./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.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 2c6aa6e54aa03d80dc4005d195dc80cde5e772aed59b94df03248a4abb3fc0ec --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:37:48,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:37:48,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:37:48,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:37:48,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:37:48,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:37:48,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:37:48,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:37:48,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:37:48,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:37:48,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:37:48,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:37:48,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:37:48,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:37:48,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:37:48,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:37:48,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:37:48,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:37:48,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:37:48,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:37:48,855 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:37:48,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:37:48,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:37:48,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:37:48,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:37:48,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:37:48,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:37:48,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:37:48,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:37:48,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:37:48,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:37:48,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:37:48,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:37:48,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:37:48,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:37:48,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:37:48,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:37:48,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:37:48,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:37:48,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:37:48,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:37:48,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:37:48,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:37:48,889 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:37:48,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:37:48,890 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:37:48,890 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:37:48,891 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:37:48,891 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:37:48,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:37:48,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:37:48,891 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:37:48,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:37:48,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:37:48,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:37:48,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:37:48,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:37:48,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:37:48,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:37:48,893 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:37:48,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:37:48,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:37:48,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:37:48,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:37:48,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:37:48,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:37:48,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:37:48,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:37:48,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:37:48,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:37:48,895 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:37:48,896 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:37:48,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:37:48,896 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c6aa6e54aa03d80dc4005d195dc80cde5e772aed59b94df03248a4abb3fc0ec [2022-07-22 22:37:49,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:37:49,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:37:49,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:37:49,088 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:37:49,089 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:37:49,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2022-07-22 22:37:49,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61f84a1ad/899cbf9c6c504beab12279282d738608/FLAG98dc29ef1 [2022-07-22 22:37:49,731 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:37:49,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2022-07-22 22:37:49,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61f84a1ad/899cbf9c6c504beab12279282d738608/FLAG98dc29ef1 [2022-07-22 22:37:49,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61f84a1ad/899cbf9c6c504beab12279282d738608 [2022-07-22 22:37:49,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:37:49,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:37:49,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:37:49,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:37:49,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:37:49,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:37:49" (1/1) ... [2022-07-22 22:37:49,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14024ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:37:49, skipping insertion in model container [2022-07-22 22:37:49,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:37:49" (1/1) ... [2022-07-22 22:37:49,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:37:50,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:37:51,229 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i[284671,284684] [2022-07-22 22:37:51,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:37:51,316 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:37:51,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i[284671,284684] [2022-07-22 22:37:51,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:37:51,653 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:37:51,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:37:51 WrapperNode [2022-07-22 22:37:51,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:37:51,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:37:51,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:37:51,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:37:51,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:37:51" (1/1) ... [2022-07-22 22:37:51,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:37:51" (1/1) ... [2022-07-22 22:37:51,821 INFO L137 Inliner]: procedures = 177, calls = 1597, calls flagged for inlining = 87, calls inlined = 82, statements flattened = 3772 [2022-07-22 22:37:51,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:37:51,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:37:51,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:37:51,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:37:51,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:37:51" (1/1) ... [2022-07-22 22:37:51,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:37:51" (1/1) ... [2022-07-22 22:37:51,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:37:51" (1/1) ... [2022-07-22 22:37:51,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:37:51" (1/1) ... [2022-07-22 22:37:51,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:37:51" (1/1) ... [2022-07-22 22:37:51,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:37:51" (1/1) ... [2022-07-22 22:37:51,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:37:51" (1/1) ... [2022-07-22 22:37:51,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:37:51,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:37:51,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:37:51,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:37:52,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:37:51" (1/1) ... [2022-07-22 22:37:52,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:37:52,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:37:52,036 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) [2022-07-22 22:37:52,041 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 [2022-07-22 22:37:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-22 22:37:52,063 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-22 22:37:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-07-22 22:37:52,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-07-22 22:37:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-22 22:37:52,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-22 22:37:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_free_iso_urbs [2022-07-22 22:37:52,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_free_iso_urbs [2022-07-22 22:37:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-22 22:37:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-22 22:37:52,064 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-22 22:37:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2022-07-22 22:37:52,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2022-07-22 22:37:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-22 22:37:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 22:37:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-07-22 22:37:52,065 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-07-22 22:37:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:37:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init_dvb [2022-07-22 22:37:52,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init_dvb [2022-07-22 22:37:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-07-22 22:37:52,066 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-07-22 22:37:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-07-22 22:37:52,066 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-07-22 22:37:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-22 22:37:52,066 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-22 22:37:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-22 22:37:52,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-22 22:37:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 22:37:52,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 22:37:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-22 22:37:52,067 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-22 22:37:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2022-07-22 22:37:52,067 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2022-07-22 22:37:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 22:37:52,067 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 22:37:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_iso_xfer [2022-07-22 22:37:52,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_iso_xfer [2022-07-22 22:37:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-07-22 22:37:52,068 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-07-22 22:37:52,068 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_send_command [2022-07-22 22:37:52,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_send_command [2022-07-22 22:37:52,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:37:52,068 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 22:37:52,068 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 22:37:52,068 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_setup_urbs [2022-07-22 22:37:52,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_setup_urbs [2022-07-22 22:37:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-07-22 22:37:52,069 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-07-22 22:37:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2022-07-22 22:37:52,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2022-07-22 22:37:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_pids [2022-07-22 22:37:52,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_pids [2022-07-22 22:37:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit [2022-07-22 22:37:52,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit [2022-07-22 22:37:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_usb [2022-07-22 22:37:52,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_usb [2022-07-22 22:37:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2022-07-22 22:37:52,071 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2022-07-22 22:37:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:37:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-22 22:37:52,072 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-22 22:37:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init [2022-07-22 22:37:52,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init [2022-07-22 22:37:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:37:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:37:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:37:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-07-22 22:37:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-07-22 22:37:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-22 22:37:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-22 22:37:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 22:37:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 22:37:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:37:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-22 22:37:52,074 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-22 22:37:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-22 22:37:52,074 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-22 22:37:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-07-22 22:37:52,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-07-22 22:37:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:37:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:37:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_probe [2022-07-22 22:37:52,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_probe [2022-07-22 22:37:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-22 22:37:52,075 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-22 22:37:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2022-07-22 22:37:52,075 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2022-07-22 22:37:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-22 22:37:52,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-22 22:37:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-22 22:37:52,076 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-22 22:37:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-22 22:37:52,076 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-22 22:37:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-22 22:37:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-22 22:37:52,077 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_dvb [2022-07-22 22:37:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_dvb [2022-07-22 22:37:52,077 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-22 22:37:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-22 22:37:52,078 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 22:37:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 22:37:52,078 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_disconnect [2022-07-22 22:37:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_disconnect [2022-07-22 22:37:52,078 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-07-22 22:37:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-07-22 22:37:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2022-07-22 22:37:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2022-07-22 22:37:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_model [2022-07-22 22:37:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_model [2022-07-22 22:37:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-07-22 22:37:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-07-22 22:37:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:37:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-07-22 22:37:52,080 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-07-22 22:37:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_stop_iso_xfer [2022-07-22 22:37:52,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_stop_iso_xfer [2022-07-22 22:37:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-22 22:37:52,081 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-22 22:37:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_filter_pes2ts_init [2022-07-22 22:37:52,082 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_filter_pes2ts_init [2022-07-22 22:37:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-22 22:37:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:37:52,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:37:52,665 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:37:52,667 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:37:52,864 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 22:37:52,997 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2022-07-22 22:37:53,002 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2022-07-22 22:37:53,162 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 22:37:53,837 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##239: assume false; [2022-07-22 22:37:53,837 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##240: assume !false; [2022-07-22 22:37:54,009 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2022-07-22 22:37:54,019 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 22:37:54,020 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 22:37:56,373 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##78: assume !false; [2022-07-22 22:37:56,373 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume false; [2022-07-22 22:37:56,373 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !false; [2022-07-22 22:37:56,373 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume false; [2022-07-22 22:37:56,373 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L8653: ttusb_dec_start_feed_#res#1 := 0; [2022-07-22 22:37:56,677 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 22:37:57,121 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-07-22 22:37:57,121 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-07-22 22:37:57,144 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:37:57,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:37:57,153 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2022-07-22 22:37:57,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:37:57 BoogieIcfgContainer [2022-07-22 22:37:57,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:37:57,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:37:57,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:37:57,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:37:57,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:37:49" (1/3) ... [2022-07-22 22:37:57,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbac188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:37:57, skipping insertion in model container [2022-07-22 22:37:57,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:37:51" (2/3) ... [2022-07-22 22:37:57,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbac188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:37:57, skipping insertion in model container [2022-07-22 22:37:57,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:37:57" (3/3) ... [2022-07-22 22:37:57,160 