./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.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 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 22:46:13,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 22:46:13,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 22:46:13,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 22:46:13,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 22:46:13,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 22:46:13,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 22:46:13,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 22:46:13,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 22:46:13,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 22:46:13,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 22:46:13,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 22:46:13,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 22:46:13,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 22:46:13,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 22:46:13,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 22:46:13,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 22:46:13,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 22:46:13,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 22:46:13,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 22:46:13,721 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 22:46:13,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 22:46:13,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 22:46:13,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 22:46:13,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 22:46:13,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 22:46:13,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 22:46:13,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 22:46:13,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 22:46:13,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 22:46:13,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 22:46:13,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 22:46:13,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 22:46:13,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 22:46:13,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 22:46:13,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 22:46:13,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 22:46:13,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 22:46:13,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 22:46:13,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 22:46:13,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 22:46:13,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 22:46:13,745 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 22:46:13,773 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 22:46:13,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 22:46:13,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 22:46:13,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 22:46:13,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 22:46:13,775 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 22:46:13,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 22:46:13,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 22:46:13,776 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 22:46:13,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 22:46:13,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 22:46:13,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 22:46:13,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 22:46:13,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 22:46:13,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 22:46:13,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 22:46:13,779 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 22:46:13,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 22:46:13,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 22:46:13,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 22:46:13,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 22:46:13,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:46:13,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 22:46:13,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 22:46:13,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 22:46:13,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 22:46:13,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 22:46:13,781 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 22:46:13,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 22:46:13,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 22:46:13,782 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb [2022-07-19 22:46:14,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 22:46:14,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 22:46:14,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 22:46:14,047 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 22:46:14,048 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 22:46:14,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-07-19 22:46:14,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89471bc08/cc0ff0bb51b64e1eafe4b5e14ecf6d7e/FLAG09cecc238 [2022-07-19 22:46:14,799 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 22:46:14,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-07-19 22:46:14,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89471bc08/cc0ff0bb51b64e1eafe4b5e14ecf6d7e/FLAG09cecc238 [2022-07-19 22:46:14,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89471bc08/cc0ff0bb51b64e1eafe4b5e14ecf6d7e [2022-07-19 22:46:14,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 22:46:14,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 22:46:14,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 22:46:14,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 22:46:14,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 22:46:14,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:46:14" (1/1) ... [2022-07-19 22:46:14,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b2c665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:46:14, skipping insertion in model container [2022-07-19 22:46:14,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:46:14" (1/1) ... [2022-07-19 22:46:14,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 22:46:15,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:46:16,356 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-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-07-19 22:46:16,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:46:16,392 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 22:46:16,692 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-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-07-19 22:46:16,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:46:16,792 INFO L208 MainTranslator]: Completed translation [2022-07-19 22:46:16,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:46:16 WrapperNode [2022-07-19 22:46:16,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 22:46:16,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 22:46:16,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 22:46:16,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 22:46:16,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:46:16" (1/1) ... [2022-07-19 22:46:16,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:46:16" (1/1) ... [2022-07-19 22:46:16,985 INFO L137 Inliner]: procedures = 157, calls = 812, calls flagged for inlining = 80, calls inlined = 79, statements flattened = 2787 [2022-07-19 22:46:16,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 22:46:16,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 22:46:16,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 22:46:16,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 22:46:16,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:46:16" (1/1) ... [2022-07-19 22:46:16,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:46:16" (1/1) ... [2022-07-19 22:46:17,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:46:16" (1/1) ... [2022-07-19 22:46:17,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:46:16" (1/1) ... [2022-07-19 22:46:17,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:46:16" (1/1) ... [2022-07-19 22:46:17,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:46:16" (1/1) ... [2022-07-19 22:46:17,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:46:16" (1/1) ... [2022-07-19 22:46:17,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 22:46:17,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 22:46:17,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 22:46:17,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 22:46:17,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:46:16" (1/1) ... [2022-07-19 22:46:17,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:46:17,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:46:17,207 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) [2022-07-19 22:46:17,239 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 [2022-07-19 22:46:17,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-19 22:46:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-19 22:46:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-19 22:46:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 22:46:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 22:46:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-07-19 22:46:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-07-19 22:46:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-07-19 22:46:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-07-19 22:46:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-07-19 22:46:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-07-19 22:46:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-19 22:46:17,268 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-19 22:46:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-19 22:46:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-19 22:46:17,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 22:46:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 22:46:17,269 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-19 