./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 ae007674 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-dev-ae00767 [2021-12-28 03:40:40,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:40:40,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:40:40,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:40:40,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:40:40,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:40:40,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:40:40,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:40:40,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:40:40,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:40:40,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:40:40,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:40:40,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:40:40,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:40:40,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:40:40,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:40:40,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:40:40,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:40:40,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:40:40,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:40:40,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:40:40,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:40:40,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:40:40,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:40:40,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:40:40,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:40:40,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:40:40,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:40:40,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:40:40,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:40:40,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:40:40,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:40:40,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:40:40,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:40:40,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:40:40,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:40:40,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:40:40,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:40:40,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:40:40,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:40:40,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:40:40,577 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:40:40,601 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:40:40,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:40:40,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:40:40,602 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:40:40,603 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:40:40,603 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:40:40,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:40:40,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:40:40,604 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:40:40,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:40:40,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:40:40,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:40:40,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:40:40,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:40:40,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:40:40,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:40:40,606 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:40:40,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:40:40,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:40:40,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:40:40,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:40:40,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:40:40,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:40:40,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:40:40,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:40:40,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:40:40,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:40:40,607 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:40:40,607 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:40:40,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:40:40,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb [2021-12-28 03:40:40,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:40:40,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:40:40,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:40:40,887 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:40:40,888 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:40:40,889 INFO L432 ainManager$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 [2021-12-28 03:40:40,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/106f0e78f/79bf8fa0cc574ef5a60300421f7ca7ac/FLAG8b2deedc8 [2021-12-28 03:40:41,548 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:40:41,549 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 [2021-12-28 03:40:41,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/106f0e78f/79bf8fa0cc574ef5a60300421f7ca7ac/FLAG8b2deedc8 [2021-12-28 03:40:41,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/106f0e78f/79bf8fa0cc574ef5a60300421f7ca7ac [2021-12-28 03:40:41,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:40:41,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:40:41,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:40:41,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:40:41,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:40:41,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:40:41" (1/1) ... [2021-12-28 03:40:41,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6749262a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:41, skipping insertion in model container [2021-12-28 03:40:41,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:40:41" (1/1) ... [2021-12-28 03:40:41,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:40:42,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:40:42,880 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] [2021-12-28 03:40:42,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:40:42,908 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:40:43,103 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] [2021-12-28 03:40:43,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:40:43,246 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:40:43,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:43 WrapperNode [2021-12-28 03:40:43,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:40:43,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:40:43,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:40:43,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:40:43,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:43" (1/1) ... [2021-12-28 03:40:43,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:43" (1/1) ... [2021-12-28 03:40:43,411 INFO L137 Inliner]: procedures = 157, calls = 812, calls flagged for inlining = 80, calls inlined = 79, statements flattened = 2776 [2021-12-28 03:40:43,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:40:43,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:40:43,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:40:43,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:40:43,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:43" (1/1) ... [2021-12-28 03:40:43,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:43" (1/1) ... [2021-12-28 03:40:43,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:43" (1/1) ... [2021-12-28 03:40:43,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:43" (1/1) ... [2021-12-28 03:40:43,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:43" (1/1) ... [2021-12-28 03:40:43,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:43" (1/1) ... [2021-12-28 03:40:43,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:43" (1/1) ... [2021-12-28 03:40:43,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:40:43,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:40:43,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:40:43,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:40:43,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:43" (1/1) ... [2021-12-28 03:40:43,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:40:43,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:40:43,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:40:43,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:40:43,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:40:43,651 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-28 03:40:43,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:40:43,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:40:43,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:40:43,652 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-12-28 03:40:43,652 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-12-28 03:40:43,652 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-28 03:40:43,652 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-28 03:40:43,652 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2021-12-28 03:40:43,652 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2021-12-28 03:40:43,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 03:40:43,653 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 03:40:43,653 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-28 03:40:43,653 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-28 03:40:43,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:40:43,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:40:43,653 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-28 03:40:43,654 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-28 03:40:43,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2021-12-28 03:40:43,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2021-12-28 03:40:43,654 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-12-28 03:40:43,654 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-12-28 03:40:43,654 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:40:43,654 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:40:43,654 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2021-12-28 03:40:43,654 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2021-12-28 