./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 f4b24e32 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-?-f4b24e3 [2022-07-13 23:23:45,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 23:23:45,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 23:23:45,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 23:23:45,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 23:23:45,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 23:23:45,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 23:23:45,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 23:23:45,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 23:23:45,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 23:23:45,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 23:23:45,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 23:23:45,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 23:23:45,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 23:23:45,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 23:23:45,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 23:23:45,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 23:23:45,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 23:23:45,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 23:23:45,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 23:23:45,546 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 23:23:45,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 23:23:45,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 23:23:45,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 23:23:45,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 23:23:45,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 23:23:45,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 23:23:45,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 23:23:45,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 23:23:45,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 23:23:45,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 23:23:45,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 23:23:45,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 23:23:45,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 23:23:45,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 23:23:45,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 23:23:45,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 23:23:45,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 23:23:45,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 23:23:45,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 23:23:45,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 23:23:45,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 23:23:45,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 23:23:45,599 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 23:23:45,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 23:23:45,600 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 23:23:45,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 23:23:45,601 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 23:23:45,601 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 23:23:45,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 23:23:45,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 23:23:45,602 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 23:23:45,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 23:23:45,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 23:23:45,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 23:23:45,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 23:23:45,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 23:23:45,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 23:23:45,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 23:23:45,604 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 23:23:45,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 23:23:45,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 23:23:45,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 23:23:45,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 23:23:45,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:23:45,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 23:23:45,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 23:23:45,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 23:23:45,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 23:23:45,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 23:23:45,607 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 23:23:45,608 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 23:23:45,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 23:23:45,608 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb [2022-07-13 23:23:45,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 23:23:45,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 23:23:45,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 23:23:45,897 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 23:23:45,897 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 23:23:45,899 INFO L432 ainManager$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 [2022-07-13 23:23:45,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eef8d4c5f/e6c14a4088874067bd1172ac6eeb7b09/FLAG9b2255ad1 [2022-07-13 23:23:46,614 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 23:23:46,614 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 [2022-07-13 23:23:46,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eef8d4c5f/e6c14a4088874067bd1172ac6eeb7b09/FLAG9b2255ad1 [2022-07-13 23:23:46,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eef8d4c5f/e6c14a4088874067bd1172ac6eeb7b09 [2022-07-13 23:23:46,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 23:23:46,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 23:23:46,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 23:23:46,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 23:23:46,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 23:23:46,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:23:46" (1/1) ... [2022-07-13 23:23:46,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1be8f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:46, skipping insertion in model container [2022-07-13 23:23:46,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:23:46" (1/1) ... [2022-07-13 23:23:46,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 23:23:46,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 23:23:47,966 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] [2022-07-13 23:23:47,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:23:48,010 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 23:23:48,318 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] [2022-07-13 23:23:48,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:23:48,417 INFO L208 MainTranslator]: Completed translation [2022-07-13 23:23:48,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:48 WrapperNode [2022-07-13 23:23:48,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 23:23:48,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 23:23:48,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 23:23:48,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 23:23:48,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:48" (1/1) ... [2022-07-13 23:23:48,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:48" (1/1) ... [2022-07-13 23:23:48,610 INFO L137 Inliner]: procedures = 157, calls = 812, calls flagged for inlining = 80, calls inlined = 79, statements flattened = 2787 [2022-07-13 23:23:48,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 23:23:48,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 23:23:48,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 23:23:48,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 23:23:48,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:48" (1/1) ... [2022-07-13 23:23:48,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:48" (1/1) ... [2022-07-13 23:23:48,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:48" (1/1) ... [2022-07-13 23:23:48,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:48" (1/1) ... [2022-07-13 23:23:48,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:48" (1/1) ... [2022-07-13 23:23:48,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:48" (1/1) ... [2022-07-13 23:23:48,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:48" (1/1) ... [2022-07-13 23:23:48,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 23:23:48,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 23:23:48,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 23:23:48,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 23:23:48,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:48" (1/1) ... [2022-07-13 23:23:48,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:23:48,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:23:48,877 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) [2022-07-13 23:23:48,896 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 [2022-07-13 23:23:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-13 23:23:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-13 23:23:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-13 23:23:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-13 23:23:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 23:23:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-07-13 23:23:48,918 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-07-13 23:23:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-07-13 23:23:48,918 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-07-13 23:23:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-07-13 23:23:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-07-13 23:23:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-13 23:23:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-13 23:23:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-13 