:23,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:14:23,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:14:23,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:14:23,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:14:23,690 INFO L87 Difference]: Start difference. First operand 8357 states and 11756 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 21:14:25,745 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:14:32,493 WARN L515 Checker$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 21:14:48,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:14:48,019 INFO L93 Difference]: Finished difference Result 20927 states and 29434 transitions. [2021-11-02 21:14:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:14:48,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-02 21:14:48,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:14:48,053 INFO L225 Difference]: With dead ends: 20927 [2021-11-02 21:14:48,053 INFO L226 Difference]: Without dead ends: 12625 [2021-11-02 21:14:48,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.18ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:14:48,065 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1489 mSDsluCounter, 2285 mSDsCounter, 0 mSdLazyCounter, 5997 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22323.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.16ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5997 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23941.61ms IncrementalHoareTripleChecker+Time [2021-11-02 21:14:48,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 0 Invalid, 6000 Unknown, 0 Unchecked, 24.16ms Time], IncrementalHoareTripleChecker [1 Valid, 5997 Invalid, 2 Unknown, 0 Unchecked, 23941.61ms Time] [2021-11-02 21:14:48,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12625 states. [2021-11-02 21:14:48,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12625 to 12537. [2021-11-02 21:14:48,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12537 states, 12478 states have (on average 1.416252604584068) internal successors, (17672), 12536 states have internal predecessors, (17672), 0 states have call successors, (0), 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 21:14:48,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12537 states to 12537 states and 17672 transitions. [2021-11-02 21:14:48,306 INFO L78 Accepts]: Start accepts. Automaton has 12537 states and 17672 transitions. Word has length 70 [2021-11-02 21:14:48,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:14:48,307 INFO L470 AbstractCegarLoop]: Abstraction has 12537 states and 17672 transitions. [2021-11-02 21:14:48,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 21:14:48,308 INFO L276 IsEmpty]: Start isEmpty. Operand 12537 states and 17672 transitions. [2021-11-02 21:14:48,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 21:14:48,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:14:48,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:14:48,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 21:14:48,309 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:14:48,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:14:48,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1947063907, now seen corresponding path program 1 times [2021-11-02 21:14:48,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:14:48,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477869005] [2021-11-02 21:14:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:14:48,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:14:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:14:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 21:14:48,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:14:48,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477869005] [2021-11-02 21:14:48,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477869005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:14:48,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:14:48,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:14:48,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328351280] [2021-11-02 21:14:48,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:14:48,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:14:48,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:14:48,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:14:48,550 INFO L87 Difference]: Start difference. First operand 12537 states and 17672 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:14:50,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:14:55,164 WARN L515 Checker$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 21:15:09,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:15:09,839 INFO L93 Difference]: Finished difference Result 19476 states and 27518 transitions. [2021-11-02 21:15:09,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:15:09,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-02 21:15:09,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:15:09,884 INFO L225 Difference]: With dead ends: 19476 [2021-11-02 21:15:09,884 INFO L226 Difference]: Without dead ends: 19458 [2021-11-02 21:15:09,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:15:09,893 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1241 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 4457 mSolverCounterSat, 31 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19411.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.25ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4457 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20927.03ms IncrementalHoareTripleChecker+Time [2021-11-02 21:15:09,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1241 Valid, 0 Invalid, 4490 Unknown, 0 Unchecked, 19.25ms Time], IncrementalHoareTripleChecker [31 Valid, 4457 Invalid, 2 Unknown, 0 Unchecked, 20927.03ms Time] [2021-11-02 21:15:09,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19458 states. [2021-11-02 21:15:10,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19458 to 19430. [2021-11-02 21:15:10,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19430 states, 19371 states have (on average 1.4160342780444994) internal successors, (27430), 19429 states have internal predecessors, (27430), 0 states have call successors, (0), 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 21:15:10,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19430 states to 19430 states and 27430 transitions. [2021-11-02 21:15:10,218 INFO L78 Accepts]: Start accepts. Automaton has 19430 states and 27430 transitions. Word has length 75 [2021-11-02 21:15:10,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:15:10,218 INFO L470 AbstractCegarLoop]: Abstraction has 19430 states and 27430 transitions. [2021-11-02 21:15:10,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:15:10,219 INFO L276 IsEmpty]: Start isEmpty. Operand 19430 states and 27430 transitions. [2021-11-02 21:15:10,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 21:15:10,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:15:10,219 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] [2021-11-02 21:15:10,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 21:15:10,220 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:15:10,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:15:10,221 INFO L85 PathProgramCache]: Analyzing trace with hash 229450765, now seen corresponding path program 1 times [2021-11-02 21:15:10,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:15:10,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082930138] [2021-11-02 21:15:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:15:10,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:15:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:15:10,467 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 21:15:10,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:15:10,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082930138] [2021-11-02 21:15:10,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082930138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:15:10,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:15:10,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:15:10,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89069677] [2021-11-02 21:15:10,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:15:10,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:15:10,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:15:10,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:15:10,469 INFO L87 Difference]: Start difference. First operand 19430 states and 27430 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 21:15:12,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:15:16,903 WARN L515 Checker$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 21:15:34,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:15:34,504 INFO L93 Difference]: Finished difference Result 31882 states and 44957 transitions. [2021-11-02 21:15:34,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:15:34,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-02 21:15:34,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:15:34,569 INFO L225 Difference]: With dead ends: 31882 [2021-11-02 21:15:34,569 INFO L226 Difference]: Without dead ends: 31880 [2021-11-02 21:15:34,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.91ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:15:34,583 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2196 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 4521 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21746.