./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.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-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.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 106df4f5c2a241158f9b42d6bacea5fef4152f7015c080096ac6f687357e10b4 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 17:33:11,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 17:33:11,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 17:33:11,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 17:33:11,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 17:33:11,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 17:33:11,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 17:33:11,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 17:33:11,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 17:33:11,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 17:33:11,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 17:33:11,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 17:33:11,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 17:33:11,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 17:33:11,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 17:33:11,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 17:33:11,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 17:33:11,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 17:33:11,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 17:33:11,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 17:33:11,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 17:33:11,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 17:33:11,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 17:33:11,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 17:33:11,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 17:33:11,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 17:33:11,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 17:33:11,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 17:33:11,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 17:33:11,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 17:33:11,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 17:33:11,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 17:33:11,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 17:33:11,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 17:33:11,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 17:33:11,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 17:33:11,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 17:33:11,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 17:33:11,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 17:33:11,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 17:33:11,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 17:33:11,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 17:33:11,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 17:33:11,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 17:33:11,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 17:33:11,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 17:33:11,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 17:33:11,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 17:33:11,682 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 17:33:11,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 17:33:11,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 17:33:11,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 17:33:11,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 17:33:11,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 17:33:11,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 17:33:11,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 17:33:11,684 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 17:33:11,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 17:33:11,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 17:33:11,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 17:33:11,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 17:33:11,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 17:33:11,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 17:33:11,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 17:33:11,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 17:33:11,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 17:33:11,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 17:33:11,686 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 17:33:11,687 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 17:33:11,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 17:33:11,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 17:33:11,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 106df4f5c2a241158f9b42d6bacea5fef4152f7015c080096ac6f687357e10b4 [2021-11-02 17:33:11,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 17:33:11,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 17:33:11,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 17:33:11,985 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 17:33:11,986 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 17:33:11,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-11-02 17:33:12,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6d989b20/b8d6fa4cd2b3461d88b24f7f5cde9818/FLAG6448f0fc8 [2021-11-02 17:33:12,977 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 17:33:12,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-11-02 17:33:13,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6d989b20/b8d6fa4cd2b3461d88b24f7f5cde9818/FLAG6448f0fc8 [2021-11-02 17:33:13,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6d989b20/b8d6fa4cd2b3461d88b24f7f5cde9818 [2021-11-02 17:33:13,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 17:33:13,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 17:33:13,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 17:33:13,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 17:33:13,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 17:33:13,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 05:33:13" (1/1) ... [2021-11-02 17:33:13,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@131be9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:33:13, skipping insertion in model container [2021-11-02 17:33:13,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 05:33:13" (1/1) ... [2021-11-02 17:33:13,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 17:33:13,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 17:33:14,855 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-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i[247200,247213] [2021-11-02 17:33:15,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 17:33:15,030 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 17:33:15,348 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-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i[247200,247213] [2021-11-02 17:33:15,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 17:33:15,418 INFO L208 MainTranslator]: Completed translation [2021-11-02 17:33:15,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:33:15 WrapperNode [2021-11-02 17:33:15,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 17:33:15,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 17:33:15,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 17:33:15,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 17:33:15,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:33:15" (1/1) ... [2021-11-02 17:33:15,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:33:15" (1/1) ... [2021-11-02 17:33:15,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 17:33:15,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 17:33:15,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 17:33:15,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 17:33:15,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:33:15" (1/1) ... [2021-11-02 17:33:15,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:33:15" (1/1) ... [2021-11-02 17:33:15,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:33:15" (1/1) ... [2021-11-02 17:33:15,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:33:15" (1/1) ... [2021-11-02 17:33:16,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:33:15" (1/1) ... [2021-11-02 17:33:16,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:33:15" (1/1) ... [2021-11-02 17:33:16,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:33:15" (1/1) ... [2021-11-02 17:33:16,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 17:33:16,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 17:33:16,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 17:33:16,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 17:33:16,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:33:15" (1/1) ... [2021-11-02 17:33:16,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 17:33:16,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:33:16,380 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 17:33:16,407 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 17:33:16,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 17:33:16,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 17:33:16,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 17:33:16,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 17:33:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 17:33:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 17:33:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 17:33:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 17:33:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 17:33:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 17:33:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 17:33:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 17:33:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 17:33:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 17:33:16,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 17:33:22,030 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 17:33:22,030 INFO L299 CfgBuilder]: Removed 1570 assume(true) statements. [2021-11-02 17:33:22,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 05:33:22 BoogieIcfgContainer [2021-11-02 17:33:22,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 17:33:22,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 17:33:22,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 17:33:22,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 17:33:22,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 05:33:13" (1/3) ... [2021-11-02 17:33:22,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2741b761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 05:33:22, skipping insertion in model container [2021-11-02 17:33:22,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:33:15" (2/3) ... [2021-11-02 17:33:22,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2741b761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 05:33:22, skipping insertion in model container [2021-11-02 17:33:22,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 05:33:22" (3/3) ... [2021-11-02 17:33:22,044 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-11-02 17:33:22,052 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 17:33:22,052 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2021-11-02 17:33:22,105 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 17:33:22,111 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 17:33:22,111 INFO L340 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2021-11-02 17:33:22,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 1769 states, 1706 states have (on average 1.4425556858147714) internal successors, (2461), 1768 states have internal predecessors, (2461), 0 states have call successors, (0), 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 17:33:22,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-02 17:33:22,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:33:22,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-02 17:33:22,168 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:33:22,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:33:22,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1070827562, now seen corresponding path program 1 times [2021-11-02 17:33:22,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:33:22,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837003937] [2021-11-02 17:33:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:33:22,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:33:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:33:22,666 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 17:33:22,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:33:22,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837003937] [2021-11-02 17:33:22,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837003937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:33:22,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:33:22,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:33:22,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422255889] [2021-11-02 17:33:22,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:33:22,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:33:22,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:33:22,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:33:22,722 INFO L87 Difference]: Start difference. First operand has 1769 states, 1706 states have (on average 1.4425556858147714) internal successors, (2461), 1768 states have internal predecessors, (2461), 0 states have call successors, (0), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 17:33:24,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:33:25,383 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:33:30,150 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 17:33:52,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:33:52,266 INFO L93 Difference]: Finished difference Result 5144 states and 7167 transitions. [2021-11-02 17:33:52,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:33:52,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-11-02 17:33:52,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:33:52,302 INFO L225 Difference]: With dead ends: 5144 [2021-11-02 17:33:52,302 INFO L226 Difference]: Without dead ends: 3367 [2021-11-02 17:33:52,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:33:52,313 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 2192 mSDsluCounter, 2310 mSDsCounter, 0 mSdLazyCounter, 4795 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26629.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2192 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 4816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.68ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 4795 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28825.85ms IncrementalHoareTripleChecker+Time [2021-11-02 17:33:52,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2192 Valid, 6 Invalid, 4816 Unknown, 0 Unchecked, 59.68ms Time], IncrementalHoareTripleChecker [20 Valid, 4795 Invalid, 1 Unknown, 0 Unchecked, 28825.85ms Time] [2021-11-02 17:33:52,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2021-11-02 17:33:52,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 3267. [2021-11-02 17:33:52,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3267 states, 3205 states have (on average 1.39594383775351) internal successors, (4474), 3266 states have internal predecessors, (4474), 0 states have call successors, (0), 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 17:33:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3267 states to 3267 states and 4474 transitions. [2021-11-02 17:33:52,546 INFO L78 Accepts]: Start accepts. Automaton has 3267 states and 4474 transitions. Word has length 6 [2021-11-02 17:33:52,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:33:52,547 INFO L470 AbstractCegarLoop]: Abstraction has 3267 states and 4474 transitions. [2021-11-02 17:33:52,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 17:33:52,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3267 states and 4474 transitions. [2021-11-02 17:33:52,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 17:33:52,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:33:52,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:33:52,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 17:33:52,553 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:33:52,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:33:52,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1164079702, now seen corresponding path program 1 times [2021-11-02 17:33:52,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:33:52,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275321318] [2021-11-02 17:33:52,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:33:52,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:33:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:33:52,760 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 17:33:52,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:33:52,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275321318] [2021-11-02 17:33:52,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275321318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:33:52,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:33:52,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:33:52,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129366074] [2021-11-02 17:33:52,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:33:52,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:33:52,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:33:52,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:33:52,769 INFO L87 Difference]: Start difference. First operand 3267 states and 4474 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 17:33:54,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:33:55,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:33:59,435 WARN L515 Checker$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 17:34:03,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:34:17,098 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:34:20,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:34:20,526 INFO L93 Difference]: Finished difference Result 6168 states and 8452 transitions. [2021-11-02 17:34:20,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:34:20,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-11-02 17:34:20,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:34:20,554 INFO L225 Difference]: With dead ends: 6168 [2021-11-02 17:34:20,555 INFO L226 Difference]: Without dead ends: 6166 [2021-11-02 17:34:20,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:34:20,560 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2026 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 4719 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25483.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2026 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.25ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4719 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27280.47ms IncrementalHoareTripleChecker+Time [2021-11-02 17:34:20,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2026 Valid, 0 Invalid, 4722 Unknown, 0 Unchecked, 28.25ms Time], IncrementalHoareTripleChecker [1 Valid, 4719 Invalid, 2 Unknown, 0 Unchecked, 27280.47ms Time] [2021-11-02 17:34:20,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6166 states. [2021-11-02 17:34:20,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6166 to 6036. [2021-11-02 17:34:20,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6036 states, 5974 states have (on average 1.3985604285236022) internal successors, (8355), 6035 states have internal predecessors, (8355), 0 states have call successors, (0), 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 17:34:20,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6036 states to 6036 states and 8355 transitions. [2021-11-02 17:34:20,726 INFO L78 Accepts]: Start accepts. Automaton has 6036 states and 8355 transitions. Word has length 7 [2021-11-02 17:34:20,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:34:20,727 INFO L470 AbstractCegarLoop]: Abstraction has 6036 states and 8355 transitions. [2021-11-02 17:34:20,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 17:34:20,728 INFO L276 IsEmpty]: Start isEmpty. Operand 6036 states and 8355 transitions. [2021-11-02 17:34:20,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 17:34:20,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:34:20,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:34:20,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 17:34:20,735 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr60ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:34:20,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:34:20,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1726728140, now seen corresponding path program 1 times [2021-11-02 17:34:20,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:34:20,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011840442] [2021-11-02 17:34:20,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:34:20,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:34:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:34:20,949 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 17:34:20,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:34:20,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011840442] [2021-11-02 17:34:20,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011840442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:34:20,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:34:20,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:34:20,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097406023] [2021-11-02 17:34:20,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:34:20,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:34:20,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:34:20,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:34:20,952 INFO L87 Difference]: Start difference. First operand 6036 states and 8355 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 17:34:22,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:34:23,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:34:27,609 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 17:34:45,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:34:45,866 INFO L93 Difference]: Finished difference Result 9126 states and 12596 transitions. [2021-11-02 17:34:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:34:45,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-11-02 17:34:45,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:34:45,900 INFO L225 Difference]: With dead ends: 9126 [2021-11-02 17:34:45,900 INFO L226 Difference]: Without dead ends: 9124 [2021-11-02 17:34:45,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:34:45,907 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2158 mSDsluCounter, 2358 mSDsCounter, 0 mSdLazyCounter, 4726 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22864.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.56ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4726 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24555.04ms IncrementalHoareTripleChecker+Time [2021-11-02 17:34:45,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2158 Valid, 0 Invalid, 4728 Unknown, 0 Unchecked, 16.56ms Time], IncrementalHoareTripleChecker [1 Valid, 4726 Invalid, 1 Unknown, 0 Unchecked, 24555.04ms Time] [2021-11-02 17:34:45,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9124 states. [2021-11-02 17:34:46,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9124 to 8988. [2021-11-02 17:34:46,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8988 states, 8926 states have (on average 1.4004033161550526) internal successors, (12500), 8987 states have internal predecessors, (12500), 0 states have call successors, (0), 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 17:34:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8988 states to 8988 states and 12500 transitions. [2021-11-02 17:34:46,211 INFO L78 Accepts]: Start accepts. Automaton has 8988 states and 12500 transitions. Word has length 8 [2021-11-02 17:34:46,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:34:46,211 INFO L470 AbstractCegarLoop]: Abstraction has 8988 states and 12500 transitions. [2021-11-02 17:34:46,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 17:34:46,212 INFO L276 IsEmpty]: Start isEmpty. Operand 8988 states and 12500 transitions. [2021-11-02 17:34:46,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 17:34:46,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:34:46,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:34:46,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 17:34:46,213 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:34:46,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:34:46,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1988960524, now seen corresponding path program 1 times [2021-11-02 17:34:46,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:34:46,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500792666] [2021-11-02 17:34:46,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:34:46,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:34:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:34:46,389 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 17:34:46,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:34:46,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500792666] [2021-11-02 17:34:46,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500792666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:34:46,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:34:46,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:34:46,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035917867] [2021-11-02 17:34:46,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:34:46,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:34:46,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:34:46,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:34:46,395 INFO L87 Difference]: Start difference. First operand 8988 states and 12500 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 17:34:47,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:34:49,022 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:34:53,194 WARN L515 Checker$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 17:34:59,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:35:15,997 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:35:17,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:35:17,865 INFO L93 Difference]: Finished difference Result 25739 states and 36083 transitions. [2021-11-02 17:35:17,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:35:17,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-02 17:35:17,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:35:17,918 INFO L225 Difference]: With dead ends: 25739 [2021-11-02 17:35:17,919 INFO L226 Difference]: Without dead ends: 16749 [2021-11-02 17:35:17,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:35:17,939 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2128 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 5162 mSolverCounterSat, 94 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28829.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2128 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.18ms SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 5162 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30882.74ms IncrementalHoareTripleChecker+Time [2021-11-02 17:35:17,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2128 Valid, 0 Invalid, 5258 Unknown, 0 Unchecked, 24.18ms Time], IncrementalHoareTripleChecker [94 Valid, 5162 Invalid, 2 Unknown, 0 Unchecked, 30882.74ms Time] [2021-11-02 17:35:17,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16749 states. [2021-11-02 17:35:18,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16749 to 15160. [2021-11-02 17:35:18,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15160 states, 15098 states have (on average 1.3920386806199496) internal successors, (21017), 15159 states have internal predecessors, (21017), 0 states have call successors, (0), 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 17:35:18,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15160 states to 15160 states and 21017 transitions. [2021-11-02 17:35:18,315 INFO L78 Accepts]: Start accepts. Automaton has 15160 states and 21017 transitions. Word has length 9 [2021-11-02 17:35:18,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:35:18,316 INFO L470 AbstractCegarLoop]: Abstraction has 15160 states and 21017 transitions. [2021-11-02 17:35:18,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 17:35:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 15160 states and 21017 transitions. [2021-11-02 17:35:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 17:35:18,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:35:18,327 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] [2021-11-02 17:35:18,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 17:35:18,327 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:35:18,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:35:18,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1584398266, now seen corresponding path program 1 times [2021-11-02 17:35:18,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:35:18,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384265830] [2021-11-02 17:35:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:35:18,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:35:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:35:18,557 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 17:35:18,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:35:18,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384265830] [2021-11-02 17:35:18,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384265830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:35:18,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:35:18,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 17:35:18,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274028053] [2021-11-02 17:35:18,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:35:18,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:35:18,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:35:18,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:35:18,561 INFO L87 Difference]: Start difference. First operand 15160 states and 21017 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 17:35:19,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:35:23,661 WARN L515 Checker$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 17:35:29,132 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 17:35:45,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:35:45,847 INFO L93 Difference]: Finished difference Result 45042 states and 62446 transitions. [2021-11-02 17:35:45,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:35:45,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-02 17:35:45,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:35:45,932 INFO L225 Difference]: With dead ends: 45042 [2021-11-02 17:35:45,932 INFO L226 Difference]: Without dead ends: 29884 [2021-11-02 17:35:45,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:35:45,957 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2162 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 4753 mSolverCounterSat, 173 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24787.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.15ms SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 4753 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26549.63ms IncrementalHoareTripleChecker+Time [2021-11-02 17:35:45,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2162 Valid, 0 Invalid, 4928 Unknown, 0 Unchecked, 19.15ms Time], IncrementalHoareTripleChecker [173 Valid, 4753 Invalid, 2 Unknown, 0 Unchecked, 26549.63ms Time] [2021-11-02 17:35:45,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29884 states. [2021-11-02 17:35:46,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29884 to 29552. [2021-11-02 17:35:46,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29552 states, 29490 states have (on average 1.3646998982706002) internal successors, (40245), 29551 states have internal predecessors, (40245), 0 states have call successors, (0), 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 17:35:46,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29552 states to 29552 states and 40245 transitions. [2021-11-02 17:35:46,545 INFO L78 Accepts]: Start accepts. Automaton has 29552 states and 40245 transitions. Word has length 62 [2021-11-02 17:35:46,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:35:46,546 INFO L470 AbstractCegarLoop]: Abstraction has 29552 states and 40245 transitions. [2021-11-02 17:35:46,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 17:35:46,546 INFO L276 IsEmpty]: Start isEmpty. Operand 29552 states and 40245 transitions. [2021-11-02 17:35:46,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 17:35:46,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:35:46,548 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] [2021-11-02 17:35:46,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 17:35:46,549 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:35:46,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:35:46,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1751479244, now seen corresponding path program 1 times [2021-11-02 17:35:46,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:35:46,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086790916] [2021-11-02 17:35:46,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:35:46,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:35:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:35:46,762 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 17:35:46,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:35:46,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086790916] [2021-11-02 17:35:46,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086790916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:35:46,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:35:46,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:35:46,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276972541] [2021-11-02 17:35:46,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:35:46,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:35:46,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:35:46,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:35:46,765 INFO L87 Difference]: Start difference. First operand 29552 states and 40245 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 17:35:53,156 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 17:35:59,574 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 17:36:08,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:36:08,279 INFO L93 Difference]: Finished difference Result 59102 states and 80488 transitions. [2021-11-02 17:36:08,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:36:08,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-02 17:36:08,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:36:08,345 INFO L225 Difference]: With dead ends: 59102 [2021-11-02 17:36:08,345 INFO L226 Difference]: Without dead ends: 29552 [2021-11-02 17:36:08,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:36:08,394 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 4708 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19547.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.00ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 4708 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20912.80ms IncrementalHoareTripleChecker+Time [2021-11-02 17:36:08,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 4722 Unknown, 0 Unchecked, 18.00ms Time], IncrementalHoareTripleChecker [12 Valid, 4708 Invalid, 2 Unknown, 0 Unchecked, 20912.80ms Time] [2021-11-02 17:36:08,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29552 states. [2021-11-02 17:36:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29552 to 29552. [2021-11-02 17:36:08,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29552 states, 29490 states have (on average 1.3614445574771108) internal successors, (40149), 29551 states have internal predecessors, (40149), 0 states have call successors, (0), 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 17:36:08,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29552 states to 29552 states and 40149 transitions. [2021-11-02 17:36:08,958 INFO L78 Accepts]: Start accepts. Automaton has 29552 states and 40149 transitions. Word has length 62 [2021-11-02 17:36:08,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:36:08,958 INFO L470 AbstractCegarLoop]: Abstraction has 29552 states and 40149 transitions. [2021-11-02 17:36:08,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 17:36:08,958 INFO L276 IsEmpty]: Start isEmpty. Operand 29552 states and 40149 transitions. [2021-11-02 17:36:08,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 17:36:08,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:36:08,960 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] [2021-11-02 17:36:08,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 17:36:08,961 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:36:08,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:36:08,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1962603724, now seen corresponding path program 1 times [2021-11-02 17:36:08,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:36:08,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242423919] [2021-11-02 17:36:08,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:36:08,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:36:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:36:09,288 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 17:36:09,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:36:09,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242423919] [2021-11-02 17:36:09,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242423919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:36:09,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:36:09,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 17:36:09,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239954865] [2021-11-02 17:36:09,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 17:36:09,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:36:09,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 17:36:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 17:36:09,290 INFO L87 Difference]: Start difference. First operand 29552 states and 40149 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 17:36:10,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:36:11,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:36:13,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:36:22,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:36:43,484 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:36:44,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:36:53,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:36:53,824 INFO L93 Difference]: Finished difference Result 87610 states and 118903 transitions. [2021-11-02 17:36:53,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 17:36:53,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-02 17:36:53,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:36:53,940 INFO L225 Difference]: With dead ends: 87610 [2021-11-02 17:36:53,941 INFO L226 Difference]: Without dead ends: 58060 [2021-11-02 17:36:53,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:36:53,992 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2122 mSDsluCounter, 6762 mSDsCounter, 0 mSdLazyCounter, 11285 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40355.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2122 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.22ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 11285 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43532.25ms IncrementalHoareTripleChecker+Time [2021-11-02 17:36:53,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2122 Valid, 0 Invalid, 11304 Unknown, 0 Unchecked, 54.22ms Time], IncrementalHoareTripleChecker [17 Valid, 11285 Invalid, 2 Unknown, 0 Unchecked, 43532.25ms Time] [2021-11-02 17:36:54,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58060 states. [2021-11-02 17:36:54,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58060 to 29552. [2021-11-02 17:36:54,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29552 states, 29490 states have (on average 1.3598168870803662) internal successors, (40101), 29551 states have internal predecessors, (40101), 0 states have call successors, (0), 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 17:36:54,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29552 states to 29552 states and 40101 transitions. [2021-11-02 17:36:54,928 INFO L78 Accepts]: Start accepts. Automaton has 29552 states and 40101 transitions. Word has length 63 [2021-11-02 17:36:54,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:36:54,930 INFO L470 AbstractCegarLoop]: Abstraction has 29552 states and 40101 transitions. [2021-11-02 17:36:54,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 17:36:54,930 INFO L276 IsEmpty]: Start isEmpty. Operand 29552 states and 40101 transitions. [2021-11-02 17:36:54,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 17:36:54,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:36:54,934 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] [2021-11-02 17:36:54,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 17:36:54,935 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:36:54,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:36:54,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1617824831, now seen corresponding path program 1 times [2021-11-02 17:36:54,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:36:54,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199909590] [2021-11-02 17:36:54,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:36:54,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:36:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:36:55,594 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 17:36:55,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:36:55,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199909590] [2021-11-02 17:36:55,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199909590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:36:55,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:36:55,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 17:36:55,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297286179] [2021-11-02 17:36:55,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:36:55,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:36:55,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:36:55,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:36:55,597 INFO L87 Difference]: Start difference. First operand 29552 states and 40101 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 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 17:36:56,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:36:59,763 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:37:11,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:37:16,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:37:16,584 INFO L93 Difference]: Finished difference Result 67193 states and 91291 transitions. [2021-11-02 17:37:16,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:37:16,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-02 17:37:16,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:37:16,636 INFO L225 Difference]: With dead ends: 67193 [2021-11-02 17:37:16,637 INFO L226 Difference]: Without dead ends: 37643 [2021-11-02 17:37:16,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.92ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:37:16,672 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1974 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 4775 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18676.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.61ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 4775 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20175.85ms IncrementalHoareTripleChecker+Time [2021-11-02 17:37:16,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1974 Valid, 0 Invalid, 4781 Unknown, 0 Unchecked, 62.61ms Time], IncrementalHoareTripleChecker [5 Valid, 4775 Invalid, 1 Unknown, 0 Unchecked, 20175.85ms Time] [2021-11-02 17:37:16,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37643 states. [2021-11-02 17:37:17,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37643 to 37120. [2021-11-02 17:37:17,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37120 states, 37058 states have (on average 1.3611365966862756) internal successors, (50441), 37119 states have internal predecessors, (50441), 0 states have call successors, (0), 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 17:37:17,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37120 states to 37120 states and 50441 transitions. [2021-11-02 17:37:17,487 INFO L78 Accepts]: Start accepts. Automaton has 37120 states and 50441 transitions. Word has length 63 [2021-11-02 17:37:17,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:37:17,488 INFO L470 AbstractCegarLoop]: Abstraction has 37120 states and 50441 transitions. [2021-11-02 17:37:17,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 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 17:37:17,488 INFO L276 IsEmpty]: Start isEmpty. Operand 37120 states and 50441 transitions. [2021-11-02 17:37:17,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 17:37:17,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:37:17,490 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 17:37:17,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 17:37:17,491 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:37:17,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:37:17,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1271548182, now seen corresponding path program 1 times [2021-11-02 17:37:17,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:37:17,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033048723] [2021-11-02 17:37:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:37:17,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:37:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:37:17,683 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 17:37:17,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:37:17,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033048723] [2021-11-02 17:37:17,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033048723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:37:17,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:37:17,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:37:17,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838098458] [2021-11-02 17:37:17,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:37:17,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:37:17,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:37:17,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:37:17,687 INFO L87 Difference]: Start difference. First operand 37120 states and 50441 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 17:37:19,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:37:20,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:37:23,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:37:26,476 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:37:36,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:37:36,852 INFO L93 Difference]: Finished difference Result 74526 states and 101358 transitions. [2021-11-02 17:37:36,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:37:36,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 17:37:36,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:37:36,903 INFO L225 Difference]: With dead ends: 74526 [2021-11-02 17:37:36,904 INFO L226 Difference]: Without dead ends: 37408 [2021-11-02 17:37:36,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:37:36,944 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1121 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 3599 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16980.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.52ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3599 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18329.32ms IncrementalHoareTripleChecker+Time [2021-11-02 17:37:36,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 0 Invalid, 3604 Unknown, 0 Unchecked, 8.52ms Time], IncrementalHoareTripleChecker [4 Valid, 3599 Invalid, 1 Unknown, 0 Unchecked, 18329.32ms Time] [2021-11-02 17:37:36,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37408 states. [2021-11-02 17:37:37,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37408 to 37408. [2021-11-02 17:37:37,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37408 states, 37346 states have (on average 1.3617254859958228) internal successors, (50855), 37407 states have internal predecessors, (50855), 0 states have call successors, (0), 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 17:37:37,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37408 states to 37408 states and 50855 transitions. [2021-11-02 17:37:37,774 INFO L78 Accepts]: Start accepts. Automaton has 37408 states and 50855 transitions. Word has length 77 [2021-11-02 17:37:37,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:37:37,775 INFO L470 AbstractCegarLoop]: Abstraction has 37408 states and 50855 transitions. [2021-11-02 17:37:37,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 17:37:37,775 INFO L276 IsEmpty]: Start isEmpty. Operand 37408 states and 50855 transitions. [2021-11-02 17:37:37,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 17:37:37,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:37:37,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:37:37,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 17:37:37,776 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:37:37,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:37:37,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1972753161, now seen corresponding path program 1 times [2021-11-02 17:37:37,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:37:37,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994999238] [2021-11-02 17:37:37,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:37:37,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:37:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:37:37,985 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 17:37:37,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:37:37,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994999238] [2021-11-02 17:37:37,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994999238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:37:37,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:37:37,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 17:37:37,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463011962] [2021-11-02 17:37:37,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 17:37:37,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:37:37,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 17:37:37,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:37:37,987 INFO L87 Difference]: Start difference. First operand 37408 states and 50855 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:37:38,997 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:37:40,070 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:37:42,101 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:37:43,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:37:47,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:37:53,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:37:59,400 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:38:10,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:38:13,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:38:26,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:38:32,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:38:32,380 INFO L93 Difference]: Finished difference Result 129284 states and 175706 transitions. [2021-11-02 17:38:32,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 17:38:32,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-02 17:38:32,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:38:32,526 INFO L225 Difference]: With dead ends: 129284 [2021-11-02 17:38:32,526 INFO L226 Difference]: Without dead ends: 91878 [2021-11-02 17:38:32,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 57.24ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 17:38:32,577 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8369 mSDsluCounter, 9418 mSDsCounter, 0 mSdLazyCounter, 13029 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48485.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8369 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.07ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13029 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52240.11ms IncrementalHoareTripleChecker+Time [2021-11-02 17:38:32,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8369 Valid, 0 Invalid, 13033 Unknown, 0 Unchecked, 55.07ms Time], IncrementalHoareTripleChecker [3 Valid, 13029 Invalid, 1 Unknown, 0 Unchecked, 52240.11ms Time] [2021-11-02 17:38:32,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91878 states. [2021-11-02 17:38:33,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91878 to 37504. [2021-11-02 17:38:33,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37504 states, 37442 states have (on average 1.36079803429304) internal successors, (50951), 37503 states have internal predecessors, (50951), 0 states have call successors, (0), 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 17:38:33,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37504 states to 37504 states and 50951 transitions. [2021-11-02 17:38:33,822 INFO L78 Accepts]: Start accepts. Automaton has 37504 states and 50951 transitions. Word has length 80 [2021-11-02 17:38:33,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:38:33,822 INFO L470 AbstractCegarLoop]: Abstraction has 37504 states and 50951 transitions. [2021-11-02 17:38:33,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:38:33,822 INFO L276 IsEmpty]: Start isEmpty. Operand 37504 states and 50951 transitions. [2021-11-02 17:38:33,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 17:38:33,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:38:33,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:38:33,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 17:38:33,824 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:38:33,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:38:33,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1905106492, now seen corresponding path program 1 times [2021-11-02 17:38:33,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:38:33,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650811161] [2021-11-02 17:38:33,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:38:33,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:38:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:38:34,002 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 17:38:34,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:38:34,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650811161] [2021-11-02 17:38:34,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650811161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:38:34,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:38:34,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:38:34,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553191740] [2021-11-02 17:38:34,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:38:34,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:38:34,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:38:34,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:38:34,005 INFO L87 Difference]: Start difference. First operand 37504 states and 50951 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:38:35,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:38:36,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:38:39,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:38:43,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:38:44,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:38:56,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:38:56,491 INFO L93 Difference]: Finished difference Result 75038 states and 101964 transitions. [2021-11-02 17:38:56,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:38:56,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-02 17:38:56,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:38:56,551 INFO L225 Difference]: With dead ends: 75038 [2021-11-02 17:38:56,551 INFO L226 Difference]: Without dead ends: 37536 [2021-11-02 17:38:56,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:38:56,594 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 4715 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19890.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4715 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21473.90ms IncrementalHoareTripleChecker+Time [2021-11-02 17:38:56,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 4716 Unknown, 0 Unchecked, 11.50ms Time], IncrementalHoareTripleChecker [0 Valid, 4715 Invalid, 1 Unknown, 0 Unchecked, 21473.90ms Time] [2021-11-02 17:38:56,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37536 states. [2021-11-02 17:38:57,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37536 to 37536. [2021-11-02 17:38:57,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37536 states, 37474 states have (on average 1.3604899396915195) internal successors, (50983), 37535 states have internal predecessors, (50983), 0 states have call successors, (0), 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 17:38:57,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37536 states to 37536 states and 50983 transitions. [2021-11-02 17:38:57,656 INFO L78 Accepts]: Start accepts. Automaton has 37536 states and 50983 transitions. Word has length 85 [2021-11-02 17:38:57,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:38:57,657 INFO L470 AbstractCegarLoop]: Abstraction has 37536 states and 50983 transitions. [2021-11-02 17:38:57,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:38:57,657 INFO L276 IsEmpty]: Start isEmpty. Operand 37536 states and 50983 transitions. [2021-11-02 17:38:57,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 17:38:57,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:38:57,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:38:57,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 17:38:57,659 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:38:57,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:38:57,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1387479996, now seen corresponding path program 1 times [2021-11-02 17:38:57,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:38:57,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558006764] [2021-11-02 17:38:57,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:38:57,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:38:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:38:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:38:57,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:38:57,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558006764] [2021-11-02 17:38:57,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558006764] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:38:57,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:38:57,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:38:57,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585581664] [2021-11-02 17:38:57,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:38:57,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:38:57,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:38:57,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:38:57,821 INFO L87 Difference]: Start difference. First operand 37536 states and 50983 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:38:58,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:39:00,068 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:39:03,419 WARN L515 Checker$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 17:39:06,964 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:39:10,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:39:11,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:39:21,120 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:39:26,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:39:26,861 INFO L93 Difference]: Finished difference Result 94978 states and 128818 transitions. [2021-11-02 17:39:26,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:39:26,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-02 17:39:26,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:39:26,958 INFO L225 Difference]: With dead ends: 94978 [2021-11-02 17:39:26,958 INFO L226 Difference]: Without dead ends: 57444 [2021-11-02 17:39:27,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:39:27,005 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1184 mSDsluCounter, 2353 mSDsCounter, 0 mSdLazyCounter, 5859 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25654.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.63ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5859 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27605.95ms IncrementalHoareTripleChecker+Time [2021-11-02 17:39:27,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1184 Valid, 0 Invalid, 5860 Unknown, 0 Unchecked, 13.63ms Time], IncrementalHoareTripleChecker [0 Valid, 5859 Invalid, 1 Unknown, 0 Unchecked, 27605.95ms Time] [2021-11-02 17:39:27,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57444 states. [2021-11-02 17:39:28,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57444 to 37568. [2021-11-02 17:39:28,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37568 states, 37506 states have (on average 1.3601823708206686) internal successors, (51015), 37567 states have internal predecessors, (51015), 0 states have call successors, (0), 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 17:39:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37568 states to 37568 states and 51015 transitions. [2021-11-02 17:39:28,189 INFO L78 Accepts]: Start accepts. Automaton has 37568 states and 51015 transitions. Word has length 86 [2021-11-02 17:39:28,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:39:28,190 INFO L470 AbstractCegarLoop]: Abstraction has 37568 states and 51015 transitions. [2021-11-02 17:39:28,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:39:28,190 INFO L276 IsEmpty]: Start isEmpty. Operand 37568 states and 51015 transitions. [2021-11-02 17:39:28,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 17:39:28,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:39:28,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:39:28,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 17:39:28,192 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:39:28,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:39:28,193 INFO L85 PathProgramCache]: Analyzing trace with hash 407769176, now seen corresponding path program 1 times [2021-11-02 17:39:28,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:39:28,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849066657] [2021-11-02 17:39:28,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:39:28,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:39:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:39:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:39:28,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:39:28,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849066657] [2021-11-02 17:39:28,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849066657] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:39:28,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433992039] [2021-11-02 17:39:28,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:39:28,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:39:28,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:39:28,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:39:28,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 17:39:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:39:29,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 2145 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 17:39:29,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:39:29,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 17:39:29,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:39:29,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433992039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:39:29,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:39:29,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:39:29,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852094583] [2021-11-02 17:39:29,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:39:29,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:39:29,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:39:29,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:39:29,398 INFO L87 Difference]: Start difference. First operand 37568 states and 51015 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:39:32,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:39:36,074 WARN L515 Checker$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 17:39:38,443 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:39:51,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:39:51,492 INFO L93 Difference]: Finished difference Result 75350 states and 102352 transitions. [2021-11-02 17:39:51,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:39:51,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-02 17:39:51,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:39:51,545 INFO L225 Difference]: With dead ends: 75350 [2021-11-02 17:39:51,545 INFO L226 Difference]: Without dead ends: 37784 [2021-11-02 17:39:51,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.35ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:39:51,572 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 4712 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19271.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.99ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 4712 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20914.60ms IncrementalHoareTripleChecker+Time [2021-11-02 17:39:51,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 4718 Unknown, 0 Unchecked, 11.99ms Time], IncrementalHoareTripleChecker [4 Valid, 4712 Invalid, 2 Unknown, 0 Unchecked, 20914.60ms Time] [2021-11-02 17:39:51,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37784 states. [2021-11-02 17:39:52,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37784 to 37622. [2021-11-02 17:39:52,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37622 states, 37560 states have (on average 1.3596645367412141) internal successors, (51069), 37621 states have internal predecessors, (51069), 0 states have call successors, (0), 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 17:39:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37622 states to 37622 states and 51069 transitions. [2021-11-02 17:39:52,533 INFO L78 Accepts]: Start accepts. Automaton has 37622 states and 51069 transitions. Word has length 92 [2021-11-02 17:39:52,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:39:52,534 INFO L470 AbstractCegarLoop]: Abstraction has 37622 states and 51069 transitions. [2021-11-02 17:39:52,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:39:52,534 INFO L276 IsEmpty]: Start isEmpty. Operand 37622 states and 51069 transitions. [2021-11-02 17:39:52,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 17:39:52,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:39:52,536 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] [2021-11-02 17:39:52,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 17:39:52,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-02 17:39:52,763 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:39:52,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:39:52,763 INFO L85 PathProgramCache]: Analyzing trace with hash -2129387210, now seen corresponding path program 1 times [2021-11-02 17:39:52,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:39:52,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523579907] [2021-11-02 17:39:52,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:39:52,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:39:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:39:52,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:39:52,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:39:52,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523579907] [2021-11-02 17:39:52,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523579907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:39:52,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:39:52,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 17:39:52,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242632227] [2021-11-02 17:39:52,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 17:39:52,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:39:52,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 17:39:52,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 17:39:52,920 INFO L87 Difference]: Start difference. First operand 37622 states and 51069 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 17:39:54,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:39:55,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:39:56,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:40:03,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:40:07,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:40:22,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:40:22,071 INFO L93 Difference]: Finished difference Result 75394 states and 102328 transitions. [2021-11-02 17:40:22,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 17:40:22,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-02 17:40:22,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:40:22,127 INFO L225 Difference]: With dead ends: 75394 [2021-11-02 17:40:22,127 INFO L226 Difference]: Without dead ends: 37768 [2021-11-02 17:40:22,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:40:22,156 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 4711 mSDsCounter, 0 mSdLazyCounter, 7090 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25580.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.78ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7090 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27806.46ms IncrementalHoareTripleChecker+Time [2021-11-02 17:40:22,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 7092 Unknown, 0 Unchecked, 17.78ms Time], IncrementalHoareTripleChecker [1 Valid, 7090 Invalid, 1 Unknown, 0 Unchecked, 27806.46ms Time] [2021-11-02 17:40:22,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37768 states. [2021-11-02 17:40:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37768 to 37655. [2021-11-02 17:40:23,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37655 states, 37593 states have (on average 1.3592956135450749) internal successors, (51100), 37654 states have internal predecessors, (51100), 0 states have call successors, (0), 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 17:40:23,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37655 states to 37655 states and 51100 transitions. [2021-11-02 17:40:23,082 INFO L78 Accepts]: Start accepts. Automaton has 37655 states and 51100 transitions. Word has length 94 [2021-11-02 17:40:23,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:40:23,082 INFO L470 AbstractCegarLoop]: Abstraction has 37655 states and 51100 transitions. [2021-11-02 17:40:23,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 17:40:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand 37655 states and 51100 transitions. [2021-11-02 17:40:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-02 17:40:23,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:40:23,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:40:23,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 17:40:23,084 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:40:23,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:40:23,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1368082611, now seen corresponding path program 1 times [2021-11-02 17:40:23,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:40:23,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395807587] [2021-11-02 17:40:23,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:40:23,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:40:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:40:23,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 17:40:23,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:40:23,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395807587] [2021-11-02 17:40:23,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395807587] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:40:23,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231914055] [2021-11-02 17:40:23,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:40:23,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:40:23,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:40:23,264 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:40:23,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 17:40:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:40:24,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 2175 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 17:40:24,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:40:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 17:40:24,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:40:24,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231914055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:40:24,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:40:24,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:40:24,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028394265] [2021-11-02 17:40:24,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:40:24,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:40:24,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:40:24,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:40:24,267 INFO L87 Difference]: Start difference. First operand 37655 states and 51100 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 17:40:26,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:40:32,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:40:36,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:40:45,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:40:45,561 INFO L93 Difference]: Finished difference Result 75416 states and 102360 transitions. [2021-11-02 17:40:45,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:40:45,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-02 17:40:45,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:40:45,612 INFO L225 Difference]: With dead ends: 75416 [2021-11-02 17:40:45,612 INFO L226 Difference]: Without dead ends: 37763 [2021-11-02 17:40:45,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.19ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:40:45,641 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 2343 mSDsCounter, 0 mSdLazyCounter, 4713 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18621.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.95ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 4713 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20205.07ms IncrementalHoareTripleChecker+Time [2021-11-02 17:40:45,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 4718 Unknown, 0 Unchecked, 11.95ms Time], IncrementalHoareTripleChecker [4 Valid, 4713 Invalid, 1 Unknown, 0 Unchecked, 20205.07ms Time] [2021-11-02 17:40:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37763 states. [2021-11-02 17:40:46,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37763 to 37709. [2021-11-02 17:40:46,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37709 states, 37647 states have (on average 1.3587802480941376) internal successors, (51154), 37708 states have internal predecessors, (51154), 0 states have call successors, (0), 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 17:40:46,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37709 states to 37709 states and 51154 transitions. [2021-11-02 17:40:46,627 INFO L78 Accepts]: Start accepts. Automaton has 37709 states and 51154 transitions. Word has length 95 [2021-11-02 17:40:46,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:40:46,627 INFO L470 AbstractCegarLoop]: Abstraction has 37709 states and 51154 transitions. [2021-11-02 17:40:46,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 17:40:46,627 INFO L276 IsEmpty]: Start isEmpty. Operand 37709 states and 51154 transitions. [2021-11-02 17:40:46,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 17:40:46,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:40:46,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:40:46,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 17:40:46,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-02 17:40:46,844 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:40:46,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:40:46,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1534866281, now seen corresponding path program 1 times [2021-11-02 17:40:46,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:40:46,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990169140] [2021-11-02 17:40:46,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:40:46,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:40:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:40:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 17:40:47,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:40:47,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990169140] [2021-11-02 17:40:47,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990169140] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:40:47,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681320221] [2021-11-02 17:40:47,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:40:47,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:40:47,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:40:47,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:40:47,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 17:40:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:40:47,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 2185 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:40:47,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:40:47,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 17:40:47,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:40:47,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681320221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:40:47,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:40:47,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:40:47,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092733090] [2021-11-02 17:40:47,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:40:47,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:40:47,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:40:47,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:40:47,977 INFO L87 Difference]: Start difference. First operand 37709 states and 51154 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:40:51,178 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:40:58,115 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 17:41:16,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:41:16,319 INFO L93 Difference]: Finished difference Result 90600 states and 122871 transitions. [2021-11-02 17:41:16,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:41:16,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-02 17:41:16,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:41:16,413 INFO L225 Difference]: With dead ends: 90600 [2021-11-02 17:41:16,413 INFO L226 Difference]: Without dead ends: 52893 [2021-11-02 17:41:16,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.90ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:41:16,460 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2025 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 6167 mSolverCounterSat, 57 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24754.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.07ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 6167 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26847.13ms IncrementalHoareTripleChecker+Time [2021-11-02 17:41:16,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2025 Valid, 0 Invalid, 6226 Unknown, 0 Unchecked, 15.07ms Time], IncrementalHoareTripleChecker [57 Valid, 6167 Invalid, 2 Unknown, 0 Unchecked, 26847.13ms Time] [2021-11-02 17:41:16,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52893 states. [2021-11-02 17:41:17,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52893 to 52459. [2021-11-02 17:41:17,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52459 states, 52397 states have (on average 1.3481306181651622) internal successors, (70638), 52458 states have internal predecessors, (70638), 0 states have call successors, (0), 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 17:41:17,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52459 states to 52459 states and 70638 transitions. [2021-11-02 17:41:17,848 INFO L78 Accepts]: Start accepts. Automaton has 52459 states and 70638 transitions. Word has length 97 [2021-11-02 17:41:17,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:41:17,848 INFO L470 AbstractCegarLoop]: Abstraction has 52459 states and 70638 transitions. [2021-11-02 17:41:17,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:41:17,849 INFO L276 IsEmpty]: Start isEmpty. Operand 52459 states and 70638 transitions. [2021-11-02 17:41:17,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 17:41:17,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:41:17,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:41:17,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 17:41:18,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:41:18,069 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:41:18,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:41:18,069 INFO L85 PathProgramCache]: Analyzing trace with hash -833801703, now seen corresponding path program 1 times [2021-11-02 17:41:18,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:41:18,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473870459] [2021-11-02 17:41:18,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:41:18,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:41:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:41:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 17:41:18,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:41:18,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473870459] [2021-11-02 17:41:18,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473870459] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:41:18,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843170015] [2021-11-02 17:41:18,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:41:18,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:41:18,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:41:18,238 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:41:18,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 17:41:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:41:19,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 2184 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 17:41:19,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:41:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 17:41:19,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 17:41:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 17:41:19,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843170015] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 17:41:19,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 17:41:19,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-02 17:41:19,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951913967] [2021-11-02 17:41:19,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 17:41:19,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:41:19,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 17:41:19,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-02 17:41:19,507 INFO L87 Difference]: Start difference. First operand 52459 states and 70638 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 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 17:41:21,559 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:41:22,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:41:25,129 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:41:27,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:41:29,351 WARN L515 Checker$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 17:41:40,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:41:44,952 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:41:46,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:41:54,864 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:41:56,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:41:57,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:42:40,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:42:40,293 INFO L93 Difference]: Finished difference Result 160618 states and 215808 transitions. [2021-11-02 17:42:40,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 17:42:40,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-02 17:42:40,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:42:40,481 INFO L225 Difference]: With dead ends: 160618 [2021-11-02 17:42:40,481 INFO L226 Difference]: Without dead ends: 108161 [2021-11-02 17:42:40,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 71.29ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-02 17:42:40,547 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2368 mSDsluCounter, 16334 mSDsCounter, 0 mSdLazyCounter, 19857 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72712.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2368 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.18ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19857 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77740.13ms IncrementalHoareTripleChecker+Time [2021-11-02 17:42:40,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2368 Valid, 0 Invalid, 19865 Unknown, 0 Unchecked, 59.18ms Time], IncrementalHoareTripleChecker [4 Valid, 19857 Invalid, 4 Unknown, 0 Unchecked, 77740.13ms Time] [2021-11-02 17:42:40,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108161 states. [2021-11-02 17:42:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108161 to 53035. [2021-11-02 17:42:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53035 states, 52973 states have (on average 1.346157476450267) internal successors, (71310), 53034 states have internal predecessors, (71310), 0 states have call successors, (0), 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 17:42:42,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53035 states to 53035 states and 71310 transitions. [2021-11-02 17:42:42,502 INFO L78 Accepts]: Start accepts. Automaton has 53035 states and 71310 transitions. Word has length 97 [2021-11-02 17:42:42,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:42:42,503 INFO L470 AbstractCegarLoop]: Abstraction has 53035 states and 71310 transitions. [2021-11-02 17:42:42,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 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 17:42:42,503 INFO L276 IsEmpty]: Start isEmpty. Operand 53035 states and 71310 transitions. [2021-11-02 17:42:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-02 17:42:42,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:42:42,504 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:42:42,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 17:42:42,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-02 17:42:42,710 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:42:42,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:42:42,711 INFO L85 PathProgramCache]: Analyzing trace with hash 493982861, now seen corresponding path program 2 times [2021-11-02 17:42:42,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:42:42,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802720560] [2021-11-02 17:42:42,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:42:42,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:42:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:42:42,881 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-02 17:42:42,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:42:42,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802720560] [2021-11-02 17:42:42,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802720560] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:42:42,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90615192] [2021-11-02 17:42:42,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 17:42:42,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:42:42,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:42:42,884 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:42:42,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 17:42:43,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 17:42:43,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 17:42:43,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 2103 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 17:42:43,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:42:43,814 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-02 17:42:43,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:42:43,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90615192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:42:43,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:42:43,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-02 17:42:43,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731792491] [2021-11-02 17:42:43,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 17:42:43,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:42:43,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 17:42:43,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 17:42:43,816 INFO L87 Difference]: Start difference. First operand 53035 states and 71310 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:42:44,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:42:45,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:42:47,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:42:48,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:42:57,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:43:06,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:43:27,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:43:35,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:43:35,851 INFO L93 Difference]: Finished difference Result 95777 states and 129048 transitions. [2021-11-02 17:43:35,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 17:43:35,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-02 17:43:35,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:43:36,001 INFO L225 Difference]: With dead ends: 95777 [2021-11-02 17:43:36,001 INFO L226 Difference]: Without dead ends: 95249 [2021-11-02 17:43:36,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 71.70ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-02 17:43:36,035 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6740 mSDsluCounter, 8005 mSDsCounter, 0 mSdLazyCounter, 12070 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45789.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6740 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.68ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 12070 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49384.33ms IncrementalHoareTripleChecker+Time [2021-11-02 17:43:36,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6740 Valid, 0 Invalid, 12115 Unknown, 0 Unchecked, 42.68ms Time], IncrementalHoareTripleChecker [44 Valid, 12070 Invalid, 1 Unknown, 0 Unchecked, 49384.33ms Time] [2021-11-02 17:43:36,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95249 states. [2021-11-02 17:43:37,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95249 to 52507. [2021-11-02 17:43:37,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52507 states, 52481 states have (on average 1.3419713801185191) internal successors, (70428), 52506 states have internal predecessors, (70428), 0 states have call successors, (0), 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 17:43:37,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52507 states to 52507 states and 70428 transitions. [2021-11-02 17:43:37,970 INFO L78 Accepts]: Start accepts. Automaton has 52507 states and 70428 transitions. Word has length 106 [2021-11-02 17:43:37,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:43:37,970 INFO L470 AbstractCegarLoop]: Abstraction has 52507 states and 70428 transitions. [2021-11-02 17:43:37,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:43:37,971 INFO L276 IsEmpty]: Start isEmpty. Operand 52507 states and 70428 transitions. [2021-11-02 17:43:37,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-02 17:43:37,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:43:37,973 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 17:43:37,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-02 17:43:38,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-02 17:43:38,180 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:43:38,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:43:38,180 INFO L85 PathProgramCache]: Analyzing trace with hash -175346826, now seen corresponding path program 1 times [2021-11-02 17:43:38,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:43:38,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394916127] [2021-11-02 17:43:38,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:43:38,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:43:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:43:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 17:43:38,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:43:38,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394916127] [2021-11-02 17:43:38,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394916127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:43:38,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:43:38,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:43:38,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12064825] [2021-11-02 17:43:38,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:43:38,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:43:38,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:43:38,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:43:38,339 INFO L87 Difference]: Start difference. First operand 52507 states and 70428 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 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 17:43:39,349 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 17:43:40,799 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:43:46,106 WARN L515 Checker$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 17:43:51,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:44:00,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:44:00,896 INFO L93 Difference]: Finished difference Result 105300 states and 141238 transitions. [2021-11-02 17:44:00,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:44:00,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 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 17:44:00,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:44:00,993 INFO L225 Difference]: With dead ends: 105300 [2021-11-02 17:44:00,993 INFO L226 Difference]: Without dead ends: 52795 [2021-11-02 17:44:01,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:44:01,043 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 4570 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19045.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.20ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4570 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20632.74ms IncrementalHoareTripleChecker+Time [2021-11-02 17:44:01,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 4573 Unknown, 0 Unchecked, 12.20ms Time], IncrementalHoareTripleChecker [2 Valid, 4570 Invalid, 1 Unknown, 0 Unchecked, 20632.74ms Time] [2021-11-02 17:44:01,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52795 states. [2021-11-02 17:44:02,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52795 to 52603. [2021-11-02 17:44:02,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52603 states, 52577 states have (on average 1.341346976814957) internal successors, (70524), 52602 states have internal predecessors, (70524), 0 states have call successors, (0), 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 17:44:02,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52603 states to 52603 states and 70524 transitions. [2021-11-02 17:44:02,850 INFO L78 Accepts]: Start accepts. Automaton has 52603 states and 70524 transitions. Word has length 133 [2021-11-02 17:44:02,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:44:02,850 INFO L470 AbstractCegarLoop]: Abstraction has 52603 states and 70524 transitions. [2021-11-02 17:44:02,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 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 17:44:02,850 INFO L276 IsEmpty]: Start isEmpty. Operand 52603 states and 70524 transitions. [2021-11-02 17:44:02,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-02 17:44:02,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:44:02,852 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 17:44:02,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 17:44:02,855 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:44:02,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:44:02,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1513139953, now seen corresponding path program 1 times [2021-11-02 17:44:02,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:44:02,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596118654] [2021-11-02 17:44:02,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:44:02,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:44:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:44:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 17:44:03,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:44:03,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596118654] [2021-11-02 17:44:03,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596118654] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:44:03,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792873870] [2021-11-02 17:44:03,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:44:03,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:44:03,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:44:03,041 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:44:03,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 17:44:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:44:03,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 17:44:03,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:44:04,036 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 17:44:04,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:44:04,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792873870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:44:04,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:44:04,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:44:04,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36852234] [2021-11-02 17:44:04,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:44:04,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:44:04,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:44:04,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:44:04,038 INFO L87 Difference]: Start difference. First operand 52603 states and 70524 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 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 17:44:05,422 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:44:06,786 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:44:14,005 WARN L515 Checker$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 17:44:17,229 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 17:44:28,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:44:28,574 INFO L93 Difference]: Finished difference Result 105636 states and 141622 transitions. [2021-11-02 17:44:28,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:44:28,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 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 17:44:28,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:44:28,659 INFO L225 Difference]: With dead ends: 105636 [2021-11-02 17:44:28,660 INFO L226 Difference]: Without dead ends: 53035 [2021-11-02 17:44:28,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.08ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:44:28,708 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 4567 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20833.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.81ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 4567 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22522.99ms IncrementalHoareTripleChecker+Time [2021-11-02 17:44:28,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 4573 Unknown, 0 Unchecked, 14.81ms Time], IncrementalHoareTripleChecker [4 Valid, 4567 Invalid, 2 Unknown, 0 Unchecked, 22522.99ms Time] [2021-11-02 17:44:28,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53035 states. [2021-11-02 17:44:30,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53035 to 52747. [2021-11-02 17:44:30,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52747 states, 52721 states have (on average 1.3404146355342272) internal successors, (70668), 52746 states have internal predecessors, (70668), 0 states have call successors, (0), 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 17:44:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52747 states to 52747 states and 70668 transitions. [2021-11-02 17:44:30,555 INFO L78 Accepts]: Start accepts. Automaton has 52747 states and 70668 transitions. Word has length 136 [2021-11-02 17:44:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:44:30,555 INFO L470 AbstractCegarLoop]: Abstraction has 52747 states and 70668 transitions. [2021-11-02 17:44:30,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 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 17:44:30,556 INFO L276 IsEmpty]: Start isEmpty. Operand 52747 states and 70668 transitions. [2021-11-02 17:44:30,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-02 17:44:30,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:44:30,558 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, 1, 1, 1] [2021-11-02 17:44:30,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 17:44:30,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:44:30,758 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:44:30,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:44:30,759 INFO L85 PathProgramCache]: Analyzing trace with hash -858689725, now seen corresponding path program 1 times [2021-11-02 17:44:30,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:44:30,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338668406] [2021-11-02 17:44:30,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:44:30,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:44:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:44:30,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 17:44:30,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:44:30,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338668406] [2021-11-02 17:44:30,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338668406] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:44:30,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63037836] [2021-11-02 17:44:30,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:44:30,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:44:30,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:44:30,931 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:44:30,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 17:44:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:44:31,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 2452 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:44:31,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:44:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 17:44:31,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:44:31,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63037836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:44:31,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:44:31,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:44:31,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058956373] [2021-11-02 17:44:31,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:44:31,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:44:31,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:44:31,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:44:31,829 INFO L87 Difference]: Start difference. First operand 52747 states and 70668 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 17:44:33,866 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 17:44:40,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:44:56,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:45:01,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:45:01,913 INFO L93 Difference]: Finished difference Result 118535 states and 158826 transitions. [2021-11-02 17:45:01,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:45:01,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 139 [2021-11-02 17:45:01,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:45:02,025 INFO L225 Difference]: With dead ends: 118535 [2021-11-02 17:45:02,025 INFO L226 Difference]: Without dead ends: 65790 [2021-11-02 17:45:02,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.63ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:45:02,089 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2079 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 6554 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25678.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2079 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.72ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 6554 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27680.05ms IncrementalHoareTripleChecker+Time [2021-11-02 17:45:02,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2079 Valid, 0 Invalid, 6568 Unknown, 0 Unchecked, 16.72ms Time], IncrementalHoareTripleChecker [12 Valid, 6554 Invalid, 2 Unknown, 0 Unchecked, 27680.05ms Time] [2021-11-02 17:45:02,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65790 states. [2021-11-02 17:45:03,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65790 to 53020. [2021-11-02 17:45:03,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53020 states, 52994 states have (on average 1.3393969128580594) internal successors, (70980), 53019 states have internal predecessors, (70980), 0 states have call successors, (0), 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 17:45:04,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53020 states to 53020 states and 70980 transitions. [2021-11-02 17:45:04,072 INFO L78 Accepts]: Start accepts. Automaton has 53020 states and 70980 transitions. Word has length 139 [2021-11-02 17:45:04,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:45:04,073 INFO L470 AbstractCegarLoop]: Abstraction has 53020 states and 70980 transitions. [2021-11-02 17:45:04,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 17:45:04,073 INFO L276 IsEmpty]: Start isEmpty. Operand 53020 states and 70980 transitions. [2021-11-02 17:45:04,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-02 17:45:04,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:45:04,075 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, 1, 1, 1] [2021-11-02 17:45:04,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 17:45:04,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:45:04,276 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:45:04,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:45:04,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1668036351, now seen corresponding path program 1 times [2021-11-02 17:45:04,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:45:04,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246431983] [2021-11-02 17:45:04,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:45:04,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:45:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:45:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 17:45:04,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:45:04,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246431983] [2021-11-02 17:45:04,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246431983] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:45:04,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931169177] [2021-11-02 17:45:04,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:45:04,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:45:04,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:45:04,516 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:45:04,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 17:45:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:45:05,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 2451 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:45:05,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:45:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 17:45:05,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 17:45:05,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 17:45:05,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931169177] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 17:45:05,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 17:45:05,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-02 17:45:05,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128911098] [2021-11-02 17:45:05,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 17:45:05,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:45:05,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 17:45:05,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-02 17:45:05,984 INFO L87 Difference]: Start difference. First operand 53020 states and 70980 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 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 17:45:07,131 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:45:08,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:45:10,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:45:18,604 WARN L515 Checker$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 17:45:21,798 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:45:26,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:45:38,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:45:38,122 INFO L93 Difference]: Finished difference Result 106902 states and 143110 transitions. [2021-11-02 17:45:38,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 17:45:38,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 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 139 [2021-11-02 17:45:38,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:45:38,210 INFO L225 Difference]: With dead ends: 106902 [2021-11-02 17:45:38,211 INFO L226 Difference]: Without dead ends: 53884 [2021-11-02 17:45:38,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 59.11ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-02 17:45:38,260 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 4548 mSDsCounter, 0 mSdLazyCounter, 6867 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27837.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.77ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6867 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30058.90ms IncrementalHoareTripleChecker+Time [2021-11-02 17:45:38,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 6884 Unknown, 0 Unchecked, 19.77ms Time], IncrementalHoareTripleChecker [15 Valid, 6867 Invalid, 2 Unknown, 0 Unchecked, 30058.90ms Time] [2021-11-02 17:45:38,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53884 states. [2021-11-02 17:45:40,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53884 to 53884. [2021-11-02 17:45:40,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53884 states, 53858 states have (on average 1.3339522447918601) internal successors, (71844), 53883 states have internal predecessors, (71844), 0 states have call successors, (0), 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 17:45:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53884 states to 53884 states and 71844 transitions. [2021-11-02 17:45:40,205 INFO L78 Accepts]: Start accepts. Automaton has 53884 states and 71844 transitions. Word has length 139 [2021-11-02 17:45:40,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:45:40,206 INFO L470 AbstractCegarLoop]: Abstraction has 53884 states and 71844 transitions. [2021-11-02 17:45:40,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 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 17:45:40,206 INFO L276 IsEmpty]: Start isEmpty. Operand 53884 states and 71844 transitions. [2021-11-02 17:45:40,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-02 17:45:40,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:45:40,208 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:40,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 17:45:40,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-02 17:45:40,409 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 59 more)] === [2021-11-02 17:45:40,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:45:40,409 INFO L85 PathProgramCache]: Analyzing trace with hash -745602563, now seen corresponding path program 1 times [2021-11-02 17:45:40,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:45:40,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329927519] [2021-11-02 17:45:40,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:45:40,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:45:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:45:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-02 17:45:40,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:45:40,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329927519] [2021-11-02 17:45:40,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329927519] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:45:40,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118690146] [2021-11-02 17:45:40,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:45:40,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:45:40,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:45:40,595 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:45:40,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 17:45:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:45:41,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 2634 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 17:45:41,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:45:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 17:45:41,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 17:45:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 17:45:42,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118690146] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 17:45:42,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 17:45:42,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2021-11-02 17:45:42,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690276722] [2021-11-02 17:45:42,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 17:45:42,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:45:42,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 17:45:42,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-11-02 17:45:42,105 INFO L87 Difference]: Start difference. First operand 53884 states and 71844 transitions. Second operand has 14 states, 14 states have (on average 11.5) internal successors, (161), 14 states have internal predecessors, (161), 0 states have call successors, (0), 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 17:45:44,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:45:45,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:45:46,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:45:48,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:45:51,108 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:45:53,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:46:10,413 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:46:23,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:46:25,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:46:30,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15