23:23:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-13 23:23:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-13 23:23:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-13 23:23:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-13 23:23:48,920 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-13 23:23:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2022-07-13 23:23:48,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2022-07-13 23:23:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-07-13 23:23:48,920 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-07-13 23:23:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-13 23:23:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-13 23:23:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-07-13 23:23:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-07-13 23:23:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 23:23:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-07-13 23:23:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-07-13 23:23:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-07-13 23:23:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-07-13 23:23:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-13 23:23:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-13 23:23:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-13 23:23:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-13 23:23:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-13 23:23:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-13 23:23:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-07-13 23:23:48,923 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-07-13 23:23:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 23:23:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-07-13 23:23:48,923 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-07-13 23:23:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-07-13 23:23:48,923 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-07-13 23:23:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 23:23:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-07-13 23:23:48,924 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-07-13 23:23:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-07-13 23:23:48,924 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-07-13 23:23:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 23:23:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 23:23:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-13 23:23:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-13 23:23:48,925 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-13 23:23:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 23:23:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-07-13 23:23:48,927 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-07-13 23:23:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-13 23:23:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-13 23:23:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-13 23:23:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-13 23:23:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-07-13 23:23:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-07-13 23:23:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-07-13 23:23:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-07-13 23:23:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 23:23:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-07-13 23:23:48,929 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-07-13 23:23:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 23:23:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-07-13 23:23:48,929 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-07-13 23:23:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-07-13 23:23:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-07-13 23:23:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-13 23:23:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-13 23:23:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-13 23:23:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-13 23:23:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-13 23:23:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-13 23:23:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-13 23:23:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-13 23:23:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-13 23:23:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-13 23:23:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-13 23:23:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-13 23:23:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-13 23:23:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-13 23:23:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 23:23:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-13 23:23:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-13 23:23:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-13 23:23:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-13 23:23:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-07-13 23:23:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-07-13 23:23:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-07-13 23:23:48,934 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-07-13 23:23:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-13 23:23:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 23:23:48,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 23:23:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-07-13 23:23:48,935 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-07-13 23:23:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-13 23:23:48,936 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-13 23:23:49,368 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 23:23:49,370 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 23:23:51,789 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 23:23:51,809 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 23:23:51,809 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 23:23:51,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:23:51 BoogieIcfgContainer [2022-07-13 23:23:51,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 23:23:51,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 23:23:51,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 23:23:51,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 23:23:51,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:23:46" (1/3) ... [2022-07-13 23:23:51,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbf54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:23:51, skipping insertion in model container [2022-07-13 23:23:51,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:48" (2/3) ... [2022-07-13 23:23:51,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbf54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:23:51, skipping insertion in model container [2022-07-13 23:23:51,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:23:51" (3/3) ... [2022-07-13 23:23:51,827 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-07-13 23:23:51,841 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 23:23:51,842 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 23:23:51,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 23:23:51,907 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@216a0dd4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@22061912 [2022-07-13 23:23:51,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 23:23:51,916 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) [2022-07-13 23:23:51,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-13 23:23:51,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:23:51,931 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] [2022-07-13 23:23:51,931 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:23:51,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:23:51,936 INFO L85 PathProgramCache]: Analyzing trace with hash -579474216, now seen corresponding path program 1 times [2022-07-13 23:23:51,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:23:51,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273301166] [2022-07-13 23:23:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:23:51,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:23:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:52,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 23:23:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:52,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:23:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:52,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 23:23:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:52,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 23:23:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:52,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:23:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:52,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 23:23:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:52,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 23:23:52,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:23:52,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273301166] [2022-07-13 23:23:52,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273301166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:23:52,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:23:52,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:23:52,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462212027] [2022-07-13 23:23:52,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:23:52,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:23:52,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:23:52,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:23:52,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:23:52,400 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) [2022-07-13 23:23:53,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:23:53,482 INFO L93 Difference]: Finished difference Result 1950 states and 2923 transitions. [2022-07-13 23:23:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:23:53,485 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 [2022-07-13 23:23:53,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:23:53,502 INFO L225 Difference]: With dead ends: 1950 [2022-07-13 23:23:53,502 INFO L226 Difference]: Without dead ends: 947 [2022-07-13 23:23:53,511 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 [2022-07-13 23:23:53,513 INFO L413 NwaCegarLoop]: 1374 mSDtfsCounter, 1573 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 23:23:53,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 1980 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 23:23:53,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-07-13 23:23:53,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 929. [2022-07-13 23:23:53,626 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) [2022-07-13 23:23:53,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1371 transitions. [2022-07-13 23:23:53,636 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1371 transitions. Word has length 59 [2022-07-13 23:23:53,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:23:53,636 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1371 transitions. [2022-07-13 23:23:53,637 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) [2022-07-13 23:23:53,637 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1371 transitions. [2022-07-13 23:23:53,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-13 23:23:53,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:23:53,644 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] [2022-07-13 23:23:53,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 23:23:53,645 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:23:53,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:23:53,646 INFO L85 PathProgramCache]: Analyzing trace with hash -155827494, now seen corresponding path program 1 times [2022-07-13 23:23:53,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:23:53,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243807160] [2022-07-13 23:23:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:23:53,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:23:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:53,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 23:23:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:53,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:23:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:53,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 23:23:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:53,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 23:23:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:53,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:23:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 23:23:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 23:23:53,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:23:53,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243807160] [2022-07-13 23:23:53,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243807160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:23:53,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:23:53,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 23:23:53,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869933747] [2022-07-13 23:23:53,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:23:53,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 23:23:53,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:23:53,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 23:23:53,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:23:53,819 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) [2022-07-13 23:23:55,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:23:55,588 INFO L93 Difference]: Finished difference Result 1859 states and 2750 transitions. [2022-07-13 23:23:55,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:23:55,589 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 [2022-07-13 23:23:55,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:23:55,595 INFO L225 Difference]: With dead ends: 1859 [2022-07-13 23:23:55,596 INFO L226 Difference]: Without dead ends: 947 [2022-07-13 23:23:55,599 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 [2022-07-13 23:23:55,600 INFO L413 NwaCegarLoop]: 1320 mSDtfsCounter, 372 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 3519 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 23:23:55,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 3519 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 23:23:55,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-07-13 23:23:55,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 929. [2022-07-13 23:23:55,635 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) [2022-07-13 23:23:55,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1370 transitions. [2022-07-13 23:23:55,641 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1370 transitions. Word has length 59 [2022-07-13 23:23:55,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:23:55,642 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1370 transitions. [2022-07-13 23:23:55,642 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) [2022-07-13 23:23:55,642 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1370 transitions. [2022-07-13 23:23:55,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 23:23:55,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:23:55,644 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] [2022-07-13 23:23:55,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 23:23:55,645 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:23:55,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:23:55,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1779924711, now seen corresponding path program 1 times [2022-07-13 23:23:55,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:23:55,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625496616] [2022-07-13 23:23:55,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:23:55,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:23:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 23:23:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:55,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:23:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:55,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 23:23:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:55,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 23:23:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:55,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:23:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:55,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 23:23:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 23:23:55,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:23:55,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625496616] [2022-07-13 23:23:55,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625496616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:23:55,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:23:55,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 23:23:55,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736078547] [2022-07-13 23:23:55,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:23:55,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 23:23:55,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:23:55,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 23:23:55,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:23:55,762 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) [2022-07-13 23:23:57,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:23:57,692 INFO L93 Difference]: Finished difference Result 1461 states and 2231 transitions. [2022-07-13 23:23:57,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 23:23:57,693 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 [2022-07-13 23:23:57,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:23:57,702 INFO L225 Difference]: With dead ends: 1461 [2022-07-13 23:23:57,703 INFO L226 Difference]: Without dead ends: 1459 [2022-07-13 23:23:57,705 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 [2022-07-13 23:23:57,709 INFO L413 NwaCegarLoop]: 2140 mSDtfsCounter, 1296 mSDsluCounter, 3179 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 5319 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 23:23:57,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 5319 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 23:23:57,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2022-07-13 23:23:57,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 931. [2022-07-13 23:23:57,772 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) [2022-07-13 23:23:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1372 transitions. [2022-07-13 23:23:57,776 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1372 transitions. Word has length 62 [2022-07-13 23:23:57,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:23:57,778 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 1372 transitions. [2022-07-13 23:23:57,779 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) [2022-07-13 23:23:57,779 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1372 transitions. [2022-07-13 23:23:57,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-13 23:23:57,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:23:57,782 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] [2022-07-13 23:23:57,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 23:23:57,783 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:23:57,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:23:57,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2124530077, now