22:46:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-19 22:46:17,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2022-07-19 22:46:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2022-07-19 22:46:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-07-19 22:46:17,270 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-07-19 22:46:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-19 22:46:17,270 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-19 22:46:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-07-19 22:46:17,271 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-07-19 22:46:17,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 22:46:17,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-07-19 22:46:17,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-07-19 22:46:17,271 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-07-19 22:46:17,271 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-07-19 22:46:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-19 22:46:17,272 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-19 22:46:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 22:46:17,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 22:46:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-19 22:46:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-19 22:46:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-07-19 22:46:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-07-19 22:46:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 22:46:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-07-19 22:46:17,274 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-07-19 22:46:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-07-19 22:46:17,274 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-07-19 22:46:17,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 22:46:17,275 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-07-19 22:46:17,275 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-07-19 22:46:17,275 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-07-19 22:46:17,275 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-07-19 22:46:17,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 22:46:17,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 22:46:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-19 22:46:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-19 22:46:17,276 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-19 22:46:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 22:46:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-07-19 22:46:17,278 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-07-19 22:46:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-19 22:46:17,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-19 22:46:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-19 22:46:17,279 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-19 22:46:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-07-19 22:46:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-07-19 22:46:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-07-19 22:46:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-07-19 22:46:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 22:46:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-07-19 22:46:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-07-19 22:46:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 22:46:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-07-19 22:46:17,281 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-07-19 22:46:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-07-19 22:46:17,282 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-07-19 22:46:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-19 22:46:17,282 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-19 22:46:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-19 22:46:17,282 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-19 22:46:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-19 22:46:17,283 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-19 22:46:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-19 22:46:17,283 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-19 22:46:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-19 22:46:17,283 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-19 22:46:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-19 22:46:17,283 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-19 22:46:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-19 22:46:17,284 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-19 22:46:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 22:46:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-19 22:46:17,285 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-19 22:46:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-19 22:46:17,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-19 22:46:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-07-19 22:46:17,285 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-07-19 22:46:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-07-19 22:46:17,286 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-07-19 22:46:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-19 22:46:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 22:46:17,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 22:46:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-07-19 22:46:17,287 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-07-19 22:46:17,288 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-19 22:46:17,288 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-19 22:46:17,795 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 22:46:17,800 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 22:46:20,633 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 22:46:20,652 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 22:46:20,653 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 22:46:20,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:46:20 BoogieIcfgContainer [2022-07-19 22:46:20,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 22:46:20,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 22:46:20,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 22:46:20,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 22:46:20,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:46:14" (1/3) ... [2022-07-19 22:46:20,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3329685e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:46:20, skipping insertion in model container [2022-07-19 22:46:20,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:46:16" (2/3) ... [2022-07-19 22:46:20,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3329685e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:46:20, skipping insertion in model container [2022-07-19 22:46:20,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:46:20" (3/3) ... [2022-07-19 22:46:20,672 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-07-19 22:46:20,689 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 22:46:20,690 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 22:46:20,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 22:46:20,795 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@3dad2111, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@583d6bea [2022-07-19 22:46:20,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 22:46:20,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 968 states, 716 states have (on average 1.4329608938547487) internal successors, (1026), 743 states have internal predecessors, (1026), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) [2022-07-19 22:46:20,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 22:46:20,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:46:20,863 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 22:46:20,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:46:20,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:46:20,874 INFO L85 PathProgramCache]: Analyzing trace with hash -579474216, now seen corresponding path program 1 times [2022-07-19 22:46:20,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:46:20,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748485993] [2022-07-19 22:46:20,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:46:20,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:46:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:21,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:46:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:21,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:21,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 22:46:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:21,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:46:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:21,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 22:46:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 22:46:21,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:46:21,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748485993] [2022-07-19 22:46:21,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748485993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:46:21,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:46:21,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 22:46:21,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915910888] [2022-07-19 22:46:21,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:46:21,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:46:21,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:46:21,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:46:21,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:46:21,419 INFO L87 Difference]: Start difference. First operand has 968 states, 716 states have (on average 1.4329608938547487) internal successors, (1026), 743 states have internal predecessors, (1026), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-19 22:46:22,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:46:22,607 INFO L93 Difference]: Finished difference Result 1950 states and 2923 transitions. [2022-07-19 22:46:22,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 