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.70ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4521 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23490.14ms IncrementalHoareTripleChecker+Time [2021-11-02 21:15:34,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2196 Valid, 0 Invalid, 4524 Unknown, 0 Unchecked, 23.70ms Time], IncrementalHoareTripleChecker [1 Valid, 4521 Invalid, 2 Unknown, 0 Unchecked, 23490.14ms Time] [2021-11-02 21:15:34,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31880 states. [2021-11-02 21:15:35,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31880 to 31788. [2021-11-02 21:15:35,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31788 states, 31729 states have (on average 1.415392858268461) internal successors, (44909), 31787 states have internal predecessors, (44909), 0 states have call successors, (0), 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 21:15:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31788 states to 31788 states and 44909 transitions. [2021-11-02 21:15:35,115 INFO L78 Accepts]: Start accepts. Automaton has 31788 states and 44909 transitions. Word has length 76 [2021-11-02 21:15:35,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:15:35,116 INFO L470 AbstractCegarLoop]: Abstraction has 31788 states and 44909 transitions. [2021-11-02 21:15:35,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 21:15:35,116 INFO L276 IsEmpty]: Start isEmpty. Operand 31788 states and 44909 transitions. [2021-11-02 21:15:35,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 21:15:35,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:15:35,117 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 21:15:35,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 21:15:35,117 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:15:35,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:15:35,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1476949075, now seen corresponding path program 1 times [2021-11-02 21:15:35,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:15:35,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511484174] [2021-11-02 21:15:35,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:15:35,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:15:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:15:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 21:15:35,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:15:35,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511484174] [2021-11-02 21:15:35,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511484174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:15:35,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:15:35,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:15:35,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089685992] [2021-11-02 21:15:35,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:15:35,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:15:35,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:15:35,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:15:35,393 INFO L87 Difference]: Start difference. First operand 31788 states and 44909 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 21:15:37,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:15:41,906 WARN L515 Checker$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 21:15:59,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:15:59,285 INFO L93 Difference]: Finished difference Result 31883 states and 44958 transitions. [2021-11-02 21:15:59,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:15:59,285 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 21:15:59,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:15:59,340 INFO L225 Difference]: With dead ends: 31883 [2021-11-02 21:15:59,341 INFO L226 Difference]: Without dead ends: 31881 [2021-11-02 21:15:59,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:15:59,354 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2193 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 4524 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21507.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2193 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.18ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4524 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23236.61ms IncrementalHoareTripleChecker+Time [2021-11-02 21:15:59,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2193 Valid, 0 Invalid, 4527 Unknown, 0 Unchecked, 23.18ms Time], IncrementalHoareTripleChecker [1 Valid, 4524 Invalid, 2 Unknown, 0 Unchecked, 23236.61ms Time] [2021-11-02 21:15:59,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31881 states. [2021-11-02 21:15:59,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31881 to 31789. [2021-11-02 21:15:59,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31789 states, 31730 states have (on average 1.415379766782225) internal successors, (44910), 31788 states have internal predecessors, (44910), 0 states have call successors, (0), 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 21:15:59,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31789 states to 31789 states and 44910 transitions. [2021-11-02 21:15:59,972 INFO L78 Accepts]: Start accepts. Automaton has 31789 states and 44910 transitions. Word has length 77 [2021-11-02 21:15:59,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:15:59,973 INFO L470 AbstractCegarLoop]: Abstraction has 31789 states and 44910 transitions. [2021-11-02 21:15:59,973 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 21:15:59,973 INFO L276 IsEmpty]: Start isEmpty. Operand 31789 states and 44910 transitions. [2021-11-02 21:15:59,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 21:15:59,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:15:59,974 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 21:15:59,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 21:15:59,974 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:15:59,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:15:59,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1459230743, now seen corresponding path program 1 times [2021-11-02 21:15:59,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:15:59,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658658272] [2021-11-02 21:15:59,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:15:59,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:16:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:16:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 21:16:00,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:16:00,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658658272] [2021-11-02 21:16:00,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658658272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:16:00,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:16:00,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:16:00,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344804486] [2021-11-02 21:16:00,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:16:00,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:16:00,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:16:00,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:16:00,180 INFO L87 Difference]: Start difference. First operand 31789 states and 44910 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 21:16:02,236 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:16:06,416 WARN L515 Checker$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 21:16:21,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:16:21,279 INFO L93 Difference]: Finished difference Result 31884 states and 44959 transitions. [2021-11-02 21:16:21,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:16:21,279 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 21:16:21,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:16:21,331 INFO L225 Difference]: With dead ends: 31884 [2021-11-02 21:16:21,332 INFO L226 Difference]: Without dead ends: 31882 [2021-11-02 21:16:21,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.69ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:16:21,345 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2190 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 4527 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19025.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2190 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.34ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4527 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20559.86ms IncrementalHoareTripleChecker+Time [2021-11-02 21:16:21,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2190 Valid, 0 Invalid, 4530 Unknown, 0 Unchecked, 19.34ms Time], IncrementalHoareTripleChecker [1 Valid, 4527 Invalid, 2 Unknown, 0 Unchecked, 20559.86ms Time] [2021-11-02 21:16:21,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31882 states. [2021-11-02 21:16:21,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31882 to 31790. [2021-11-02 21:16:21,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31790 states, 31731 states have (on average 1.4153666761211434) internal successors, (44911), 31789 states have internal predecessors, (44911), 0 states have call successors, (0), 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 21:16:21,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31790 states to 31790 states and 44911 transitions. [2021-11-02 21:16:21,932 INFO L78 Accepts]: Start accepts. Automaton has 31790 states and 44911 transitions. Word has length 78 [2021-11-02 21:16:21,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:16:21,932 INFO L470 AbstractCegarLoop]: Abstraction has 31790 states and 44911 transitions. [2021-11-02 21:16:21,933 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 21:16:21,933 INFO L276 IsEmpty]: Start isEmpty. Operand 31790 states and 44911 transitions. [2021-11-02 21:16:21,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 21:16:21,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:16:21,933 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 21:16:21,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 21:16:21,934 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:16:21,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:16:21,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2008475401, now seen corresponding path program 1 times [2021-11-02 21:16:21,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:16:21,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553904694] [2021-11-02 21:16:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:16:21,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:16:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:16:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 21:16:22,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:16:22,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553904694] [2021-11-02 21:16:22,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553904694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:16:22,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:16:22,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:16:22,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338822268] [2021-11-02 21:16:22,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:16:22,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:16:22,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:16:22,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:16:22,141 INFO L87 Difference]: Start difference. First operand 31790 states and 44911 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 21:16:24,193 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:16:27,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:16:40,748 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 21:16:46,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:16:46,672 INFO L93 Difference]: Finished difference Result 93042 states and 131788 transitions. [2021-11-02 21:16:46,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:16:46,673 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 21:16:46,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:16:46,790 INFO L225 Difference]: With dead ends: 93042 [2021-11-02 21:16:46,790 INFO L226 Difference]: Without dead ends: 61300 [2021-11-02 21:16:46,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:16:46,842 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2135 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 4821 mSolverCounterSat, 64 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21821.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2135 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.42ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 4821 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23500.05ms IncrementalHoareTripleChecker+Time [2021-11-02 21:16:46,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2135 Valid, 0 Invalid, 4887 Unknown, 0 Unchecked, 22.42ms Time], IncrementalHoareTripleChecker [64 Valid, 4821 Invalid, 2 Unknown, 0 Unchecked, 23500.05ms Time] [2021-11-02 21:16:46,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61300 states. [2021-11-02 21:16:47,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61300 to 55592. [2021-11-02 21:16:47,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55592 states, 55533 states have (on average 1.4144742765562819) internal successors, (78550), 55591 states have internal predecessors, (78550), 0 states have call successors, (0), 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 21:16:47,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55592 states to 55592 states and 78550 transitions. [2021-11-02 21:16:47,955 INFO L78 Accepts]: Start accepts. Automaton has 55592 states and 78550 transitions. Word has length 79 [2021-11-02 21:16:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:16:47,956 INFO L470 AbstractCegarLoop]: Abstraction has 55592 states and 78550 transitions. [2021-11-02 21:16:47,956 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 21:16:47,956 INFO L276 IsEmpty]: Start isEmpty. Operand 55592 states and 78550 transitions. [2021-11-02 21:16:47,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-02 21:16:47,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:16:47,957 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:47,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 21:16:47,958 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:16:47,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:16:47,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1520989265, now seen corresponding path program 1 times [2021-11-02 21:16:47,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:16:47,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085227492] [2021-11-02 21:16:47,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:16:47,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:16:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:16:48,157 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 21:16:48,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:16:48,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085227492] [2021-11-02 21:16:48,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085227492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:16:48,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:16:48,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:16:48,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427818293] [2021-11-02 21:16:48,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:16:48,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:16:48,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:16:48,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:16:48,159 INFO L87 Difference]: Start difference. First operand 55592 states and 78550 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:16:50,220 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 21:16:55,799 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 21:17:07,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:17:07,921 INFO L93 Difference]: Finished difference Result 55592 states and 78550 transitions. [2021-11-02 21:17:07,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:17:07,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-02 21:17:07,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:17:08,041 INFO L225 Difference]: With dead ends: 55592 [2021-11-02 21:17:08,042 INFO L226 Difference]: Without dead ends: 55564 [2021-11-02 21:17:08,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:17:08,066 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 904 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 20 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17730.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.73ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19043.36ms IncrementalHoareTripleChecker+Time [2021-11-02 21:17:08,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 0 Invalid, 3634 Unknown, 0 Unchecked, 18.73ms Time], IncrementalHoareTripleChecker [20 Valid, 3612 Invalid, 2 Unknown, 0 Unchecked, 19043.36ms Time] [2021-11-02 21:17:08,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55564 states. [2021-11-02 21:17:08,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55564 to 55564. [2021-11-02 21:17:09,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55564 states, 55519 states have (on average 1.4065094832399718) internal successors, (78088), 55563 states have internal predecessors, (78088), 0 states have call successors, (0), 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 21:17:09,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55564 states to 55564 states and 78088 transitions. [2021-11-02 21:17:09,145 INFO L78 Accepts]: Start accepts. Automaton has 55564 states and 78088 transitions. Word has length 105 [2021-11-02 21:17:09,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:17:09,145 INFO L470 AbstractCegarLoop]: Abstraction has 55564 states and 78088 transitions. [2021-11-02 21:17:09,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:17:09,146 INFO L276 IsEmpty]: Start isEmpty. Operand 55564 states and 78088 transitions. [2021-11-02 21:17:09,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-02 21:17:09,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:17:09,155 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 21:17:09,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 21:17:09,155 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:17:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:17:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1330431167, now seen corresponding path program 1 times [2021-11-02 21:17:09,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:17:09,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659205846] [2021-11-02 21:17:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:17:09,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:17:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:17:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 21:17:09,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:17:09,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659205846] [2021-11-02 21:17:09,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659205846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:17:09,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:17:09,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:17:09,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345262152] [2021-11-02 21:17:09,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:17:09,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:17:09,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:17:09,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:17:09,374 INFO L87 Difference]: Start difference. First operand 55564 states and 78088 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 21:17:11,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:17:17,907 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 21:17:41,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:17:41,368 INFO L93 Difference]: Finished difference Result 152731 states and 214590 transitions. [2021-11-02 21:17:41,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:17:41,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 129 [2021-11-02 21:17:41,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:17:41,565 INFO L225 Difference]: With dead ends: 152731 [2021-11-02 21:17:41,565 INFO L226 Difference]: Without dead ends: 97222 [2021-11-02 21:17:41,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:17:41,619 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2198 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 5798 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28067.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2198 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.87ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5798 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30208.35ms IncrementalHoareTripleChecker+Time [2021-11-02 21:17:41,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2198 Valid, 0 Invalid, 5804 Unknown, 0 Unchecked, 28.87ms Time], IncrementalHoareTripleChecker [4 Valid, 5798 Invalid, 2 Unknown, 0 Unchecked, 30208.35ms Time] [2021-11-02 21:17:41,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97222 states. [2021-11-02 21:17:42,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97222 to 55756. [2021-11-02 21:17:43,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55756 states, 55711 states have (on average 1.4051085063990953) internal successors, (78280), 55755 states have internal predecessors, (78280), 0 states have call successors, (0), 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 21:17:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55756 states to 55756 states and 78280 transitions. [2021-11-02 21:17:43,137 INFO L78 Accepts]: Start accepts. Automaton has 55756 states and 78280 transitions. Word has length 129 [2021-11-02 21:17:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:17:43,138 INFO L470 AbstractCegarLoop]: Abstraction has 55756 states and 78280 transitions. [2021-11-02 21:17:43,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 21:17:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 55756 states and 78280 transitions. [2021-11-02 21:17:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-02 21:17:43,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:17:43,161 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 21:17:43,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 21:17:43,163 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:17:43,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:17:43,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1549285885, now seen corresponding path program 1 times [2021-11-02 21:17:43,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:17:43,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389874530] [2021-11-02 21:17:43,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:17:43,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:17:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:17:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 21:17:43,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:17:43,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389874530] [2021-11-02 21:17:43,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389874530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:17:43,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:17:43,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:17:43,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936854877] [2021-11-02 21:17:43,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:17:43,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:17:43,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:17:43,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:17:43,797 INFO L87 Difference]: Start difference. First operand 55756 states and 78280 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 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 21:17:45,851 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 21:17:51,067 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 21:18:04,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:18:04,401 INFO L93 Difference]: Finished difference Result 55756 states and 78280 transitions. [2021-11-02 21:18:04,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:18:04,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 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 129 [2021-11-02 21:18:04,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:18:04,502 INFO L225 Difference]: With dead ends: 55756 [2021-11-02 21:18:04,503 INFO L226 Difference]: Without dead ends: 55738 [2021-11-02 21:18:04,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:18:04,524 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1195 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 3162 mSolverCounterSat, 22 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18302.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.04ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3162 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19739.36ms IncrementalHoareTripleChecker+Time [2021-11-02 21:18:04,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1195 Valid, 0 Invalid, 3186 Unknown, 0 Unchecked, 16.04ms Time], IncrementalHoareTripleChecker [22 Valid, 3162 Invalid, 2 Unknown, 0 Unchecked, 19739.36ms Time] [2021-11-02 21:18:04,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55738 states. [2021-11-02 21:18:05,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55738 to 43344. [2021-11-02 21:18:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43344 states, 43308 states have (on average 1.4000415627597673) internal successors, (60633), 43343 states have internal predecessors, (60633), 0 states have call successors, (0), 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 21:18:05,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43344 states to 43344 states and 60633 transitions. [2021-11-02 21:18:05,492 INFO L78 Accepts]: Start accepts. Automaton has 43344 states and 60633 transitions. Word has length 129 [2021-11-02 21:18:05,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:18:05,493 INFO L470 AbstractCegarLoop]: Abstraction has 43344 states and 60633 transitions. [2021-11-02 21:18:05,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 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 21:18:05,493 INFO L276 IsEmpty]: Start isEmpty. Operand 