seen corresponding path program 1 times [2022-07-13 23:23:57,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:23:57,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806324392] [2022-07-13 23:23:57,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:23:57,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:23:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:57,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 23:23:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:57,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:23:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:57,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 23:23:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:57,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 23:23:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:57,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:23:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:57,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 23:23:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:57,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 23:23:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:57,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 23:23:57,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:23:57,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806324392] [2022-07-13 23:23:57,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806324392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:23:57,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:23:57,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 23:23:57,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211625843] [2022-07-13 23:23:57,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:23:57,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 23:23:57,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:23:57,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 23:23:57,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:23:57,983 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) [2022-07-13 23:23:59,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:23:59,960 INFO L93 Difference]: Finished difference Result 2375 states and 3581 transitions. [2022-07-13 23:23:59,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:23:59,961 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 [2022-07-13 23:23:59,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:23:59,970 INFO L225 Difference]: With dead ends: 2375 [2022-07-13 23:23:59,971 INFO L226 Difference]: Without dead ends: 1463 [2022-07-13 23:23:59,977 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 [2022-07-13 23:23:59,985 INFO L413 NwaCegarLoop]: 1816 mSDtfsCounter, 2025 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2299 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 23:23:59,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2299 Valid, 3403 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 23:23:59,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2022-07-13 23:24:00,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 932. [2022-07-13 23:24:00,044 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) [2022-07-13 23:24:00,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1373 transitions. [2022-07-13 23:24:00,049 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1373 transitions. Word has length 72 [2022-07-13 23:24:00,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:24:00,051 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1373 transitions. [2022-07-13 23:24:00,051 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) [2022-07-13 23:24:00,051 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1373 transitions. [2022-07-13 23:24:00,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-13 23:24:00,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:24:00,057 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] [2022-07-13 23:24:00,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 23:24:00,057 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:24:00,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:24:00,058 INFO L85 PathProgramCache]: Analyzing trace with hash -45216834, now seen corresponding path program 1 times [2022-07-13 23:24:00,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:24:00,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708015193] [2022-07-13 23:24:00,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:00,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:24:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:00,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 23:24:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:00,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:00,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 23:24:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:00,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 23:24:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:00,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:00,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 23:24:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:00,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 23:24:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 23:24:00,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:24:00,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708015193] [2022-07-13 23:24:00,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708015193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:24:00,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:24:00,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 23:24:00,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506953876] [2022-07-13 23:24:00,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:24:00,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:24:00,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:24:00,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:24:00,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 23:24:00,231 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) [2022-07-13 23:24:03,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:24:03,381 INFO L93 Difference]: Finished difference Result 2242 states and 3484 transitions. [2022-07-13 23:24:03,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 23:24:03,382 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 [2022-07-13 23:24:03,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:24:03,393 INFO L225 Difference]: With dead ends: 2242 [2022-07-13 23:24:03,394 INFO L226 Difference]: Without dead ends: 2240 [2022-07-13 23:24:03,396 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 [2022-07-13 23:24:03,397 INFO L413 NwaCegarLoop]: 2581 mSDtfsCounter, 2635 mSDsluCounter, 5542 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 817 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2831 SdHoareTripleChecker+Valid, 8123 SdHoareTripleChecker+Invalid, 3484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 817 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 23:24:03,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2831 Valid, 8123 Invalid, 3484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [817 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 23:24:03,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2022-07-13 23:24:03,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 934. [2022-07-13 23:24:03,471 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) [2022-07-13 23:24:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1376 transitions. [2022-07-13 23:24:03,476 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1376 transitions. Word has length 74 [2022-07-13 23:24:03,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:24:03,477 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 1376 transitions. [2022-07-13 23:24:03,477 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) [2022-07-13 23:24:03,478 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1376 transitions. [2022-07-13 23:24:03,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 23:24:03,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:24:03,482 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] [2022-07-13 23:24:03,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 23:24:03,483 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:24:03,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:24:03,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1411070669, now seen corresponding path program 1 times [2022-07-13 23:24:03,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:24:03,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060956099] [2022-07-13 23:24:03,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:03,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:24:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:03,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 23:24:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:03,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:03,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 23:24:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:03,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 23:24:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:03,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:03,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 23:24:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:03,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 23:24:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 23:24:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:03,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 23:24:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:03,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 23:24:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:03,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 23:24:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 23:24:03,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:24:03,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060956099] [2022-07-13 23:24:03,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060956099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:24:03,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:24:03,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:24:03,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142421154] [2022-07-13 23:24:03,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:24:03,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:24:03,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:24:03,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:24:03,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:24:03,687 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) [2022-07-13 23:24:04,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:24:04,750 INFO L93 Difference]: Finished difference Result 1896 states and 2786 transitions. [2022-07-13 23:24:04,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:24:04,751 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 [2022-07-13 23:24:04,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:24:04,756 INFO L225 Difference]: With dead ends: 1896 [2022-07-13 23:24:04,756 INFO L226 Difference]: Without dead ends: 981 [2022-07-13 23:24:04,760 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 [2022-07-13 23:24:04,761 INFO L413 NwaCegarLoop]: 1320 mSDtfsCounter, 1481 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-07-13 23:24:04,761 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] [2022-07-13 23:24:04,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-07-13 23:24:04,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 954. [2022-07-13 23:24:04,833 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) [2022-07-13 23:24:04,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1394 transitions. [2022-07-13 23:24:04,839 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1394 transitions. Word has length 104 [2022-07-13 23:24:04,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:24:04,839 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1394 transitions. [2022-07-13 23:24:04,840 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) [2022-07-13 23:24:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1394 transitions. [2022-07-13 23:24:04,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 23:24:04,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:24:04,845 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] [2022-07-13 23:24:04,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 23:24:04,845 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:24:04,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:24:04,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1281162515, now seen corresponding path program 1 times [2022-07-13 23:24:04,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:24:04,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453335766] [2022-07-13 23:24:04,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:04,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:24:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:04,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 23:24:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:04,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:04,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 23:24:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:04,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 23:24:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:05,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:05,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 23:24:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 23:24:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:05,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 23:24:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:05,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 23:24:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:05,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 23:24:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:05,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 23:24:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:05,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 23:24:05,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:24:05,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453335766] [2022-07-13 23:24:05,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453335766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:24:05,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:24:05,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 23:24:05,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234020151] [2022-07-13 23:24:05,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:24:05,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 23:24:05,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:24:05,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 23:24:05,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:24:05,063 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) [2022-07-13 23:24:07,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:24:07,142 INFO L93 Difference]: Finished difference Result 2412 states and 3616 transitions. [2022-07-13 23:24:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:24:07,143 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 [2022-07-13 23:24:07,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:24:07,152 INFO L225 Difference]: With dead ends: 2412 [2022-07-13 23:24:07,152 INFO L226 Difference]: Without dead ends: 1497 [2022-07-13 23:24:07,156 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 [2022-07-13 23:24:07,157 INFO L413 NwaCegarLoop]: 1877 mSDtfsCounter, 2123 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2394 SdHoareTripleChecker+Valid, 3506 SdHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 23:24:07,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2394 Valid, 3506 Invalid, 1957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 23:24:07,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2022-07-13 23:24:07,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 958. [2022-07-13 23:24:07,234 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) [2022-07-13 23:24:07,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1399 transitions. [2022-07-13 23:24:07,240 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1399 transitions. Word has length 106 [2022-07-13 23:24:07,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:24:07,240 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1399 transitions. [2022-07-13 23:24:07,240 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) [2022-07-13 23:24:07,241 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1399 transitions. [2022-07-13 23:24:07,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 23:24:07,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:24:07,246 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] [2022-07-13 23:24:07,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 23:24:07,246 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:24:07,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:24:07,247 INFO L85 PathProgramCache]: Analyzing trace with hash 10856094, now seen corresponding path program 1 times [2022-07-13 23:24:07,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:24:07,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987441526] [2022-07-13 23:24:07,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:07,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:24:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:07,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 23:24:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:07,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 23:24:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:07,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 23:24:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:07,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:07,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 23:24:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:07,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 23:24:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:07,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 23:24:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:07,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 23:24:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:07,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 23:24:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:07,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 23:24:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 23:24:07,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:24:07,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987441526] [2022-07-13 23:24:07,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987441526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:24:07,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:24:07,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:24:07,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766868057] [2022-07-13 23:24:07,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:24:07,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:24:07,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:24:07,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:24:07,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:24:07,400 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) [2022-07-13 23:24:08,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:24:08,516 INFO L93 Difference]: Finished difference Result 1905 states and 2803 transitions. [2022-07-13 23:24:08,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:24:08,517 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 [2022-07-13 23:24:08,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:24:08,522 INFO L225 Difference]: With dead ends: 1905 [2022-07-13 23:24:08,523 INFO L226 Difference]: Without dead ends: 986 [2022-07-13 23:24:08,526 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 [2022-07-13 23:24:08,527 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 365 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:24:08,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 2697 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 23:24:08,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2022-07-13 23:24:08,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 958. [2022-07-13 23:24:08,598 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) [2022-07-13 23:24:08,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1396 transitions. [2022-07-13 23:24:08,603 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1396 transitions. Word has length 109 [2022-07-13 23:24:08,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:24:08,604 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1396 transitions. [2022-07-13 23:24:08,604 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) [2022-07-13 23:24:08,604 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1396 transitions. [2022-07-13 23:24:08,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 23:24:08,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:24:08,609 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] [2022-07-13 23:24:08,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 23:24:08,610 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:24:08,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:24:08,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1938120389, now seen corresponding path program 1 times [2022-07-13 23:24:08,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:24:08,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291645262] [2022-07-13 23:24:08,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:08,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:24:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:08,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 23:24:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:08,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:08,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 23:24:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:08,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 23:24:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:08,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:08,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 23:24:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:08,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 23:24:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:08,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 23:24:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:08,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 23:24:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:08,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 23:24:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:08,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 23:24:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 23:24:08,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:24:08,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291645262] [2022-07-13 23:24:08,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291645262] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:24:08,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354022290] [2022-07-13 23:24:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:08,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:24:08,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:24:08,831 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) [2022-07-13 23:24:08,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 23:24:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:09,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 23:24:09,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:24:09,481 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 23:24:09,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 23:24:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 23:24:09,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354022290] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 23:24:09,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 23:24:09,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 11 [2022-07-13 23:24:09,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668764560] [2022-07-13 23:24:09,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 23:24:09,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 23:24:09,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:24:09,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 23:24:09,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-07-13 23:24:09,618 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) [2022-07-13 23:24:15,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:24:15,373 INFO L93 Difference]: Finished difference Result 3941 states and 6074 transitions. [2022-07-13 23:24:15,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 23:24:15,381 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 [2022-07-13 23:24:15,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:24:15,404 INFO L225 Difference]: With dead ends: 3941 [2022-07-13 23:24:15,405 INFO L226 Difference]: Without dead ends: 3022 [2022-07-13 23:24:15,410 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 [2022-07-13 23:24:15,410 INFO L413 NwaCegarLoop]: 1916 mSDtfsCounter, 4282 mSDsluCounter, 7210 mSDsCounter, 0 mSdLazyCounter, 6876 mSolverCounterSat, 1361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4691 SdHoareTripleChecker+Valid, 9126 SdHoareTripleChecker+Invalid, 8237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1361 IncrementalHoareTripleChecker+Valid, 6876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-13 23:24:15,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4691 Valid, 9126 Invalid, 8237 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1361 Valid, 6876 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-13 23:24:15,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2022-07-13 23:24:15,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 965. [2022-07-13 23:24:15,596 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) [2022-07-13 23:24:15,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1405 transitions. [2022-07-13 23:24:15,600 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1405 transitions. Word has length 112 [2022-07-13 23:24:15,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:24:15,601 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1405 transitions. [2022-07-13 23:24:15,601 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) [2022-07-13 23:24:15,601 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1405 transitions. [2022-07-13 23:24:15,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-13 23:24:15,608 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:24:15,609 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] [2022-07-13 23:24:15,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 23:24:15,835 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 [2022-07-13 23:24:15,836 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:24:15,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:24:15,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1506190142, now seen corresponding path program 1 times [2022-07-13 23:24:15,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:24:15,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526583528] [2022-07-13 23:24:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:15,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:24:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:16,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 23:24:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:16,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:16,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 23:24:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:16,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 23:24:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:16,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:16,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 23:24:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:16,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 23:24:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:16,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 23:24:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:16,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 23:24:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:16,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 23:24:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:16,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 23:24:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:16,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 23:24:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 23:24:16,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:24:16,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526583528] [2022-07-13 23:24:16,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526583528] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:24:16,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558652549] [2022-07-13 23:24:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:16,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:24:16,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:24:16,196 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) [2022-07-13 23:24:16,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process