22:46:22,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 59 [2022-07-19 22:46:22,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:46:22,628 INFO L225 Difference]: With dead ends: 1950 [2022-07-19 22:46:22,628 INFO L226 Difference]: Without dead ends: 947 [2022-07-19 22:46:22,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:46:22,643 INFO L413 NwaCegarLoop]: 1378 mSDtfsCounter, 1573 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 22:46:22,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 1988 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 22:46:22,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-07-19 22:46:22,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 929. [2022-07-19 22:46:22,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 686 states have (on average 1.4183673469387754) internal successors, (973), 710 states have internal predecessors, (973), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-07-19 22:46:22,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1371 transitions. [2022-07-19 22:46:22,819 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1371 transitions. Word has length 59 [2022-07-19 22:46:22,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:46:22,820 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1371 transitions. [2022-07-19 22:46:22,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-19 22:46:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1371 transitions. [2022-07-19 22:46:22,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 22:46:22,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:46:22,831 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 22:46:22,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 22:46:22,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:46:22,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:46:22,833 INFO L85 PathProgramCache]: Analyzing trace with hash -155827494, now seen corresponding path program 1 times [2022-07-19 22:46:22,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:46:22,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567443707] [2022-07-19 22:46:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:46:22,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:46:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:22,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:46:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:22,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:22,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 22:46:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:22,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:46:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:22,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:23,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 22:46:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 22:46:23,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:46:23,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567443707] [2022-07-19 22:46:23,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567443707] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:46:23,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:46:23,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 22:46:23,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405063289] [2022-07-19 22:46:23,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:46:23,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 22:46:23,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:46:23,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 22:46:23,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:46:23,017 INFO L87 Difference]: Start difference. First operand 929 states and 1371 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 22:46:24,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:46:24,605 INFO L93 Difference]: Finished difference Result 1859 states and 2750 transitions. [2022-07-19 22:46:24,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:46:24,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-07-19 22:46:24,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:46:24,615 INFO L225 Difference]: With dead ends: 1859 [2022-07-19 22:46:24,615 INFO L226 Difference]: Without dead ends: 947 [2022-07-19 22:46:24,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:46:24,625 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 372 mSDsluCounter, 2190 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 3507 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:46:24,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 3507 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 22:46:24,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-07-19 22:46:24,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 929. [2022-07-19 22:46:24,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 686 states have (on average 1.4169096209912537) internal successors, (972), 710 states have internal predecessors, (972), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-07-19 22:46:24,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1370 transitions. [2022-07-19 22:46:24,695 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1370 transitions. Word has length 59 [2022-07-19 22:46:24,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:46:24,697 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1370 transitions. [2022-07-19 22:46:24,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 22:46:24,697 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1370 transitions. [2022-07-19 22:46:24,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-19 22:46:24,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:46:24,699 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 22:46:24,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 22:46:24,699 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:46:24,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:46:24,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1779924711, now seen corresponding path program 1 times [2022-07-19 22:46:24,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:46:24,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049384746] [2022-07-19 22:46:24,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:46:24,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:46:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:24,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:46:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:24,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:24,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 22:46:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:24,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:46:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:24,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:24,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:46:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:24,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 22:46:24,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:46:24,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049384746] [2022-07-19 22:46:24,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049384746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:46:24,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:46:24,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 22:46:24,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818031703] [2022-07-19 22:46:24,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:46:24,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 22:46:24,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:46:24,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 22:46:24,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:46:24,870 INFO L87 Difference]: Start difference. First operand 929 states and 1370 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-19 22:46:26,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:46:26,897 INFO L93 Difference]: Finished difference Result 1461 states and 2231 transitions. [2022-07-19 22:46:26,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:46:26,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2022-07-19 22:46:26,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:46:26,907 INFO L225 Difference]: With dead ends: 1461 [2022-07-19 22:46:26,907 INFO L226 Difference]: Without dead ends: 1459 [2022-07-19 22:46:26,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:46:26,914 INFO L413 NwaCegarLoop]: 2126 mSDtfsCounter, 1296 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 5277 SdHoareTripleChecker+Invalid, 1975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 22:46:26,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 5277 Invalid, 1975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 22:46:26,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2022-07-19 22:46:26,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 931. [2022-07-19 22:46:26,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 688 states have (on average 1.4156976744186047) internal successors, (974), 712 states have internal predecessors, (974), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-07-19 22:46:26,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1372 transitions. [2022-07-19 22:46:26,995 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1372 transitions. Word has length 62 [2022-07-19 22:46:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:46:26,997 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 1372 transitions. [2022-07-19 22:46:26,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-19 22:46:26,997 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1372 transitions. [2022-07-19 22:46:26,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 22:46:27,000 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:46:27,000 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 22:46:27,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 22:46:27,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:46:27,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:46:27,001 INFO L85 PathProgramCache]: Analyzing trace with hash 2124530077, now seen corresponding path program 1 times [2022-07-19 22:46:27,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:46:27,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676689197] [2022-07-19 