43344 states and 60633 transitions. [2021-11-02 21:18:05,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-02 21:18:05,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:18:05,501 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:18:05,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 21:18:05,501 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:18:05,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:18:05,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1808497280, now seen corresponding path program 1 times [2021-11-02 21:18:05,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:18:05,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200929740] [2021-11-02 21:18:05,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:18:05,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:18:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:18:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 21:18:05,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:18:05,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200929740] [2021-11-02 21:18:05,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200929740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:18:05,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:18:05,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 21:18:05,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235344099] [2021-11-02 21:18:05,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 21:18:05,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:18:05,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 21:18:05,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 21:18:05,754 INFO L87 Difference]: Start difference. First operand 43344 states and 60633 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 21:18:07,808 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 21:18:15,918 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 21:18:58,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:18:58,217 INFO L93 Difference]: Finished difference Result 152081 states and 213836 transitions. [2021-11-02 21:18:58,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 21:18:58,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 131 [2021-11-02 21:18:58,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:18:58,451 INFO L225 Difference]: With dead ends: 152081 [2021-11-02 21:18:58,451 INFO L226 Difference]: Without dead ends: 108792 [2021-11-02 21:18:58,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.29ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:18:58,522 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4415 mSDsluCounter, 6176 mSDsCounter, 0 mSdLazyCounter, 10582 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46426.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 107.08ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10582 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50069.51ms IncrementalHoareTripleChecker+Time [2021-11-02 21:18:58,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4415 Valid, 0 Invalid, 10586 Unknown, 0 Unchecked, 107.08ms Time], IncrementalHoareTripleChecker [2 Valid, 10582 Invalid, 2 Unknown, 0 Unchecked, 50069.51ms Time] [2021-11-02 21:18:58,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108792 states. [2021-11-02 21:19:00,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108792 to 43344. [2021-11-02 21:19:00,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43344 states, 43308 states have (on average 1.399256488408608) internal successors, (60599), 43343 states have internal predecessors, (60599), 0 states have call successors, (0), 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 21:19:00,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43344 states to 43344 states and 60599 transitions. [2021-11-02 21:19:00,209 INFO L78 Accepts]: Start accepts. Automaton has 43344 states and 60599 transitions. Word has length 131 [2021-11-02 21:19:00,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:19:00,210 INFO L470 AbstractCegarLoop]: Abstraction has 43344 states and 60599 transitions. [2021-11-02 21:19:00,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 21:19:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 43344 states and 60599 transitions. [2021-11-02 21:19:00,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-02 21:19:00,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:19:00,218 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:00,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 21:19:00,218 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:19:00,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:19:00,219 INFO L85 PathProgramCache]: Analyzing trace with hash 898122114, now seen corresponding path program 1 times [2021-11-02 21:19:00,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:19:00,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710578902] [2021-11-02 21:19:00,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:19:00,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:19:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:19:00,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 21:19:00,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:19:00,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710578902] [2021-11-02 21:19:00,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710578902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:19:00,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:19:00,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 21:19:00,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209766702] [2021-11-02 21:19:00,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 21:19:00,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:19:00,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 21:19:00,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 21:19:00,699 INFO L87 Difference]: Start difference. First operand 43344 states and 60599 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 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 21:19:02,771 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 21:19:13,602 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 21:20:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:20:20,973 INFO L93 Difference]: Finished difference Result 152115 states and 213836 transitions. [2021-11-02 21:20:20,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 21:20:20,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 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 131 [2021-11-02 21:20:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:20:21,209 INFO L225 Difference]: With dead ends: 152115 [2021-11-02 21:20:21,209 INFO L226 Difference]: Without dead ends: 108826 [2021-11-02 21:20:21,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 151.63ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 21:20:21,251 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4421 mSDsluCounter, 14298 mSDsCounter, 0 mSdLazyCounter, 19156 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72268.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4421 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 133.75ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 19156 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77474.64ms IncrementalHoareTripleChecker+Time [2021-11-02 21:20:21,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4421 Valid, 0 Invalid, 19172 Unknown, 0 Unchecked, 133.75ms Time], IncrementalHoareTripleChecker [14 Valid, 19156 Invalid, 2 Unknown, 0 Unchecked, 77474.64ms Time] [2021-11-02 21:20:21,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108826 states. [2021-11-02 21:20:22,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108826 to 43378. [2021-11-02 21:20:22,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43378 states, 43342 states have (on average 1.3989432882654238) internal successors, (60633), 43377 states have internal predecessors, (60633), 0 states have call successors, (0), 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 21:20:22,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43378 states to 43378 states and 60633 transitions. [2021-11-02 21:20:22,922 INFO L78 Accepts]: Start accepts. Automaton has 43378 states and 60633 transitions. Word has length 131 [2021-11-02 21:20:22,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:20:22,922 INFO L470 AbstractCegarLoop]: Abstraction has 43378 states and 60633 transitions. [2021-11-02 21:20:22,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 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 21:20:22,922 INFO L276 IsEmpty]: Start isEmpty. Operand 43378 states and 60633 transitions. [2021-11-02 21:20:22,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-02 21:20:22,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:20:22,930 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:22,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 21:20:22,931 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:20:22,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:20:22,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1465265166, now seen corresponding path program 1 times [2021-11-02 21:20:22,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:20:22,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622535567] [2021-11-02 21:20:22,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:20:22,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:20:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:20:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 21:20:23,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:20:23,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622535567] [2021-11-02 21:20:23,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622535567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:20:23,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:20:23,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 21:20:23,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663739596] [2021-11-02 21:20:23,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 21:20:23,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:20:23,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 21:20:23,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 21:20:23,296 INFO L87 Difference]: Start difference. First operand 43378 states and 60633 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 21:20:25,376 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 21:20:38,196 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 21:22:27,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:22:27,231 INFO L93 Difference]: Finished difference Result 214309 states and 301762 transitions. [2021-11-02 21:22:27,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 21:22:27,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 132 [2021-11-02 21:22:27,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:22:27,694 INFO L225 Difference]: With dead ends: 214309 [2021-11-02 21:22:27,694 INFO L226 Difference]: Without dead ends: 170986 [2021-11-02 21:22:27,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 277.39ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-02 21:22:27,760 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7262 mSDsluCounter, 23199 mSDsCounter, 0 mSdLazyCounter, 30194 mSolverCounterSat, 21 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110977.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7262 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 30217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 246.09ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 30194 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119039.32ms IncrementalHoareTripleChecker+Time [2021-11-02 21:22:27,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7262 Valid, 0 Invalid, 30217 Unknown, 0 Unchecked, 246.09ms Time], IncrementalHoareTripleChecker [21 Valid, 30194 Invalid, 2 Unknown, 0 Unchecked, 119039.32ms Time] [2021-11-02 21:22:27,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170986 states. [2021-11-02 21:22:29,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170986 to 43412. [2021-11-02 21:22:29,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43412 states, 43376 states have (on average 1.3986305791220952) internal successors, (60667), 43411 states have internal predecessors, (60667), 0 states have call successors, (0), 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 21:22:29,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43412 states to 43412 states and 60667 transitions. [2021-11-02 21:22:29,970 INFO L78 Accepts]: Start accepts. Automaton has 43412 states and 60667 transitions. Word has length 132 [2021-11-02 21:22:29,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:22:29,971 INFO L470 AbstractCegarLoop]: Abstraction has 43412 states and 60667 transitions. [2021-11-02 21:22:29,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 21:22:29,971 INFO L276 IsEmpty]: Start isEmpty. Operand 43412 states and 60667 transitions. [2021-11-02 21:22:29,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-02 21:22:29,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:22:29,979 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:22:29,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 21:22:29,979 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:22:29,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:22:29,980 INFO L85 PathProgramCache]: Analyzing trace with hash -814884930, now seen corresponding path program 1 times [2021-11-02 21:22:29,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:22:29,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994282267] [2021-11-02 21:22:29,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:22:29,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:22:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:22:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-02 21:22:30,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:22:30,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994282267] [2021-11-02 21:22:30,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994282267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:22:30,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:22:30,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:22:30,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571674924] [2021-11-02 21:22:30,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:22:30,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:22:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:22:30,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:22:30,242 INFO L87 Difference]: Start difference. First operand 43412 states and 60667 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 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 21:22:32,315 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 21:22:36,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:22:45,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:22:45,396 INFO L93 Difference]: Finished difference Result 43412 states and 60667 transitions. [2021-11-02 21:22:45,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:22:45,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 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 132 [2021-11-02 21:22:45,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:22:45,466 INFO L225 Difference]: With dead ends: 43412 [2021-11-02 21:22:45,466 INFO L226 Difference]: Without dead ends: 43410 [2021-11-02 21:22:45,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:22:45,479 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2122 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12774.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2122 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.00ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13925.47ms IncrementalHoareTripleChecker+Time [2021-11-02 21:22:45,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2122 Valid, 0 Invalid, 2244 Unknown, 0 Unchecked, 10.00ms Time], IncrementalHoareTripleChecker [0 Valid, 2242 Invalid, 2 Unknown, 0 Unchecked, 13925.47ms Time] [2021-11-02 21:22:45,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43410 states. [2021-11-02 21:22:46,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43410 to 43410. [2021-11-02 21:22:46,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43410 states, 43375 states have (on average 1.3985936599423632) internal successors, (60664), 43409 states have internal predecessors, (60664), 0 states have call successors, (0), 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 21:22:46,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43410 states to 43410 states and 60664 transitions. [2021-11-02 21:22:46,839 INFO L78 Accepts]: Start accepts. Automaton has 43410 states and 60664 transitions. Word has length 132 [2021-11-02 21:22:46,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:22:46,839 INFO L470 AbstractCegarLoop]: Abstraction has 43410 states and 60664 transitions. [2021-11-02 21:22:46,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 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 21:22:46,839 INFO L276 IsEmpty]: Start isEmpty. Operand 43410 states and 60664 transitions. [2021-11-02 21:22:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-02 21:22:46,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:22:46,848 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:22:46,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 21:22:46,848 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:22:46,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:22:46,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1713965116, now seen corresponding path program 1 times [2021-11-02 21:22:46,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:22:46,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872643551] [2021-11-02 21:22:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:22:46,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:22:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:22:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 21:22:47,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:22:47,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872643551] [2021-11-02 21:22:47,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872643551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:22:47,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:22:47,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 21:22:47,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946422539] [2021-11-02 21:22:47,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 21:22:47,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:22:47,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 21:22:47,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 21:22:47,168 INFO L87 Difference]: Start difference. First operand 43410 states and 60664 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 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 21:22:49,257 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 21:22:57,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:23:39,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:23:39,384 INFO L93 Difference]: Finished difference Result 176402 states and 248600 transitions. [2021-11-02 21:23:39,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 21:23:39,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 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 133 [2021-11-02 21:23:39,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:23:39,668 INFO L225 Difference]: With dead ends: 176402 [2021-11-02 21:23:39,668 INFO L226 Difference]: Without dead ends: 133047 [2021-11-02 21:23:39,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.70ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:23:39,738 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5703 mSDsluCounter, 6643 mSDsCounter, 0 mSdLazyCounter, 11033 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44560.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5703 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 78.98ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 11033 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48088.51ms IncrementalHoareTripleChecker+Time [2021-11-02 21:23:39,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5703 Valid, 0 Invalid, 11054 Unknown, 0 Unchecked, 78.98ms Time], IncrementalHoareTripleChecker [19 Valid, 11033 Invalid, 2 Unknown, 0 Unchecked, 48088.51ms Time] [2021-11-02 21:23:39,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133047 states. [2021-11-02 21:23:41,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133047 to 43410. [2021-11-02 21:23:41,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43410 states, 43375 states have (on average 1.393106628242075) internal successors, (60426), 43409 states have internal predecessors, (60426), 0 states have call successors, (0), 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 21:23:42,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43410 states to 43410 states and 60426 transitions. [2021-11-02 21:23:42,052 INFO L78 Accepts]: Start accepts. Automaton has 43410 states and 60426 transitions. Word has length 133 [2021-11-02 21:23:42,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:23:42,052 INFO L470 AbstractCegarLoop]: Abstraction has 43410 states and 60426 transitions. [2021-11-02 21:23:42,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 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 21:23:42,052 INFO L276 IsEmpty]: Start isEmpty. Operand 43410 states and 60426 transitions. [2021-11-02 21:23:42,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-02 21:23:42,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:23:42,062 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:23:42,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 21:23:42,062 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:23:42,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:23:42,063 INFO L85 PathProgramCache]: Analyzing trace with hash 508382748, now seen corresponding path program 1 times [2021-11-02 21:23:42,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:23:42,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397748913] [2021-11-02 21:23:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:23:42,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:23:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:23:42,321 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-02 21:23:42,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:23:42,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397748913] [2021-11-02 21:23:42,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397748913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:23:42,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:23:42,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:23:42,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713616685] [2021-11-02 21:23:42,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:23:42,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:23:42,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:23:42,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:23:42,324 INFO L87 Difference]: Start difference. First operand 43410 states and 60426 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 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 21:23:44,388 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 21:23:49,238 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 21:23:58,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:23:58,829 INFO L93 Difference]: Finished difference Result 43410 states and 60426 transitions. [2021-11-02 21:23:58,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:23:58,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 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 133 [2021-11-02 21:23:58,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:23:58,905 INFO L225 Difference]: With dead ends: 43410 [2021-11-02 21:23:58,905 INFO L226 Difference]: Without dead ends: 43408 [2021-11-02 21:23:58,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:23:58,920 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2105 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13868.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15045.03ms IncrementalHoareTripleChecker+Time [2021-11-02 21:23:58,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2105 Valid, 0 Invalid, 2228 Unknown, 0 Unchecked, 12.21ms Time], IncrementalHoareTripleChecker [0 Valid, 2226 Invalid, 2 Unknown, 0 Unchecked, 15045.03ms Time] [2021-11-02 21:23:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43408 states. [2021-11-02 21:24:00,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43408 to 43408. [2021-11-02 21:24:00,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43408 states, 43374 states have (on average 1.39306958085489) internal successors, (60423), 43407 states have internal predecessors, (60423), 0 states have call successors, (0), 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 21:24:00,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43408 states to 43408 states and 60423 transitions. [2021-11-02 21:24:00,545 INFO L78 Accepts]: Start accepts. Automaton has 43408 states and 60423 transitions. Word has length 133 [2021-11-02 21:24:00,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:24:00,545 INFO L470 AbstractCegarLoop]: Abstraction has 43408 states and 60423 transitions. [2021-11-02 21:24:00,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 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 21:24:00,546 INFO L276 IsEmpty]: Start isEmpty. Operand 43408 states and 60423 transitions. [2021-11-02 21:24:00,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-02 21:24:00,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:24:00,558 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:24:00,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 21:24:00,558 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:24:00,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:24:00,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1419992184, now seen corresponding path program 1 times [2021-11-02 21:24:00,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:24:00,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723891157] [2021-11-02 21:24:00,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:24:00,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:24:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:24:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-02 21:24:00,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:24:00,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723891157] [2021-11-02 21:24:00,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723891157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:24:00,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:24:00,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:24:00,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643036152] [2021-11-02 21:24:00,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:24:00,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:24:00,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:24:00,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:24:00,847 INFO L87 Difference]: Start difference. First operand 43408 states and 60423 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 21:24:02,913 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 21:24:07,527 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 21:24:16,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:24:16,853 INFO L93 Difference]: Finished difference Result 43408 states and 60423 transitions. [2021-11-02 21:24:16,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:24:16,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 134 [2021-11-02 21:24:16,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:24:16,929 INFO L225 Difference]: With dead ends: 43408 [2021-11-02 21:24:16,929 INFO L226 Difference]: Without dead ends: 43400 [2021-11-02 21:24:16,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:24:16,945 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2102 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13254.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2102 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.05ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14410.76ms IncrementalHoareTripleChecker+Time [2021-11-02 21:24:16,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2102 Valid, 0 Invalid, 2226 Unknown, 0 Unchecked, 12.05ms Time], IncrementalHoareTripleChecker [0 Valid, 2224 Invalid, 2 Unknown, 0 Unchecked, 14410.76ms Time] [2021-11-02 21:24:16,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43400 states. [2021-11-02 21:24:18,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43400 to 21918. [2021-11-02 21:24:18,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21918 states, 21885 states have (on average 1.391409641306831) internal successors, (30451), 21917 states have internal predecessors, (30451), 0 states have call successors, (0), 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 21:24:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21918 states to 21918 states and 30451 transitions. [2021-11-02 21:24:18,155 INFO L78 Accepts]: Start accepts. Automaton has 21918 states and 30451 transitions. Word has length 134 [2021-11-02 21:24:18,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:24:18,155 INFO L470 AbstractCegarLoop]: Abstraction has 21918 states and 30451 transitions. [2021-11-02 21:24:18,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 21:24:18,156 INFO L276 IsEmpty]: Start isEmpty. Operand 21918 states and 30451 transitions. [2021-11-02 21:24:18,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-02 21:24:18,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:24:18,167 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:24:18,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 21:24:18,168 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:24:18,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:24:18,168 INFO L85 PathProgramCache]: Analyzing trace with hash 64021527, now seen corresponding path program 1 times [2021-11-02 21:24:18,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:24:18,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994615181] [2021-11-02 21:24:18,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:24:18,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:24:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:24:18,509 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 21:24:18,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:24:18,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994615181] [2021-11-02 21:24:18,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994615181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:24:18,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:24:18,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 21:24:18,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126958751] [2021-11-02 21:24:18,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 21:24:18,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:24:18,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 21:24:18,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:24:18,512 INFO L87 Difference]: Start difference. First operand 21918 states and 30451 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 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 21:24:20,587 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 21:24:30,484 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 21:25:28,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:25:28,398 INFO L93 Difference]: Finished difference Result 58173 states and 81234 transitions. [2021-11-02 21:25:28,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 21:25:28,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 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 136 [2021-11-02 21:25:28,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:25:28,456 INFO L225 Difference]: With dead ends: 58173 [2021-11-02 21:25:28,456 INFO L226 Difference]: Without dead ends: 36310 [2021-11-02 21:25:28,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 105.76ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 21:25:28,484 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5699 mSDsluCounter, 9211 mSDsCounter, 0 mSdLazyCounter, 15481 mSolverCounterSat, 108 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62429.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5699 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 117.14ms SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 15481 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67251.79ms IncrementalHoareTripleChecker+Time [2021-11-02 21:25:28,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5699 Valid, 0 Invalid, 15591 Unknown, 0 Unchecked, 117.14ms Time], IncrementalHoareTripleChecker [108 Valid, 15481 Invalid, 2 Unknown, 0 Unchecked, 67251.79ms Time] [2021-11-02 21:25:28,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36310 states. [2021-11-02 21:25:29,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36310 to 13200. [2021-11-02 21:25:29,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13200 states, 13184 states have (on average 1.3668841019417475) internal successors, (18021), 13199 states have internal predecessors, (18021), 0 states have call successors, (0), 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 21:25:29,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13200 states to 13200 states and 18021 transitions. [2021-11-02 21:25:29,395 INFO L78 Accepts]: Start accepts. Automaton has 13200 states and 18021 transitions. Word has length 136 [2021-11-02 21:25:29,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:25:29,395 INFO L470 AbstractCegarLoop]: Abstraction has 13200 states and 18021 transitions. [2021-11-02 21:25:29,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 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 21:25:29,396 INFO L276 IsEmpty]: Start isEmpty. Operand 13200 states and 18021 transitions. [2021-11-02 21:25:29,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-02 21:25:29,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:25:29,407 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:25:29,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 21:25:29,407 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-02 21:25:29,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:25:29,408 INFO L85 PathProgramCache]: Analyzing trace with hash 725023032, now seen corresponding path program 1 times [2021-11-02 21:25:29,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:25:29,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167310134] [2021-11-02 21:25:29,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:25:29,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:25:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:25:29,686 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 21:25:29,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:25:29,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167310134] [2021-11-02 21:25:29,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167310134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:25:29,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:25:29,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 21:25:29,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795561696] [2021-11-02 21:25:29,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 21:25:29,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:25:29,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 21:25:29,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:25:29,687 INFO L87 Difference]: Start difference. First operand 13200 states and 18021 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 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 21:25:31,763 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 21:25:41,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15