03:40:43,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:40:43,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-28 03:40:43,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-28 03:40:43,655 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-12-28 03:40:43,655 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-12-28 03:40:43,655 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-28 03:40:43,655 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-28 03:40:43,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:40:43,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:40:43,656 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-28 03:40:43,656 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-28 03:40:43,656 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-12-28 03:40:43,656 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-12-28 03:40:43,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:40:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2021-12-28 03:40:43,657 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2021-12-28 03:40:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2021-12-28 03:40:43,657 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2021-12-28 03:40:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:40:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-28 03:40:43,657 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-28 03:40:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2021-12-28 03:40:43,658 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2021-12-28 03:40:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:40:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:40:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-28 03:40:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-28 03:40:43,658 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-28 03:40:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:40:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-12-28 03:40:43,659 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-12-28 03:40:43,660 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-28 03:40:43,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-28 03:40:43,660 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-28 03:40:43,660 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-28 03:40:43,660 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2021-12-28 03:40:43,660 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2021-12-28 03:40:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2021-12-28 03:40:43,661 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2021-12-28 03:40:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:40:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-12-28 03:40:43,661 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-12-28 03:40:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:40:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-12-28 03:40:43,662 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-12-28 03:40:43,662 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2021-12-28 03:40:43,662 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2021-12-28 03:40:43,662 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-28 03:40:43,662 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-28 03:40:43,662 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 03:40:43,662 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 03:40:43,662 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-28 03:40:43,663 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-28 03:40:43,663 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-28 03:40:43,663 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-28 03:40:43,663 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-28 03:40:43,663 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-28 03:40:43,663 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-28 03:40:43,663 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-28 03:40:43,663 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-28 03:40:43,663 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-28 03:40:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:40:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-28 03:40:43,664 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-28 03:40:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-28 03:40:43,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-28 03:40:43,665 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2021-12-28 03:40:43,665 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2021-12-28 03:40:43,665 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-12-28 03:40:43,665 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-12-28 03:40:43,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:40:43,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:40:43,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:40:43,666 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2021-12-28 03:40:43,666 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2021-12-28 03:40:43,667 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-28 03:40:43,667 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-28 03:40:44,332 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:40:44,343 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:40:45,972 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:40:45,981 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:40:45,982 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:40:45,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:40:45 BoogieIcfgContainer [2021-12-28 03:40:45,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:40:45,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:40:45,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:40:45,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:40:45,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:40:41" (1/3) ... [2021-12-28 03:40:45,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3940f2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:40:45, skipping insertion in model container [2021-12-28 03:40:45,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:43" (2/3) ... [2021-12-28 03:40:45,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3940f2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:40:45, skipping insertion in model container [2021-12-28 03:40:45,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:40:45" (3/3) ... [2021-12-28 03:40:45,989 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2021-12-28 03:40:45,992 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:40:45,993 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:40:46,025 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:40:46,029 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:40:46,030 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:40:46,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 964 states, 712 states have (on average 1.4297752808988764) internal successors, (1018), 739 states have internal predecessors, (1018), 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) [2021-12-28 03:40:46,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-28 03:40:46,084 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:46,085 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:40:46,090 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:46,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:46,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1312205542, now seen corresponding path program 1 times [2021-12-28 03:40:46,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:46,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004204039] [2021-12-28 03:40:46,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:46,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:46,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:46,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:46,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:40:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:46,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:40:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:46,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:46,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:40:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-28 03:40:46,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:46,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004204039] [2021-12-28 03:40:46,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004204039] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:46,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:40:46,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:40:46,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927587664] [2021-12-28 03:40:46,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:46,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:40:46,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:46,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:40:46,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:40:46,498 INFO L87 Difference]: Start difference. First operand has 964 states, 712 states have (on average 1.4297752808988764) internal successors, (1018), 739 states have internal predecessors, (1018), 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) [2021-12-28 03:40:47,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:47,272 INFO L93 Difference]: Finished difference Result 1942 states and 2905 transitions. [2021-12-28 03:40:47,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:40:47,274 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 [2021-12-28 03:40:47,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:47,287 INFO L225 Difference]: With dead ends: 1942 [2021-12-28 03:40:47,287 INFO L226 Difference]: Without dead ends: 943 [2021-12-28 03:40:47,292 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:40:47,295 INFO L933 BasicCegarLoop]: 1373 mSDtfsCounter, 1563 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:47,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1699 Valid, 1983 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 03:40:47,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2021-12-28 03:40:47,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 925. [2021-12-28 03:40:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 682 states have (on average 1.4193548387096775) internal successors, (968), 706 states