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2022-07-22 22:37:57,169 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:37:57,169 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:37:57,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:37:57,217 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@22765f7a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@65989e75 [2022-07-22 22:37:57,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:37:57,223 INFO L276 IsEmpty]: Start isEmpty. Operand has 1017 states, 763 states have (on average 1.4233289646133682) internal successors, (1086), 787 states have internal predecessors, (1086), 199 states have call successors, (199), 54 states have call predecessors, (199), 53 states have return successors, (197), 191 states have call predecessors, (197), 197 states have call successors, (197) [2022-07-22 22:37:57,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-22 22:37:57,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:37:57,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:37:57,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:37:57,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:37:57,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1801714647, now seen corresponding path program 1 times [2022-07-22 22:37:57,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:37:57,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633154135] [2022-07-22 22:37:57,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:37:57,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:37:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:37:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:37:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:37:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:37:57,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:37:57,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633154135] [2022-07-22 22:37:57,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633154135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:37:57,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:37:57,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 22:37:57,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158020339] [2022-07-22 22:37:57,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:37:57,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 22:37:57,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:37:57,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 22:37:57,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:37:57,822 INFO L87 Difference]: Start difference. First operand has 1017 states, 763 states have (on average 1.4233289646133682) internal successors, (1086), 787 states have internal predecessors, (1086), 199 states have call successors, (199), 54 states have call predecessors, (199), 53 states have return successors, (197), 191 states have call predecessors, (197), 197 states have call successors, (197) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 22:37:58,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:37:58,002 INFO L93 Difference]: Finished difference Result 3011 states and 4514 transitions. [2022-07-22 22:37:58,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 22:37:58,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-22 22:37:58,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:37:58,022 INFO L225 Difference]: With dead ends: 3011 [2022-07-22 22:37:58,034 INFO L226 Difference]: Without dead ends: 1992 [2022-07-22 22:37:58,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:37:58,053 INFO L413 NwaCegarLoop]: 1995 mSDtfsCounter, 1373 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:37:58,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 3368 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:37:58,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2022-07-22 22:37:58,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1988. [2022-07-22 22:37:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1988 states, 1495 states have (on average 1.3036789297658864) internal successors, (1949), 1523 states have internal predecessors, (1949), 389 states have call successors, (389), 104 states have call predecessors, (389), 103 states have return successors, (399), 373 states have call predecessors, (399), 385 states have call successors, (399) [2022-07-22 22:37:58,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 2737 transitions. [2022-07-22 22:37:58,167 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 2737 transitions. Word has length 16 [2022-07-22 22:37:58,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:37:58,167 INFO L495 AbstractCegarLoop]: Abstraction has 1988 states and 2737 transitions. [2022-07-22 22:37:58,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 22:37:58,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 2737 transitions. [2022-07-22 22:37:58,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-22 22:37:58,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:37:58,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:37:58,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:37:58,169 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:37:58,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:37:58,169 INFO L85 PathProgramCache]: Analyzing trace with hash -18956933, now seen corresponding path program 1 times [2022-07-22 22:37:58,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:37:58,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174488992] [2022-07-22 22:37:58,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:37:58,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:37:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:37:58,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:37:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:37:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:37:58,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:37:58,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174488992] [2022-07-22 22:37:58,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174488992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:37:58,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:37:58,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 22:37:58,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253584990] [2022-07-22 22:37:58,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:37:58,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 22:37:58,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:37:58,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 22:37:58,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:37:58,320 INFO L87 Difference]: Start difference. First operand 1988 states and 2737 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 22:37:58,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:37:58,411 INFO L93 Difference]: Finished difference Result 5937 states and 8252 transitions. [2022-07-22 22:37:58,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 22:37:58,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-07-22 22:37:58,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:37:58,429 INFO L225 Difference]: With dead ends: 5937 [2022-07-22 22:37:58,430 INFO L226 Difference]: Without dead ends: 3953 [2022-07-22 22:37:58,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:37:58,440 INFO L413 NwaCegarLoop]: 1814 mSDtfsCounter, 1360 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 3180 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:37:58,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 3180 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:37:58,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2022-07-22 22:37:58,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 3946. [2022-07-22 22:37:58,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3946 states, 2969 states have (on average 1.3031323678006064) internal successors, (3869), 3020 states have internal predecessors, (3869), 772 states have call successors, (772), 205 states have call predecessors, (772), 204 states have return successors, (832), 744 states have call predecessors, (832), 768 states have call successors, (832) [2022-07-22 22:37:58,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 5473 transitions. [2022-07-22 22:37:58,610 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 5473 transitions. Word has length 17 [2022-07-22 22:37:58,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:37:58,611 INFO L495 AbstractCegarLoop]: Abstraction has 3946 states and 5473 transitions. [2022-07-22 22:37:58,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 22:37:58,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 5473 transitions. [2022-07-22 22:37:58,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-22 22:37:58,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:37:58,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:37:58,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 22:37:58,614 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:37:58,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:37:58,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1768602684, now seen corresponding path program 1 times [2022-07-22 22:37:58,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:37:58,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762802970] [2022-07-22 22:37:58,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:37:58,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:37:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:37:58,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:37:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:37:58,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 22:37:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:37:58,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 22:37:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:37:58,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:37:58,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:37:58,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762802970] [2022-07-22 22:37:58,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762802970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:37:58,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:37:58,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:37:58,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680593673] [2022-07-22 22:37:58,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:37:58,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:37:58,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:37:58,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:37:58,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:37:58,812 INFO L87 Difference]: Start difference. First operand 3946 states and 5473 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 22:38:01,122 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 [] [2022-07-22 22:38:04,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:38:04,191 INFO L93 Difference]: Finished difference Result 8818 states and 12470 transitions. [2022-07-22 22:38:04,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:38:04,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2022-07-22 22:38:04,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:38:04,213 INFO L225 Difference]: With dead ends: 8818 [2022-07-22 22:38:04,214 INFO L226 Difference]: Without dead ends: 4880 [2022-07-22 22:38:04,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:38:04,230 INFO L413 NwaCegarLoop]: 1476 mSDtfsCounter, 544 mSDsluCounter, 4052 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 243 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 5528 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:38:04,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 5528 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1573 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-07-22 22:38:04,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4880 states. [2022-07-22 22:38:04,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4880 to 4051. [2022-07-22 22:38:04,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4051 states, 3044 states have (on average 1.2992772667542707) internal successors, (3955), 3101 states have internal predecessors, (3955), 793 states have call successors, (793), 205 states have call predecessors, (793), 213 states have return successors, (892), 768 states have call predecessors, (892), 789 states have call successors, (892) [2022-07-22 22:38:04,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4051 states to 4051 states and 5640 transitions. [2022-07-22 22:38:04,343 INFO L78 Accepts]: Start accepts. Automaton has 4051 states and 5640 transitions. Word has length 60 [2022-07-22 22:38:04,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:38:04,344 INFO L495 AbstractCegarLoop]: Abstraction has 4051 states and 5640 transitions. [2022-07-22 22:38:04,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 22:38:04,344 INFO L276 IsEmpty]: Start isEmpty. Operand 4051 states and 5640 transitions. [2022-07-22 22:38:04,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-22 22:38:04,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:38:04,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:38:04,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 22:38:04,346 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:38:04,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:38:04,347 INFO L85 PathProgramCache]: Analyzing trace with hash -156930627, now seen corresponding path program 1 times [2022-07-22 22:38:04,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:38:04,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100480553] [2022-07-22 22:38:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:04,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:38:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:04,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:38:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:04,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 22:38:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:04,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 22:38:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:04,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:38:04,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:38:04,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100480553] [2022-07-22 22:38:04,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100480553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:38:04,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:38:04,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:38:04,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256989535] [2022-07-22 22:38:04,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:38:04,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:38:04,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:38:04,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:38:04,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:38:04,580 INFO L87 Difference]: Start difference. First operand 4051 states and 5640 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 22:38:06,896 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 [] [2022-07-22 22:38:08,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:38:08,709 INFO L93 Difference]: Finished difference Result 8955 states and 12692 transitions. [2022-07-22 22:38:08,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 22:38:08,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2022-07-22 22:38:08,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:38:08,733 INFO L225 Difference]: With dead ends: 8955 [2022-07-22 22:38:08,733 INFO L226 Difference]: Without dead ends: 4915 [2022-07-22 22:38:08,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:38:08,752 INFO L413 NwaCegarLoop]: 1476 mSDtfsCounter, 554 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 246 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:38:08,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 3238 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 730 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-07-22 22:38:08,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4915 states. [2022-07-22 22:38:08,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4915 to 4086. [2022-07-22 22:38:08,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4086 states, 3079 states have (on average 1.299447872685937) internal successors, (4001), 3136 states have internal predecessors, (4001), 793 states have call successors, (793), 205 states have call predecessors, (793), 213 states have return successors, (892), 768 states have call predecessors, (892), 789 states have call successors, (892) [2022-07-22 22:38:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4086 states to 4086 states and 5686 transitions. [2022-07-22 22:38:08,954 INFO L78 Accepts]: Start accepts. Automaton has 4086 states and 5686 transitions. Word has length 60 [2022-07-22 22:38:08,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:38:08,955 INFO L495 AbstractCegarLoop]: Abstraction has 4086 states and 5686 transitions. [2022-07-22 22:38:08,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 22:38:08,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4086 states and 5686 transitions. [2022-07-22 22:38:08,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 22:38:08,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:38:08,960 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 22:38:08,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 22:38:08,961 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:38:08,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:38:08,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1752503899, now seen corresponding path program 1 times [2022-07-22 22:38:08,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:38:08,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685966178] [2022-07-22 22:38:08,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:08,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:38:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:09,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:38:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:09,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:38:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:09,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:38:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:09,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:09,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:09,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:38:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:09,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:38:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 22:38:09,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:38:09,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685966178] [2022-07-22 22:38:09,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685966178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:38:09,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:38:09,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 22:38:09,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059812147] [2022-07-22 22:38:09,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:38:09,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:38:09,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:38:09,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:38:09,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:38:09,279 INFO L87 Difference]: Start difference. First operand 4086 states and 5686 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 22:38:12,172 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 [] [2022-07-22 22:38:20,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:38:20,646 INFO L93 Difference]: Finished difference Result 14421 states and 21784 transitions. [2022-07-22 22:38:20,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 22:38:20,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 94 [2022-07-22 22:38:20,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:38:20,728 INFO L225 