22:46:27,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:46:27,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:46:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:27,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:46:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:27,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:27,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 22:46:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:27,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:46:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:27,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:27,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:46:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:27,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:46:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 22:46:27,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:46:27,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676689197] [2022-07-19 22:46:27,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676689197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:46:27,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:46:27,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 22:46:27,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779789841] [2022-07-19 22:46:27,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:46:27,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 22:46:27,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:46:27,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 22:46:27,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:46:27,220 INFO L87 Difference]: Start difference. First operand 931 states and 1372 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 22:46:29,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:46:29,054 INFO L93 Difference]: Finished difference Result 2375 states and 3581 transitions. [2022-07-19 22:46:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:46:29,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-07-19 22:46:29,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:46:29,064 INFO L225 Difference]: With dead ends: 2375 [2022-07-19 22:46:29,065 INFO L226 Difference]: Without dead ends: 1463 [2022-07-19 22:46:29,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:46:29,076 INFO L413 NwaCegarLoop]: 1808 mSDtfsCounter, 2032 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 3388 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:46:29,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 3388 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 22:46:29,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2022-07-19 22:46:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 932. [2022-07-19 22:46:29,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 689 states have (on average 1.4150943396226414) internal successors, (975), 713 states have internal predecessors, (975), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-07-19 22:46:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1373 transitions. [2022-07-19 22:46:29,150 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1373 transitions. Word has length 72 [2022-07-19 22:46:29,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:46:29,152 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1373 transitions. [2022-07-19 22:46:29,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 22:46:29,152 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1373 transitions. [2022-07-19 22:46:29,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 22:46:29,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:46:29,158 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 22:46:29,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 22:46:29,158 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:46:29,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:46:29,159 INFO L85 PathProgramCache]: Analyzing trace with hash -45216834, now seen corresponding path program 1 times [2022-07-19 22:46:29,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:46:29,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529030629] [2022-07-19 22:46:29,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:46:29,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:46:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:29,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:46:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:29,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 22:46:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:29,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:46:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:29,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:29,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:46:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:29,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 22:46:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:29,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 22:46:29,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:46:29,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529030629] [2022-07-19 22:46:29,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529030629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:46:29,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:46:29,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 22:46:29,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341755528] [2022-07-19 22:46:29,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:46:29,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:46:29,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:46:29,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:46:29,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:46:29,353 INFO L87 Difference]: Start difference. First operand 932 states and 1373 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 22:46:32,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:46:32,828 INFO L93 Difference]: Finished difference Result 2242 states and 3484 transitions. [2022-07-19 22:46:32,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:46:32,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-07-19 22:46:32,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:46:32,844 INFO L225 Difference]: With dead ends: 2242 [2022-07-19 22:46:32,844 INFO L226 Difference]: Without dead ends: 2240 [2022-07-19 22:46:32,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:46:32,849 INFO L413 NwaCegarLoop]: 2592 mSDtfsCounter, 2635 mSDsluCounter, 5570 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 808 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2832 SdHoareTripleChecker+Valid, 8162 SdHoareTripleChecker+Invalid, 3475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 808 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:46:32,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2832 Valid, 8162 Invalid, 3475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [808 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 22:46:32,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2022-07-19 22:46:32,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 934. [2022-07-19 22:46:32,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 690 states have (on average 1.4144927536231884) internal successors, (976), 713 states have internal predecessors, (976), 200 states have call successors, (200), 43 states have call predecessors, (200), 43 states have return successors, (200), 198 states have call predecessors, (200), 200 states have call successors, (200) [2022-07-19 22:46:32,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1376 transitions. [2022-07-19 22:46:32,967 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1376 transitions. Word has length 74 [2022-07-19 22:46:32,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:46:32,968 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 1376 transitions. [2022-07-19 22:46:32,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 22:46:32,969 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1376 transitions. [2022-07-19 22:46:32,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-19 22:46:32,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:46:32,974 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 22:46:32,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 22:46:32,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:46:32,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:46:32,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1411070669, now seen corresponding path program 1 times [2022-07-19 22:46:32,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:46:32,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460411780] [2022-07-19 22:46:32,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:46:32,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:46:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:33,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:46:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:33,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:33,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 22:46:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:33,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:46:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:33,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:33,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:46:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:33,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 22:46:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:33,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:46:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:33,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 22:46:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:33,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:46:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:33,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 22:46:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 22:46:33,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:46:33,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460411780] [2022-07-19 