have internal predecessors, (968), 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) [2021-12-28 03:40:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1366 transitions. [2021-12-28 03:40:47,376 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1366 transitions. Word has length 59 [2021-12-28 03:40:47,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:47,376 INFO L470 AbstractCegarLoop]: Abstraction has 925 states and 1366 transitions. [2021-12-28 03:40:47,377 INFO L471 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) [2021-12-28 03:40:47,377 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1366 transitions. [2021-12-28 03:40:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-28 03:40:47,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:47,379 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:40:47,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:40:47,380 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:47,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:47,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1735852264, now seen corresponding path program 1 times [2021-12-28 03:40:47,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:47,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325229875] [2021-12-28 03:40:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:47,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:47,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:47,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:47,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:40:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:40:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:47,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:47,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:40:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-28 03:40:47,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:47,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325229875] [2021-12-28 03:40:47,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325229875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:47,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:40:47,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:40:47,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294127737] [2021-12-28 03:40:47,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:47,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:40:47,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:47,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:40:47,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:40:47,475 INFO L87 Difference]: Start difference. First operand 925 states and 1366 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) [2021-12-28 03:40:48,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:48,613 INFO L93 Difference]: Finished difference Result 1851 states and 2740 transitions. [2021-12-28 03:40:48,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:40:48,613 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 [2021-12-28 03:40:48,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:48,618 INFO L225 Difference]: With dead ends: 1851 [2021-12-28 03:40:48,619 INFO L226 Difference]: Without dead ends: 943 [2021-12-28 03:40:48,621 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:40:48,622 INFO L933 BasicCegarLoop]: 1325 mSDtfsCounter, 367 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 3545 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:48,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 3545 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 03:40:48,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2021-12-28 03:40:48,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 925. [2021-12-28 03:40:48,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 682 states have (on average 1.4178885630498534) internal successors, (967), 706 states have internal predecessors, (967), 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) [2021-12-28 03:40:48,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1365 transitions. [2021-12-28 03:40:48,656 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1365 transitions. Word has length 59 [2021-12-28 03:40:48,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:48,657 INFO L470 AbstractCegarLoop]: Abstraction has 925 states and 1365 transitions. [2021-12-28 03:40:48,657 INFO L471 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) [2021-12-28 03:40:48,657 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1365 transitions. [2021-12-28 03:40:48,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-28 03:40:48,659 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:48,659 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:40:48,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:40:48,660 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:48,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:48,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1026212091, now seen corresponding path program 1 times [2021-12-28 03:40:48,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:48,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620035880] [2021-12-28 03:40:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:48,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:48,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:48,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:48,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:40:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:48,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:40:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:48,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:48,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:40:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:48,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-28 03:40:48,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:48,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620035880] [2021-12-28 03:40:48,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620035880] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:48,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:40:48,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:40:48,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614474069] [2021-12-28 03:40:48,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:48,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:40:48,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:48,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:40:48,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:40:48,770 INFO L87 Difference]: Start difference. First operand 925 states and 1365 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) [2021-12-28 03:40:49,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:49,818 INFO L93 Difference]: Finished difference Result 1457 states and 2226 transitions. [2021-12-28 03:40:49,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:40:49,819 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 [2021-12-28 03:40:49,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:49,827 INFO L225 Difference]: With dead ends: 1457 [2021-12-28 03:40:49,827 INFO L226 Difference]: Without dead ends: 1455 [2021-12-28 03:40:49,828 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:40:49,847 INFO L933 BasicCegarLoop]: 2124 mSDtfsCounter, 1291 mSDsluCounter, 3157 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 5281 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:49,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1375 Valid, 5281 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 03:40:49,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-12-28 03:40:49,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 927. [2021-12-28 03:40:49,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 684 states have (on average 1.4166666666666667) internal successors, (969), 708 states have internal predecessors, (969), 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) [2021-12-28 03:40:49,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1367 transitions. [2021-12-28 03:40:49,929 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1367 transitions. Word has length 62 [2021-12-28 03:40:49,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:49,930 INFO L470 AbstractCegarLoop]: Abstraction has 927 states and 1367 transitions. [2021-12-28 03:40:49,931 INFO L471 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) [2021-12-28 03:40:49,931 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1367 transitions. [2021-12-28 03:40:49,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-28 03:40:49,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:49,932 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:40:49,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:40:49,933 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:49,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:49,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1878108753, now seen corresponding path program 1 times [2021-12-28 03:40:49,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:49,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901476484] [2021-12-28 03:40:49,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:49,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:50,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:50,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:50,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:40:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:50,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:40:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:50,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:50,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:40:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:50,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:40:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:50,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-28 03:40:50,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:50,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901476484] [2021-12-28 03:40:50,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901476484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:50,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:40:50,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:40:50,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951008213] [2021-12-28 03:40:50,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:50,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:40:50,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:50,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:40:50,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:40:50,053 INFO L87 Difference]: Start difference. First operand 927 states and 1367 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) [2021-12-28 03:40:51,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:51,595 INFO L93 Difference]: Finished difference Result 2367 states and 3571 transitions. [2021-12-28 03:40:51,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:40:51,595 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 [2021-12-28 03:40:51,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:51,602 INFO L225 Difference]: With dead ends: 2367 [2021-12-28 03:40:51,602 INFO L226 Difference]: Without dead ends: 1459 [2021-12-28 03:40:51,605 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:40:51,605 INFO L933 BasicCegarLoop]: 1803 mSDtfsCounter, 2187 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2462 SdHoareTripleChecker+Valid, 3383 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:51,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2462 Valid, 3383 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 03:40:51,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2021-12-28 03:40:51,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 928. [2021-12-28 03:40:51,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 685 states have (on average 1.416058394160584) internal successors, (970), 709 states have internal predecessors, (970), 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) [2021-12-28 03:40:51,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1368 transitions. [2021-12-28 03:40:51,645 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1368 transitions. Word has length 72 [2021-12-28 03:40:51,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:51,645 INFO L470 AbstractCegarLoop]: Abstraction has 928 states and 1368 transitions. [2021-12-28 03:40:51,645 INFO L471 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) [2021-12-28 03:40:51,645 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1368 transitions. [2021-12-28 03:40:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-28 03:40:51,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:51,647 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:40:51,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:40:51,648 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:51,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:51,648 INFO L85 PathProgramCache]: Analyzing trace with hash 45860082, now seen corresponding path program 1 times [2021-12-28 03:40:51,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:51,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363412575] [2021-12-28 03:40:51,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:51,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:51,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:51,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:51,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:40:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:51,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:40:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:51,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:51,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:40:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:51,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 03:40:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-28 03:40:51,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:51,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363412575] [2021-12-28 03:40:51,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363412575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:51,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:40:51,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:40:51,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924062457] [2021-12-28 03:40:51,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:51,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:40:51,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:51,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:40:51,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:40:51,760 INFO L87 Difference]: Start difference. First operand 928 states and 1368 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) [2021-12-28 03:40:54,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:54,077 INFO L93 Difference]: Finished difference Result 2238 states and 3479 transitions. [2021-12-28 03:40:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:40:54,078 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 [2021-12-28 03:40:54,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:54,086 INFO L225 Difference]: With dead ends: 2238 [2021-12-28 03:40:54,086 INFO L226 Difference]: Without dead ends: 2236 [2021-12-28 03:40:54,088 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:40:54,089 INFO L933 BasicCegarLoop]: 2520 mSDtfsCounter, 2700 mSDsluCounter, 5443 mSDsCounter, 0 mSdLazyCounter, 2652 mSolverCounterSat, 819 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2900 SdHoareTripleChecker+Valid, 7963 SdHoareTripleChecker+Invalid, 3471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 819 IncrementalHoareTripleChecker+Valid, 2652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:54,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2900 Valid, 7963 Invalid, 3471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [819 Valid, 2652 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-28 03:40:54,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2021-12-28 03:40:54,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 930. [2021-12-28 03:40:54,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 686 states have (on average 1.4154518950437318) internal successors, (971), 709 states have internal predecessors, (971), 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) [2021-12-28 03:40:54,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1371 transitions. [2021-12-28 03:40:54,147 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1371 transitions. Word has length 74 [2021-12-28 03:40:54,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:54,147 INFO L470 AbstractCegarLoop]: Abstraction has 930 states and 1371 transitions. [2021-12-28 03:40:54,148 INFO L471 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) [2021-12-28 03:40:54,148 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1371 transitions. [2021-12-28 03:40:54,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-28 03:40:54,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:54,151 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:40:54,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:40:54,151 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:54,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:54,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2045364121, now seen corresponding path program 1 times [2021-12-28 03:40:54,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:54,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021412508] [2021-12-28 03:40:54,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:54,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:54,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:54,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:54,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:40:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:54,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:40:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:54,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:54,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:40:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:54,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 03:40:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:40:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:54,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:40:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:54,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:40:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:54,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 03:40:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-28 03:40:54,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:54,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021412508] [2021-12-28 03:40:54,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021412508] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:54,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:40:54,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:40:54,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169410863] [2021-12-28 03:40:54,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:54,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:40:54,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:54,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:40:54,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:40:54,310 INFO L87 Difference]: Start difference. First operand 930 states and 1371 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) [2021-12-28 03:40:55,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:55,150 INFO L93 Difference]: Finished difference Result 1888 states and 2776 transitions. [2021-12-28 03:40:55,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:40:55,151 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 [2021-12-28 03:40:55,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:55,154 INFO L225 Difference]: With dead ends: 1888 [2021-12-28 03:40:55,154 INFO L226 Difference]: Without dead ends: 977 [2021-12-28 03:40:55,156 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:40:55,156 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 1471 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:55,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1599 Valid, 1910 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 03:40:55,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-12-28 03:40:55,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 950. [2021-12-28 03:40:55,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 700 states have (on average 1.4071428571428573) internal successors, (985), 