Difference]: With dead ends: 14421 [2022-07-22 22:38:20,728 INFO L226 Difference]: Without dead ends: 10347 [2022-07-22 22:38:20,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:38:20,757 INFO L413 NwaCegarLoop]: 2098 mSDtfsCounter, 2793 mSDsluCounter, 4453 mSDsCounter, 0 mSdLazyCounter, 4853 mSolverCounterSat, 1178 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3006 SdHoareTripleChecker+Valid, 6551 SdHoareTripleChecker+Invalid, 6032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1178 IncrementalHoareTripleChecker+Valid, 4853 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:38:20,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3006 Valid, 6551 Invalid, 6032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1178 Valid, 4853 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-07-22 22:38:20,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10347 states. [2022-07-22 22:38:21,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10347 to 8345. [2022-07-22 22:38:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8345 states, 6262 states have (on average 1.2986266368572341) internal successors, (8132), 6459 states have internal predecessors, (8132), 1580 states have call successors, (1580), 393 states have call predecessors, (1580), 502 states have return successors, (2508), 1552 states have call predecessors, (2508), 1576 states have call successors, (2508) [2022-07-22 22:38:21,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8345 states to 8345 states and 12220 transitions. [2022-07-22 22:38:21,236 INFO L78 Accepts]: Start accepts. Automaton has 8345 states and 12220 transitions. Word has length 94 [2022-07-22 22:38:21,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:38:21,238 INFO L495 AbstractCegarLoop]: Abstraction has 8345 states and 12220 transitions. [2022-07-22 22:38:21,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 22:38:21,239 INFO L276 IsEmpty]: Start isEmpty. Operand 8345 states and 12220 transitions. [2022-07-22 22:38:21,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 22:38:21,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:38:21,241 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 22:38:21,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 22:38:21,241 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:38:21,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:38:21,242 INFO L85 PathProgramCache]: Analyzing trace with hash -865281053, now seen corresponding path program 1 times [2022-07-22 22:38:21,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:38:21,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094053557] [2022-07-22 22:38:21,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:21,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:38:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:21,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:38:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:21,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:38:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:21,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:38:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:21,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:21,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:21,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:38:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:21,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:38:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:21,525 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 22:38:21,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:38:21,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094053557] [2022-07-22 22:38:21,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094053557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:38:21,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:38:21,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 22:38:21,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512659238] [2022-07-22 22:38:21,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:38:21,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:38:21,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:38:21,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:38:21,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:38:21,528 INFO L87 Difference]: Start difference. First operand 8345 states and 12220 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 22:38:24,163 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 [] [2022-07-22 22:38:29,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:38:29,437 INFO L93 Difference]: Finished difference Result 19289 states and 29154 transitions. [2022-07-22 22:38:29,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 22:38:29,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 94 [2022-07-22 22:38:29,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:38:29,556 INFO L225 Difference]: With dead ends: 19289 [2022-07-22 22:38:29,556 INFO L226 Difference]: Without dead ends: 10956 [2022-07-22 22:38:29,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:38:29,611 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 2523 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 2516 mSolverCounterSat, 1269 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2609 SdHoareTripleChecker+Valid, 4446 SdHoareTripleChecker+Invalid, 3786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1269 IncrementalHoareTripleChecker+Valid, 2516 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:38:29,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2609 Valid, 4446 Invalid, 3786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1269 Valid, 2516 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-07-22 22:38:29,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10956 states. [2022-07-22 22:38:29,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10956 to 8724. [2022-07-22 22:38:30,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8724 states, 6534 states have (on average 1.2976737067646158) internal successors, (8479), 6741 states have internal predecessors, (8479), 1649 states have call successors, (1649), 419 states have call predecessors, (1649), 540 states have return successors, (2695), 1623 states have call predecessors, (2695), 1645 states have call successors, (2695) [2022-07-22 22:38:30,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8724 states to 8724 states and 12823 transitions. [2022-07-22 22:38:30,059 INFO L78 Accepts]: Start accepts. Automaton has 8724 states and 12823 transitions. Word has length 94 [2022-07-22 22:38:30,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:38:30,059 INFO L495 AbstractCegarLoop]: Abstraction has 8724 states and 12823 transitions. [2022-07-22 22:38:30,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 22:38:30,060 INFO L276 IsEmpty]: Start isEmpty. Operand 8724 states and 12823 transitions. [2022-07-22 22:38:30,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 22:38:30,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:38:30,061 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 22:38:30,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 22:38:30,062 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:38:30,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:38:30,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1105666320, now seen corresponding path program 1 times [2022-07-22 22:38:30,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:38:30,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847778049] [2022-07-22 22:38:30,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:30,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:38:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:30,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:38:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:30,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:38:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:30,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:38:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:30,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:30,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:30,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:38:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:30,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:38:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 22:38:30,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:38:30,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847778049] [2022-07-22 22:38:30,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847778049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:38:30,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:38:30,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:38:30,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561010081] [2022-07-22 22:38:30,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:38:30,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:38:30,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:38:30,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:38:30,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:38:30,362 INFO L87 Difference]: Start difference. First operand 8724 states and 12823 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 22:38:32,899 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 [] [2022-07-22 22:38:37,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:38:37,377 INFO L93 Difference]: Finished difference Result 19579 states and 30376 transitions. [2022-07-22 22:38:37,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:38:37,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 103 [2022-07-22 22:38:37,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:38:37,497 INFO L225 Difference]: With dead ends: 19579 [2022-07-22 22:38:37,498 INFO L226 Difference]: Without dead ends: 10867 [2022-07-22 22:38:37,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:38:37,541 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 625 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 291 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 3593 SdHoareTripleChecker+Invalid, 1862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:38:37,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 3593 Invalid, 1862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1570 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-07-22 22:38:37,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10867 states. [2022-07-22 22:38:37,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10867 to 8750. [2022-07-22 22:38:37,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8750 states, 6560 states have (on average 1.2964939024390243) internal successors, (8505), 6767 states have internal predecessors, (8505), 1649 states have call successors, (1649), 419 states have call predecessors, (1649), 540 states have return successors, (2695), 1623 states have call predecessors, (2695), 1645 states have call successors, (2695) [2022-07-22 22:38:38,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8750 states to 8750 states and 12849 transitions. [2022-07-22 22:38:38,017 INFO L78 Accepts]: Start accepts. Automaton has 8750 states and 12849 transitions. Word has length 103 [2022-07-22 22:38:38,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:38:38,018 INFO L495 AbstractCegarLoop]: Abstraction has 8750 states and 12849 transitions. [2022-07-22 22:38:38,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 22:38:38,018 INFO L276 IsEmpty]: Start isEmpty. Operand 8750 states and 12849 transitions. [2022-07-22 22:38:38,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 22:38:38,019 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:38:38,019 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 22:38:38,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 22:38:38,020 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:38:38,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:38:38,020 INFO L85 PathProgramCache]: Analyzing trace with hash 387197066, now seen corresponding path program 1 times [2022-07-22 22:38:38,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:38:38,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812964005] [2022-07-22 22:38:38,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:38,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:38:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:38,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:38:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:38,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:38:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:38,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:38:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:38,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:38,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:38,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:38:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:38,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:38:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:38,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:38:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 22:38:38,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:38:38,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812964005] [2022-07-22 22:38:38,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812964005] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:38:38,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372521172] [2022-07-22 22:38:38,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:38,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:38:38,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:38:38,284 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) [2022-07-22 22:38:38,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:38:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:39,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 2804 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 22:38:39,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:38:39,068 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 22:38:39,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:38:39,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372521172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:38:39,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:38:39,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-07-22 22:38:39,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818500833] [2022-07-22 22:38:39,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:38:39,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:38:39,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:38:39,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:38:39,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:38:39,070 INFO L87 Difference]: Start difference. First operand 8750 states and 12849 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 22:38:39,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:38:39,443 INFO L93 Difference]: Finished difference Result 17235 states and 25279 transitions. [2022-07-22 22:38:39,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:38:39,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 111 [2022-07-22 22:38:39,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:38:39,480 INFO L225 Difference]: With dead ends: 17235 [2022-07-22 22:38:39,480 INFO L226 Difference]: Without dead ends: 8486 [2022-07-22 22:38:39,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:38:39,518 INFO L413 NwaCegarLoop]: 1382 mSDtfsCounter, 13 mSDsluCounter, 4124 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 5506 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:38:39,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 5506 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:38:39,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8486 states. [2022-07-22 22:38:39,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8486 to 8438. [2022-07-22 22:38:39,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8438 states, 6314 states have (on average 1.2944250871080138) internal successors, (8173), 6514 states have internal predecessors, (8173), 1605 states have call successors, (1605), 398 states have call predecessors, (1605), 518 states have return successors, (2578), 1581 states have call predecessors, (2578), 1601 states have call successors, (2578) [2022-07-22 22:38:39,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8438 states to 8438 states and 12356 transitions. [2022-07-22 22:38:39,919 INFO L78 Accepts]: Start accepts. Automaton has 8438 states and 12356 transitions. Word has length 111 [2022-07-22 22:38:39,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:38:39,919 INFO L495 AbstractCegarLoop]: Abstraction has 8438 states and 12356 transitions. [2022-07-22 22:38:39,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 22:38:39,920 INFO L276 IsEmpty]: Start isEmpty. Operand 8438 states and 12356 transitions. [2022-07-22 22:38:39,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 22:38:39,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:38:39,921 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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] [2022-07-22 22:38:39,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 22:38:40,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:38:40,144 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:38:40,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:38:40,145 INFO L85 PathProgramCache]: Analyzing trace with hash 623950775, now seen corresponding path program 1 times [2022-07-22 22:38:40,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:38:40,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320080837] [2022-07-22 22:38:40,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:40,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:38:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:38:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:38:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:38:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:38:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 22:38:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:38:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:38:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 22:38:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:38:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:38:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:38:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:38:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:38:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:38:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 22:38:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 22:38:40,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:38:40,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320080837] [2022-07-22 22:38:40,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320080837] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:38:40,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085059487] [2022-07-22 22:38:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:40,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:38:40,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:38:40,716 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) [2022-07-22 22:38:40,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:38:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:41,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:38:41,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:38:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-22 22:38:41,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:38:41,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085059487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:38:41,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:38:41,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-07-22 22:38:41,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147445627] [2022-07-22 22:38:41,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:38:41,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:38:41,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:38:41,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:38:41,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:38:41,548 INFO L87 Difference]: Start difference. First operand 8438 states and 12356 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 22:38:41,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:38:41,777 INFO L93 Difference]: Finished difference Result 8490 states and 12408 transitions. [2022-07-22 22:38:41,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:38:41,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 124 [2022-07-22 22:38:41,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:38:41,808 INFO L225 Difference]: With dead ends: 8490 [2022-07-22 22:38:41,808 INFO L226 Difference]: Without dead ends: 8464 [2022-07-22 22:38:41,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:38:41,815 INFO L413 NwaCegarLoop]: 1371 mSDtfsCounter, 1368 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 4119 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:38:41,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 4119 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:38:41,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8464 states. [2022-07-22 22:38:42,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8464 to 8438. [2022-07-22 22:38:42,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8438 states, 6314 states have (on average 1.2939499524865379) internal successors, (8170), 6514 states have internal predecessors, (8170), 1605 states have call successors, (1605), 398 states have call predecessors, (1605), 518 states have return successors, (2578), 1581 states have call predecessors, (2578), 1601 states have call successors, (2578) [2022-07-22 22:38:42,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8438 states to 8438 states and 12353 transitions. [2022-07-22 22:38:42,195 INFO L78 Accepts]: Start accepts. Automaton has 8438 states and 12353 transitions. Word has length 124 [2022-07-22 22:38:42,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:38:42,196 INFO L495 AbstractCegarLoop]: Abstraction has 8438 states and 12353 transitions. [2022-07-22 22:38:42,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 22:38:42,196 INFO L276 IsEmpty]: Start isEmpty. Operand 8438 states and 12353 transitions. [2022-07-22 22:38:42,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 22:38:42,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:38:42,199 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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] [2022-07-22 22:38:42,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:38:42,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-22 22:38:42,422 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:38:42,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:38:42,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2082115524, now seen corresponding path program 1 times [2022-07-22 22:38:42,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:38:42,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521495577] [2022-07-22 22:38:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:42,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:38:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:38:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 22:38:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 22:38:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:38:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:38:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:38:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:38:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 22:38:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 22:38:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:38:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:38:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:38:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:38:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 22:38:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:38:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-22 22:38:42,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:38:42,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521495577] [2022-07-22 22:38:42,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521495577] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:38:42,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765076486] [2022-07-22 22:38:42,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:42,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:38:42,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:38:42,894 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) [2022-07-22 22:38:42,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:38:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:43,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 3014 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-22 22:38:43,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:38:43,785 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-22 22:38:43,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:38:43,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765076486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:38:43,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:38:43,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-22 22:38:43,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584932851] [2022-07-22 22:38:43,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:38:43,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:38:43,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:38:43,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:38:43,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:38:43,789 INFO L87 Difference]: Start difference. First operand 8438 states and 12353 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 22:38:44,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:38:44,071 INFO L93 Difference]: Finished difference Result 14689 states and 21854 transitions. [2022-07-22 22:38:44,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:38:44,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2022-07-22 22:38:44,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:38:44,097 INFO L225 Difference]: With dead ends: 14689 [2022-07-22 22:38:44,098 INFO L226 Difference]: Without dead ends: 6299 [2022-07-22 22:38:44,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:38:44,133 INFO L413 NwaCegarLoop]: 1369 mSDtfsCounter, 0 mSDsluCounter, 4100 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:38:44,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5469 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:38:44,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6299 states. [2022-07-22 22:38:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6299 to 6285. [2022-07-22 22:38:44,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6285 states, 4703 states have (on average 1.2925792047629172) internal successors, (6079), 4851 states have internal predecessors, (6079), 1195 states have call successors, (1195), 300 states have call predecessors, (1195), 386 states have return successors, (1863), 1175 states have call predecessors, (1863), 1191 states have call successors, (1863) [2022-07-22 22:38:44,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6285 states to 6285 states and 9137 transitions. [2022-07-22 22:38:44,532 INFO L78 Accepts]: Start accepts. Automaton has 6285 states and 9137 transitions. Word has length 130 [2022-07-22 22:38:44,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:38:44,533 INFO L495 AbstractCegarLoop]: Abstraction has 6285 states and 9137 transitions. [2022-07-22 22:38:44,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 22:38:44,533 INFO L276 IsEmpty]: Start isEmpty. Operand 6285 states and 9137 transitions. [2022-07-22 22:38:44,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-22 22:38:44,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:38:44,535 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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] [2022-07-22 22:38:44,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-22 22:38:44,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:38:44,751 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:38:44,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:38:44,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1718591214, now seen corresponding path program 1 times [2022-07-22 22:38:44,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:38:44,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285781419] [2022-07-22 22:38:44,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:44,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:38:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:44,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:38:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:44,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:38:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:44,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:38:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:45,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:45,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:45,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:38:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:45,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 22:38:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:45,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:38:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:45,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:38:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:45,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 22:38:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:45,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:38:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:45,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:38:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:45,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:38:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:45,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:38:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:45,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:38:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:45,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:38:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:45,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 22:38:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 22:38:45,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:38:45,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285781419] [2022-07-22 22:38:45,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285781419] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:38:45,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262766440] [2022-07-22 22:38:45,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:45,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:38:45,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:38:45,236 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) [2022-07-22 22:38:45,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:38:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:46,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 2949 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:38:46,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:38:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-22 22:38:46,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:38:46,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262766440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:38:46,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:38:46,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-22 22:38:46,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198456823] [2022-07-22 22:38:46,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:38:46,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:38:46,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:38:46,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:38:46,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:38:46,176 INFO L87 Difference]: Start difference. First operand 6285 states and 9137 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 22:38:46,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:38:46,392 INFO L93 Difference]: Finished difference Result 12522 states and 18220 transitions. [2022-07-22 22:38:46,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 22:38:46,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 128 [2022-07-22 22:38:46,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:38:46,418 INFO L225 Difference]: With dead ends: 12522 [2022-07-22 22:38:46,418 INFO L226 Difference]: Without dead ends: 6285 [2022-07-22 22:38:46,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:38:46,440 INFO L413 NwaCegarLoop]: 1372 mSDtfsCounter, 22 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4072 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:38:46,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 4072 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:38:46,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6285 states. [2022-07-22 22:38:46,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6285 to 6285. [2022-07-22 22:38:46,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6285 states, 4703 states have (on average 1.2915160535828194) internal successors, (6074), 4851 states have internal predecessors, (6074), 1195 states have call successors, (1195), 300 states have call predecessors, (1195), 386 states have return successors, (1863), 1175 states have call predecessors, (1863), 1191 states have call successors, (1863) [2022-07-22 22:38:46,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6285 states to 6285 states and 9132 transitions. [2022-07-22 22:38:46,729 INFO L78 Accepts]: Start accepts. Automaton has 6285 states and 9132 transitions. Word has length 128 [2022-07-22 22:38:46,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:38:46,729 INFO L495 AbstractCegarLoop]: Abstraction has 6285 states and 9132 transitions. [2022-07-22 22:38:46,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 22:38:46,730 INFO L276 IsEmpty]: Start isEmpty. Operand 6285 states and 9132 transitions. [2022-07-22 22:38:46,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 22:38:46,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:38:46,732 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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] [2022-07-22 22:38:46,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:38:46,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:38:46,956 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:38:46,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:38:46,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1120501507, now seen corresponding path program 1 times [2022-07-22 22:38:46,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:38:46,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682695002] [2022-07-22 22:38:46,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:46,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:38:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:38:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 22:38:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 22:38:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:38:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:38:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:38:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:38:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 22:38:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 22:38:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:38:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:38:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:38:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:38:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 22:38:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:38:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-22 22:38:47,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:38:47,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682695002] [2022-07-22 22:38:47,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682695002] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:38:47,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772298001] [2022-07-22 22:38:47,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:47,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:38:47,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:38:47,369 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) [2022-07-22 22:38:47,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:38:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:48,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 3013 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 22:38:48,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:38:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 22:38:48,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:38:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 22:38:48,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772298001] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 22:38:48,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:38:48,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 6] total 18 [2022-07-22 22:38:48,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930380320] [2022-07-22 22:38:48,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:38:48,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:38:48,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:38:48,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:38:48,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:38:48,687 INFO L87 Difference]: Start difference. First operand 6285 states and 9132 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 5 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-22 22:38:50,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:38:50,887 INFO L93 Difference]: Finished difference Result 10504 states and 15730 transitions. [2022-07-22 22:38:50,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 22:38:50,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 5 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 130 [2022-07-22 22:38:50,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:38:50,929 INFO L225 Difference]: With dead ends: 10504 [2022-07-22 22:38:50,929 INFO L226 Difference]: Without dead ends: 10499 [2022-07-22 22:38:50,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:38:50,939 INFO L413 NwaCegarLoop]: 2144 mSDtfsCounter, 5080 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 1101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5080 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1101 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:38:50,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5080 Valid, 2871 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1101 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 22:38:50,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10499 states. [2022-07-22 22:38:51,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10499 to 10473. [2022-07-22 22:38:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10473 states, 7831 states have (on average 1.2911505554846123) internal successors, (10111), 8077 states have internal predecessors, (10111), 1997 states have call successors, (1997), 494 states have call predecessors, (1997), 644 states have return successors, (3586), 1971 states have call predecessors, (3586), 1993 states have call successors, (3586) [2022-07-22 22:38:51,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10473 states to 10473 states and 15694 transitions. [2022-07-22 22:38:51,464 INFO L78 Accepts]: Start accepts. Automaton has 10473 states and 15694 transitions. Word has length 130 [2022-07-22 22:38:51,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:38:51,465 INFO L495 AbstractCegarLoop]: Abstraction has 10473 states and 15694 transitions. [2022-07-22 22:38:51,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 5 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-22 22:38:51,465 INFO L276 IsEmpty]: Start isEmpty. Operand 10473 states and 15694 transitions. [2022-07-22 22:38:51,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-22 22:38:51,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:38:51,468 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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] [2022-07-22 22:38:51,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:38:51,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 22:38:51,685 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:38:51,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:38:51,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2046530365, now seen corresponding path program 1 times [2022-07-22 22:38:51,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:38:51,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133926765] [2022-07-22 22:38:51,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:51,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:38:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:51,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:38:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:51,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 22:38:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:51,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:52,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:52,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 22:38:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:52,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:38:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:52,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:38:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:52,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:38:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:52,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:38:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:52,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 22:38:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:52,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 22:38:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:52,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:38:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:52,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 22:38:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:52,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 22:38:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:52,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:38:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:52,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:38:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 22:38:52,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:38:52,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133926765] [2022-07-22 22:38:52,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133926765] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:38:52,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86197241] [2022-07-22 22:38:52,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:52,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:38:52,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:38:52,153 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:38:52,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:38:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:53,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 3106 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 22:38:53,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:38:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 22:38:53,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:38:53,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86197241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:38:53,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:38:53,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-22 22:38:53,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788332600] [2022-07-22 22:38:53,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:38:53,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:38:53,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:38:53,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:38:53,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:38:53,260 INFO L87 Difference]: Start difference. First operand 10473 states and 15694 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 22:38:54,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:38:54,023 INFO L93 Difference]: Finished difference Result 25908 states and 40840 transitions. [2022-07-22 22:38:54,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:38:54,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 148 [2022-07-22 22:38:54,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:38:54,100 INFO L225 Difference]: With dead ends: 25908 [2022-07-22 22:38:54,100 INFO L226 Difference]: Without dead ends: 15483 [2022-07-22 22:38:54,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:38:54,172 INFO L413 NwaCegarLoop]: 1889 mSDtfsCounter, 1067 mSDsluCounter, 4818 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 6707 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:38:54,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 6707 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:38:54,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15483 states. [2022-07-22 22:38:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15483 to 10553. [2022-07-22 22:38:54,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10553 states, 7901 states have (on average 1.2898367295279078) internal successors, (10191), 8147 states have internal predecessors, (10191), 2007 states have call successors, (2007), 494 states have call predecessors, (2007), 644 states have return successors, (3596), 1981 states have call predecessors, (3596), 2003 states have call successors, (3596) [2022-07-22 22:38:54,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10553 states to 10553 states and 15794 transitions. [2022-07-22 22:38:54,967 INFO L78 Accepts]: Start accepts. Automaton has 10553 states and 15794 transitions. Word has length 148 [2022-07-22 22:38:54,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:38:54,968 INFO L495 AbstractCegarLoop]: Abstraction has 10553 states and 15794 transitions. [2022-07-22 22:38:54,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 22:38:54,968 INFO L276 IsEmpty]: Start isEmpty. Operand 10553 states and 15794 transitions. [2022-07-22 22:38:54,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-22 22:38:54,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:38:54,971 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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] [2022-07-22 22:38:54,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:38:55,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:38:55,179 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:38:55,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:38:55,184 INFO L85 PathProgramCache]: Analyzing trace with hash -118257663, now seen corresponding path program 1 times [2022-07-22 22:38:55,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:38:55,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687779385] [2022-07-22 22:38:55,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:55,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:38:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:55,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:38:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:55,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 22:38:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:55,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:55,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:55,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 22:38:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:55,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:38:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:55,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:38:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:38:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:55,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:38:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:55,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 22:38:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:55,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 22:38:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:55,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:38:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:55,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 22:38:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 22:38:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:55,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:38:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:55,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:38:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:55,712 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 22:38:55,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:38:55,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687779385] [2022-07-22 22:38:55,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687779385] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:38:55,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746911864] [2022-07-22 22:38:55,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:55,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:38:55,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:38:55,714 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:38:55,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:38:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:56,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 3099 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:38:56,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:38:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 22:38:56,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:38:56,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746911864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:38:56,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:38:56,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-07-22 22:38:56,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193467528] [2022-07-22 22:38:56,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:38:56,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 22:38:56,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:38:56,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 22:38:56,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:38:56,744 INFO L87 Difference]: Start difference. First operand 10553 states and 15794 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 22:38:57,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:38:57,165 INFO L93 Difference]: Finished difference Result 20588 states and 31782 transitions. [2022-07-22 22:38:57,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 22:38:57,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 148 [2022-07-22 22:38:57,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:38:57,207 INFO L225 Difference]: With dead ends: 20588 [2022-07-22 22:38:57,207 INFO L226 Difference]: Without dead ends: 9887 [2022-07-22 22:38:57,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:38:57,269 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 3 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:38:57,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2595 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:38:57,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9887 states. [2022-07-22 22:38:57,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9887 to 9887. [2022-07-22 22:38:57,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9887 states, 7285 states have (on average 1.2797529169526425) internal successors, (9323), 7531 states have internal predecessors, (9323), 1957 states have call successors, (1957), 494 states have call predecessors, (1957), 644 states have return successors, (3532), 1931 states have call predecessors, (3532), 1953 states have call successors, (3532) [2022-07-22 22:38:57,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9887 states to 9887 states and 14812 transitions. [2022-07-22 22:38:57,684 INFO L78 Accepts]: Start accepts. Automaton has 9887 states and 14812 transitions. Word has length 148 [2022-07-22 22:38:57,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:38:57,685 INFO L495 AbstractCegarLoop]: Abstraction has 9887 states and 14812 transitions. [2022-07-22 22:38:57,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 22:38:57,685 INFO L276 IsEmpty]: Start isEmpty. Operand 9887 states and 14812 transitions. [2022-07-22 22:38:57,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 22:38:57,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:38:57,691 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:38:57,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 22:38:57,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:38:57,915 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:38:57,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:38:57,916 INFO L85 PathProgramCache]: Analyzing trace with hash -956951615, now seen corresponding path program 1 times [2022-07-22 22:38:57,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:38:57,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507703483] [2022-07-22 22:38:57,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:57,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:38:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:38:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:38:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:38:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:38:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 22:38:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:38:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:38:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 22:38:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:38:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:38:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:38:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:38:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:38:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:38:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:38:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:38:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:38:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:38:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-22 22:38:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 22:38:58,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:38:58,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507703483] [2022-07-22 22:38:58,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507703483] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:38:58,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991646104] [2022-07-22 22:38:58,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:38:58,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:38:58,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:38:58,560 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:38:58,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 22:38:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:38:59,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 3122 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-22 22:38:59,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:38:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 22:38:59,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:38:59,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991646104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:38:59,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:38:59,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 14 [2022-07-22 22:38:59,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160802651] [2022-07-22 22:38:59,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:38:59,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:38:59,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:38:59,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:38:59,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:38:59,662 INFO L87 Difference]: Start difference. First operand 9887 states and 14812 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (21), 5 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:39:00,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:39:00,167 INFO L93 Difference]: Finished difference Result 19704 states and 30481 transitions. [2022-07-22 22:39:00,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:39:00,168 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (21), 5 states have call predecessors, (21), 2 states have call successors, (21) Word has length 161 [2022-07-22 22:39:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:39:00,210 INFO L225 Difference]: With dead ends: 19704 [2022-07-22 22:39:00,211 INFO L226 Difference]: Without dead ends: 9849 [2022-07-22 22:39:00,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 199 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:39:00,273 INFO L413 NwaCegarLoop]: 1279 mSDtfsCounter, 4 mSDsluCounter, 10192 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 11471 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:39:00,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 11471 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:39:00,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9849 states. [2022-07-22 22:39:00,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9849 to 9828. [2022-07-22 22:39:00,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9828 states, 7244 states have (on average 1.2763666482606295) internal successors, (9246), 7471 states have internal predecessors, (9246), 1937 states have call successors, (1937), 489 states have call predecessors, (1937), 646 states have return successors, (3522), 1937 states have call predecessors, (3522), 1933 states have call successors, (3522) [2022-07-22 22:39:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9828 states to 9828 states and 14705 transitions. [2022-07-22 22:39:00,689 INFO L78 Accepts]: Start accepts. Automaton has 9828 states and 14705 transitions. Word has length 161 [2022-07-22 22:39:00,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:39:00,689 INFO L495 AbstractCegarLoop]: Abstraction has 9828 states and 14705 transitions. [2022-07-22 22:39:00,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (21), 5 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:39:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 9828 states and 14705 transitions. [2022-07-22 22:39:00,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 22:39:00,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:39:00,694 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 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] [2022-07-22 22:39:00,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 22:39:00,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-22 22:39:00,928 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:39:00,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:39:00,929 INFO L85 PathProgramCache]: Analyzing trace with hash -812541920, now seen corresponding path program 1 times [2022-07-22 22:39:00,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:39:00,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342605886] [2022-07-22 22:39:00,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:39:00,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:39:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:39:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:39:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:39:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:39:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:39:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:39:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 22:39:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:39:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:39:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 22:39:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:39:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:39:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:39:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:39:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:39:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:39:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:39:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:39:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:39:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:39:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-22 22:39:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:01,515 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 22:39:01,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:39:01,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342605886] [2022-07-22 22:39:01,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342605886] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:39:01,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89114676] [2022-07-22 22:39:01,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:39:01,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:39:01,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:39:01,525 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:39:01,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 22:39:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:02,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 3131 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-22 22:39:02,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:39:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 22:39:02,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:39:02,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89114676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:39:02,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:39:02,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2022-07-22 22:39:02,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234904682] [2022-07-22 22:39:02,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:39:02,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:39:02,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:39:02,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:39:02,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:39:02,716 INFO L87 Difference]: Start difference. First operand 9828 states and 14705 transitions. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (21), 5 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:39:03,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:39:03,139 INFO L93 Difference]: Finished difference Result 17815 states and 27523 transitions. [2022-07-22 22:39:03,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:39:03,139 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (21), 5 states have call predecessors, (21), 2 states have call successors, (21) Word has length 161 [2022-07-22 22:39:03,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:39:03,185 INFO L225 Difference]: With dead ends: 17815 [2022-07-22 22:39:03,186 INFO L226 Difference]: Without dead ends: 9867 [2022-07-22 22:39:03,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:39:03,232 INFO L413 NwaCegarLoop]: 1279 mSDtfsCounter, 3 mSDsluCounter, 10212 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11491 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:39:03,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11491 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:39:03,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9867 states. [2022-07-22 22:39:03,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9867 to 9867. [2022-07-22 22:39:03,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9867 states, 7275 states have (on average 1.2758762886597939) internal successors, (9282), 7496 states have internal predecessors, (9282), 1937 states have call successors, (1937), 489 states have call predecessors, (1937), 654 states have return successors, (3548), 1951 states have call predecessors, (3548), 1933 states have call successors, (3548) [2022-07-22 22:39:03,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9867 states to 9867 states and 14767 transitions. [2022-07-22 22:39:03,634 INFO L78 Accepts]: Start accepts. Automaton has 9867 states and 14767 transitions. Word has length 161 [2022-07-22 22:39:03,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:39:03,635 INFO L495 AbstractCegarLoop]: Abstraction has 9867 states and 14767 transitions. [2022-07-22 22:39:03,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (21), 5 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:39:03,635 INFO L276 IsEmpty]: Start isEmpty. Operand 9867 states and 14767 transitions. [2022-07-22 22:39:03,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 22:39:03,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:39:03,639 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 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] [2022-07-22 22:39:03,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 22:39:03,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 22:39:03,864 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:39:03,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:39:03,864 INFO L85 PathProgramCache]: Analyzing trace with hash 491851809, now seen corresponding path program 2 times [2022-07-22 22:39:03,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:39:03,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256167751] [2022-07-22 22:39:03,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:39:03,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:39:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:39:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:39:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:39:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:39:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:39:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:39:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 22:39:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:39:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:39:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 22:39:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:39:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:39:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:39:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:39:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:39:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:39:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:39:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:39:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:39:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:39:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-22 22:39:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 22:39:04,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:39:04,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256167751] [2022-07-22 22:39:04,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256167751] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:39:04,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15426075] [2022-07-22 22:39:04,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:39:04,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:39:04,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:39:04,420 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:39:04,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 22:39:05,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:39:05,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:39:05,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 3140 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 22:39:05,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:39:05,689 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 22:39:05,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:39:05,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15426075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:39:05,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:39:05,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 14 [2022-07-22 22:39:05,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245688145] [2022-07-22 22:39:05,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:39:05,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:39:05,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:39:05,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:39:05,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:39:05,692 INFO L87 Difference]: Start difference. First operand 9867 states and 14767 transitions. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (21), 5 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:39:06,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:39:06,227 INFO L93 Difference]: Finished difference Result 19686 states and 30443 transitions. [2022-07-22 22:39:06,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:39:06,228 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (21), 5 states have call predecessors, (21), 2 states have call successors, (21) Word has length 161 [2022-07-22 22:39:06,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:39:06,273 INFO L225 Difference]: With dead ends: 19686 [2022-07-22 22:39:06,274 INFO L226 Difference]: Without dead ends: 9867 [2022-07-22 22:39:06,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 197 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:39:06,332 INFO L413 NwaCegarLoop]: 1289 mSDtfsCounter, 2 mSDsluCounter, 10281 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11570 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:39:06,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11570 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:39:06,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9867 states. [2022-07-22 22:39:06,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9867 to 9849. [2022-07-22 22:39:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9849 states, 7259 states have (on average 1.275244524039124) internal successors, (9257), 7485 states have internal predecessors, (9257), 1937 states have call successors, (1937), 489 states have call predecessors, (1937), 652 states have return successors, (3538), 1944 states have call predecessors, (3538), 1933 states have call successors, (3538) [2022-07-22 22:39:06,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9849 states to 9849 states and 14732 transitions. [2022-07-22 22:39:06,729 INFO L78 Accepts]: Start accepts. Automaton has 9849 states and 14732 transitions. Word has length 161 [2022-07-22 22:39:06,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:39:06,729 INFO L495 AbstractCegarLoop]: Abstraction has 9849 states and 14732 transitions. [2022-07-22 22:39:06,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (21), 5 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:39:06,730 INFO L276 IsEmpty]: Start isEmpty. Operand 9849 states and 14732 transitions. [2022-07-22 22:39:06,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 22:39:06,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:39:06,733 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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] [2022-07-22 22:39:06,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 22:39:06,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-22 22:39:06,958 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:39:06,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:39:06,958 INFO L85 PathProgramCache]: Analyzing trace with hash -2002822577, now seen corresponding path program 1 times [2022-07-22 22:39:06,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:39:06,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689127427] [2022-07-22 22:39:06,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:39:06,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:39:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:39:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:39:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:39:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:39:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:39:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:39:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 22:39:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:39:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:39:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 22:39:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:39:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:39:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:39:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:39:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:39:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:39:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 22:39:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 22:39:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 22:39:07,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:39:07,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689127427] [2022-07-22 22:39:07,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689127427] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:39:07,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522579041] [2022-07-22 22:39:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:39:07,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:39:07,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:39:07,788 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:39:07,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 22:39:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:09,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 3163 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-22 22:39:09,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:39:09,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-22 22:39:10,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-07-22 22:39:10,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-22 22:39:10,243 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:39:10,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-07-22 22:39:10,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-22 22:39:10,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:39:10,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-07-22 22:39:10,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-22 22:39:10,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:39:10,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-07-22 22:39:10,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-22 22:39:10,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:39:10,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-07-22 22:39:10,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-22 22:39:10,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:39:10,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-07-22 22:39:10,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-22 22:39:10,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:39:10,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-07-22 22:39:10,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-22 22:39:10,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:39:10,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-07-22 22:39:10,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-22 22:39:10,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:39:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 22:39:10,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:39:10,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522579041] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:39:10,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:39:10,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 32 [2022-07-22 22:39:10,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55368230] [2022-07-22 22:39:10,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:39:10,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-22 22:39:10,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:39:10,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-22 22:39:10,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=937, Unknown=20, NotChecked=0, Total=1056 [2022-07-22 22:39:10,706 INFO L87 Difference]: Start difference. First operand 9849 states and 14732 transitions. Second operand has 32 states, 32 states have (on average 5.40625) internal successors, (173), 23 states have internal predecessors, (173), 14 states have call successors, (39), 9 states have call predecessors, (39), 12 states have return successors, (36), 15 states have call predecessors, (36), 14 states have call successors, (36) [2022-07-22 22:39:20,738 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 [] [2022-07-22 22:39:36,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:39:36,293 INFO L93 Difference]: Finished difference Result 29550 states and 45636 transitions. [2022-07-22 22:39:36,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-07-22 22:39:36,294 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.40625) internal successors, (173), 23 states have internal predecessors, (173), 14 states have call successors, (39), 9 states have call predecessors, (39), 12 states have return successors, (36), 15 states have call predecessors, (36), 14 states have call successors, (36) Word has length 163 [2022-07-22 22:39:36,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:39:36,378 INFO L225 Difference]: With dead ends: 29550 [2022-07-22 22:39:36,378 INFO L226 Difference]: Without dead ends: 19749 [2022-07-22 22:39:36,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=509, Invalid=4153, Unknown=30, NotChecked=0, Total=4692 [2022-07-22 22:39:36,425 INFO L413 NwaCegarLoop]: 1471 mSDtfsCounter, 2545 mSDsluCounter, 11995 mSDsCounter, 0 mSdLazyCounter, 15783 mSolverCounterSat, 1085 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2665 SdHoareTripleChecker+Valid, 13466 SdHoareTripleChecker+Invalid, 18348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1085 IncrementalHoareTripleChecker+Valid, 15783 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 1479 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:39:36,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2665 Valid, 13466 Invalid, 18348 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1085 Valid, 15783 Invalid, 1 Unknown, 1479 Unchecked, 23.4s Time] [2022-07-22 22:39:36,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19749 states. [2022-07-22 22:39:37,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19749 to 17683. [2022-07-22 22:39:37,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17683 states, 12980 states have (on average 1.263482280431433) internal successors, (16400), 13422 states have internal predecessors, (16400), 3362 states have call successors, (3362), 941 states have call predecessors, (3362), 1340 states have return successors, (6800), 3439 states have call predecessors, (6800), 3358 states have call successors, (6800) [2022-07-22 22:39:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17683 states to 17683 states and 26562 transitions. [2022-07-22 22:39:37,264 INFO L78 Accepts]: Start accepts. Automaton has 17683 states and 26562 transitions. Word has length 163 [2022-07-22 22:39:37,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:39:37,264 INFO L495 AbstractCegarLoop]: Abstraction has 17683 states and 26562 transitions. [2022-07-22 22:39:37,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.40625) internal successors, (173), 23 states have internal predecessors, (173), 14 states have call successors, (39), 9 states have call predecessors, (39), 12 states have return successors, (36), 15 states have call predecessors, (36), 14 states have call successors, (36) [2022-07-22 22:39:37,265 INFO L276 IsEmpty]: Start isEmpty. Operand 17683 states and 26562 transitions. [2022-07-22 22:39:37,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-22 22:39:37,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:39:37,270 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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, 1, 1] [2022-07-22 22:39:37,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-22 22:39:37,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 22:39:37,496 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:39:37,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:39:37,496 INFO L85 PathProgramCache]: Analyzing trace with hash 119108019, now seen corresponding path program 1 times [2022-07-22 22:39:37,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:39:37,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219292694] [2022-07-22 22:39:37,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:39:37,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:39:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:39:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 22:39:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:39:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:39:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 22:39:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:39:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:39:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:39:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:39:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 22:39:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 22:39:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:39:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:39:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:39:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:39:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 22:39:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:39:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:39:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-22 22:39:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-22 22:39:37,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:39:37,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219292694] [2022-07-22 22:39:37,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219292694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:39:37,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:39:37,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 22:39:37,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167979831] [2022-07-22 22:39:37,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:39:37,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:39:37,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:39:37,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:39:37,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:39:37,825 INFO L87 Difference]: Start difference. First operand 17683 states and 26562 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-22 22:39:40,903 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 [] [2022-07-22 22:39:45,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:39:45,083 INFO L93 Difference]: Finished difference Result 34452 states and 54349 transitions. [2022-07-22 22:39:45,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:39:45,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 166 [2022-07-22 22:39:45,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:39:45,163 INFO L225 Difference]: With dead ends: 34452 [2022-07-22 22:39:45,164 INFO L226 Difference]: Without dead ends: 16817 [2022-07-22 22:39:45,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:39:45,274 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 789 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 387 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2833 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:39:45,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 2833 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 1672 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-07-22 22:39:45,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16817 states. [2022-07-22 22:39:45,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16817 to 14948. [2022-07-22 22:39:45,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14948 states, 11026 states have (on average 1.250226736803918) internal successors, (13785), 11411 states have internal predecessors, (13785), 2623 states have call successors, (2623), 901 states have call predecessors, (2623), 1298 states have return successors, (5270), 2755 states have call predecessors, (5270), 2619 states have call successors, (5270) [2022-07-22 22:39:45,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14948 states to 14948 states and 21678 transitions. [2022-07-22 22:39:45,979 INFO L78 Accepts]: Start accepts. Automaton has 14948 states and 21678 transitions. Word has length 166 [2022-07-22 22:39:45,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:39:45,980 INFO L495 AbstractCegarLoop]: Abstraction has 14948 states and 21678 transitions. [2022-07-22 22:39:45,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-22 22:39:45,980 INFO L276 IsEmpty]: Start isEmpty. Operand 14948 states and 21678 transitions. [2022-07-22 22:39:45,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 22:39:45,981 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:39:45,982 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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] [2022-07-22 22:39:45,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 22:39:45,982 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:39:45,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:39:45,982 INFO L85 PathProgramCache]: Analyzing trace with hash 644781777, now seen corresponding path program 1 times [2022-07-22 22:39:45,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:39:45,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162879453] [2022-07-22 22:39:45,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:39:45,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:39:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:39:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:39:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:39:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:39:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:39:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:39:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 22:39:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:39:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:39:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 22:39:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:39:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:39:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:39:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:39:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:39:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:39:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 22:39:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 22:39:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:46,809 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 22:39:46,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:39:46,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162879453] [2022-07-22 22:39:46,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162879453] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:39:46,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637325268] [2022-07-22 22:39:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:39:46,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:39:46,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:39:46,811 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:39:46,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 22:39:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:39:47,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 3164 conjuncts, 53 conjunts are in the unsatisfiable core [2022-07-22 22:39:48,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:39:48,459 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:39:48,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-07-22 22:39:48,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:39:48,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:39:48,525 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:39:48,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-07-22 22:39:48,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:39:48,560 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:39:48,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-07-22 22:39:48,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:39:48,594 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:39:48,594 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-07-22 22:39:48,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:39:48,628 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:39:48,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-07-22 22:39:48,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:39:48,682 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:39:48,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-07-22 22:39:48,779 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 22:39:48,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 23 [2022-07-22 22:39:48,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-22 22:39:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 22:39:48,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:39:49,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-07-22 22:39:49,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637325268] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:39:49,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:39:49,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 37 [2022-07-22 22:39:49,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98401101] [2022-07-22 22:39:49,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:39:49,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-22 22:39:49,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:39:49,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-22 22:39:49,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1412, Unknown=16, NotChecked=0, Total=1560 [2022-07-22 22:39:49,213 INFO L87 Difference]: Start difference. First operand 14948 states and 21678 transitions. Second operand has 37 states, 37 states have (on average 5.8108108108108105) internal successors, (215), 28 states have internal predecessors, (215), 16 states have call successors, (40), 10 states have call predecessors, (40), 12 states have return successors, (36), 17 states have call predecessors, (36), 15 states have call successors, (36) [2022-07-22 22:39:57,156 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 [] [2022-07-22 22:40:37,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:40:37,000 INFO L93 Difference]: Finished difference Result 55298 states and 92671 transitions. [2022-07-22 22:40:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-07-22 22:40:37,001 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.8108108108108105) internal successors, (215), 28 states have internal predecessors, (215), 16 states have call successors, (40), 10 states have call predecessors, (40), 12 states have return successors, (36), 17 states have call predecessors, (36), 15 states have call successors, (36) Word has length 163 [2022-07-22 22:40:37,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:40:37,217 INFO L225 Difference]: With dead ends: 55298 [2022-07-22 22:40:37,217 INFO L226 Difference]: Without dead ends: 40398 [2022-07-22 22:40:37,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 261 SyntacticMatches, 6 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10349 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2683, Invalid=26359, Unknown=28, NotChecked=0, Total=29070 [2022-07-22 22:40:37,290 INFO L413 NwaCegarLoop]: 1134 mSDtfsCounter, 7735 mSDsluCounter, 12854 mSDsCounter, 0 mSdLazyCounter, 36862 mSolverCounterSat, 4312 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7920 SdHoareTripleChecker+Valid, 13988 SdHoareTripleChecker+Invalid, 43874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4312 IncrementalHoareTripleChecker+Valid, 36862 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 2699 IncrementalHoareTripleChecker+Unchecked, 40.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:40:37,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7920 Valid, 13988 Invalid, 43874 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4312 Valid, 36862 Invalid, 1 Unknown, 2699 Unchecked, 40.6s Time] [2022-07-22 22:40:37,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40398 states. [2022-07-22 22:40:39,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40398 to 35031. [2022-07-22 22:40:39,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35031 states, 25909 states have (on average 1.2407657570728319) internal successors, (32147), 26819 states have internal predecessors, (32147), 6055 states have call successors, (6055), 2074 states have call predecessors, (6055), 3066 states have return successors, (16476), 6302 states have call predecessors, (16476), 6051 states have call successors, (16476) [2022-07-22 22:40:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35031 states to 35031 states and 54678 transitions. [2022-07-22 22:40:39,526 INFO L78 Accepts]: Start accepts. Automaton has 35031 states and 54678 transitions. Word has length 163 [2022-07-22 22:40:39,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:40:39,527 INFO L495 AbstractCegarLoop]: Abstraction has 35031 states and 54678 transitions. [2022-07-22 22:40:39,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.8108108108108105) internal successors, (215), 28 states have internal predecessors, (215), 16 states have call successors, (40), 10 states have call predecessors, (40), 12 states have return successors, (36), 17 states have call predecessors, (36), 15 states have call successors, (36) [2022-07-22 22:40:39,527 INFO L276 IsEmpty]: Start isEmpty. Operand 35031 states and 54678 transitions. [2022-07-22 22:40:39,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-22 22:40:39,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:40:39,530 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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, 1, 1] [2022-07-22 22:40:39,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 22:40:39,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:40:39,754 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:40:39,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:40:39,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1685855098, now seen corresponding path program 1 times [2022-07-22 22:40:39,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:40:39,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916171488] [2022-07-22 22:40:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:40:39,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:40:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:39,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:40:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:39,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:40:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:39,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:40:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:39,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:40:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:39,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:40:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:39,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:40:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:39,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 22:40:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:40,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:40:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:40,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:40:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:40,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:40:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:40,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:40:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:40,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:40:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:40,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:40:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:40,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 22:40:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:40,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 22:40:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:40,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:40:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:40,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:40:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:40,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 22:40:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:40,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-22 22:40:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 22:40:40,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:40:40,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916171488] [2022-07-22 22:40:40,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916171488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:40:40,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:40:40,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:40:40,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364176557] [2022-07-22 22:40:40,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:40:40,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:40:40,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:40:40,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:40:40,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:40:40,095 INFO L87 Difference]: Start difference. First operand 35031 states and 54678 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 22:40:43,110 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 [] [2022-07-22 22:40:48,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:40:48,371 INFO L93 Difference]: Finished difference Result 73861 states and 128367 transitions. [2022-07-22 22:40:48,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:40:48,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 166 [2022-07-22 22:40:48,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:40:48,727 INFO L225 Difference]: With dead ends: 73861 [2022-07-22 22:40:48,728 INFO L226 Difference]: Without dead ends: 38878 [2022-07-22 22:40:48,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:40:48,840 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 615 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 241 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:40:48,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 2739 Invalid, 2533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 2291 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-07-22 22:40:48,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38878 states. [2022-07-22 22:40:50,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38878 to 35152. [2022-07-22 22:40:50,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35152 states, 25990 states have (on average 1.2403616775682955) internal successors, (32237), 26900 states have internal predecessors, (32237), 6075 states have call successors, (6075), 2089 states have call predecessors, (6075), 3086 states have return successors, (16600), 6327 states have call predecessors, (16600), 6071 states have call successors, (16600) [2022-07-22 22:40:50,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35152 states to 35152 states and 54912 transitions. [2022-07-22 22:40:50,824 INFO L78 Accepts]: Start accepts. Automaton has 35152 states and 54912 transitions. Word has length 166 [2022-07-22 22:40:50,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:40:50,826 INFO L495 AbstractCegarLoop]: Abstraction has 35152 states and 54912 transitions. [2022-07-22 22:40:50,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 22:40:50,827 INFO L276 IsEmpty]: Start isEmpty. Operand 35152 states and 54912 transitions. [2022-07-22 22:40:50,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 22:40:50,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:40:50,829 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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, 1, 1, 1] [2022-07-22 22:40:50,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 22:40:50,829 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:40:50,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:40:50,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1816501506, now seen corresponding path program 1 times [2022-07-22 22:40:50,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:40:50,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598846496] [2022-07-22 22:40:50,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:40:50,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:40:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:50,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:40:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:50,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:40:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:40:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:40:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:40:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:40:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 22:40:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:40:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:40:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:40:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:40:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:40:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:40:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:40:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 22:40:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:40:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:40:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 22:40:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 22:40:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:40:51,116 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 22:40:51,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:40:51,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598846496] [2022-07-22 22:40:51,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598846496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:40:51,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:40:51,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:40:51,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133586701] [2022-07-22 22:40:51,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:40:51,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:40:51,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:40:51,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:40:51,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:40:51,118 INFO L87 Difference]: Start difference. First operand 35152 states and 54912 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 22:40:53,944 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 [] [2022-07-22 22:40:58,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:40:58,959 INFO L93 Difference]: Finished difference Result 74052 states and 128635 transitions. [2022-07-22 22:40:58,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:40:58,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 167 [2022-07-22 22:40:58,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:40:59,185 INFO L225 Difference]: With dead ends: 74052 [2022-07-22 22:40:59,185 INFO L226 Difference]: Without dead ends: 38948 [2022-07-22 22:40:59,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:40:59,486 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 1022 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 475 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 1737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:40:59,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 2274 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 1737 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-07-22 22:40:59,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38948 states. [2022-07-22 22:41:01,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38948 to 35227. [2022-07-22 22:41:01,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35227 states, 26050 states have (on average 1.2398080614203455) internal successors, (32297), 26960 states have internal predecessors, (32297), 6075 states have call successors, (6075), 2104 states have call predecessors, (6075), 3101 states have return successors, (16600), 6327 states have call predecessors, (16600), 6071 states have call successors, (16600) [2022-07-22 22:41:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35227 states to 35227 states and 54972 transitions. [2022-07-22 22:41:01,721 INFO L78 Accepts]: Start accepts. Automaton has 35227 states and 54972 transitions. Word has length 167 [2022-07-22 22:41:01,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:41:01,722 INFO L495 AbstractCegarLoop]: Abstraction has 35227 states and 54972 transitions. [2022-07-22 22:41:01,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 22:41:01,723 INFO L276 IsEmpty]: Start isEmpty. Operand 35227 states and 54972 transitions. [2022-07-22 22:41:01,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 22:41:01,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:41:01,725 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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] [2022-07-22 22:41:01,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 22:41:01,725 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:41:01,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:41:01,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1043495825, now seen corresponding path program 1 times [2022-07-22 22:41:01,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:41:01,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576041774] [2022-07-22 22:41:01,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:41:01,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:41:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:01,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:41:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:41:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:02,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:41:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:02,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:41:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:02,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:41:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:02,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:41:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:02,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 22:41:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:02,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:41:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:02,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:41:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:02,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 22:41:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:02,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:41:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:02,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:41:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:02,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:41:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:02,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:41:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:02,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:41:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:02,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:41:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:02,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 22:41:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:02,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 22:41:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:02,640 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 22:41:02,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:41:02,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576041774] [2022-07-22 22:41:02,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576041774] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:41:02,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095041547] [2022-07-22 22:41:02,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:41:02,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:41:02,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:41:02,642 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:41:02,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 22:41:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:04,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 3166 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-22 22:41:04,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:41:04,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-22 22:41:04,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:41:04,511 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:41:04,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:41:04,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:41:04,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:41:04,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:41:04,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:41:04,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:41:04,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:41:04,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 22:41:05,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-22 22:41:05,166 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 22:41:05,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:41:05,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095041547] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:41:05,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:41:05,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 36 [2022-07-22 22:41:05,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659572842] [2022-07-22 22:41:05,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:41:05,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-22 22:41:05,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:41:05,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-22 22:41:05,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1281, Unknown=9, NotChecked=0, Total=1406 [2022-07-22 22:41:05,431 INFO L87 Difference]: Start difference. First operand 35227 states and 54972 transitions. Second operand has 36 states, 36 states have (on average 5.583333333333333) internal successors, (201), 27 states have internal predecessors, (201), 16 states have call successors, (40), 10 states have call predecessors, (40), 12 states have return successors, (36), 17 states have call predecessors, (36), 16 states have call successors, (36) [2022-07-22 22:41:12,262 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 [] [2022-07-22 22:41:32,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:41:32,616 INFO L93 Difference]: Finished difference Result 74675 states and 120646 transitions. [2022-07-22 22:41:32,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-07-22 22:41:32,617 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.583333333333333) internal successors, (201), 27 states have internal predecessors, (201), 16 states have call successors, (40), 10 states have call predecessors, (40), 12 states have return successors, (36), 17 states have call predecessors, (36), 16 states have call successors, (36) Word has length 163 [2022-07-22 22:41:32,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:41:32,834 INFO L225 Difference]: With dead ends: 74675 [2022-07-22 22:41:32,835 INFO L226 Difference]: Without dead ends: 39613 [2022-07-22 22:41:33,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 234 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1445 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=556, Invalid=4976, Unknown=18, NotChecked=0, Total=5550 [2022-07-22 22:41:33,235 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 3205 mSDsluCounter, 9009 mSDsCounter, 0 mSdLazyCounter, 15046 mSolverCounterSat, 1385 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3320 SdHoareTripleChecker+Valid, 9949 SdHoareTripleChecker+Invalid, 17292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1385 IncrementalHoareTripleChecker+Valid, 15046 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 860 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:41:33,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3320 Valid, 9949 Invalid, 17292 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1385 Valid, 15046 Invalid, 1 Unknown, 860 Unchecked, 23.3s Time] [2022-07-22 22:41:33,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39613 states. [2022-07-22 22:41:35,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39613 to 35615. [2022-07-22 22:41:35,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35615 states, 26308 states have (on average 1.238140489584917) internal successors, (32573), 27248 states have internal predecessors, (32573), 6097 states have call successors, (6097), 2158 states have call predecessors, (6097), 3209 states have return successors, (16697), 6373 states have call predecessors, (16697), 6093 states have call successors, (16697) [2022-07-22 22:41:35,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35615 states to 35615 states and 55367 transitions. [2022-07-22 22:41:35,453 INFO L78 Accepts]: Start accepts. Automaton has 35615 states and 55367 transitions. Word has length 163 [2022-07-22 22:41:35,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:41:35,454 INFO L495 AbstractCegarLoop]: Abstraction has 35615 states and 55367 transitions. [2022-07-22 22:41:35,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.583333333333333) internal successors, (201), 27 states have internal predecessors, (201), 16 states have call successors, (40), 10 states have call predecessors, (40), 12 states have return successors, (36), 17 states have call predecessors, (36), 16 states have call successors, (36) [2022-07-22 22:41:35,454 INFO L276 IsEmpty]: Start isEmpty. Operand 35615 states and 55367 transitions. [2022-07-22 22:41:35,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 22:41:35,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:41:35,457 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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, 1, 1, 1] [2022-07-22 22:41:35,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 22:41:35,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-22 22:41:35,673 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:41:35,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:41:35,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1184539208, now seen corresponding path program 1 times [2022-07-22 22:41:35,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:41:35,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8196167] [2022-07-22 22:41:35,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:41:35,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:41:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:35,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:41:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:35,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:41:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:41:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:41:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:41:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:41:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:41:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:41:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:41:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:41:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:41:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:41:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:41:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:41:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 22:41:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:41:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 22:41:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 22:41:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 22:41:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 22:41:36,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:41:36,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8196167] [2022-07-22 22:41:36,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8196167] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:41:36,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555489342] [2022-07-22 22:41:36,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:41:36,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:41:36,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:41:36,639 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:41:36,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 22:41:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:41:37,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 3214 conjuncts, 63 conjunts are in the unsatisfiable core [2022-07-22 22:41:38,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:41:38,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-22 22:41:38,626 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:41:38,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:41:38,656 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:41:38,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:41:38,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:41:38,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:41:38,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:41:38,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:41:39,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:41:39,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 22:41:39,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-22 22:41:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 22:41:39,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:41:39,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555489342] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:41:39,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:41:39,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 42 [2022-07-22 22:41:39,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420699658] [2022-07-22 22:41:39,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:41:39,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-22 22:41:39,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:41:39,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-22 22:41:39,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1718, Unknown=23, NotChecked=0, Total=1892 [2022-07-22 22:41:39,508 INFO L87 Difference]: Start difference. First operand 35615 states and 55367 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 29 states have internal predecessors, (206), 14 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (38), 17 states have call predecessors, (38), 14 states have call successors, (38) [2022-07-22 22:41:46,614 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 []