22:46:33,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460411780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:46:33,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:46:33,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 22:46:33,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725809044] [2022-07-19 22:46:33,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:46:33,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:46:33,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:46:33,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:46:33,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:46:33,236 INFO L87 Difference]: Start difference. First operand 934 states and 1376 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 22:46:34,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:46:34,257 INFO L93 Difference]: Finished difference Result 1896 states and 2786 transitions. [2022-07-19 22:46:34,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:46:34,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2022-07-19 22:46:34,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:46:34,263 INFO L225 Difference]: With dead ends: 1896 [2022-07-19 22:46:34,263 INFO L226 Difference]: Without dead ends: 981 [2022-07-19 22:46:34,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:46:34,268 INFO L413 NwaCegarLoop]: 1320 mSDtfsCounter, 1481 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 22:46:34,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 1919 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 22:46:34,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-07-19 22:46:34,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 954. [2022-07-19 22:46:34,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 704 states have (on average 1.40625) internal successors, (990), 727 states have internal predecessors, (990), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-07-19 22:46:34,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1394 transitions. [2022-07-19 22:46:34,382 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1394 transitions. Word has length 104 [2022-07-19 22:46:34,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:46:34,382 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1394 transitions. [2022-07-19 22:46:34,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 22:46:34,383 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1394 transitions. [2022-07-19 22:46:34,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 22:46:34,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:46:34,387 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 22:46:34,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 22:46:34,388 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:46:34,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:46:34,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1281162515, now seen corresponding path program 1 times [2022-07-19 22:46:34,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:46:34,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491897858] [2022-07-19 22:46:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:46:34,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:46:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:34,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:46:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:34,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:34,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 22:46:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:34,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:46:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:34,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:34,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:46:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:34,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 22:46:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:34,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:46:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:34,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:46:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:34,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 22:46:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:34,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:46:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 22:46:34,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:46:34,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491897858] [2022-07-19 22:46:34,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491897858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:46:34,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:46:34,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 22:46:34,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748424653] [2022-07-19 22:46:34,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:46:34,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 22:46:34,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:46:34,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 22:46:34,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:46:34,634 INFO L87 Difference]: Start difference. First operand 954 states and 1394 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 22:46:36,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:46:36,702 INFO L93 Difference]: Finished difference Result 2412 states and 3616 transitions. [2022-07-19 22:46:36,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:46:36,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2022-07-19 22:46:36,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:46:36,712 INFO L225 Difference]: With dead ends: 2412 [2022-07-19 22:46:36,712 INFO L226 Difference]: Without dead ends: 1497 [2022-07-19 22:46:36,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:46:36,716 INFO L413 NwaCegarLoop]: 1877 mSDtfsCounter, 2123 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2392 SdHoareTripleChecker+Valid, 3506 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 22:46:36,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2392 Valid, 3506 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 22:46:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2022-07-19 22:46:36,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 958. [2022-07-19 22:46:36,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 708 states have (on average 1.405367231638418) internal successors, (995), 731 states have internal predecessors, (995), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-07-19 22:46:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1399 transitions. [2022-07-19 22:46:36,821 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1399 transitions. Word has length 106 [2022-07-19 22:46:36,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:46:36,823 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1399 transitions. [2022-07-19 22:46:36,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 22:46:36,823 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1399 transitions. [2022-07-19 22:46:36,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 22:46:36,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:46:36,828 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 22:46:36,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 22:46:36,828 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:46:36,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:46:36,829 INFO L85 PathProgramCache]: Analyzing trace with hash 10856094, now seen corresponding path program 1 times [2022-07-19 22:46:36,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:46:36,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722973523] [2022-07-19 22:46:36,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:46:36,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:46:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:36,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:46:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:36,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:36,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 22:46:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:36,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:46:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:36,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:36,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:46:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:36,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 22:46:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:36,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 22:46:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:36,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 22:46:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:36,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 22:46:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:36,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:46:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-19 22:46:36,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:46:36,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722973523] [2022-07-19 22:46:36,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722973523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:46:36,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:46:36,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 22:46:36,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775859349] [2022-07-19 22:46:36,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:46:36,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:46:36,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:46:36,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:46:36,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:46:36,993 INFO L87 Difference]: Start difference. First operand 958 states and 1399 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 22:46:38,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:46:38,217 INFO L93 Difference]: Finished difference Result 1905 states and 2803 transitions. [2022-07-19 22:46:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 22:46:38,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-07-19 22:46:38,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:46:38,223 INFO L225 Difference]: With dead ends: 1905 [2022-07-19 22:46:38,223 INFO L226 Difference]: Without dead ends: 986 [2022-07-19 22:46:38,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:46:38,227 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 365 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:46:38,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 2697 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 22:46:38,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2022-07-19 22:46:38,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 958. [2022-07-19 22:46:38,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 708 states have (on average 1.4011299435028248) internal successors, (992), 731 states have internal predecessors, (992), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-07-19 22:46:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1396 transitions. [2022-07-19 22:46:38,297 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1396 transitions. Word has length 109 [2022-07-19 22:46:38,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:46:38,298 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1396 transitions. [2022-07-19 22:46:38,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 22:46:38,298 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1396 transitions. [2022-07-19 22:46:38,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-19 22:46:38,303 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:46:38,303 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 22:46:38,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 22:46:38,304 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:46:38,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:46:38,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1938120389, now seen corresponding path program 1 times [2022-07-19 22:46:38,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:46:38,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073252923] [2022-07-19 22:46:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:46:38,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:46:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:38,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:46:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:38,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:38,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 22:46:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:38,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:46:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:38,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:38,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:46:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:38,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 22:46:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:38,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 22:46:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:38,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 22:46:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:38,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 22:46:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:38,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 22:46:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:38,508 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 22:46:38,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:46:38,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073252923] [2022-07-19 22:46:38,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073252923] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:46:38,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461350242] [2022-07-19 22:46:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:46:38,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:46:38,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:46:38,515 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) [2022-07-19 22:46:38,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 22:46:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:38,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 22:46:38,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:46:39,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 22:46:39,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:46:39,346 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 22:46:39,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461350242] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:46:39,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:46:39,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 11 [2022-07-19 22:46:39,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031815463] [2022-07-19 22:46:39,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:46:39,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 22:46:39,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:46:39,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 22:46:39,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:46:39,350 INFO L87 Difference]: Start difference. First operand 958 states and 1396 transitions. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-19 22:46:44,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:46:44,500 INFO L93 Difference]: Finished difference Result 3941 states and 6074 transitions. [2022-07-19 22:46:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 22:46:44,501 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 112 [2022-07-19 22:46:44,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:46:44,518 INFO L225 Difference]: With dead ends: 3941 [2022-07-19 22:46:44,518 INFO L226 Difference]: Without dead ends: 3022 [2022-07-19 22:46:44,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:46:44,523 INFO L413 NwaCegarLoop]: 1914 mSDtfsCounter, 4282 mSDsluCounter, 7208 mSDsCounter, 0 mSdLazyCounter, 6886 mSolverCounterSat, 1359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4695 SdHoareTripleChecker+Valid, 9122 SdHoareTripleChecker+Invalid, 8245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1359 IncrementalHoareTripleChecker+Valid, 6886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:46:44,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4695 Valid, 9122 Invalid, 8245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1359 Valid, 6886 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-19 22:46:44,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2022-07-19 22:46:44,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 965. [2022-07-19 22:46:44,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 715 states have (on average 1.4) internal successors, (1001), 738 states have internal predecessors, (1001), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-07-19 22:46:44,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1405 transitions. [2022-07-19 22:46:44,666 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1405 transitions. Word has length 112 [2022-07-19 22:46:44,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:46:44,667 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1405 transitions. [2022-07-19 22:46:44,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-19 22:46:44,667 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1405 transitions. [2022-07-19 22:46:44,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-19 22:46:44,671 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:46:44,671 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:46:44,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 22:46:44,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:46:44,889 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:46:44,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:46:44,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1506190142, now seen corresponding path program 1 times [2022-07-19 22:46:44,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:46:44,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213689948] [2022-07-19 22:46:44,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:46:44,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:46:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:45,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:46:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:45,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:45,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 22:46:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:45,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:46:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:45,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:46:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:45,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:46:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:45,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 22:46:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:45,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 22:46:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:45,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 22:46:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:45,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 22:46:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:45,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 22:46:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:45,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:46:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:46:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 22:46:45,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:46:45,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213689948] [2022-07-19 22:46:45,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213689948] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:46:45,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296276652] [2022-07-19 22:46:45,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:46:45,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:46:45,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:46:45,222 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) [2022-07-19 22:46:45,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process