723 states have internal predecessors, (985), 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) [2021-12-28 03:40:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1389 transitions. [2021-12-28 03:40:55,205 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1389 transitions. Word has length 104 [2021-12-28 03:40:55,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:55,206 INFO L470 AbstractCegarLoop]: Abstraction has 950 states and 1389 transitions. [2021-12-28 03:40:55,206 INFO L471 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) [2021-12-28 03:40:55,206 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1389 transitions. [2021-12-28 03:40:55,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 03:40:55,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:55,209 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:40:55,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:40:55,209 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:55,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:55,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1129591135, now seen corresponding path program 1 times [2021-12-28 03:40:55,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:55,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881511632] [2021-12-28 03:40:55,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:55,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:55,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:55,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:55,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:40:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:55,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:40:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:55,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:55,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:40:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:55,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 03:40:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:55,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:40:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:55,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:40:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:55,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 03:40:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:55,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 03:40:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:55,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-28 03:40:55,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:55,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881511632] [2021-12-28 03:40:55,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881511632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:55,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:40:55,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:40:55,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215519973] [2021-12-28 03:40:55,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:55,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:40:55,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:55,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:40:55,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:40:55,318 INFO L87 Difference]: Start difference. First operand 950 states and 1389 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) [2021-12-28 03:40:56,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:56,792 INFO L93 Difference]: Finished difference Result 2404 states and 3606 transitions. [2021-12-28 03:40:56,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:40:56,793 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 [2021-12-28 03:40:56,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:56,799 INFO L225 Difference]: With dead ends: 2404 [2021-12-28 03:40:56,799 INFO L226 Difference]: Without dead ends: 1493 [2021-12-28 03:40:56,801 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:40:56,801 INFO L933 BasicCegarLoop]: 1908 mSDtfsCounter, 2010 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:56,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2280 Valid, 3574 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 03:40:56,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2021-12-28 03:40:56,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 954. [2021-12-28 03:40:56,859 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) [2021-12-28 03:40:56,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1394 transitions. [2021-12-28 03:40:56,863 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1394 transitions. Word has length 106 [2021-12-28 03:40:56,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:56,864 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1394 transitions. [2021-12-28 03:40:56,864 INFO L471 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) [2021-12-28 03:40:56,864 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1394 transitions. [2021-12-28 03:40:56,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-28 03:40:56,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:56,867 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:40:56,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:40:56,867 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:56,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:56,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1046832022, now seen corresponding path program 1 times [2021-12-28 03:40:56,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:56,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401365209] [2021-12-28 03:40:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:56,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:56,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:56,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:40:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:56,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:40:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:56,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:56,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:40:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:56,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 03:40:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:56,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:40:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:56,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:40:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:56,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 03:40:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:56,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:40:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-28 03:40:56,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:56,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401365209] [2021-12-28 03:40:56,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401365209] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:56,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:40:56,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:40:56,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284205172] [2021-12-28 03:40:56,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:56,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:40:56,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:56,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:40:56,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:40:56,984 INFO L87 Difference]: Start difference. First operand 954 states and 1394 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) [2021-12-28 03:40:57,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:57,832 INFO L93 Difference]: Finished difference Result 1897 states and 2793 transitions. [2021-12-28 03:40:57,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:40:57,833 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 [2021-12-28 03:40:57,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:57,846 INFO L225 Difference]: With dead ends: 1897 [2021-12-28 03:40:57,846 INFO L226 Difference]: Without dead ends: 982 [2021-12-28 03:40:57,849 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:40:57,850 INFO L933 BasicCegarLoop]: 1309 mSDtfsCounter, 360 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:57,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 2698 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 03:40:57,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-12-28 03:40:57,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 954. [2021-12-28 03:40:57,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 704 states have (on average 1.4019886363636365) internal successors, (987), 727 states have internal predecessors, (987), 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) [2021-12-28 03:40:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1391 transitions. [2021-12-28 03:40:57,985 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1391 transitions. Word has length 109 [2021-12-28 03:40:57,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:57,991 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1391 transitions. [2021-12-28 03:40:57,992 INFO L471 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) [2021-12-28 03:40:57,992 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1391 transitions. [2021-12-28 03:40:58,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-28 03:40:58,014 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:58,014 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:40:58,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 03:40:58,015 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:58,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:58,015 INFO L85 PathProgramCache]: Analyzing trace with hash 433348783, now seen corresponding path program 1 times [2021-12-28 03:40:58,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:58,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987901461] [2021-12-28 03:40:58,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:58,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:58,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:58,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:58,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:40:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:58,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:40:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:58,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:58,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:40:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:58,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 03:40:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:58,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:40:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:58,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:40:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:58,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 03:40:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:58,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 03:40:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-28 03:40:58,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:58,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987901461] [2021-12-28 03:40:58,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987901461] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:40:58,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900910938] [2021-12-28 03:40:58,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:58,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:40:58,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:40:58,172 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:40:58,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:40:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:58,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 03:40:58,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:40:58,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-28 03:40:58,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:40:58,872 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-28 03:40:58,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900910938] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:40:58,872 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:40:58,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 11 [2021-12-28 03:40:58,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842110788] [2021-12-28 03:40:58,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:40:58,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 03:40:58,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:58,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 03:40:58,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:40:58,875 INFO L87 Difference]: Start difference. First operand 954 states and 1391 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) [2021-12-28 03:41:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:41:02,415 INFO L93 Difference]: Finished difference Result 3933 states and 6064 transitions. [2021-12-28 03:41:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:41:02,415 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 [2021-12-28 03:41:02,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:41:02,428 INFO L225 Difference]: With dead ends: 3933 [2021-12-28 03:41:02,428 INFO L226 Difference]: Without dead ends: 3018 [2021-12-28 03:41:02,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:41:02,432 INFO L933 BasicCegarLoop]: 1862 mSDtfsCounter, 5498 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 3875 mSolverCounterSat, 1808 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5905 SdHoareTripleChecker+Valid, 6073 SdHoareTripleChecker+Invalid, 5683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1808 IncrementalHoareTripleChecker+Valid, 3875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:41:02,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5905 Valid, 6073 Invalid, 5683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1808 Valid, 3875 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-28 03:41:02,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2021-12-28 03:41:02,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 961. [2021-12-28 03:41:02,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 711 states have (on average 1.40084388185654) internal successors, (996), 734 states have internal predecessors, (996), 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) [2021-12-28 03:41:02,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1400 transitions. [2021-12-28 03:41:02,507 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1400 transitions. Word has length 112 [2021-12-28 03:41:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:41:02,508 INFO L470 AbstractCegarLoop]: Abstraction has 961 states and 1400 transitions. [2021-12-28 03:41:02,508 INFO L471 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) [2021-12-28 03:41:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1400 transitions. [2021-12-28 03:41:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-28 03:41:02,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:41:02,511 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:41:02,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-28 03:41:02,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:41:02,733 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:41:02,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:41:02,733 INFO L85 PathProgramCache]: Analyzing trace with hash -824916650, now seen corresponding path program 1 times [2021-12-28 03:41:02,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:41:02,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966984127] [2021-12-28 03:41:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:41:02,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:41:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:02,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:41:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:02,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:41:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:02,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:41:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:02,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:41:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:02,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:41:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:41:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 03:41:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 03:41:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 03:41:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 03:41:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 03:41:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 03:41:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,035 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-28 03:41:03,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:41:03,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966984127] [2021-12-28 03:41:03,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966984127] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:41:03,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169159090] [2021-12-28 03:41:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:41:03,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:41:03,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:41:03,052 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:41:03,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:41:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-28 03:41:03,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:41:03,648 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-28 03:41:03,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:41:03,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169159090] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:41:03,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:41:03,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2021-12-28 03:41:03,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130919167] [2021-12-28 03:41:03,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:41:03,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:41:03,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:41:03,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:41:03,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:41:03,650 INFO L87 Difference]: Start difference. First operand 961 states and 1400 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-28 03:41:04,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:41:04,043 INFO L93 Difference]: Finished difference Result 2661 states and 3999 transitions. [2021-12-28 03:41:04,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:41:04,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2021-12-28 03:41:04,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:41:04,051 INFO L225 Difference]: With dead ends: 2661 [2021-12-28 03:41:04,051 INFO L226 Difference]: Without dead ends: 1739 [2021-12-28 03:41:04,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:41:04,055 INFO L933 BasicCegarLoop]: 2101 mSDtfsCounter, 1191 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 5543 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:41:04,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1301 Valid, 5543 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:41:04,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2021-12-28 03:41:04,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 963. [2021-12-28 03:41:04,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 713 states have (on average 1.399719495091164) internal successors, (998), 736 states have internal predecessors, (998), 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) [2021-12-28 03:41:04,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1402 transitions. [2021-12-28 03:41:04,123 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1402 transitions. Word has length 121 [2021-12-28 03:41:04,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:41:04,123 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1402 transitions. [2021-12-28 03:41:04,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-28 03:41:04,124 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1402 transitions. [2021-12-28 03:41:04,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-28 03:41:04,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:41:04,127 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:41:04,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-28 03:41:04,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-28 03:41:04,353 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:41:04,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:41:04,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1909926563, now seen corresponding path program 1 times [2021-12-28 03:41:04,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:41:04,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109288158] [2021-12-28 03:41:04,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:41:04,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:41:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:04,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:41:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:04,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:41:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:04,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:41:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:04,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:41:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:04,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:41:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:04,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:41:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:04,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 03:41:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:04,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 03:41:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:04,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:41:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:04,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 03:41:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:04,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 03:41:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:04,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 03:41:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:04,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 03:41:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:04,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 03:41:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-28 03:41:04,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:41:04,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109288158] [2021-12-28 03:41:04,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109288158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:41:04,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:41:04,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:41:04,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247076185] [2021-12-28 03:41:04,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:41:04,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:41:04,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:41:04,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:41:04,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:41:04,506 INFO L87 Difference]: Start difference. First operand 963 states and 1402 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 03:41:05,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:41:05,787 INFO L93 Difference]: Finished difference Result 2316 states and 3446 transitions. [2021-12-28 03:41:05,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:41:05,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2021-12-28 03:41:05,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:41:05,794 INFO L225 Difference]: With dead ends: 2316 [2021-12-28 03:41:05,794 INFO L226 Difference]: Without dead ends: 1392 [2021-12-28 03:41:05,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:41:05,797 INFO L933 BasicCegarLoop]: 1946 mSDtfsCounter, 782 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 3839 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:41:05,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [947 Valid, 3839 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 03:41:05,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-12-28 03:41:05,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 965. [2021-12-28 03:41:05,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 715 states have (on average 1.3986013986013985) internal successors, (1000), 738 states have internal predecessors, (1000), 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) [2021-12-28 03:41:05,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1404 transitions. [2021-12-28 03:41:05,872 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1404 transitions. Word has length 130 [2021-12-28 03:41:05,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:41:05,872 INFO L470 AbstractCegarLoop]: Abstraction has 965 states and 1404 transitions. [2021-12-28 03:41:05,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 03:41:05,873 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1404 transitions. [2021-12-28 03:41:05,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-28 03:41:05,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:41:05,876 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:41:05,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 03:41:05,876 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:41:05,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:41:05,877 INFO L85 PathProgramCache]: Analyzing trace with hash 893640959, now seen corresponding path program 1 times [2021-12-28 03:41:05,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:41:05,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863083999] [2021-12-28 03:41:05,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:41:05,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:41:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:06,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:41:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:06,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:41:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:06,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:41:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:06,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:41:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:06,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:41:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:06,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:41:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:06,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 03:41:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:06,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 03:41:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:06,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:41:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:06,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 03:41:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:06,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 03:41:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:06,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 03:41:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:06,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:41:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:06,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 03:41:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:06,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-28 03:41:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-28 03:41:06,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:41:06,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863083999] [2021-12-28 03:41:06,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863083999] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:41:06,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922838382] [2021-12-28 03:41:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:41:06,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:41:06,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:41:06,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:41:06,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:41:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:06,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-28 03:41:06,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:41:06,897 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-28 03:41:06,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:41:06,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922838382] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:41:06,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:41:06,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 10 [2021-12-28 03:41:06,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695016161] [2021-12-28 03:41:06,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:41:06,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:41:06,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:41:06,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:41:06,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:41:06,899 INFO L87 Difference]: Start difference. First operand 965 states and 1404 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 03:41:07,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:41:07,093 INFO L93 Difference]: Finished difference Result 1912 states and 2797 transitions. [2021-12-28 03:41:07,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:41:07,093 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2021-12-28 03:41:07,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:41:07,097 INFO L225 Difference]: With dead ends: 1912 [2021-12-28 03:41:07,097 INFO L226 Difference]: Without dead ends: 973 [2021-12-28 03:41:07,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-12-28 03:41:07,100 INFO L933 BasicCegarLoop]: 1362 mSDtfsCounter, 39 mSDsluCounter, 9498 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 10860 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:41:07,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 10860 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:41:07,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2021-12-28 03:41:07,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 967. [2021-12-28 03:41:07,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 716 states have (on average 1.3980446927374302) internal successors, (1001), 740 states have internal predecessors, (1001), 202 states have call successors, (202), 47 states have call predecessors, (202), 48 states have return successors, (203), 200 states have call predecessors, (203), 202 states have call successors, (203) [2021-12-28 03:41:07,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1406 transitions. [2021-12-28 03:41:07,164 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1406 transitions. Word has length 138 [2021-12-28 03:41:07,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:41:07,164 INFO L470 AbstractCegarLoop]: Abstraction has 967 states and 1406 transitions. [2021-12-28 03:41:07,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 03:41:07,165 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1406 transitions. [2021-12-28 03:41:07,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-28 03:41:07,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:41:07,168 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:41:07,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 03:41:07,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:41:07,409 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:41:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:41:07,410 INFO L85 PathProgramCache]: Analyzing trace with hash -598170049, now seen corresponding path program 1 times [2021-12-28 03:41:07,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:41:07,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203804285] [2021-12-28 03:41:07,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:41:07,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:41:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:07,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:41:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:07,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:41:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:07,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:41:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:07,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:41:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:07,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:41:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:07,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:41:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:07,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:41:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:07,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:41:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:07,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:41:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:07,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 03:41:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:07,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:41:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:07,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 03:41:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:07,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 03:41:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:07,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 03:41:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:07,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-28 03:41:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-28 03:41:07,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:41:07,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203804285] [2021-12-28 03:41:07,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203804285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:41:07,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:41:07,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:41:07,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056108024] [2021-12-28 03:41:07,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:41:07,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:41:07,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:41:07,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:41:07,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:41:07,578 INFO L87 Difference]: Start difference. First operand 967 states and 1406 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 03:41:10,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:41:10,078 INFO L93 Difference]: Finished difference Result 2852 states and 4298 transitions. [2021-12-28 03:41:10,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:41:10,078 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2021-12-28 03:41:10,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:41:10,086 INFO L225 Difference]: With dead ends: 2852 [2021-12-28 03:41:10,086 INFO L226 Difference]: Without dead ends: 1926 [2021-12-28 03:41:10,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:41:10,091 INFO L933 BasicCegarLoop]: 2240 mSDtfsCounter, 1739 mSDsluCounter, 6593 mSDsCounter, 0 mSdLazyCounter, 3327 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1933 SdHoareTripleChecker+Valid, 8833 SdHoareTripleChecker+Invalid, 3754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 3327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:41:10,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1933 Valid, 8833 Invalid, 3754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 3327 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-28 03:41:10,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2021-12-28 03:41:10,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 972. [2021-12-28 03:41:10,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 720 states have (on average 1.3958333333333333) internal successors, (1005), 744 states have internal predecessors, (1005), 202 states have call successors, (202), 47 states have call predecessors, (202), 49 states have return successors, (207), 201 states have call predecessors, (207), 202 states have call successors, (207) [2021-12-28 03:41:10,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1414 transitions. [2021-12-28 03:41:10,206 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1414 transitions. Word has length 141 [2021-12-28 03:41:10,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:41:10,206 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1414 transitions. [2021-12-28 03:41:10,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 03:41:10,206 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1414 transitions. [2021-12-28 03:41:10,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-28 03:41:10,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:41:10,209 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:41:10,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 03:41:10,210 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:41:10,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:41:10,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1479322347, now seen corresponding path program 2 times [2021-12-28 03:41:10,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:41:10,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597124755] [2021-12-28 03:41:10,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:41:10,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:41:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:12,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:41:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:12,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:41:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:12,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:41:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:12,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:41:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:12,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:41:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:12,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:41:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:12,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:41:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:12,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:41:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 03:41:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:12,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 03:41:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:12,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 03:41:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:12,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 03:41:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:12,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 03:41:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:12,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-28 03:41:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-28 03:41:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-28 03:41:12,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:41:12,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597124755] [2021-12-28 03:41:12,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597124755] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:41:12,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:41:12,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-12-28 03:41:12,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891194892] [2021-12-28 03:41:12,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:41:12,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-28 03:41:12,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:41:12,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-28 03:41:12,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2021-12-28 03:41:12,291 INFO L87 Difference]: Start difference. First operand 972 states and 1414 transitions. Second operand has 30 states, 29 states have (on average 3.689655172413793) internal successors, (107), 25 states have internal predecessors, (107), 10 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 12 states have call predecessors, (15), 10 states have call successors, (15) [2021-12-28 03:41:17,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:41:25,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:41:27,047 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:41:31,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:41:33,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:41:39,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:41:41,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:41:44,484 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:41:46,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:41:48,525 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []