./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b84718ab53315b4fb0ea63ba4ff58d4e41800b214902f4639c5f6698ca2778b0 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 04:33:40,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 04:33:40,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 04:33:40,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 04:33:40,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 04:33:40,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 04:33:40,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 04:33:40,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 04:33:40,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 04:33:40,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 04:33:40,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 04:33:40,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 04:33:40,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 04:33:40,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 04:33:40,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 04:33:40,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 04:33:40,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 04:33:40,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 04:33:40,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 04:33:40,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 04:33:40,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 04:33:40,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 04:33:40,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 04:33:40,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 04:33:40,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 04:33:40,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 04:33:40,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 04:33:40,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 04:33:40,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 04:33:40,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 04:33:40,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 04:33:40,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 04:33:40,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 04:33:40,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 04:33:40,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 04:33:40,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 04:33:40,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 04:33:40,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 04:33:40,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 04:33:40,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 04:33:40,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 04:33:40,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 04:33:40,684 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 04:33:40,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 04:33:40,685 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 04:33:40,685 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 04:33:40,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 04:33:40,686 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 04:33:40,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 04:33:40,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 04:33:40,687 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 04:33:40,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 04:33:40,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 04:33:40,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 04:33:40,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 04:33:40,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 04:33:40,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 04:33:40,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 04:33:40,689 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 04:33:40,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 04:33:40,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 04:33:40,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 04:33:40,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 04:33:40,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 04:33:40,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 04:33:40,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 04:33:40,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 04:33:40,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 04:33:40,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 04:33:40,691 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 04:33:40,691 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 04:33:40,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 04:33:40,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 04:33:40,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b84718ab53315b4fb0ea63ba4ff58d4e41800b214902f4639c5f6698ca2778b0 [2021-12-18 04:33:40,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 04:33:40,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 04:33:40,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 04:33:40,936 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 04:33:40,937 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 04:33:40,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-12-18 04:33:40,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85154e7b5/a146c24262a54413902703b52303385d/FLAG2cd7190b3 [2021-12-18 04:33:41,546 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 04:33:41,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-12-18 04:33:41,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85154e7b5/a146c24262a54413902703b52303385d/FLAG2cd7190b3 [2021-12-18 04:33:42,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85154e7b5/a146c24262a54413902703b52303385d [2021-12-18 04:33:42,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 04:33:42,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 04:33:42,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 04:33:42,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 04:33:42,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 04:33:42,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:33:42" (1/1) ... [2021-12-18 04:33:42,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53bd9357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:42, skipping insertion in model container [2021-12-18 04:33:42,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:33:42" (1/1) ... [2021-12-18 04:33:42,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 04:33:42,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 04:33:42,337 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1724] [2021-12-18 04:33:42,338 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1725-1726] [2021-12-18 04:33:42,459 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i[57371,57384] [2021-12-18 04:33:43,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 04:33:43,039 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 04:33:43,084 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1724] [2021-12-18 04:33:43,085 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1725-1726] [2021-12-18 04:33:43,089 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i[57371,57384] [2021-12-18 04:33:43,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 04:33:43,330 INFO L208 MainTranslator]: Completed translation [2021-12-18 04:33:43,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:43 WrapperNode [2021-12-18 04:33:43,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 04:33:43,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 04:33:43,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 04:33:43,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 04:33:43,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:43" (1/1) ... [2021-12-18 04:33:43,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:43" (1/1) ... [2021-12-18 04:33:43,496 INFO L137 Inliner]: procedures = 276, calls = 1927, calls flagged for inlining = 125, calls inlined = 123, statements flattened = 4524 [2021-12-18 04:33:43,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 04:33:43,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 04:33:43,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 04:33:43,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 04:33:43,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:43" (1/1) ... [2021-12-18 04:33:43,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:43" (1/1) ... [2021-12-18 04:33:43,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:43" (1/1) ... [2021-12-18 04:33:43,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:43" (1/1) ... [2021-12-18 04:33:43,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:43" (1/1) ... [2021-12-18 04:33:43,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:43" (1/1) ... [2021-12-18 04:33:43,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:43" (1/1) ... [2021-12-18 04:33:43,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 04:33:43,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 04:33:43,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 04:33:43,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 04:33:43,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:43" (1/1) ... [2021-12-18 04:33:43,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 04:33:43,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:33:43,725 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) [2021-12-18 04:33:43,743 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 [2021-12-18 04:33:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_clear_stall [2021-12-18 04:33:43,760 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_clear_stall [2021-12-18 04:33:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_bit_clr [2021-12-18 04:33:43,760 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_bit_clr [2021-12-18 04:33:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_clear_ep_status [2021-12-18 04:33:43,760 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_clear_ep_status [2021-12-18 04:33:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 04:33:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 04:33:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_init_setup_buff [2021-12-18 04:33:43,761 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_init_setup_buff [2021-12-18 04:33:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_bit_set [2021-12-18 04:33:43,762 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_bit_set [2021-12-18 04:33:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 04:33:43,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 04:33:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2021-12-18 04:33:43,762 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2021-12-18 04:33:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-12-18 04:33:43,762 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-12-18 04:33:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-18 04:33:43,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-18 04:33:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 04:33:43,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 04:33:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-18 04:33:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-18 04:33:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_shutdown [2021-12-18 04:33:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_shutdown [2021-12-18 04:33:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_clear_dma [2021-12-18 04:33:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_clear_dma [2021-12-18 04:33:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_csr_busy [2021-12-18 04:33:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_csr_busy [2021-12-18 04:33:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-18 04:33:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-18 04:33:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_stop [2021-12-18 04:33:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_stop [2021-12-18 04:33:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-12-18 04:33:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-12-18 04:33:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_writel [2021-12-18 04:33:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_writel [2021-12-18 04:33:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 04:33:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 04:33:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-18 04:33:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-18 04:33:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_svc_data_out [2021-12-18 04:33:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_svc_data_out [2021-12-18 04:33:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_free_dma_chain [2021-12-18 04:33:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_free_dma_chain [2021-12-18 04:33:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 04:33:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 04:33:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2021-12-18 04:33:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2021-12-18 04:33:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_readl [2021-12-18 04:33:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_readl [2021-12-18 04:33:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 04:33:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 04:33:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-12-18 04:33:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-12-18 04:33:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_read_ep_control [2021-12-18 04:33:43,770 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_read_ep_control [2021-12-18 04:33:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-12-18 04:33:43,770 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-12-18 04:33:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_rrdy [2021-12-18 04:33:43,770 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_rrdy [2021-12-18 04:33:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_reconnect [2021-12-18 04:33:43,770 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_reconnect [2021-12-18 04:33:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 04:33:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_readl [2021-12-18 04:33:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_readl [2021-12-18 04:33:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-18 04:33:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-18 04:33:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_postsvc_epinters [2021-12-18 04:33:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_postsvc_epinters [2021-12-18 04:33:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2021-12-18 04:33:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2021-12-18 04:33:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 04:33:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-18 04:33:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-18 04:33:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2021-12-18 04:33:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2021-12-18 04:33:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_start_rxrequest [2021-12-18 04:33:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_start_rxrequest [2021-12-18 04:33:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-18 04:33:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-18 04:33:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-18 04:33:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-18 04:33:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 04:33:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 04:33:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-12-18 04:33:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-12-18 04:33:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2021-12-18 04:33:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2021-12-18 04:33:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 04:33:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_maxpkt [2021-12-18 04:33:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_maxpkt [2021-12-18 04:33:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 04:33:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-18 04:33:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-18 04:33:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_pcd_fifo_flush [2021-12-18 04:33:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_pcd_fifo_flush [2021-12-18 04:33:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_disable_ep_interrupts [2021-12-18 04:33:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_disable_ep_interrupts [2021-12-18 04:33:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_set_dma [2021-12-18 04:33:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_set_dma [2021-12-18 04:33:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure pch_vbus_gpio_get_value [2021-12-18 04:33:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_vbus_gpio_get_value [2021-12-18 04:33:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-18 04:33:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-18 04:33:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-18 04:33:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-18 04:33:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_wait_ep_stall [2021-12-18 04:33:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_wait_ep_stall [2021-12-18 04:33:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 04:33:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-18 04:33:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-18 04:33:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_write_ep_interrupts [2021-12-18 04:33:43,779 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_write_ep_interrupts [2021-12-18 04:33:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-18 04:33:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-18 04:33:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-18 04:33:43,781 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-18 04:33:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_fifo_flush [2021-12-18 04:33:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_fifo_flush [2021-12-18 04:33:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_clear_nak [2021-12-18 04:33:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_clear_nak [2021-12-18 04:33:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-18 04:33:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-18 04:33:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 04:33:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure complete_req [2021-12-18 04:33:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_req [2021-12-18 04:33:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_writel [2021-12-18 04:33:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_writel [2021-12-18 04:33:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure empty_req_queue [2021-12-18 04:33:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure empty_req_queue [2021-12-18 04:33:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 04:33:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-18 04:33:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-18 04:33:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_nak [2021-12-18 04:33:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_nak [2021-12-18 04:33:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2021-12-18 04:33:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2021-12-18 04:33:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_read_csr [2021-12-18 04:33:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_read_csr [2021-12-18 04:33:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 04:33:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 04:33:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_start [2021-12-18 04:33:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_start [2021-12-18 04:33:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-18 04:33:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-18 04:33:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_bit_set [2021-12-18 04:33:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_bit_set [2021-12-18 04:33:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_read_device_status [2021-12-18 04:33:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_read_device_status [2021-12-18 04:33:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 04:33:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 04:33:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-18 04:33:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-18 04:33:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_ddptr [2021-12-18 04:33:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_ddptr [2021-12-18 04:33:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 04:33:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-18 04:33:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-18 04:33:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-18 04:33:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-18 04:33:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 04:33:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 04:33:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_pcd_dequeue [2021-12-18 04:33:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_pcd_dequeue [2021-12-18 04:33:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_disable_interrupts [2021-12-18 04:33:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_disable_interrupts [2021-12-18 04:33:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_clear_ep_control [2021-12-18 04:33:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_clear_ep_control [2021-12-18 04:33:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_to_desc [2021-12-18 04:33:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_to_desc [2021-12-18 04:33:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_stall [2021-12-18 04:33:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_stall [2021-12-18 04:33:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 04:33:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_init [2021-12-18 04:33:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_init [2021-12-18 04:33:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-12-18 04:33:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-12-18 04:33:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_start_next_txrequest [2021-12-18 04:33:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_start_next_txrequest [2021-12-18 04:33:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 04:33:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-12-18 04:33:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-12-18 04:33:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_probe [2021-12-18 04:33:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_probe [2021-12-18 04:33:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-18 04:33:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-18 04:33:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 04:33:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-18 04:33:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-18 04:33:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 04:33:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 04:33:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_enable_ep_interrupts [2021-12-18 04:33:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_enable_ep_interrupts [2021-12-18 04:33:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-12-18 04:33:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-12-18 04:33:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_read_ep_status [2021-12-18 04:33:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_read_ep_status [2021-12-18 04:33:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_free_request [2021-12-18 04:33:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_free_request [2021-12-18 04:33:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_pcd_ep_enable [2021-12-18 04:33:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_pcd_ep_enable [2021-12-18 04:33:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_write_csr [2021-12-18 04:33:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_write_csr [2021-12-18 04:33:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-12-18 04:33:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-12-18 04:33:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_complete_transfer [2021-12-18 04:33:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_complete_transfer [2021-12-18 04:33:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_remove [2021-12-18 04:33:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_remove [2021-12-18 04:33:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-18 04:33:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-18 04:33:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure pch_vbus_gpio_work_fall [2021-12-18 04:33:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_vbus_gpio_work_fall [2021-12-18 04:33:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-12-18 04:33:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-12-18 04:33:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_set_maxpacket_limit [2021-12-18 04:33:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_set_maxpacket_limit [2021-12-18 04:33:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_bit_clr [2021-12-18 04:33:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_bit_clr [2021-12-18 04:33:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-18 04:33:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-18 04:33:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 04:33:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 04:33:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_set_disconnect [2021-12-18 04:33:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_set_disconnect [2021-12-18 04:33:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 04:33:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_bufsz [2021-12-18 04:33:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_bufsz [2021-12-18 04:33:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 04:33:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 04:33:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_enable_interrupts [2021-12-18 04:33:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_enable_interrupts [2021-12-18 04:33:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2021-12-18 04:33:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2021-12-18 04:33:44,398 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 04:33:44,402 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 04:33:44,652 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 04:33:48,830 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 04:33:48,841 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 04:33:48,841 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-18 04:33:48,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:33:48 BoogieIcfgContainer [2021-12-18 04:33:48,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 04:33:48,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 04:33:48,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 04:33:48,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 04:33:48,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 04:33:42" (1/3) ... [2021-12-18 04:33:48,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4371673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:33:48, skipping insertion in model container [2021-12-18 04:33:48,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:43" (2/3) ... [2021-12-18 04:33:48,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4371673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:33:48, skipping insertion in model container [2021-12-18 04:33:48,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:33:48" (3/3) ... [2021-12-18 04:33:48,848 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-12-18 04:33:48,853 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 04:33:48,853 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 04:33:48,884 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 04:33:48,888 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 [2021-12-18 04:33:48,888 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 04:33:48,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 1795 states, 1184 states have (on average 1.3597972972972974) internal successors, (1610), 1255 states have internal predecessors, (1610), 505 states have call successors, (505), 110 states have call predecessors, (505), 109 states have return successors, (496), 482 states have call predecessors, (496), 496 states have call successors, (496) [2021-12-18 04:33:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-18 04:33:48,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:33:48,931 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-12-18 04:33:48,931 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:33:48,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:33:48,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1740150991, now seen corresponding path program 1 times [2021-12-18 04:33:48,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:33:48,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556307435] [2021-12-18 04:33:48,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:33:48,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:33:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:33:49,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:33:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:33:49,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:33:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:33:49,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:33:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:33:49,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 04:33:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:33:49,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:33:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:33:49,353 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-18 04:33:49,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:33:49,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556307435] [2021-12-18 04:33:49,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556307435] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:33:49,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:33:49,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 04:33:49,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814833965] [2021-12-18 04:33:49,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:33:49,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:33:49,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:33:49,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:33:49,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 04:33:49,390 INFO L87 Difference]: Start difference. First operand has 1795 states, 1184 states have (on average 1.3597972972972974) internal successors, (1610), 1255 states have internal predecessors, (1610), 505 states have call successors, (505), 110 states have call predecessors, (505), 109 states have return successors, (496), 482 states have call predecessors, (496), 496 states have call successors, (496) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-18 04:33:52,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:33:54,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:34:00,344 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:34:02,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:34:04,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:34:04,133 INFO L93 Difference]: Finished difference Result 5435 states and 8077 transitions. [2021-12-18 04:34:04,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 04:34:04,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 48 [2021-12-18 04:34:04,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:34:04,178 INFO L225 Difference]: With dead ends: 5435 [2021-12-18 04:34:04,178 INFO L226 Difference]: Without dead ends: 3602 [2021-12-18 04:34:04,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-18 04:34:04,198 INFO L933 BasicCegarLoop]: 2693 mSDtfsCounter, 3985 mSDsluCounter, 3388 mSDsCounter, 0 mSdLazyCounter, 3332 mSolverCounterSat, 2912 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4297 SdHoareTripleChecker+Valid, 6081 SdHoareTripleChecker+Invalid, 6248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2912 IncrementalHoareTripleChecker+Valid, 3332 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2021-12-18 04:34:04,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4297 Valid, 6081 Invalid, 6248 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2912 Valid, 3332 Invalid, 4 Unknown, 0 Unchecked, 14.2s Time] [2021-12-18 04:34:04,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2021-12-18 04:34:04,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 3299. [2021-12-18 04:34:04,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 2160 states have (on average 1.3388888888888888) internal successors, (2892), 2267 states have internal predecessors, (2892), 922 states have call successors, (922), 217 states have call predecessors, (922), 216 states have return successors, (921), 893 states have call predecessors, (921), 921 states have call successors, (921) [2021-12-18 04:34:04,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 4735 transitions. [2021-12-18 04:34:04,408 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 4735 transitions. Word has length 48 [2021-12-18 04:34:04,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:34:04,409 INFO L470 AbstractCegarLoop]: Abstraction has 3299 states and 4735 transitions. [2021-12-18 04:34:04,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-18 04:34:04,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 4735 transitions. [2021-12-18 04:34:04,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-18 04:34:04,417 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:34:04,417 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-12-18 04:34:04,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 04:34:04,417 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:34:04,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:34:04,431 INFO L85 PathProgramCache]: Analyzing trace with hash -701291158, now seen corresponding path program 1 times [2021-12-18 04:34:04,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:34:04,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23598169] [2021-12-18 04:34:04,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:34:04,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:34:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:04,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:34:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:04,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:34:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:04,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:34:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:04,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 04:34:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:04,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:34:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:04,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-18 04:34:04,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:34:04,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23598169] [2021-12-18 04:34:04,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23598169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:34:04,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:34:04,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 04:34:04,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581174910] [2021-12-18 04:34:04,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:34:04,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:34:04,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:34:04,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:34:04,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 04:34:04,584 INFO L87 Difference]: Start difference. First operand 3299 states and 4735 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-18 04:34:10,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:34:12,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:34:15,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:34:17,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:34:17,130 INFO L93 Difference]: Finished difference Result 10340 states and 14993 transitions. [2021-12-18 04:34:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 04:34:17,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2021-12-18 04:34:17,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:34:17,169 INFO L225 Difference]: With dead ends: 10340 [2021-12-18 04:34:17,169 INFO L226 Difference]: Without dead ends: 7054 [2021-12-18 04:34:17,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-18 04:34:17,194 INFO L933 BasicCegarLoop]: 3192 mSDtfsCounter, 3981 mSDsluCounter, 3789 mSDsCounter, 0 mSdLazyCounter, 3607 mSolverCounterSat, 2731 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4326 SdHoareTripleChecker+Valid, 6981 SdHoareTripleChecker+Invalid, 6341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2731 IncrementalHoareTripleChecker+Valid, 3607 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-12-18 04:34:17,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4326 Valid, 6981 Invalid, 6341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2731 Valid, 3607 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2021-12-18 04:34:17,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7054 states. [2021-12-18 04:34:17,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7054 to 6451. [2021-12-18 04:34:17,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6451 states, 4218 states have (on average 1.3380749170222854) internal successors, (5644), 4433 states have internal predecessors, (5644), 1804 states have call successors, (1804), 429 states have call predecessors, (1804), 428 states have return successors, (1803), 1746 states have call predecessors, (1803), 1803 states have call successors, (1803) [2021-12-18 04:34:17,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6451 states to 6451 states and 9251 transitions. [2021-12-18 04:34:17,410 INFO L78 Accepts]: Start accepts. Automaton has 6451 states and 9251 transitions. Word has length 50 [2021-12-18 04:34:17,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:34:17,411 INFO L470 AbstractCegarLoop]: Abstraction has 6451 states and 9251 transitions. [2021-12-18 04:34:17,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-18 04:34:17,411 INFO L276 IsEmpty]: Start isEmpty. Operand 6451 states and 9251 transitions. [2021-12-18 04:34:17,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-18 04:34:17,417 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:34:17,418 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2021-12-18 04:34:17,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 04:34:17,418 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:34:17,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:34:17,419 INFO L85 PathProgramCache]: Analyzing trace with hash -782389508, now seen corresponding path program 1 times [2021-12-18 04:34:17,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:34:17,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675974191] [2021-12-18 04:34:17,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:34:17,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:34:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:17,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:34:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:17,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:34:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:17,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:34:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:17,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 04:34:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:17,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:34:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:17,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:34:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:17,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:34:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:17,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 04:34:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:17,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 04:34:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:17,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 04:34:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 04:34:17,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:34:17,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675974191] [2021-12-18 04:34:17,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675974191] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:34:17,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:34:17,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 04:34:17,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971916813] [2021-12-18 04:34:17,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:34:17,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:34:17,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:34:17,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:34:17,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 04:34:17,711 INFO L87 Difference]: Start difference. First operand 6451 states and 9251 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-18 04:34:23,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:34:25,287 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:34:26,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:34:26,633 INFO L93 Difference]: Finished difference Result 9787 states and 14056 transitions. [2021-12-18 04:34:26,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 04:34:26,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 93 [2021-12-18 04:34:26,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:34:26,684 INFO L225 Difference]: With dead ends: 9787 [2021-12-18 04:34:26,684 INFO L226 Difference]: Without dead ends: 9784 [2021-12-18 04:34:26,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-18 04:34:26,692 INFO L933 BasicCegarLoop]: 2439 mSDtfsCounter, 2898 mSDsluCounter, 3171 mSDsCounter, 0 mSdLazyCounter, 2763 mSolverCounterSat, 2151 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3044 SdHoareTripleChecker+Valid, 5610 SdHoareTripleChecker+Invalid, 4916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2151 IncrementalHoareTripleChecker+Valid, 2763 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-12-18 04:34:26,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3044 Valid, 5610 Invalid, 4916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2151 Valid, 2763 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2021-12-18 04:34:26,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9784 states. [2021-12-18 04:34:26,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9784 to 8985. [2021-12-18 04:34:26,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8985 states, 5964 states have (on average 1.3335010060362174) internal successors, (7953), 6216 states have internal predecessors, (7953), 2357 states have call successors, (2357), 658 states have call predecessors, (2357), 663 states have return successors, (2396), 2288 states have call predecessors, (2396), 2356 states have call successors, (2396) [2021-12-18 04:34:27,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8985 states to 8985 states and 12706 transitions. [2021-12-18 04:34:27,003 INFO L78 Accepts]: Start accepts. Automaton has 8985 states and 12706 transitions. Word has length 93 [2021-12-18 04:34:27,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:34:27,003 INFO L470 AbstractCegarLoop]: Abstraction has 8985 states and 12706 transitions. [2021-12-18 04:34:27,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-18 04:34:27,004 INFO L276 IsEmpty]: Start isEmpty. Operand 8985 states and 12706 transitions. [2021-12-18 04:34:27,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-18 04:34:27,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:34:27,016 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2021-12-18 04:34:27,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 04:34:27,016 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:34:27,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:34:27,017 INFO L85 PathProgramCache]: Analyzing trace with hash -321111901, now seen corresponding path program 1 times [2021-12-18 04:34:27,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:34:27,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861836607] [2021-12-18 04:34:27,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:34:27,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:34:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:27,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:34:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:27,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:34:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:27,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:34:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:27,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 04:34:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:27,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:34:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:27,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:34:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:27,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:34:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:27,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 04:34:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:27,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 04:34:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:27,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 04:34:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:27,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 04:34:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:27,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 04:34:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 04:34:27,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:34:27,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861836607] [2021-12-18 04:34:27,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861836607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:34:27,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:34:27,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 04:34:27,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15855024] [2021-12-18 04:34:27,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:34:27,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 04:34:27,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:34:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 04:34:27,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 04:34:27,232 INFO L87 Difference]: Start difference. First operand 8985 states and 12706 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 04:34:32,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:34:34,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:34:36,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:34:37,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:34:37,841 INFO L93 Difference]: Finished difference Result 18824 states and 26850 transitions. [2021-12-18 04:34:37,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 04:34:37,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2021-12-18 04:34:37,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:34:37,890 INFO L225 Difference]: With dead ends: 18824 [2021-12-18 04:34:37,890 INFO L226 Difference]: Without dead ends: 9852 [2021-12-18 04:34:37,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-18 04:34:37,927 INFO L933 BasicCegarLoop]: 2170 mSDtfsCounter, 2019 mSDsluCounter, 3491 mSDsCounter, 0 mSdLazyCounter, 3400 mSolverCounterSat, 2029 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2148 SdHoareTripleChecker+Valid, 5661 SdHoareTripleChecker+Invalid, 5432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2029 IncrementalHoareTripleChecker+Valid, 3400 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-12-18 04:34:37,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2148 Valid, 5661 Invalid, 5432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2029 Valid, 3400 Invalid, 3 Unknown, 0 Unchecked, 10.2s Time] [2021-12-18 04:34:37,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9852 states. [2021-12-18 04:34:38,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9852 to 8997. [2021-12-18 04:34:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8997 states, 5974 states have (on average 1.3329427519250083) internal successors, (7963), 6228 states have internal predecessors, (7963), 2357 states have call successors, (2357), 658 states have call predecessors, (2357), 665 states have return successors, (2400), 2288 states have call predecessors, (2400), 2356 states have call successors, (2400) [2021-12-18 04:34:38,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8997 states to 8997 states and 12720 transitions. [2021-12-18 04:34:38,299 INFO L78 Accepts]: Start accepts. Automaton has 8997 states and 12720 transitions. Word has length 113 [2021-12-18 04:34:38,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:34:38,300 INFO L470 AbstractCegarLoop]: Abstraction has 8997 states and 12720 transitions. [2021-12-18 04:34:38,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 04:34:38,300 INFO L276 IsEmpty]: Start isEmpty. Operand 8997 states and 12720 transitions. [2021-12-18 04:34:38,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-18 04:34:38,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:34:38,311 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2021-12-18 04:34:38,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 04:34:38,312 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:34:38,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:34:38,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1602116133, now seen corresponding path program 1 times [2021-12-18 04:34:38,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:34:38,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124383246] [2021-12-18 04:34:38,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:34:38,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:34:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:38,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:34:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:38,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:34:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:38,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:34:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:38,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 04:34:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:38,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:34:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:38,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:34:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:38,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:34:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:38,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 04:34:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:38,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 04:34:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:38,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 04:34:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:38,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 04:34:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:38,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 04:34:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 04:34:38,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:34:38,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124383246] [2021-12-18 04:34:38,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124383246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:34:38,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:34:38,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 04:34:38,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359638664] [2021-12-18 04:34:38,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:34:38,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 04:34:38,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:34:38,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 04:34:38,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 04:34:38,576 INFO L87 Difference]: Start difference. First operand 8997 states and 12720 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 04:34:43,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:34:45,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:34:48,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:34:49,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:34:49,483 INFO L93 Difference]: Finished difference Result 18840 states and 26868 transitions. [2021-12-18 04:34:49,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 04:34:49,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2021-12-18 04:34:49,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:34:49,531 INFO L225 Difference]: With dead ends: 18840 [2021-12-18 04:34:49,531 INFO L226 Difference]: Without dead ends: 9856 [2021-12-18 04:34:49,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-18 04:34:49,562 INFO L933 BasicCegarLoop]: 2169 mSDtfsCounter, 2019 mSDsluCounter, 3489 mSDsCounter, 0 mSdLazyCounter, 3406 mSolverCounterSat, 2029 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 5658 SdHoareTripleChecker+Invalid, 5438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2029 IncrementalHoareTripleChecker+Valid, 3406 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-12-18 04:34:49,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2145 Valid, 5658 Invalid, 5438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2029 Valid, 3406 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2021-12-18 04:34:49,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9856 states. [2021-12-18 04:34:49,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9856 to 9001. [2021-12-18 04:34:49,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9001 states, 5978 states have (on average 1.3327199732351958) internal successors, (7967), 6232 states have internal predecessors, (7967), 2357 states have call successors, (2357), 658 states have call predecessors, (2357), 665 states have return successors, (2400), 2288 states have call predecessors, (2400), 2356 states have call successors, (2400) [2021-12-18 04:34:49,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 12724 transitions. [2021-12-18 04:34:49,868 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 12724 transitions. Word has length 113 [2021-12-18 04:34:49,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:34:49,869 INFO L470 AbstractCegarLoop]: Abstraction has 9001 states and 12724 transitions. [2021-12-18 04:34:49,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 04:34:49,870 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 12724 transitions. [2021-12-18 04:34:49,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-18 04:34:49,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:34:49,880 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2021-12-18 04:34:49,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 04:34:49,880 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:34:49,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:34:49,881 INFO L85 PathProgramCache]: Analyzing trace with hash 13768231, now seen corresponding path program 1 times [2021-12-18 04:34:49,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:34:49,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624340855] [2021-12-18 04:34:49,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:34:49,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:34:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:49,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:34:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:49,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:34:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:49,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:34:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:50,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 04:34:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:50,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:34:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:50,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:34:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:50,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:34:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:50,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 04:34:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:50,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 04:34:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:50,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 04:34:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:50,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 04:34:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:50,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 04:34:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 04:34:50,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:34:50,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624340855] [2021-12-18 04:34:50,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624340855] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:34:50,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:34:50,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 04:34:50,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678242883] [2021-12-18 04:34:50,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:34:50,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 04:34:50,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:34:50,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 04:34:50,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 04:34:50,062 INFO L87 Difference]: Start difference. First operand 9001 states and 12724 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-18 04:34:55,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:34:57,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:34:59,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:35:01,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:35:01,024 INFO L93 Difference]: Finished difference Result 18846 states and 26872 transitions. [2021-12-18 04:35:01,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 04:35:01,025 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2021-12-18 04:35:01,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:35:01,098 INFO L225 Difference]: With dead ends: 18846 [2021-12-18 04:35:01,099 INFO L226 Difference]: Without dead ends: 9858 [2021-12-18 04:35:01,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-18 04:35:01,121 INFO L933 BasicCegarLoop]: 2170 mSDtfsCounter, 2019 mSDsluCounter, 3492 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 2028 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2146 SdHoareTripleChecker+Valid, 5662 SdHoareTripleChecker+Invalid, 5439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2028 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-12-18 04:35:01,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2146 Valid, 5662 Invalid, 5439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2028 Valid, 3408 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2021-12-18 04:35:01,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9858 states. [2021-12-18 04:35:01,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9858 to 9003. [2021-12-18 04:35:01,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9003 states, 5980 states have (on average 1.3326086956521739) internal successors, (7969), 6234 states have internal predecessors, (7969), 2357 states have call successors, (2357), 658 states have call predecessors, (2357), 665 states have return successors, (2400), 2288 states have call predecessors, (2400), 2356 states have call successors, (2400) [2021-12-18 04:35:01,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9003 states to 9003 states and 12726 transitions. [2021-12-18 04:35:01,400 INFO L78 Accepts]: Start accepts. Automaton has 9003 states and 12726 transitions. Word has length 113 [2021-12-18 04:35:01,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:35:01,400 INFO L470 AbstractCegarLoop]: Abstraction has 9003 states and 12726 transitions. [2021-12-18 04:35:01,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-18 04:35:01,401 INFO L276 IsEmpty]: Start isEmpty. Operand 9003 states and 12726 transitions. [2021-12-18 04:35:01,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-18 04:35:01,411 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:35:01,411 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2021-12-18 04:35:01,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 04:35:01,411 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:35:01,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:35:01,412 INFO L85 PathProgramCache]: Analyzing trace with hash -162924404, now seen corresponding path program 1 times [2021-12-18 04:35:01,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:35:01,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477687268] [2021-12-18 04:35:01,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:35:01,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:35:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:01,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:35:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:01,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:35:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:01,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:35:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:01,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 04:35:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:01,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:35:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:01,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:35:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:01,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:35:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:01,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 04:35:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:01,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 04:35:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:01,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 04:35:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:01,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 04:35:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:01,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 04:35:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-18 04:35:01,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:35:01,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477687268] [2021-12-18 04:35:01,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477687268] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:35:01,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367660837] [2021-12-18 04:35:01,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:35:01,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:35:01,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:35:01,708 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) [2021-12-18 04:35:01,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 04:35:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:02,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 2103 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 04:35:02,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:35:02,579 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-18 04:35:02,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:35:02,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367660837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:35:02,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:35:02,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2021-12-18 04:35:02,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033686206] [2021-12-18 04:35:02,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:35:02,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 04:35:02,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:35:02,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 04:35:02,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-18 04:35:02,582 INFO L87 Difference]: Start difference. First operand 9003 states and 12726 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 04:35:02,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:35:02,870 INFO L93 Difference]: Finished difference Result 18022 states and 25546 transitions. [2021-12-18 04:35:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 04:35:02,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2021-12-18 04:35:02,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:35:02,914 INFO L225 Difference]: With dead ends: 18022 [2021-12-18 04:35:02,915 INFO L226 Difference]: Without dead ends: 9011 [2021-12-18 04:35:02,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-18 04:35:02,952 INFO L933 BasicCegarLoop]: 2542 mSDtfsCounter, 2 mSDsluCounter, 5076 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7618 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 04:35:02,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 7618 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 04:35:02,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9011 states. [2021-12-18 04:35:03,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9011 to 9011. [2021-12-18 04:35:03,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9011 states, 5988 states have (on average 1.3321643286573146) internal successors, (7977), 6242 states have internal predecessors, (7977), 2357 states have call successors, (2357), 658 states have call predecessors, (2357), 665 states have return successors, (2400), 2288 states have call predecessors, (2400), 2356 states have call successors, (2400) [2021-12-18 04:35:03,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9011 states to 9011 states and 12734 transitions. [2021-12-18 04:35:03,298 INFO L78 Accepts]: Start accepts. Automaton has 9011 states and 12734 transitions. Word has length 115 [2021-12-18 04:35:03,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:35:03,298 INFO L470 AbstractCegarLoop]: Abstraction has 9011 states and 12734 transitions. [2021-12-18 04:35:03,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 04:35:03,299 INFO L276 IsEmpty]: Start isEmpty. Operand 9011 states and 12734 transitions. [2021-12-18 04:35:03,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-18 04:35:03,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:35:03,310 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 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] [2021-12-18 04:35:03,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 04:35:03,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:35:03,523 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:35:03,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:35:03,524 INFO L85 PathProgramCache]: Analyzing trace with hash -340257750, now seen corresponding path program 1 times [2021-12-18 04:35:03,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:35:03,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890051788] [2021-12-18 04:35:03,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:35:03,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:35:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:03,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:35:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:03,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:35:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:03,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:35:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:03,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 04:35:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:03,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:35:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:03,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:35:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:03,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 04:35:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:03,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 04:35:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:03,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 04:35:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:03,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 04:35:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:03,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-18 04:35:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:03,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 04:35:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-18 04:35:03,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:35:03,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890051788] [2021-12-18 04:35:03,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890051788] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:35:03,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820859460] [2021-12-18 04:35:03,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:35:03,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:35:03,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:35:03,754 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) [2021-12-18 04:35:03,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 04:35:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:04,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 2148 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-18 04:35:04,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:35:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-12-18 04:35:04,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 04:35:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-18 04:35:05,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820859460] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 04:35:05,043 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 04:35:05,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 13 [2021-12-18 04:35:05,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199873682] [2021-12-18 04:35:05,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 04:35:05,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 04:35:05,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:35:05,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 04:35:05,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-18 04:35:05,045 INFO L87 Difference]: Start difference. First operand 9011 states and 12734 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (29), 6 states have call predecessors, (29), 5 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-18 04:35:16,132 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:35:18,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:35:20,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:35:22,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:35:24,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:35:26,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:35:31,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:35:31,266 INFO L93 Difference]: Finished difference Result 27730 states and 39683 transitions. [2021-12-18 04:35:31,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-18 04:35:31,267 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (29), 6 states have call predecessors, (29), 5 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) Word has length 118 [2021-12-18 04:35:31,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:35:31,355 INFO L225 Difference]: With dead ends: 27730 [2021-12-18 04:35:31,355 INFO L226 Difference]: Without dead ends: 18732 [2021-12-18 04:35:31,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 257 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2021-12-18 04:35:31,394 INFO L933 BasicCegarLoop]: 3007 mSDtfsCounter, 5214 mSDsluCounter, 17049 mSDsCounter, 0 mSdLazyCounter, 13321 mSolverCounterSat, 4157 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5612 SdHoareTripleChecker+Valid, 20056 SdHoareTripleChecker+Invalid, 17484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4157 IncrementalHoareTripleChecker+Valid, 13321 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2021-12-18 04:35:31,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5612 Valid, 20056 Invalid, 17484 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4157 Valid, 13321 Invalid, 6 Unknown, 0 Unchecked, 25.2s Time] [2021-12-18 04:35:31,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18732 states. [2021-12-18 04:35:32,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18732 to 17088. [2021-12-18 04:35:32,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17088 states, 11344 states have (on average 1.3378878702397743) internal successors, (15177), 11856 states have internal predecessors, (15177), 4472 states have call successors, (4472), 1246 states have call predecessors, (4472), 1271 states have return successors, (4595), 4329 states have call predecessors, (4595), 4471 states have call successors, (4595) [2021-12-18 04:35:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17088 states to 17088 states and 24244 transitions. [2021-12-18 04:35:32,123 INFO L78 Accepts]: Start accepts. Automaton has 17088 states and 24244 transitions. Word has length 118 [2021-12-18 04:35:32,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:35:32,123 INFO L470 AbstractCegarLoop]: Abstraction has 17088 states and 24244 transitions. [2021-12-18 04:35:32,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (29), 6 states have call predecessors, (29), 5 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-18 04:35:32,124 INFO L276 IsEmpty]: Start isEmpty. Operand 17088 states and 24244 transitions. [2021-12-18 04:35:32,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-18 04:35:32,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:35:32,141 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 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] [2021-12-18 04:35:32,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 04:35:32,355 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,SelfDestructingSolverStorable7 [2021-12-18 04:35:32,355 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:35:32,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:35:32,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1041857624, now seen corresponding path program 1 times [2021-12-18 04:35:32,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:35:32,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653727900] [2021-12-18 04:35:32,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:35:32,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:35:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:32,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:35:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:32,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:35:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:32,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:35:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:32,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 04:35:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:32,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:35:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:32,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:35:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:32,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 04:35:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:32,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 04:35:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:32,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 04:35:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:32,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 04:35:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:32,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-18 04:35:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:32,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 04:35:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-12-18 04:35:32,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:35:32,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653727900] [2021-12-18 04:35:32,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653727900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:35:32,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:35:32,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 04:35:32,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080156526] [2021-12-18 04:35:32,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:35:32,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 04:35:32,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:35:32,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 04:35:32,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 04:35:32,619 INFO L87 Difference]: Start difference. First operand 17088 states and 24244 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 04:35:38,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:35:40,243 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:35:42,265 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:35:44,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:35:46,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:35:46,335 INFO L93 Difference]: Finished difference Result 35541 states and 50792 transitions. [2021-12-18 04:35:46,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 04:35:46,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2021-12-18 04:35:46,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:35:46,430 INFO L225 Difference]: With dead ends: 35541 [2021-12-18 04:35:46,430 INFO L226 Difference]: Without dead ends: 18471 [2021-12-18 04:35:46,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-12-18 04:35:46,496 INFO L933 BasicCegarLoop]: 2172 mSDtfsCounter, 2015 mSDsluCounter, 5057 mSDsCounter, 0 mSdLazyCounter, 4441 mSolverCounterSat, 2030 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2141 SdHoareTripleChecker+Valid, 7229 SdHoareTripleChecker+Invalid, 6475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2030 IncrementalHoareTripleChecker+Valid, 4441 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-12-18 04:35:46,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2141 Valid, 7229 Invalid, 6475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2030 Valid, 4441 Invalid, 4 Unknown, 0 Unchecked, 13.1s Time] [2021-12-18 04:35:46,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18471 states. [2021-12-18 04:35:47,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18471 to 16852. [2021-12-18 04:35:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16852 states, 11170 states have (on average 1.3361683079677709) internal successors, (14925), 11678 states have internal predecessors, (14925), 4416 states have call successors, (4416), 1240 states have call predecessors, (4416), 1265 states have return successors, (4539), 4273 states have call predecessors, (4539), 4415 states have call successors, (4539) [2021-12-18 04:35:47,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16852 states to 16852 states and 23880 transitions. [2021-12-18 04:35:47,107 INFO L78 Accepts]: Start accepts. Automaton has 16852 states and 23880 transitions. Word has length 118 [2021-12-18 04:35:47,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:35:47,108 INFO L470 AbstractCegarLoop]: Abstraction has 16852 states and 23880 transitions. [2021-12-18 04:35:47,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 04:35:47,108 INFO L276 IsEmpty]: Start isEmpty. Operand 16852 states and 23880 transitions. [2021-12-18 04:35:47,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-18 04:35:47,124 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:35:47,125 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 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] [2021-12-18 04:35:47,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 04:35:47,125 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:35:47,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:35:47,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2042703867, now seen corresponding path program 1 times [2021-12-18 04:35:47,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:35:47,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948715684] [2021-12-18 04:35:47,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:35:47,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:35:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:47,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:35:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:47,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:35:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:47,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:35:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:47,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 04:35:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:47,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:35:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:47,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:35:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:47,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 04:35:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:47,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 04:35:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:47,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 04:35:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:47,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:35:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:47,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 04:35:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:47,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 04:35:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:47,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 04:35:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-18 04:35:47,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:35:47,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948715684] [2021-12-18 04:35:47,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948715684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:35:47,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:35:47,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 04:35:47,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494490184] [2021-12-18 04:35:47,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:35:47,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 04:35:47,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:35:47,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 04:35:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-18 04:35:47,510 INFO L87 Difference]: Start difference. First operand 16852 states and 23880 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-18 04:35:55,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:35:57,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:35:59,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:36:01,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:36:03,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:36:06,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:36:08,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:36:10,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:36:12,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:36:14,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:36:16,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:36:20,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:36:20,551 INFO L93 Difference]: Finished difference Result 53530 states and 76600 transitions. [2021-12-18 04:36:20,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 04:36:20,552 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2021-12-18 04:36:20,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:36:20,712 INFO L225 Difference]: With dead ends: 53530 [2021-12-18 04:36:20,712 INFO L226 Difference]: Without dead ends: 36696 [2021-12-18 04:36:20,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-12-18 04:36:20,770 INFO L933 BasicCegarLoop]: 2440 mSDtfsCounter, 5683 mSDsluCounter, 8862 mSDsCounter, 0 mSdLazyCounter, 8777 mSolverCounterSat, 4677 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6060 SdHoareTripleChecker+Valid, 11302 SdHoareTripleChecker+Invalid, 13465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4677 IncrementalHoareTripleChecker+Valid, 8777 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time [2021-12-18 04:36:20,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6060 Valid, 11302 Invalid, 13465 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4677 Valid, 8777 Invalid, 11 Unknown, 0 Unchecked, 31.7s Time] [2021-12-18 04:36:20,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36696 states. [2021-12-18 04:36:21,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36696 to 33455. [2021-12-18 04:36:21,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33455 states, 22153 states have (on average 1.3352593328217397) internal successors, (29580), 23165 states have internal predecessors, (29580), 8775 states have call successors, (8775), 2475 states have call predecessors, (8775), 2526 states have return successors, (9022), 8490 states have call predecessors, (9022), 8774 states have call successors, (9022) [2021-12-18 04:36:22,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33455 states to 33455 states and 47377 transitions. [2021-12-18 04:36:22,054 INFO L78 Accepts]: Start accepts. Automaton has 33455 states and 47377 transitions. Word has length 125 [2021-12-18 04:36:22,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:36:22,055 INFO L470 AbstractCegarLoop]: Abstraction has 33455 states and 47377 transitions. [2021-12-18 04:36:22,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-18 04:36:22,055 INFO L276 IsEmpty]: Start isEmpty. Operand 33455 states and 47377 transitions. [2021-12-18 04:36:22,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-18 04:36:22,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:36:22,093 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:36:22,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 04:36:22,094 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:36:22,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:36:22,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2049967242, now seen corresponding path program 2 times [2021-12-18 04:36:22,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:36:22,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569080237] [2021-12-18 04:36:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:36:22,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:36:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:22,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:36:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:22,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:36:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:22,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:36:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:22,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 04:36:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:22,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:36:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:22,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:36:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:22,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 04:36:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:22,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 04:36:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:22,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 04:36:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:22,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:36:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:22,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 04:36:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:22,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:36:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:22,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 04:36:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:22,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 04:36:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:22,370 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-18 04:36:22,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:36:22,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569080237] [2021-12-18 04:36:22,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569080237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:36:22,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:36:22,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 04:36:22,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119781448] [2021-12-18 04:36:22,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:36:22,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 04:36:22,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:36:22,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 04:36:22,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-18 04:36:22,372 INFO L87 Difference]: Start difference. First operand 33455 states and 47377 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-18 04:36:36,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:36:38,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:36:40,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:36:43,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:36:45,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:36:47,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:36:49,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:36:51,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:36:53,124 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:37:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:37:00,256 INFO L93 Difference]: Finished difference Result 87900 states and 127896 transitions. [2021-12-18 04:37:00,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-18 04:37:00,257 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 132 [2021-12-18 04:37:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:37:00,804 INFO L225 Difference]: With dead ends: 87900 [2021-12-18 04:37:00,804 INFO L226 Difference]: Without dead ends: 54463 [2021-12-18 04:37:01,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2021-12-18 04:37:01,086 INFO L933 BasicCegarLoop]: 3635 mSDtfsCounter, 3857 mSDsluCounter, 16402 mSDsCounter, 0 mSdLazyCounter, 22467 mSolverCounterSat, 3168 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4096 SdHoareTripleChecker+Valid, 20037 SdHoareTripleChecker+Invalid, 25644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3168 IncrementalHoareTripleChecker+Valid, 22467 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.9s IncrementalHoareTripleChecker+Time [2021-12-18 04:37:01,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4096 Valid, 20037 Invalid, 25644 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3168 Valid, 22467 Invalid, 9 Unknown, 0 Unchecked, 35.9s Time] [2021-12-18 04:37:01,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54463 states. [2021-12-18 04:37:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54463 to 45164. [2021-12-18 04:37:02,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45164 states, 30170 states have (on average 1.347596950613192) internal successors, (40657), 31758 states have internal predecessors, (40657), 11452 states have call successors, (11452), 3434 states have call predecessors, (11452), 3541 states have return successors, (12289), 10899 states have call predecessors, (12289), 11451 states have call successors, (12289) [2021-12-18 04:37:02,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45164 states to 45164 states and 64398 transitions. [2021-12-18 04:37:02,985 INFO L78 Accepts]: Start accepts. Automaton has 45164 states and 64398 transitions. Word has length 132 [2021-12-18 04:37:02,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:37:02,985 INFO L470 AbstractCegarLoop]: Abstraction has 45164 states and 64398 transitions. [2021-12-18 04:37:02,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-18 04:37:02,986 INFO L276 IsEmpty]: Start isEmpty. Operand 45164 states and 64398 transitions. [2021-12-18 04:37:03,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-18 04:37:03,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:37:03,014 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:37:03,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 04:37:03,014 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:37:03,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:37:03,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1543935476, now seen corresponding path program 1 times [2021-12-18 04:37:03,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:37:03,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271736234] [2021-12-18 04:37:03,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:37:03,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:37:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:03,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:37:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:03,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:37:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:03,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:37:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:03,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 04:37:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:03,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:37:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:03,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:37:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:03,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 04:37:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:03,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 04:37:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:03,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 04:37:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:03,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:37:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:03,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 04:37:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:37:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:03,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 04:37:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:03,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 04:37:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:03,237 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-18 04:37:03,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:37:03,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271736234] [2021-12-18 04:37:03,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271736234] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:37:03,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:37:03,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 04:37:03,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698693353] [2021-12-18 04:37:03,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:37:03,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 04:37:03,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:37:03,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 04:37:03,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-18 04:37:03,239 INFO L87 Difference]: Start difference. First operand 45164 states and 64398 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-18 04:37:17,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:37:19,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:37:21,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:37:23,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:37:25,816 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:37:27,836 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:37:29,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:37:31,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:37:33,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:37:40,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:37:40,726 INFO L93 Difference]: Finished difference Result 99534 states and 144822 transitions. [2021-12-18 04:37:40,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-18 04:37:40,727 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 132 [2021-12-18 04:37:40,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:37:41,025 INFO L225 Difference]: With dead ends: 99534 [2021-12-18 04:37:41,025 INFO L226 Difference]: Without dead ends: 54388 [2021-12-18 04:37:41,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2021-12-18 04:37:41,192 INFO L933 BasicCegarLoop]: 3642 mSDtfsCounter, 3790 mSDsluCounter, 16379 mSDsCounter, 0 mSdLazyCounter, 22422 mSolverCounterSat, 3112 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4028 SdHoareTripleChecker+Valid, 20021 SdHoareTripleChecker+Invalid, 25543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3112 IncrementalHoareTripleChecker+Valid, 22422 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2021-12-18 04:37:41,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4028 Valid, 20021 Invalid, 25543 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3112 Valid, 22422 Invalid, 9 Unknown, 0 Unchecked, 35.2s Time] [2021-12-18 04:37:41,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54388 states. [2021-12-18 04:37:42,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54388 to 45095. [2021-12-18 04:37:42,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45095 states, 30125 states have (on average 1.3477842323651452) internal successors, (40602), 31707 states have internal predecessors, (40602), 11435 states have call successors, (11435), 3427 states have call predecessors, (11435), 3534 states have return successors, (12272), 10888 states have call predecessors, (12272), 11434 states have call successors, (12272) [2021-12-18 04:37:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45095 states to 45095 states and 64309 transitions. [2021-12-18 04:37:42,808 INFO L78 Accepts]: Start accepts. Automaton has 45095 states and 64309 transitions. Word has length 132 [2021-12-18 04:37:42,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:37:42,808 INFO L470 AbstractCegarLoop]: Abstraction has 45095 states and 64309 transitions. [2021-12-18 04:37:42,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-18 04:37:42,809 INFO L276 IsEmpty]: Start isEmpty. Operand 45095 states and 64309 transitions. [2021-12-18 04:37:42,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-18 04:37:42,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:37:42,844 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:37:42,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 04:37:42,845 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:37:42,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:37:42,845 INFO L85 PathProgramCache]: Analyzing trace with hash -2101393663, now seen corresponding path program 1 times [2021-12-18 04:37:42,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:37:42,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054878483] [2021-12-18 04:37:42,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:37:42,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:37:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:42,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:37:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:43,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:37:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:43,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:37:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:43,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 04:37:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:43,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:37:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:43,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:37:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:43,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 04:37:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:43,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 04:37:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:43,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 04:37:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:43,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:37:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:43,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 04:37:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:43,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:37:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 04:37:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:43,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 04:37:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:37:43,118 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-18 04:37:43,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:37:43,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054878483] [2021-12-18 04:37:43,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054878483] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:37:43,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:37:43,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-18 04:37:43,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915164253] [2021-12-18 04:37:43,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:37:43,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 04:37:43,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:37:43,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 04:37:43,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-12-18 04:37:43,120 INFO L87 Difference]: Start difference. First operand 45095 states and 64309 transitions. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 10 states have internal predecessors, (81), 4 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-18 04:38:00,143 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:38:02,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:38:04,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:38:06,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:38:08,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:38:10,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:38:12,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:38:14,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:38:16,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:38:18,387 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:38:20,408 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:38:29,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:38:29,166 INFO L93 Difference]: Finished difference Result 100837 states and 147243 transitions. [2021-12-18 04:38:29,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-18 04:38:29,167 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 10 states have internal predecessors, (81), 4 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 137 [2021-12-18 04:38:29,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:38:29,495 INFO L225 Difference]: With dead ends: 100837 [2021-12-18 04:38:29,495 INFO L226 Difference]: Without dead ends: 55760 [2021-12-18 04:38:29,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=959, Unknown=0, NotChecked=0, Total=1122 [2021-12-18 04:38:29,674 INFO L933 BasicCegarLoop]: 3937 mSDtfsCounter, 4690 mSDsluCounter, 22197 mSDsCounter, 0 mSdLazyCounter, 29850 mSolverCounterSat, 3483 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4925 SdHoareTripleChecker+Valid, 26134 SdHoareTripleChecker+Invalid, 33344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3483 IncrementalHoareTripleChecker+Valid, 29850 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.6s IncrementalHoareTripleChecker+Time [2021-12-18 04:38:29,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4925 Valid, 26134 Invalid, 33344 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3483 Valid, 29850 Invalid, 11 Unknown, 0 Unchecked, 43.6s Time] [2021-12-18 04:38:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55760 states. [2021-12-18 04:38:31,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55760 to 45099. [2021-12-18 04:38:31,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45099 states, 30129 states have (on average 1.3477380596767234) internal successors, (40606), 31711 states have internal predecessors, (40606), 11435 states have call successors, (11435), 3427 states have call predecessors, (11435), 3534 states have return successors, (12272), 10888 states have call predecessors, (12272), 11434 states have call successors, (12272) [2021-12-18 04:38:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45099 states to 45099 states and 64313 transitions. [2021-12-18 04:38:31,410 INFO L78 Accepts]: Start accepts. Automaton has 45099 states and 64313 transitions. Word has length 137 [2021-12-18 04:38:31,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:38:31,410 INFO L470 AbstractCegarLoop]: Abstraction has 45099 states and 64313 transitions. [2021-12-18 04:38:31,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 10 states have internal predecessors, (81), 4 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-18 04:38:31,411 INFO L276 IsEmpty]: Start isEmpty. Operand 45099 states and 64313 transitions. [2021-12-18 04:38:31,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-18 04:38:31,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:38:31,447 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:38:31,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 04:38:31,448 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:38:31,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:38:31,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1400329085, now seen corresponding path program 1 times [2021-12-18 04:38:31,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:38:31,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53080968] [2021-12-18 04:38:31,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:38:31,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:38:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:31,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:38:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:31,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:38:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:31,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:38:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:31,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 04:38:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:31,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:38:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:31,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:38:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:31,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 04:38:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:31,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 04:38:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:31,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 04:38:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:31,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:38:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:31,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 04:38:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:31,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:38:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:31,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 04:38:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:31,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 04:38:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-18 04:38:31,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:38:31,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53080968] [2021-12-18 04:38:31,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53080968] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:38:31,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574878869] [2021-12-18 04:38:31,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:38:31,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:38:31,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:38:31,709 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) [2021-12-18 04:38:31,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 04:38:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:32,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 2363 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 04:38:32,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:38:32,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-18 04:38:32,505 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-12-18 04:38:32,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:38:32,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574878869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:38:32,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:38:32,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-12-18 04:38:32,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861404057] [2021-12-18 04:38:32,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:38:32,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:38:32,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:38:32,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:38:32,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-18 04:38:32,506 INFO L87 Difference]: Start difference. First operand 45099 states and 64313 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-18 04:38:36,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:38:38,146 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:38:39,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:38:39,874 INFO L93 Difference]: Finished difference Result 90916 states and 129906 transitions. [2021-12-18 04:38:39,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 04:38:39,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 137 [2021-12-18 04:38:39,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:38:40,078 INFO L225 Difference]: With dead ends: 90916 [2021-12-18 04:38:40,078 INFO L226 Difference]: Without dead ends: 45835 [2021-12-18 04:38:40,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-18 04:38:40,235 INFO L933 BasicCegarLoop]: 2921 mSDtfsCounter, 296 mSDsluCounter, 7722 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 10643 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-18 04:38:40,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 10643 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 819 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2021-12-18 04:38:40,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45835 states. [2021-12-18 04:38:41,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45835 to 45089. [2021-12-18 04:38:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45089 states, 30121 states have (on average 1.347697619600943) internal successors, (40594), 31701 states have internal predecessors, (40594), 11433 states have call successors, (11433), 3427 states have call predecessors, (11433), 3534 states have return successors, (12270), 10888 states have call predecessors, (12270), 11432 states have call successors, (12270) [2021-12-18 04:38:42,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45089 states to 45089 states and 64297 transitions. [2021-12-18 04:38:42,198 INFO L78 Accepts]: Start accepts. Automaton has 45089 states and 64297 transitions. Word has length 137 [2021-12-18 04:38:42,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:38:42,199 INFO L470 AbstractCegarLoop]: Abstraction has 45089 states and 64297 transitions. [2021-12-18 04:38:42,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-18 04:38:42,199 INFO L276 IsEmpty]: Start isEmpty. Operand 45089 states and 64297 transitions. [2021-12-18 04:38:42,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-18 04:38:42,274 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:38:42,275 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:38:42,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 04:38:42,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:38:42,488 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:38:42,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:38:42,488 INFO L85 PathProgramCache]: Analyzing trace with hash -408457833, now seen corresponding path program 1 times [2021-12-18 04:38:42,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:38:42,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745654637] [2021-12-18 04:38:42,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:38:42,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:38:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:38:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:38:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:38:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 04:38:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:38:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:38:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:38:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 04:38:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 04:38:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:38:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 04:38:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:38:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:38:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:38:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 04:38:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:38:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-18 04:38:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 04:38:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 04:38:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 04:38:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-18 04:38:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:38:42,813 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-12-18 04:38:42,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:38:42,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745654637] [2021-12-18 04:38:42,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745654637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:38:42,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:38:42,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 04:38:42,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98507110] [2021-12-18 04:38:42,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:38:42,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 04:38:42,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:38:42,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 04:38:42,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 04:38:42,816 INFO L87 Difference]: Start difference. First operand 45089 states and 64297 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:38:50,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:38:52,166 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:38:55,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:38:59,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:38:59,982 INFO L93 Difference]: Finished difference Result 137564 states and 196800 transitions. [2021-12-18 04:38:59,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 04:38:59,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 174 [2021-12-18 04:38:59,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:39:00,591 INFO L225 Difference]: With dead ends: 137564 [2021-12-18 04:39:00,591 INFO L226 Difference]: Without dead ends: 92493 [2021-12-18 04:39:00,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-12-18 04:39:00,761 INFO L933 BasicCegarLoop]: 3151 mSDtfsCounter, 5574 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 5170 mSolverCounterSat, 5252 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5942 SdHoareTripleChecker+Valid, 7362 SdHoareTripleChecker+Invalid, 10425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5252 IncrementalHoareTripleChecker+Valid, 5170 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2021-12-18 04:39:00,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5942 Valid, 7362 Invalid, 10425 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5252 Valid, 5170 Invalid, 3 Unknown, 0 Unchecked, 13.7s Time] [2021-12-18 04:39:00,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92493 states. [2021-12-18 04:39:03,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92493 to 85668. [2021-12-18 04:39:03,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85668 states, 57110 states have (on average 1.3407109087725442) internal successors, (76568), 60074 states have internal predecessors, (76568), 21633 states have call successors, (21633), 6705 states have call predecessors, (21633), 6924 states have return successors, (23216), 20688 states have call predecessors, (23216), 21632 states have call successors, (23216) [2021-12-18 04:39:04,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85668 states to 85668 states and 121417 transitions. [2021-12-18 04:39:04,561 INFO L78 Accepts]: Start accepts. Automaton has 85668 states and 121417 transitions. Word has length 174 [2021-12-18 04:39:04,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:39:04,561 INFO L470 AbstractCegarLoop]: Abstraction has 85668 states and 121417 transitions. [2021-12-18 04:39:04,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:39:04,561 INFO L276 IsEmpty]: Start isEmpty. Operand 85668 states and 121417 transitions. [2021-12-18 04:39:04,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-18 04:39:04,668 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:39:04,668 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:39:04,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-18 04:39:04,668 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:39:04,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:39:04,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1158447683, now seen corresponding path program 2 times [2021-12-18 04:39:04,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:39:04,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953072280] [2021-12-18 04:39:04,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:39:04,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:39:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:04,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:39:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:04,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:39:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:04,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:39:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:04,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 04:39:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:39:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:04,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:39:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:04,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 04:39:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:04,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 04:39:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:04,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 04:39:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:05,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 04:39:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:05,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 04:39:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:05,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:39:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:05,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 04:39:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:05,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 04:39:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:05,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:39:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:05,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 04:39:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:05,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:39:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:05,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:39:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:05,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:39:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:05,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 04:39:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:05,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:39:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:39:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-18 04:39:05,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:39:05,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953072280] [2021-12-18 04:39:05,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953072280] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:39:05,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379880703] [2021-12-18 04:39:05,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 04:39:05,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:39:05,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:39:05,106 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) [2021-12-18 04:39:05,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 04:39:05,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 04:39:05,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 04:39:05,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-18 04:39:05,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:39:06,269 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-18 04:39:06,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 04:39:06,613 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-18 04:39:06,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379880703] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 04:39:06,613 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 04:39:06,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 14 [2021-12-18 04:39:06,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655438612] [2021-12-18 04:39:06,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 04:39:06,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 04:39:06,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:39:06,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 04:39:06,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-12-18 04:39:06,615 INFO L87 Difference]: Start difference. First operand 85668 states and 121417 transitions. Second operand has 14 states, 14 states have (on average 12.428571428571429) internal successors, (174), 8 states have internal predecessors, (174), 4 states have call successors, (53), 7 states have call predecessors, (53), 5 states have return successors, (39), 6 states have call predecessors, (39), 4 states have call successors, (39) [2021-12-18 04:39:19,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:39:21,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:39:23,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:39:25,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:39:27,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:39:29,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:39:31,196 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:39:33,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:39:37,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:39:39,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:39:41,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:39:43,526 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:39:45,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:39:47,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:39:49,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:39:51,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:39:53,663 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:40:06,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:40:06,367 INFO L93 Difference]: Finished difference Result 329356 states and 491824 transitions. [2021-12-18 04:40:06,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-18 04:40:06,368 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.428571428571429) internal successors, (174), 8 states have internal predecessors, (174), 4 states have call successors, (53), 7 states have call predecessors, (53), 5 states have return successors, (39), 6 states have call predecessors, (39), 4 states have call successors, (39) Word has length 174 [2021-12-18 04:40:06,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:40:08,482 INFO L225 Difference]: With dead ends: 329356 [2021-12-18 04:40:08,482 INFO L226 Difference]: Without dead ends: 243713 [2021-12-18 04:40:09,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 388 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-12-18 04:40:09,001 INFO L933 BasicCegarLoop]: 3049 mSDtfsCounter, 8295 mSDsluCounter, 19184 mSDsCounter, 0 mSdLazyCounter, 15694 mSolverCounterSat, 5759 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8943 SdHoareTripleChecker+Valid, 22233 SdHoareTripleChecker+Invalid, 21470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5759 IncrementalHoareTripleChecker+Valid, 15694 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.1s IncrementalHoareTripleChecker+Time [2021-12-18 04:40:09,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8943 Valid, 22233 Invalid, 21470 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5759 Valid, 15694 Invalid, 17 Unknown, 0 Unchecked, 50.1s Time] [2021-12-18 04:40:09,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243713 states. [2021-12-18 04:40:16,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243713 to 171044. [2021-12-18 04:40:17,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171044 states, 114034 states have (on average 1.3395653927775926) internal successors, (152756), 119962 states have internal predecessors, (152756), 43091 states have call successors, (43091), 13407 states have call predecessors, (43091), 13918 states have return successors, (46410), 41250 states have call predecessors, (46410), 43090 states have call successors, (46410) [2021-12-18 04:40:18,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171044 states to 171044 states and 242257 transitions. [2021-12-18 04:40:18,414 INFO L78 Accepts]: Start accepts. Automaton has 171044 states and 242257 transitions. Word has length 174 [2021-12-18 04:40:18,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:40:18,417 INFO L470 AbstractCegarLoop]: Abstraction has 171044 states and 242257 transitions. [2021-12-18 04:40:18,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.428571428571429) internal successors, (174), 8 states have internal predecessors, (174), 4 states have call successors, (53), 7 states have call predecessors, (53), 5 states have return successors, (39), 6 states have call predecessors, (39), 4 states have call successors, (39) [2021-12-18 04:40:18,417 INFO L276 IsEmpty]: Start isEmpty. Operand 171044 states and 242257 transitions. [2021-12-18 04:40:19,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-18 04:40:19,107 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:40:19,107 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:40:19,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 04:40:19,324 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,SelfDestructingSolverStorable15 [2021-12-18 04:40:19,325 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:40:19,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:40:19,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1614396658, now seen corresponding path program 1 times [2021-12-18 04:40:19,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:40:19,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337955841] [2021-12-18 04:40:19,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:40:19,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:40:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:40:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:40:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:40:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 04:40:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:40:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:40:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 04:40:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:40:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 04:40:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 04:40:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 04:40:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 04:40:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:40:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 04:40:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 04:40:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:40:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 04:40:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:40:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:40:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:40:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 04:40:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:40:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 04:40:19,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:40:19,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337955841] [2021-12-18 04:40:19,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337955841] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:40:19,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541267725] [2021-12-18 04:40:19,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:40:19,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:40:19,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:40:19,665 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) [2021-12-18 04:40:19,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 04:40:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:40:20,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 2460 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 04:40:20,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:40:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-18 04:40:20,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 04:40:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-12-18 04:40:20,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541267725] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 04:40:20,870 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 04:40:20,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 16 [2021-12-18 04:40:20,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362853616] [2021-12-18 04:40:20,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 04:40:20,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-18 04:40:20,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:40:20,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-18 04:40:20,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-12-18 04:40:20,874 INFO L87 Difference]: Start difference. First operand 171044 states and 242257 transitions. Second operand has 16 states, 16 states have (on average 13.4375) internal successors, (215), 11 states have internal predecessors, (215), 3 states have call successors, (58), 6 states have call predecessors, (58), 5 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) [2021-12-18 04:40:35,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:40:37,999 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:40:40,025 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:40:42,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:40:44,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:40:46,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:40:48,132 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:40:50,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:40:52,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:40:54,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:40:56,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:41:00,801 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:41:02,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:41:04,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:41:06,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:41:08,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:41:10,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:41:12,953 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:41:14,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:41:17,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:41:19,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:41:32,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:41:32,461 INFO L93 Difference]: Finished difference Result 401109 states and 581310 transitions. [2021-12-18 04:41:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-18 04:41:32,462 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.4375) internal successors, (215), 11 states have internal predecessors, (215), 3 states have call successors, (58), 6 states have call predecessors, (58), 5 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) Word has length 181 [2021-12-18 04:41:32,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:41:34,250 INFO L225 Difference]: With dead ends: 401109 [2021-12-18 04:41:34,250 INFO L226 Difference]: Without dead ends: 229788 [2021-12-18 04:41:35,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=348, Invalid=1632, Unknown=0, NotChecked=0, Total=1980 [2021-12-18 04:41:35,557 INFO L933 BasicCegarLoop]: 3916 mSDtfsCounter, 4679 mSDsluCounter, 27154 mSDsCounter, 0 mSdLazyCounter, 21232 mSolverCounterSat, 3226 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5177 SdHoareTripleChecker+Valid, 31070 SdHoareTripleChecker+Invalid, 24479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3226 IncrementalHoareTripleChecker+Valid, 21232 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.9s IncrementalHoareTripleChecker+Time [2021-12-18 04:41:35,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5177 Valid, 31070 Invalid, 24479 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3226 Valid, 21232 Invalid, 21 Unknown, 0 Unchecked, 59.9s Time] [2021-12-18 04:41:35,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229788 states.