./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 106df4f5c2a241158f9b42d6bacea5fef4152f7015c080096ac6f687357e10b4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:33:31,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:33:31,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:33:31,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:33:31,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:33:31,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:33:31,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:33:31,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:33:31,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:33:31,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:33:31,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:33:31,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:33:31,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:33:31,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:33:31,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:33:31,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:33:31,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:33:31,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:33:31,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:33:31,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:33:31,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:33:31,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:33:31,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:33:31,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:33:31,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:33:31,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:33:31,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:33:31,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:33:31,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:33:31,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:33:31,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:33:31,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:33:31,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:33:31,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:33:31,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:33:31,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:33:31,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:33:31,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:33:31,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:33:31,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:33:31,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:33:31,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:33:31,595 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:33:31,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:33:31,595 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:33:31,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:33:31,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:33:31,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:33:31,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:33:31,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:33:31,597 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:33:31,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:33:31,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:33:31,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:33:31,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:33:31,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:33:31,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:33:31,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:33:31,598 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:33:31,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:33:31,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:33:31,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:33:31,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:33:31,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:33:31,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:33:31,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:33:31,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:33:31,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:33:31,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:33:31,601 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:33:31,601 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:33:31,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:33:31,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:33:31,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 106df4f5c2a241158f9b42d6bacea5fef4152f7015c080096ac6f687357e10b4 [2021-12-22 14:33:31,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:33:31,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:33:31,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:33:31,807 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:33:31,808 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:33:31,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-12-22 14:33:31,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664261c47/c2e9cf189db14754b814cde5f5d985b8/FLAG9c23114b0 [2021-12-22 14:33:32,656 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:33:32,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-12-22 14:33:32,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664261c47/c2e9cf189db14754b814cde5f5d985b8/FLAG9c23114b0 [2021-12-22 14:33:32,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664261c47/c2e9cf189db14754b814cde5f5d985b8 [2021-12-22 14:33:32,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:33:32,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:33:32,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:33:32,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:33:32,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:33:32,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:33:32" (1/1) ... [2021-12-22 14:33:32,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674e84d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:32, skipping insertion in model container [2021-12-22 14:33:32,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:33:32" (1/1) ... [2021-12-22 14:33:32,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:33:32,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:33:34,084 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-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i[247200,247213] [2021-12-22 14:33:34,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:33:34,190 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:33:34,443 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-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i[247200,247213] [2021-12-22 14:33:34,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:33:34,492 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:33:34,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:34 WrapperNode [2021-12-22 14:33:34,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:33:34,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:33:34,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:33:34,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:33:34,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:34" (1/1) ... [2021-12-22 14:33:34,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:34" (1/1) ... [2021-12-22 14:33:34,645 INFO L137 Inliner]: procedures = 216, calls = 1408, calls flagged for inlining = 108, calls inlined = 97, statements flattened = 3072 [2021-12-22 14:33:34,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:33:34,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:33:34,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:33:34,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:33:34,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:34" (1/1) ... [2021-12-22 14:33:34,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:34" (1/1) ... [2021-12-22 14:33:34,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:34" (1/1) ... [2021-12-22 14:33:34,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:34" (1/1) ... [2021-12-22 14:33:34,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:34" (1/1) ... [2021-12-22 14:33:34,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:34" (1/1) ... [2021-12-22 14:33:34,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:34" (1/1) ... [2021-12-22 14:33:34,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:33:34,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:33:34,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:33:34,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:33:34,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:34" (1/1) ... [2021-12-22 14:33:34,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:33:34,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:33:34,873 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) [2021-12-22 14:33:34,913 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 [2021-12-22 14:33:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-22 14:33:34,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-22 14:33:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_free_iso_urbs [2021-12-22 14:33:34,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_free_iso_urbs [2021-12-22 14:33:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-22 14:33:34,941 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-22 14:33:34,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:33:34,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:33:34,941 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-22 14:33:34,941 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-22 14:33:34,944 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-22 14:33:34,944 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-22 14:33:34,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:33:34,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:33:34,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_iso_mutex_of_ttusb_dec [2021-12-22 14:33:34,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_iso_mutex_of_ttusb_dec [2021-12-22 14:33:34,945 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_iso_xfer [2021-12-22 14:33:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_iso_xfer [2021-12-22 14:33:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:33:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:33:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:33:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:33:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_usb_mutex_of_ttusb_dec [2021-12-22 14:33:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_usb_mutex_of_ttusb_dec [2021-12-22 14:33:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-22 14:33:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-22 14:33:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-22 14:33:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-22 14:33:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:33:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-22 14:33:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-22 14:33:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-22 14:33:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-22 14:33:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:33:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-22 14:33:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-22 14:33:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-22 14:33:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-22 14:33:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:33:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:33:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-22 14:33:34,949 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-22 14:33:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-22 14:33:34,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-22 14:33:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-22 14:33:34,949 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-22 14:33:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 14:33:34,950 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 14:33:34,950 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-22 14:33:34,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-22 14:33:34,950 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-22 14:33:34,950 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-22 14:33:34,950 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-22 14:33:34,951 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-22 14:33:34,951 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_model [2021-12-22 14:33:34,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_model [2021-12-22 14:33:34,952 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-12-22 14:33:34,952 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-12-22 14:33:34,952 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-22 14:33:34,953 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-22 14:33:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_stop_iso_xfer [2021-12-22 14:33:34,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_stop_iso_xfer [2021-12-22 14:33:34,954 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-22 14:33:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-22 14:33:34,954 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_filter_pes2ts_init [2021-12-22 14:33:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_filter_pes2ts_init [2021-12-22 14:33:34,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:33:34,954 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-22 14:33:34,955 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-22 14:33:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-22 14:33:34,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-22 14:33:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:33:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-12-22 14:33:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-12-22 14:33:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-22 14:33:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-22 14:33:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:33:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 14:33:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 14:33:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-22 14:33:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-22 14:33:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-22 14:33:34,957 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-22 14:33:34,957 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:33:34,957 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:33:34,957 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-22 14:33:34,957 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-22 14:33:34,957 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_send_command [2021-12-22 14:33:34,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_send_command [2021-12-22 14:33:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:33:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_setup_urbs [2021-12-22 14:33:34,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_setup_urbs [2021-12-22 14:33:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-12-22 14:33:34,958 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-12-22 14:33:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:33:34,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:33:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_pids [2021-12-22 14:33:34,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_pids [2021-12-22 14:33:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_usb [2021-12-22 14:33:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_usb [2021-12-22 14:33:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:33:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:33:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:33:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_iso_mutex_of_ttusb_dec [2021-12-22 14:33:34,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_iso_mutex_of_ttusb_dec [2021-12-22 14:33:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 14:33:34,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 14:33:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-22 14:33:34,961 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-22 14:33:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-22 14:33:34,961 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-22 14:33:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:33:34,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:33:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:33:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:33:34,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:33:35,406 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:33:35,408 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:33:39,668 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:33:39,683 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:33:39,684 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:33:39,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:33:39 BoogieIcfgContainer [2021-12-22 14:33:39,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:33:39,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:33:39,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:33:39,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:33:39,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:33:32" (1/3) ... [2021-12-22 14:33:39,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3d9de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:33:39, skipping insertion in model container [2021-12-22 14:33:39,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:34" (2/3) ... [2021-12-22 14:33:39,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3d9de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:33:39, skipping insertion in model container [2021-12-22 14:33:39,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:33:39" (3/3) ... [2021-12-22 14:33:39,698 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-12-22 14:33:39,702 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:33:39,702 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:33:39,745 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:33:39,752 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 [2021-12-22 14:33:39,752 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:33:39,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 952 states, 696 states have (on average 1.3261494252873562) internal successors, (923), 716 states have internal predecessors, (923), 204 states have call successors, (204), 50 states have call predecessors, (204), 50 states have return successors, (204), 198 states have call predecessors, (204), 204 states have call successors, (204) [2021-12-22 14:33:39,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 14:33:39,787 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:39,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:33:39,788 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:39,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:39,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1755858725, now seen corresponding path program 1 times [2021-12-22 14:33:39,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:39,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468906900] [2021-12-22 14:33:39,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:39,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:40,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:40,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:40,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468906900] [2021-12-22 14:33:40,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468906900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:40,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:40,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:33:40,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840645185] [2021-12-22 14:33:40,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:40,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:33:40,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:40,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:33:40,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:40,084 INFO L87 Difference]: Start difference. First operand has 952 states, 696 states have (on average 1.3261494252873562) internal successors, (923), 716 states have internal predecessors, (923), 204 states have call successors, (204), 50 states have call predecessors, (204), 50 states have return successors, (204), 198 states have call predecessors, (204), 204 states have call successors, (204) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:40,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:40,233 INFO L93 Difference]: Finished difference Result 2823 states and 4045 transitions. [2021-12-22 14:33:40,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:33:40,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-22 14:33:40,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:40,260 INFO L225 Difference]: With dead ends: 2823 [2021-12-22 14:33:40,261 INFO L226 Difference]: Without dead ends: 1868 [2021-12-22 14:33:40,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:40,276 INFO L933 BasicCegarLoop]: 1591 mSDtfsCounter, 1313 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 2879 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:40,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1313 Valid, 2879 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:33:40,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2021-12-22 14:33:40,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1863. [2021-12-22 14:33:40,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1368 states have (on average 1.3216374269005848) internal successors, (1808), 1399 states have internal predecessors, (1808), 397 states have call successors, (397), 99 states have call predecessors, (397), 97 states have return successors, (398), 374 states have call predecessors, (398), 386 states have call successors, (398) [2021-12-22 14:33:40,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 2603 transitions. [2021-12-22 14:33:40,470 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 2603 transitions. Word has length 9 [2021-12-22 14:33:40,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:40,471 INFO L470 AbstractCegarLoop]: Abstraction has 1863 states and 2603 transitions. [2021-12-22 14:33:40,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:40,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 2603 transitions. [2021-12-22 14:33:40,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-22 14:33:40,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:40,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:33:40,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:33:40,472 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:40,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:40,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1403360505, now seen corresponding path program 1 times [2021-12-22 14:33:40,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:40,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970558105] [2021-12-22 14:33:40,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:40,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:40,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:40,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970558105] [2021-12-22 14:33:40,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970558105] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:40,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:40,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:33:40,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105960367] [2021-12-22 14:33:40,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:40,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:33:40,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:40,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:33:40,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:40,585 INFO L87 Difference]: Start difference. First operand 1863 states and 2603 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:40,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:40,684 INFO L93 Difference]: Finished difference Result 1865 states and 2604 transitions. [2021-12-22 14:33:40,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:33:40,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-22 14:33:40,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:40,695 INFO L225 Difference]: With dead ends: 1865 [2021-12-22 14:33:40,695 INFO L226 Difference]: Without dead ends: 1862 [2021-12-22 14:33:40,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:40,700 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 1305 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:40,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 1311 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:33:40,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2021-12-22 14:33:40,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1862. [2021-12-22 14:33:40,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1368 states have (on average 1.320906432748538) internal successors, (1807), 1398 states have internal predecessors, (1807), 396 states have call successors, (396), 99 states have call predecessors, (396), 97 states have return successors, (398), 374 states have call predecessors, (398), 386 states have call successors, (398) [2021-12-22 14:33:40,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2601 transitions. [2021-12-22 14:33:40,760 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2601 transitions. Word has length 10 [2021-12-22 14:33:40,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:40,762 INFO L470 AbstractCegarLoop]: Abstraction has 1862 states and 2601 transitions. [2021-12-22 14:33:40,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:40,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2601 transitions. [2021-12-22 14:33:40,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 14:33:40,762 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:40,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:33:40,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:33:40,763 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:40,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:40,764 INFO L85 PathProgramCache]: Analyzing trace with hash -554903960, now seen corresponding path program 1 times [2021-12-22 14:33:40,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:40,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164057803] [2021-12-22 14:33:40,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:40,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:40,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:40,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:40,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164057803] [2021-12-22 14:33:40,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164057803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:40,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:40,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:33:40,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868152609] [2021-12-22 14:33:40,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:40,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:33:40,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:40,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:33:40,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:40,838 INFO L87 Difference]: Start difference. First operand 1862 states and 2601 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:40,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:40,885 INFO L93 Difference]: Finished difference Result 1864 states and 2602 transitions. [2021-12-22 14:33:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:33:40,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-22 14:33:40,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:40,894 INFO L225 Difference]: With dead ends: 1864 [2021-12-22 14:33:40,894 INFO L226 Difference]: Without dead ends: 1861 [2021-12-22 14:33:40,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:40,903 INFO L933 BasicCegarLoop]: 1309 mSDtfsCounter, 1302 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:40,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 1309 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:33:40,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2021-12-22 14:33:40,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1861. [2021-12-22 14:33:40,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1368 states have (on average 1.3201754385964912) internal successors, (1806), 1397 states have internal predecessors, (1806), 395 states have call successors, (395), 99 states have call predecessors, (395), 97 states have return successors, (398), 374 states have call predecessors, (398), 386 states have call successors, (398) [2021-12-22 14:33:40,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2599 transitions. [2021-12-22 14:33:40,961 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2599 transitions. Word has length 11 [2021-12-22 14:33:40,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:40,962 INFO L470 AbstractCegarLoop]: Abstraction has 1861 states and 2599 transitions. [2021-12-22 14:33:40,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:40,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2599 transitions. [2021-12-22 14:33:40,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-22 14:33:40,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:40,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:33:40,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:33:40,963 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:40,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:40,963 INFO L85 PathProgramCache]: Analyzing trace with hash -22549974, now seen corresponding path program 1 times [2021-12-22 14:33:40,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:40,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123913550] [2021-12-22 14:33:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:40,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:41,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:41,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123913550] [2021-12-22 14:33:41,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123913550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:41,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:41,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:33:41,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392653727] [2021-12-22 14:33:41,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:41,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:33:41,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:41,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:33:41,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:41,028 INFO L87 Difference]: Start difference. First operand 1861 states and 2599 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:41,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:41,189 INFO L93 Difference]: Finished difference Result 5538 states and 7845 transitions. [2021-12-22 14:33:41,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:33:41,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-22 14:33:41,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:41,206 INFO L225 Difference]: With dead ends: 5538 [2021-12-22 14:33:41,207 INFO L226 Difference]: Without dead ends: 3675 [2021-12-22 14:33:41,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:41,216 INFO L933 BasicCegarLoop]: 1609 mSDtfsCounter, 1307 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:41,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1307 Valid, 2898 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:33:41,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3675 states. [2021-12-22 14:33:41,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3675 to 3655. [2021-12-22 14:33:41,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 2697 states have (on average 1.32146829810901) internal successors, (3564), 2751 states have internal predecessors, (3564), 766 states have call successors, (766), 194 states have call predecessors, (766), 191 states have return successors, (830), 729 states have call predecessors, (830), 754 states have call successors, (830) [2021-12-22 14:33:41,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 5160 transitions. [2021-12-22 14:33:41,359 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 5160 transitions. Word has length 12 [2021-12-22 14:33:41,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:41,359 INFO L470 AbstractCegarLoop]: Abstraction has 3655 states and 5160 transitions. [2021-12-22 14:33:41,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:41,360 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 5160 transitions. [2021-12-22 14:33:41,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 14:33:41,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:41,366 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:33:41,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:33:41,367 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:41,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:41,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1548184114, now seen corresponding path program 1 times [2021-12-22 14:33:41,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:41,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830411176] [2021-12-22 14:33:41,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:41,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:33:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:33:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 14:33:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 14:33:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:33:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:33:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:33:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 14:33:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 14:33:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:33:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 14:33:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 14:33:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 14:33:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:41,671 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-22 14:33:41,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:41,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830411176] [2021-12-22 14:33:41,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830411176] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:41,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:41,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:33:41,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104955374] [2021-12-22 14:33:41,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:41,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:33:41,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:41,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:33:41,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:33:41,674 INFO L87 Difference]: Start difference. First operand 3655 states and 5160 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-22 14:33:43,836 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 [] [2021-12-22 14:33:45,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:45,161 INFO L93 Difference]: Finished difference Result 7439 states and 10705 transitions. [2021-12-22 14:33:45,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:33:45,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2021-12-22 14:33:45,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:45,180 INFO L225 Difference]: With dead ends: 7439 [2021-12-22 14:33:45,180 INFO L226 Difference]: Without dead ends: 3787 [2021-12-22 14:33:45,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:33:45,199 INFO L933 BasicCegarLoop]: 1182 mSDtfsCounter, 1360 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 377 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:45,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 1731 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 323 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2021-12-22 14:33:45,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2021-12-22 14:33:45,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3635. [2021-12-22 14:33:45,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 2677 states have (on average 1.2581247665296975) internal successors, (3368), 2731 states have internal predecessors, (3368), 766 states have call successors, (766), 194 states have call predecessors, (766), 191 states have return successors, (830), 729 states have call predecessors, (830), 754 states have call successors, (830) [2021-12-22 14:33:45,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 4964 transitions. [2021-12-22 14:33:45,331 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 4964 transitions. Word has length 134 [2021-12-22 14:33:45,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:45,331 INFO L470 AbstractCegarLoop]: Abstraction has 3635 states and 4964 transitions. [2021-12-22 14:33:45,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-22 14:33:45,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 4964 transitions. [2021-12-22 14:33:45,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 14:33:45,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:45,334 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:33:45,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:33:45,335 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:45,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:45,335 INFO L85 PathProgramCache]: Analyzing trace with hash 761767741, now seen corresponding path program 1 times [2021-12-22 14:33:45,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:45,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988748925] [2021-12-22 14:33:45,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:45,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:45,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 14:33:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:45,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:33:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:45,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:33:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:45,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 14:33:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:45,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:33:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:45,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:45,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:33:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:45,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:33:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:45,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:33:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:45,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 14:33:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:45,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:45,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 14:33:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 14:33:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:45,562 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-22 14:33:45,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:45,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988748925] [2021-12-22 14:33:45,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988748925] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:45,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:45,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:33:45,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998660694] [2021-12-22 14:33:45,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:45,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:33:45,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:45,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:33:45,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:33:45,564 INFO L87 Difference]: Start difference. First operand 3635 states and 4964 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-22 14:33:48,042 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 [] [2021-12-22 14:33:50,054 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 [] [2021-12-22 14:33:53,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:53,264 INFO L93 Difference]: Finished difference Result 7642 states and 10693 transitions. [2021-12-22 14:33:53,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:33:53,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2021-12-22 14:33:53,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:53,285 INFO L225 Difference]: With dead ends: 7642 [2021-12-22 14:33:53,285 INFO L226 Difference]: Without dead ends: 4010 [2021-12-22 14:33:53,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:33:53,299 INFO L933 BasicCegarLoop]: 1188 mSDtfsCounter, 894 mSDsluCounter, 2587 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 508 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 3775 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:53,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 3775 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 1275 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2021-12-22 14:33:53,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2021-12-22 14:33:53,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3675. [2021-12-22 14:33:53,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3675 states, 2717 states have (on average 1.2598454177401546) internal successors, (3423), 2771 states have internal predecessors, (3423), 766 states have call successors, (766), 194 states have call predecessors, (766), 191 states have return successors, (830), 729 states have call predecessors, (830), 754 states have call successors, (830) [2021-12-22 14:33:53,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 5019 transitions. [2021-12-22 14:33:53,437 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 5019 transitions. Word has length 134 [2021-12-22 14:33:53,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:53,438 INFO L470 AbstractCegarLoop]: Abstraction has 3675 states and 5019 transitions. [2021-12-22 14:33:53,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-22 14:33:53,439 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 5019 transitions. [2021-12-22 14:33:53,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 14:33:53,445 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:53,445 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:33:53,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:33:53,445 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:53,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:53,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1103091386, now seen corresponding path program 1 times [2021-12-22 14:33:53,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:53,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204415347] [2021-12-22 14:33:53,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:53,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:33:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:33:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 14:33:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 14:33:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:33:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:33:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:33:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 14:33:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 14:33:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:33:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 14:33:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 14:33:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 14:33:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-22 14:33:53,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:53,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204415347] [2021-12-22 14:33:53,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204415347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:53,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:53,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:33:53,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724641689] [2021-12-22 14:33:53,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:53,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:33:53,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:53,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:33:53,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:33:53,807 INFO L87 Difference]: Start difference. First operand 3675 states and 5019 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-22 14:33:55,950 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 [] [2021-12-22 14:33:57,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:57,093 INFO L93 Difference]: Finished difference Result 7319 states and 10011 transitions. [2021-12-22 14:33:57,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:33:57,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2021-12-22 14:33:57,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:57,110 INFO L225 Difference]: With dead ends: 7319 [2021-12-22 14:33:57,110 INFO L226 Difference]: Without dead ends: 3647 [2021-12-22 14:33:57,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:33:57,123 INFO L933 BasicCegarLoop]: 1160 mSDtfsCounter, 1274 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 326 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:57,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1396 Valid, 1694 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 242 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2021-12-22 14:33:57,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3647 states. [2021-12-22 14:33:57,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3647 to 3495. [2021-12-22 14:33:57,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 2569 states have (on average 1.253016738030362) internal successors, (3219), 2623 states have internal predecessors, (3219), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (794), 697 states have call predecessors, (794), 722 states have call successors, (794) [2021-12-22 14:33:57,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 4747 transitions. [2021-12-22 14:33:57,235 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 4747 transitions. Word has length 134 [2021-12-22 14:33:57,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:57,235 INFO L470 AbstractCegarLoop]: Abstraction has 3495 states and 4747 transitions. [2021-12-22 14:33:57,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-22 14:33:57,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 4747 transitions. [2021-12-22 14:33:57,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-22 14:33:57,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:57,239 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:33:57,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 14:33:57,239 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:57,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:57,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1886976464, now seen corresponding path program 1 times [2021-12-22 14:33:57,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:57,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928914631] [2021-12-22 14:33:57,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:57,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:33:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:33:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 14:33:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 14:33:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:33:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:33:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:33:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 14:33:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 14:33:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 14:33:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 14:33:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 14:33:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 14:33:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:57,637 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-22 14:33:57,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:57,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928914631] [2021-12-22 14:33:57,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928914631] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:57,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:57,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:33:57,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523967674] [2021-12-22 14:33:57,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:57,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:33:57,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:57,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:33:57,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:33:57,640 INFO L87 Difference]: Start difference. First operand 3495 states and 4747 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-22 14:33:59,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:34:03,720 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:34:04,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:34:04,302 INFO L93 Difference]: Finished difference Result 7151 states and 9762 transitions. [2021-12-22 14:34:04,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:34:04,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 151 [2021-12-22 14:34:04,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:34:04,321 INFO L225 Difference]: With dead ends: 7151 [2021-12-22 14:34:04,321 INFO L226 Difference]: Without dead ends: 3659 [2021-12-22 14:34:04,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:34:04,334 INFO L933 BasicCegarLoop]: 2194 mSDtfsCounter, 1327 mSDsluCounter, 1985 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 352 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 4179 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:34:04,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 4179 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 708 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2021-12-22 14:34:04,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2021-12-22 14:34:04,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3493. [2021-12-22 14:34:04,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3493 states, 2567 states have (on average 1.2516556291390728) internal successors, (3213), 2622 states have internal predecessors, (3213), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-22 14:34:04,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 4717 transitions. [2021-12-22 14:34:04,505 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 4717 transitions. Word has length 151 [2021-12-22 14:34:04,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:34:04,506 INFO L470 AbstractCegarLoop]: Abstraction has 3493 states and 4717 transitions. [2021-12-22 14:34:04,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-22 14:34:04,506 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 4717 transitions. [2021-12-22 14:34:04,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-22 14:34:04,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:34:04,508 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:34:04,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 14:34:04,509 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:34:04,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:34:04,509 INFO L85 PathProgramCache]: Analyzing trace with hash 413846126, now seen corresponding path program 1 times [2021-12-22 14:34:04,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:34:04,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046229973] [2021-12-22 14:34:04,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:34:04,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:34:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:34:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:34:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 14:34:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 14:34:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:34:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:34:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:34:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 14:34:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 14:34:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 14:34:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 14:34:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 14:34:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 14:34:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-22 14:34:04,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:34:04,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046229973] [2021-12-22 14:34:04,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046229973] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:34:04,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:34:04,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:34:04,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673223742] [2021-12-22 14:34:04,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:34:04,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:34:04,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:34:04,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:34:04,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:34:04,795 INFO L87 Difference]: Start difference. First operand 3493 states and 4717 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-22 14:34:07,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:34:11,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:34:11,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:34:11,884 INFO L93 Difference]: Finished difference Result 8753 states and 12077 transitions. [2021-12-22 14:34:11,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:34:11,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 151 [2021-12-22 14:34:11,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:34:11,904 INFO L225 Difference]: With dead ends: 8753 [2021-12-22 14:34:11,905 INFO L226 Difference]: Without dead ends: 5263 [2021-12-22 14:34:11,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:34:11,913 INFO L933 BasicCegarLoop]: 1501 mSDtfsCounter, 1181 mSDsluCounter, 4033 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 433 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 5534 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:34:11,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 5534 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 1070 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2021-12-22 14:34:11,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5263 states. [2021-12-22 14:34:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5263 to 3505. [2021-12-22 14:34:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 2579 states have (on average 1.250484683986041) internal successors, (3225), 2634 states have internal predecessors, (3225), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-22 14:34:12,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 4729 transitions. [2021-12-22 14:34:12,046 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 4729 transitions. Word has length 151 [2021-12-22 14:34:12,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:34:12,048 INFO L470 AbstractCegarLoop]: Abstraction has 3505 states and 4729 transitions. [2021-12-22 14:34:12,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-22 14:34:12,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 4729 transitions. [2021-12-22 14:34:12,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-22 14:34:12,050 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:34:12,050 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:34:12,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 14:34:12,050 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:34:12,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:34:12,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1898802128, now seen corresponding path program 1 times [2021-12-22 14:34:12,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:34:12,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715242411] [2021-12-22 14:34:12,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:34:12,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:34:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:34:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:34:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 14:34:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 14:34:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:34:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:34:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:34:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 14:34:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 14:34:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 14:34:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 14:34:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 14:34:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 14:34:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-22 14:34:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-22 14:34:12,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:34:12,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715242411] [2021-12-22 14:34:12,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715242411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:34:12,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:34:12,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:34:12,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659633298] [2021-12-22 14:34:12,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:34:12,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:34:12,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:34:12,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:34:12,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:34:12,284 INFO L87 Difference]: Start difference. First operand 3505 states and 4729 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 14:34:14,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:34:16,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:34:21,457 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:34:23,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:34:23,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:34:23,851 INFO L93 Difference]: Finished difference Result 8233 states and 11505 transitions. [2021-12-22 14:34:23,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:34:23,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2021-12-22 14:34:23,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:34:23,868 INFO L225 Difference]: With dead ends: 8233 [2021-12-22 14:34:23,868 INFO L226 Difference]: Without dead ends: 4731 [2021-12-22 14:34:23,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:34:23,877 INFO L933 BasicCegarLoop]: 1430 mSDtfsCounter, 753 mSDsluCounter, 2285 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 488 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 3715 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:34:23,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 3715 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 1076 Invalid, 4 Unknown, 0 Unchecked, 11.3s Time] [2021-12-22 14:34:23,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2021-12-22 14:34:23,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 3509. [2021-12-22 14:34:24,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 2583 states have (on average 1.2500967866821526) internal successors, (3229), 2638 states have internal predecessors, (3229), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-22 14:34:24,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 4733 transitions. [2021-12-22 14:34:24,010 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 4733 transitions. Word has length 160 [2021-12-22 14:34:24,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:34:24,011 INFO L470 AbstractCegarLoop]: Abstraction has 3509 states and 4733 transitions. [2021-12-22 14:34:24,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 14:34:24,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 4733 transitions. [2021-12-22 14:34:24,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-22 14:34:24,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:34:24,013 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:34:24,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 14:34:24,014 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:34:24,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:34:24,014 INFO L85 PathProgramCache]: Analyzing trace with hash -458669311, now seen corresponding path program 1 times [2021-12-22 14:34:24,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:34:24,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347326284] [2021-12-22 14:34:24,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:34:24,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:34:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:34:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:34:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 14:34:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 14:34:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:34:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:34:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:34:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 14:34:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 14:34:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 14:34:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 14:34:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 14:34:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 14:34:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-22 14:34:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-22 14:34:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,324 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-22 14:34:24,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:34:24,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347326284] [2021-12-22 14:34:24,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347326284] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:34:24,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457589472] [2021-12-22 14:34:24,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:34:24,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:34:24,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:34:24,326 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) [2021-12-22 14:34:24,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 14:34:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:24,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 2223 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 14:34:24,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:34:25,115 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-22 14:34:25,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:34:25,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457589472] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:34:25,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:34:25,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-22 14:34:25,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216952712] [2021-12-22 14:34:25,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:34:25,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:34:25,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:34:25,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:34:25,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:34:25,117 INFO L87 Difference]: Start difference. First operand 3509 states and 4733 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-22 14:34:25,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:34:25,502 INFO L93 Difference]: Finished difference Result 7031 states and 9503 transitions. [2021-12-22 14:34:25,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:34:25,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 173 [2021-12-22 14:34:25,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:34:25,519 INFO L225 Difference]: With dead ends: 7031 [2021-12-22 14:34:25,519 INFO L226 Difference]: Without dead ends: 3525 [2021-12-22 14:34:25,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:34:25,529 INFO L933 BasicCegarLoop]: 1191 mSDtfsCounter, 4 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:34:25,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2379 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 14:34:25,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2021-12-22 14:34:25,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 3513. [2021-12-22 14:34:25,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 2587 states have (on average 1.2497100889060688) internal successors, (3233), 2642 states have internal predecessors, (3233), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-22 14:34:25,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4737 transitions. [2021-12-22 14:34:25,653 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4737 transitions. Word has length 173 [2021-12-22 14:34:25,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:34:25,654 INFO L470 AbstractCegarLoop]: Abstraction has 3513 states and 4737 transitions. [2021-12-22 14:34:25,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-22 14:34:25,654 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4737 transitions. [2021-12-22 14:34:25,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-22 14:34:25,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:34:25,656 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:34:25,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 14:34:25,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-22 14:34:25,882 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:34:25,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:34:25,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1697928550, now seen corresponding path program 1 times [2021-12-22 14:34:25,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:34:25,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656005624] [2021-12-22 14:34:25,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:34:25,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:34:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:25,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:34:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:25,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:25,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 14:34:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:25,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 14:34:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:26,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 14:34:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:26,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-22 14:34:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:26,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:34:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:26,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:34:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:26,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:26,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:34:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:26,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:34:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:26,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:34:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:26,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 14:34:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:26,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:26,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-22 14:34:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:26,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-22 14:34:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-22 14:34:26,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:34:26,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656005624] [2021-12-22 14:34:26,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656005624] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:34:26,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860477880] [2021-12-22 14:34:26,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:34:26,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:34:26,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:34:26,192 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) [2021-12-22 14:34:26,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 14:34:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:26,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 14:34:26,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:34:26,937 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-22 14:34:26,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:34:26,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860477880] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:34:26,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:34:26,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-22 14:34:26,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382277343] [2021-12-22 14:34:26,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:34:26,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:34:26,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:34:26,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:34:26,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:34:26,938 INFO L87 Difference]: Start difference. First operand 3513 states and 4737 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 14:34:27,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:34:27,050 INFO L93 Difference]: Finished difference Result 7039 states and 9511 transitions. [2021-12-22 14:34:27,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:34:27,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 171 [2021-12-22 14:34:27,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:34:27,082 INFO L225 Difference]: With dead ends: 7039 [2021-12-22 14:34:27,082 INFO L226 Difference]: Without dead ends: 3529 [2021-12-22 14:34:27,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:34:27,109 INFO L933 BasicCegarLoop]: 1192 mSDtfsCounter, 2 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:34:27,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2380 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:34:27,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2021-12-22 14:34:27,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 3517. [2021-12-22 14:34:27,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3517 states, 2591 states have (on average 1.2493245851022772) internal successors, (3237), 2646 states have internal predecessors, (3237), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-22 14:34:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 4741 transitions. [2021-12-22 14:34:27,348 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 4741 transitions. Word has length 171 [2021-12-22 14:34:27,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:34:27,348 INFO L470 AbstractCegarLoop]: Abstraction has 3517 states and 4741 transitions. [2021-12-22 14:34:27,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 14:34:27,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 4741 transitions. [2021-12-22 14:34:27,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-22 14:34:27,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:34:27,350 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:34:27,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 14:34:27,563 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,SelfDestructingSolverStorable11 [2021-12-22 14:34:27,564 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:34:27,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:34:27,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1395907559, now seen corresponding path program 1 times [2021-12-22 14:34:27,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:34:27,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500126752] [2021-12-22 14:34:27,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:34:27,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:34:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:34:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 14:34:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 14:34:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 14:34:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-22 14:34:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:34:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-22 14:34:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 14:34:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 14:34:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 14:34:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 14:34:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 14:34:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-22 14:34:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-22 14:34:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:27,853 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-22 14:34:27,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:34:27,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500126752] [2021-12-22 14:34:27,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500126752] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:34:27,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615663297] [2021-12-22 14:34:27,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:34:27,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:34:27,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:34:27,856 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) [2021-12-22 14:34:27,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 14:34:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:28,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 2015 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 14:34:28,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:34:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 14:34:28,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:34:28,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615663297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:34:28,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:34:28,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2021-12-22 14:34:28,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47831300] [2021-12-22 14:34:28,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:34:28,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:34:28,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:34:28,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:34:28,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:34:28,685 INFO L87 Difference]: Start difference. First operand 3517 states and 4741 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-22 14:34:28,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:34:28,804 INFO L93 Difference]: Finished difference Result 7058 states and 9510 transitions. [2021-12-22 14:34:28,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:34:28,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 178 [2021-12-22 14:34:28,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:34:28,817 INFO L225 Difference]: With dead ends: 7058 [2021-12-22 14:34:28,817 INFO L226 Difference]: Without dead ends: 3540 [2021-12-22 14:34:28,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:34:28,826 INFO L933 BasicCegarLoop]: 1200 mSDtfsCounter, 17 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:34:28,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 3581 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:34:28,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3540 states. [2021-12-22 14:34:28,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3540 to 3529. [2021-12-22 14:34:28,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 2603 states have (on average 1.2477910103726468) internal successors, (3248), 2658 states have internal predecessors, (3248), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-22 14:34:28,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4752 transitions. [2021-12-22 14:34:28,942 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4752 transitions. Word has length 178 [2021-12-22 14:34:28,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:34:28,942 INFO L470 AbstractCegarLoop]: Abstraction has 3529 states and 4752 transitions. [2021-12-22 14:34:28,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-22 14:34:28,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4752 transitions. [2021-12-22 14:34:28,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-22 14:34:28,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:34:28,944 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:34:28,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-22 14:34:29,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:34:29,166 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:34:29,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:34:29,167 INFO L85 PathProgramCache]: Analyzing trace with hash 362521239, now seen corresponding path program 1 times [2021-12-22 14:34:29,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:34:29,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465765645] [2021-12-22 14:34:29,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:34:29,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:34:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:34:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:34:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 14:34:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 14:34:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:34:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:34:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:34:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 14:34:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 14:34:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 14:34:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 14:34:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 14:34:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-22 14:34:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-22 14:34:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-22 14:34:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-22 14:34:29,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:34:29,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465765645] [2021-12-22 14:34:29,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465765645] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:34:29,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687639328] [2021-12-22 14:34:29,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:34:29,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:34:29,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:34:29,634 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) [2021-12-22 14:34:29,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 14:34:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:30,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 2323 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 14:34:30,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:34:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-22 14:34:30,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:34:30,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687639328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:34:30,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:34:30,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-22 14:34:30,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219535211] [2021-12-22 14:34:30,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:34:30,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:34:30,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:34:30,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:34:30,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:34:30,413 INFO L87 Difference]: Start difference. First operand 3529 states and 4752 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-22 14:34:30,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:34:30,514 INFO L93 Difference]: Finished difference Result 7063 states and 9529 transitions. [2021-12-22 14:34:30,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:34:30,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 176 [2021-12-22 14:34:30,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:34:30,525 INFO L225 Difference]: With dead ends: 7063 [2021-12-22 14:34:30,526 INFO L226 Difference]: Without dead ends: 3537 [2021-12-22 14:34:30,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:34:30,533 INFO L933 BasicCegarLoop]: 1192 mSDtfsCounter, 1 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:34:30,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2381 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:34:30,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2021-12-22 14:34:30,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3533. [2021-12-22 14:34:30,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3533 states, 2607 states have (on average 1.2474108170310703) internal successors, (3252), 2662 states have internal predecessors, (3252), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-22 14:34:30,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4756 transitions. [2021-12-22 14:34:30,721 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4756 transitions. Word has length 176 [2021-12-22 14:34:30,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:34:30,721 INFO L470 AbstractCegarLoop]: Abstraction has 3533 states and 4756 transitions. [2021-12-22 14:34:30,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-22 14:34:30,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4756 transitions. [2021-12-22 14:34:30,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-22 14:34:30,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:34:30,724 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:34:30,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 14:34:30,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:34:30,938 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:34:30,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:34:30,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2077072147, now seen corresponding path program 1 times [2021-12-22 14:34:30,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:34:30,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724861540] [2021-12-22 14:34:30,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:34:30,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:34:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:34:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:34:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 14:34:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 14:34:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:34:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:34:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:34:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 14:34:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 14:34:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 14:34:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 14:34:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 14:34:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 14:34:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:34:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-22 14:34:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-22 14:34:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-22 14:34:31,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:34:31,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724861540] [2021-12-22 14:34:31,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724861540] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:34:31,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621132113] [2021-12-22 14:34:31,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:34:31,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:34:31,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:34:31,256 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) [2021-12-22 14:34:31,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 14:34:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:31,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 2350 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 14:34:31,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:34:32,127 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-22 14:34:32,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:34:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-22 14:34:32,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621132113] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:34:32,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 14:34:32,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2021-12-22 14:34:32,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006157603] [2021-12-22 14:34:32,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 14:34:32,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 14:34:32,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:34:32,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 14:34:32,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:34:32,383 INFO L87 Difference]: Start difference. First operand 3533 states and 4756 transitions. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 7 states have internal predecessors, (150), 5 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-12-22 14:34:36,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:34:38,706 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []