./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.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 48ae22c8c2494b96697ffe1db529f00fa4b52cdca22138b3bf77c84445f7f2f5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:36:14,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:36:14,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:36:14,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:36:14,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:36:14,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:36:14,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:36:14,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:36:14,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:36:14,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:36:14,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:36:14,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:36:14,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:36:14,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:36:14,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:36:14,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:36:14,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:36:14,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:36:14,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:36:14,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:36:14,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:36:14,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:36:14,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:36:14,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:36:14,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:36:14,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:36:14,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:36:14,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:36:14,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:36:14,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:36:14,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:36:14,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:36:14,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:36:14,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:36:14,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:36:14,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:36:14,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:36:14,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:36:14,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:36:14,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:36:14,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:36:14,526 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:36:14,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:36:14,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:36:14,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:36:14,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:36:14,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:36:14,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:36:14,556 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:36:14,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:36:14,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:36:14,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:36:14,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:36:14,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:36:14,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:36:14,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:36:14,557 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:36:14,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:36:14,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:36:14,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:36:14,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:36:14,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:36:14,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:36:14,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:36:14,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:36:14,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:36:14,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:36:14,563 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:36:14,563 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:36:14,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:36:14,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:36:14,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48ae22c8c2494b96697ffe1db529f00fa4b52cdca22138b3bf77c84445f7f2f5 [2021-11-06 19:36:14,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:36:14,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:36:14,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:36:14,774 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:36:14,774 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:36:14,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i [2021-11-06 19:36:14,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99493d63e/3ee4247acfea40dbb68494d51eed8a81/FLAG30c08df21 [2021-11-06 19:36:15,576 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:36:15,577 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i [2021-11-06 19:36:15,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99493d63e/3ee4247acfea40dbb68494d51eed8a81/FLAG30c08df21 [2021-11-06 19:36:15,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99493d63e/3ee4247acfea40dbb68494d51eed8a81 [2021-11-06 19:36:15,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:36:15,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:36:15,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:36:15,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:36:15,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:36:15,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:36:15" (1/1) ... [2021-11-06 19:36:15,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72e51ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:15, skipping insertion in model container [2021-11-06 19:36:15,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:36:15" (1/1) ... [2021-11-06 19:36:15,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:36:16,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:36:22,740 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[788938,788951] [2021-11-06 19:36:22,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:36:22,831 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:36:23,174 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[788938,788951] [2021-11-06 19:36:23,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:36:23,472 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:36:23,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:23 WrapperNode [2021-11-06 19:36:23,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:36:23,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:36:23,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:36:23,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:36:23,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:23" (1/1) ... [2021-11-06 19:36:23,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:23" (1/1) ... [2021-11-06 19:36:24,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:36:24,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:36:24,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:36:24,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:36:24,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:23" (1/1) ... [2021-11-06 19:36:24,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:23" (1/1) ... [2021-11-06 19:36:24,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:23" (1/1) ... [2021-11-06 19:36:24,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:23" (1/1) ... [2021-11-06 19:36:25,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:23" (1/1) ... [2021-11-06 19:36:25,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:23" (1/1) ... [2021-11-06 19:36:25,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:23" (1/1) ... [2021-11-06 19:36:25,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:36:25,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:36:25,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:36:25,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:36:25,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:23" (1/1) ... [2021-11-06 19:36:25,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:36:25,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:36:25,872 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) [2021-11-06 19:36:25,881 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 [2021-11-06 19:36:25,930 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_clean_desc3___0 [2021-11-06 19:36:25,930 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_clean_desc3___0 [2021-11-06 19:36:25,930 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_probe [2021-11-06 19:36:25,931 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_probe [2021-11-06 19:36:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_poll_controller [2021-11-06 19:36:25,931 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_poll_controller [2021-11-06 19:36:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_suspend [2021-11-06 19:36:25,931 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_suspend [2021-11-06 19:36:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_irq_register_19_2 [2021-11-06 19:36:25,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_irq_register_19_2 [2021-11-06 19:36:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:36:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:36:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_tx_skbufs [2021-11-06 19:36:25,941 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_tx_skbufs [2021-11-06 19:36:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:36:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_suspend [2021-11-06 19:36:25,941 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_suspend [2021-11-06 19:36:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_interrupt [2021-11-06 19:36:25,941 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_interrupt [2021-11-06 19:36:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:36:25,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:36:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:36:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_init_rx_buffers [2021-11-06 19:36:25,941 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_init_rx_buffers [2021-11-06 19:36:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_setup [2021-11-06 19:36:25,941 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_setup [2021-11-06 19:36:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:36:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:36:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_release [2021-11-06 19:36:25,941 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_release [2021-11-06 19:36:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_timeout [2021-11-06 19:36:25,942 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_timeout [2021-11-06 19:36:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interrupt_instance_handler_2_5 [2021-11-06 19:36:25,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interrupt_instance_handler_2_5 [2021-11-06 19:36:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_init [2021-11-06 19:36:25,942 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_init [2021-11-06 19:36:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:36:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_eee_mode [2021-11-06 19:36:25,942 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_eee_mode [2021-11-06 19:36:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_remove [2021-11-06 19:36:25,943 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_remove [2021-11-06 19:36:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_remove [2021-11-06 19:36:25,943 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_remove [2021-11-06 19:36:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dma_interrupt [2021-11-06 19:36:25,943 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dma_interrupt [2021-11-06 19:36:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_resume [2021-11-06 19:36:25,943 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_resume [2021-11-06 19:36:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:36:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_open [2021-11-06 19:36:25,943 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_open [2021-11-06 19:36:25,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:36:25,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:36:25,944 INFO L130 BoogieDeclarations]: Found specification of procedure init_dma_desc_rings [2021-11-06 19:36:25,944 INFO L138 BoogieDeclarations]: Found implementation of procedure init_dma_desc_rings [2021-11-06 19:36:25,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interrupt_interrupt_instance_2 [2021-11-06 19:36:25,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interrupt_interrupt_instance_2 [2021-11-06 19:36:25,944 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_hw_features [2021-11-06 19:36:25,944 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_hw_features [2021-11-06 19:36:25,944 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_probe [2021-11-06 19:36:25,945 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_probe [2021-11-06 19:36:25,945 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_probe [2021-11-06 19:36:25,945 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_probe [2021-11-06 19:36:25,945 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_resume [2021-11-06 19:36:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_resume [2021-11-06 19:36:25,946 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma_desc_resources [2021-11-06 19:36:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma_desc_resources [2021-11-06 19:36:25,946 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_mdio_reset [2021-11-06 19:36:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_mdio_reset [2021-11-06 19:36:25,946 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 19:36:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 19:36:25,946 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_op_set_eee [2021-11-06 19:36:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_op_set_eee [2021-11-06 19:36:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 19:36:25,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 19:36:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:36:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:36:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-06 19:36:25,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-06 19:36:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_dma_irq [2021-11-06 19:36:25,947 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_dma_irq [2021-11-06 19:36:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_remove [2021-11-06 19:36:25,947 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_remove [2021-11-06 19:36:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_err [2021-11-06 19:36:25,947 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_err [2021-11-06 19:36:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_18 [2021-11-06 19:36:25,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_18 [2021-11-06 19:36:25,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_17 [2021-11-06 19:36:25,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_17 [2021-11-06 19:36:25,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_16 [2021-11-06 19:36:25,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_16 [2021-11-06 19:36:25,948 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_getsettings [2021-11-06 19:36:25,948 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_getsettings [2021-11-06 19:36:25,948 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 19:36:25,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 19:36:25,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:36:25,948 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-06 19:36:25,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-06 19:36:25,949 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_resume [2021-11-06 19:36:25,956 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_resume [2021-11-06 19:37:52,799 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L13291: #t~ret4710 := main_#res; [2021-11-06 19:37:52,799 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_entry_EMGentry_21_returnLabel: main_#res := 0; [2021-11-06 19:37:52,800 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_pci_pci_instance_7_switch_break: call ULTIMATE.dealloc(ldv_pci_pci_instance_7_~#ldv_7_resource_pm_message~0.base, ldv_pci_pci_instance_7_~#ldv_7_resource_pm_message~0.offset);havoc ldv_pci_pci_instance_7_~#ldv_7_resource_pm_message~0.base, ldv_pci_pci_instance_7_~#ldv_7_resource_pm_message~0.offset; [2021-11-06 19:37:52,800 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:37:52,918 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:37:52,919 INFO L299 CfgBuilder]: Removed 6808 assume(true) statements. [2021-11-06 19:37:52,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:37:52 BoogieIcfgContainer [2021-11-06 19:37:52,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:37:52,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:37:52,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:37:52,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:37:52,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:36:15" (1/3) ... [2021-11-06 19:37:52,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2531a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:37:52, skipping insertion in model container [2021-11-06 19:37:52,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:23" (2/3) ... [2021-11-06 19:37:52,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2531a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:37:52, skipping insertion in model container [2021-11-06 19:37:52,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:37:52" (3/3) ... [2021-11-06 19:37:52,934 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-drivers-clk1_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i [2021-11-06 19:37:52,938 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:37:52,938 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-06 19:37:52,989 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:37:52,995 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 [2021-11-06 19:37:52,995 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-06 19:37:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 6471 states, 6307 states have (on average 1.389884255589028) internal successors, (8766), 6317 states have internal predecessors, (8766), 118 states have call successors, (118), 42 states have call predecessors, (118), 42 states have return successors, (118), 116 states have call predecessors, (118), 118 states have call successors, (118) [2021-11-06 19:37:53,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-06 19:37:53,072 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:37:53,072 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:37:53,073 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:37:53,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:37:53,077 INFO L85 PathProgramCache]: Analyzing trace with hash 911916535, now seen corresponding path program 1 times [2021-11-06 19:37:53,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:37:53,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22318914] [2021-11-06 19:37:53,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:37:53,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:37:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:37:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:37:54,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:37:54,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22318914] [2021-11-06 19:37:54,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22318914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:37:54,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:37:54,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:37:54,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119049950] [2021-11-06 19:37:54,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:37:54,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:37:54,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:37:54,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:37:54,385 INFO L87 Difference]: Start difference. First operand has 6471 states, 6307 states have (on average 1.389884255589028) internal successors, (8766), 6317 states have internal predecessors, (8766), 118 states have call successors, (118), 42 states have call predecessors, (118), 42 states have return successors, (118), 116 states have call predecessors, (118), 118 states have call successors, (118) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:37:54,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:37:54,703 INFO L93 Difference]: Finished difference Result 12897 states and 18065 transitions. [2021-11-06 19:37:54,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:37:54,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-06 19:37:54,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:37:54,761 INFO L225 Difference]: With dead ends: 12897 [2021-11-06 19:37:54,761 INFO L226 Difference]: Without dead ends: 6278 [2021-11-06 19:37:54,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:37:54,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6278 states. [2021-11-06 19:37:54,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6278 to 6278. [2021-11-06 19:37:54,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6278 states, 6116 states have (on average 1.3677240026160888) internal successors, (8365), 6124 states have internal predecessors, (8365), 118 states have call successors, (118), 42 states have call predecessors, (118), 42 states have return successors, (118), 116 states have call predecessors, (118), 118 states have call successors, (118) [2021-11-06 19:37:55,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 8601 transitions. [2021-11-06 19:37:55,025 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 8601 transitions. Word has length 21 [2021-11-06 19:37:55,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:37:55,026 INFO L470 AbstractCegarLoop]: Abstraction has 6278 states and 8601 transitions. [2021-11-06 19:37:55,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:37:55,026 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 8601 transitions. [2021-11-06 19:37:55,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-06 19:37:55,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:37:55,027 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:37:55,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:37:55,028 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:37:55,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:37:55,028 INFO L85 PathProgramCache]: Analyzing trace with hash 179016794, now seen corresponding path program 1 times [2021-11-06 19:37:55,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:37:55,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598580204] [2021-11-06 19:37:55,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:37:55,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:37:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:37:55,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:37:55,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:37:55,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598580204] [2021-11-06 19:37:55,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598580204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:37:55,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:37:55,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:37:55,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121941808] [2021-11-06 19:37:55,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:37:55,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:37:55,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:37:55,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:37:55,903 INFO L87 Difference]: Start difference. First operand 6278 states and 8601 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:37:56,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:37:56,251 INFO L93 Difference]: Finished difference Result 12499 states and 17367 transitions. [2021-11-06 19:37:56,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 19:37:56,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-06 19:37:56,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:37:56,325 INFO L225 Difference]: With dead ends: 12499 [2021-11-06 19:37:56,325 INFO L226 Difference]: Without dead ends: 11022 [2021-11-06 19:37:56,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:37:56,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11022 states. [2021-11-06 19:37:56,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11022 to 10986. [2021-11-06 19:37:56,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10986 states, 10668 states have (on average 1.3691413573303337) internal successors, (14606), 10683 states have internal predecessors, (14606), 235 states have call successors, (235), 84 states have call predecessors, (235), 82 states have return successors, (462), 227 states have call predecessors, (462), 235 states have call successors, (462) [2021-11-06 19:37:56,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10986 states to 10986 states and 15303 transitions. [2021-11-06 19:37:56,667 INFO L78 Accepts]: Start accepts. Automaton has 10986 states and 15303 transitions. Word has length 23 [2021-11-06 19:37:56,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:37:56,667 INFO L470 AbstractCegarLoop]: Abstraction has 10986 states and 15303 transitions. [2021-11-06 19:37:56,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:37:56,668 INFO L276 IsEmpty]: Start isEmpty. Operand 10986 states and 15303 transitions. [2021-11-06 19:37:56,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2021-11-06 19:37:56,757 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:37:56,758 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:37:56,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:37:56,758 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:37:56,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:37:56,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1547580522, now seen corresponding path program 1 times [2021-11-06 19:37:56,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:37:56,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209183600] [2021-11-06 19:37:56,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:37:56,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:37:57,277 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 19:37:57,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44087658] [2021-11-06 19:37:57,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:37:57,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 19:37:57,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:37:57,279 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) [2021-11-06 19:37:57,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 19:38:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:02,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 20256 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 19:38:02,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 19:38:03,548 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 19:38:03,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:38:03,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209183600] [2021-11-06 19:38:03,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 19:38:03,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44087658] [2021-11-06 19:38:03,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44087658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:38:03,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:38:03,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:38:03,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939257699] [2021-11-06 19:38:03,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:38:03,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:38:03,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:38:03,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:38:03,552 INFO L87 Difference]: Start difference. First operand 10986 states and 15303 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2021-11-06 19:38:03,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:38:03,837 INFO L93 Difference]: Finished difference Result 21945 states and 31041 transitions. [2021-11-06 19:38:03,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:38:03,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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 353 [2021-11-06 19:38:03,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:38:03,935 INFO L225 Difference]: With dead ends: 21945 [2021-11-06 19:38:03,935 INFO L226 Difference]: Without dead ends: 10992 [2021-11-06 19:38:04,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:38:04,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10992 states. [2021-11-06 19:38:04,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10992 to 10992. [2021-11-06 19:38:04,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10992 states, 10672 states have (on average 1.3690029985007497) internal successors, (14610), 10689 states have internal predecessors, (14610), 235 states have call successors, (235), 84 states have call predecessors, (235), 84 states have return successors, (466), 227 states have call predecessors, (466), 235 states have call successors, (466) [2021-11-06 19:38:04,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10992 states to 10992 states and 15311 transitions. [2021-11-06 19:38:04,311 INFO L78 Accepts]: Start accepts. Automaton has 10992 states and 15311 transitions. Word has length 353 [2021-11-06 19:38:04,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:38:04,314 INFO L470 AbstractCegarLoop]: Abstraction has 10992 states and 15311 transitions. [2021-11-06 19:38:04,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2021-11-06 19:38:04,315 INFO L276 IsEmpty]: Start isEmpty. Operand 10992 states and 15311 transitions. [2021-11-06 19:38:04,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2021-11-06 19:38:04,379 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:38:04,379 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:38:04,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 19:38:04,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 19:38:04,608 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:38:04,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:38:04,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1831566060, now seen corresponding path program 1 times [2021-11-06 19:38:04,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:38:04,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664593025] [2021-11-06 19:38:04,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:38:04,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:38:05,140 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 19:38:05,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670075050] [2021-11-06 19:38:05,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:38:05,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 19:38:05,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:38:05,141 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) [2021-11-06 19:38:05,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 19:38:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:10,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 20255 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 19:38:10,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 19:38:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 19:38:11,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:38:11,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664593025] [2021-11-06 19:38:11,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 19:38:11,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670075050] [2021-11-06 19:38:11,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670075050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:38:11,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:38:11,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 19:38:11,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751132555] [2021-11-06 19:38:11,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 19:38:11,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:38:11,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 19:38:11,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:38:11,349 INFO L87 Difference]: Start difference. First operand 10992 states and 15311 transitions. Second operand has 5 states, 5 states have (on average 64.8) internal successors, (324), 4 states have internal predecessors, (324), 1 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-06 19:38:11,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:38:11,618 INFO L93 Difference]: Finished difference Result 22399 states and 31741 transitions. [2021-11-06 19:38:11,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 19:38:11,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 4 states have internal predecessors, (324), 1 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 353 [2021-11-06 19:38:11,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:38:11,688 INFO L225 Difference]: With dead ends: 22399 [2021-11-06 19:38:11,688 INFO L226 Difference]: Without dead ends: 11440 [2021-11-06 19:38:11,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:38:11,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11440 states. [2021-11-06 19:38:11,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11440 to 11000. [2021-11-06 19:38:11,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11000 states, 10678 states have (on average 1.3687956546169695) internal successors, (14616), 10695 states have internal predecessors, (14616), 235 states have call successors, (235), 84 states have call predecessors, (235), 86 states have return successors, (470), 229 states have call predecessors, (470), 235 states have call successors, (470) [2021-11-06 19:38:12,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11000 states to 11000 states and 15321 transitions. [2021-11-06 19:38:12,010 INFO L78 Accepts]: Start accepts. Automaton has 11000 states and 15321 transitions. Word has length 353 [2021-11-06 19:38:12,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:38:12,011 INFO L470 AbstractCegarLoop]: Abstraction has 11000 states and 15321 transitions. [2021-11-06 19:38:12,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 4 states have internal predecessors, (324), 1 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-06 19:38:12,012 INFO L276 IsEmpty]: Start isEmpty. Operand 11000 states and 15321 transitions. [2021-11-06 19:38:12,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2021-11-06 19:38:12,064 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:38:12,065 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:38:12,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 19:38:12,290 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,SelfDestructingSolverStorable3 [2021-11-06 19:38:12,291 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:38:12,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:38:12,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1800330308, now seen corresponding path program 1 times [2021-11-06 19:38:12,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:38:12,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621265568] [2021-11-06 19:38:12,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:38:12,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:38:12,774 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 19:38:12,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442630407] [2021-11-06 19:38:12,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:38:12,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 19:38:12,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:38:12,776 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) [2021-11-06 19:38:12,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 19:38:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:18,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 20382 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-06 19:38:18,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 19:38:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 19:38:18,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:38:18,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621265568] [2021-11-06 19:38:18,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 19:38:18,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442630407] [2021-11-06 19:38:18,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442630407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:38:18,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:38:18,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 19:38:18,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302002503] [2021-11-06 19:38:18,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 19:38:18,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:38:18,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 19:38:18,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-06 19:38:18,882 INFO L87 Difference]: Start difference. First operand 11000 states and 15321 transitions. Second operand has 12 states, 12 states have (on average 27.166666666666668) internal successors, (326), 12 states have internal predecessors, (326), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-06 19:38:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:38:19,693 INFO L93 Difference]: Finished difference Result 22014 states and 30655 transitions. [2021-11-06 19:38:19,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-06 19:38:19,694 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 27.166666666666668) internal successors, (326), 12 states have internal predecessors, (326), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 359 [2021-11-06 19:38:19,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:38:19,747 INFO L225 Difference]: With dead ends: 22014 [2021-11-06 19:38:19,747 INFO L226 Difference]: Without dead ends: 10998 [2021-11-06 19:38:19,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-11-06 19:38:19,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10998 states. [2021-11-06 19:38:19,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10998 to 10998. [2021-11-06 19:38:19,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10998 states, 10676 states have (on average 1.3685837392281754) internal successors, (14611), 10693 states have internal predecessors, (14611), 235 states have call successors, (235), 84 states have call predecessors, (235), 86 states have return successors, (470), 229 states have call predecessors, (470), 235 states have call successors, (470) [2021-11-06 19:38:20,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10998 states to 10998 states and 15316 transitions. [2021-11-06 19:38:20,012 INFO L78 Accepts]: Start accepts. Automaton has 10998 states and 15316 transitions. Word has length 359 [2021-11-06 19:38:20,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:38:20,012 INFO L470 AbstractCegarLoop]: Abstraction has 10998 states and 15316 transitions. [2021-11-06 19:38:20,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.166666666666668) internal successors, (326), 12 states have internal predecessors, (326), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-06 19:38:20,012 INFO L276 IsEmpty]: Start isEmpty. Operand 10998 states and 15316 transitions. [2021-11-06 19:38:20,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-11-06 19:38:20,064 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:38:20,064 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:38:20,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 19:38:20,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 19:38:20,280 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:38:20,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:38:20,280 INFO L85 PathProgramCache]: Analyzing trace with hash 114909424, now seen corresponding path program 1 times [2021-11-06 19:38:20,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:38:20,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406088441] [2021-11-06 19:38:20,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:38:20,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:38:20,773 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 19:38:20,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769142159] [2021-11-06 19:38:20,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:38:20,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 19:38:20,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:38:20,775 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 19:38:20,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 19:38:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:26,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 20424 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 19:38:26,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 19:38:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 19:38:26,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:38:26,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406088441] [2021-11-06 19:38:26,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 19:38:26,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769142159] [2021-11-06 19:38:26,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769142159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:38:26,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:38:26,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 19:38:26,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451817672] [2021-11-06 19:38:26,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 19:38:26,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:38:26,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 19:38:26,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:38:26,882 INFO L87 Difference]: Start difference. First operand 10998 states and 15316 transitions. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-06 19:38:27,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:38:27,093 INFO L93 Difference]: Finished difference Result 21986 states and 30621 transitions. [2021-11-06 19:38:27,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 19:38:27,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 366 [2021-11-06 19:38:27,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:38:27,145 INFO L225 Difference]: With dead ends: 21986 [2021-11-06 19:38:27,145 INFO L226 Difference]: Without dead ends: 10998 [2021-11-06 19:38:27,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 19:38:27,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10998 states. [2021-11-06 19:38:27,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10998 to 10998. [2021-11-06 19:38:27,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10998 states, 10676 states have (on average 1.3684900711877108) internal successors, (14610), 10693 states have internal predecessors, (14610), 235 states have call successors, (235), 84 states have call predecessors, (235), 86 states have return successors, (470), 229 states have call predecessors, (470), 235 states have call successors, (470) [2021-11-06 19:38:27,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10998 states to 10998 states and 15315 transitions. [2021-11-06 19:38:27,410 INFO L78 Accepts]: Start accepts. Automaton has 10998 states and 15315 transitions. Word has length 366 [2021-11-06 19:38:27,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:38:27,410 INFO L470 AbstractCegarLoop]: Abstraction has 10998 states and 15315 transitions. [2021-11-06 19:38:27,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-06 19:38:27,411 INFO L276 IsEmpty]: Start isEmpty. Operand 10998 states and 15315 transitions. [2021-11-06 19:38:27,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-11-06 19:38:27,458 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:38:27,458 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:38:27,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 19:38:27,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 19:38:27,684 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:38:27,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:38:27,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1685153327, now seen corresponding path program 1 times [2021-11-06 19:38:27,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:38:27,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628291276] [2021-11-06 19:38:27,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:38:27,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:38:28,113 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 19:38:28,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446379830] [2021-11-06 19:38:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:38:28,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 19:38:28,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:38:28,114 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 19:38:28,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 19:38:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:38,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 20424 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-06 19:38:38,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 19:38:39,447 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 19:38:39,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:38:39,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628291276] [2021-11-06 19:38:39,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 19:38:39,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446379830] [2021-11-06 19:38:39,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446379830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:38:39,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:38:39,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 19:38:39,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319528765] [2021-11-06 19:38:39,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 19:38:39,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:38:39,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 19:38:39,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-06 19:38:39,449 INFO L87 Difference]: Start difference. First operand 10998 states and 15315 transitions. Second operand has 10 states, 10 states have (on average 33.2) internal successors, (332), 7 states have internal predecessors, (332), 1 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 5 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-06 19:38:39,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:38:39,775 INFO L93 Difference]: Finished difference Result 21977 states and 31171 transitions. [2021-11-06 19:38:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 19:38:39,775 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.2) internal successors, (332), 7 states have internal predecessors, (332), 1 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 5 states have call predecessors, (13), 1 states have call successors, (13) Word has length 363 [2021-11-06 19:38:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:38:39,824 INFO L225 Difference]: With dead ends: 21977 [2021-11-06 19:38:39,825 INFO L226 Difference]: Without dead ends: 11010 [2021-11-06 19:38:39,869 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-06 19:38:39,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11010 states. [2021-11-06 19:38:40,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11010 to 11010. [2021-11-06 19:38:40,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11010 states, 10686 states have (on average 1.3681452367583755) internal successors, (14620), 10703 states have internal predecessors, (14620), 235 states have call successors, (235), 84 states have call predecessors, (235), 88 states have return successors, (562), 231 states have call predecessors, (562), 235 states have call successors, (562) [2021-11-06 19:38:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11010 states to 11010 states and 15417 transitions. [2021-11-06 19:38:40,075 INFO L78 Accepts]: Start accepts. Automaton has 11010 states and 15417 transitions. Word has length 363 [2021-11-06 19:38:40,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:38:40,075 INFO L470 AbstractCegarLoop]: Abstraction has 11010 states and 15417 transitions. [2021-11-06 19:38:40,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.2) internal successors, (332), 7 states have internal predecessors, (332), 1 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 5 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-06 19:38:40,076 INFO L276 IsEmpty]: Start isEmpty. Operand 11010 states and 15417 transitions. [2021-11-06 19:38:40,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-11-06 19:38:40,119 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:38:40,119 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:38:40,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 19:38:40,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 19:38:40,339 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:38:40,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:38:40,340 INFO L85 PathProgramCache]: Analyzing trace with hash 431179375, now seen corresponding path program 1 times [2021-11-06 19:38:40,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:38:40,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366431009] [2021-11-06 19:38:40,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:38:40,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:38:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:42,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-06 19:38:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:42,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-06 19:38:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:42,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-06 19:38:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:42,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 19:38:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:42,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-06 19:38:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:42,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-06 19:38:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:42,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-06 19:38:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:42,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 19:38:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:42,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 19:38:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:42,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-06 19:38:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:42,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-06 19:38:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:42,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 19:38:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:42,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 19:38:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:38:42,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 19:38:42,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:38:42,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366431009] [2021-11-06 19:38:42,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366431009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:38:42,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:38:42,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 19:38:42,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302918001] [2021-11-06 19:38:42,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:38:42,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:38:42,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:38:42,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:38:42,537 INFO L87 Difference]: Start difference. First operand 11010 states and 15417 transitions. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 2 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-06 19:39:06,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:39:06,732 INFO L93 Difference]: Finished difference Result 23137 states and 33232 transitions. [2021-11-06 19:39:06,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 19:39:06,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 2 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 363 [2021-11-06 19:39:06,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:39:06,799 INFO L225 Difference]: With dead ends: 23137 [2021-11-06 19:39:06,800 INFO L226 Difference]: Without dead ends: 12158 [2021-11-06 19:39:06,853 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:39:06,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12158 states. [2021-11-06 19:39:07,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12158 to 11374. [2021-11-06 19:39:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11374 states, 10992 states have (on average 1.364537845705968) internal successors, (14999), 11025 states have internal predecessors, (14999), 245 states have call successors, (245), 84 states have call predecessors, (245), 136 states have return successors, (813), 277 states have call predecessors, (813), 245 states have call successors, (813) [2021-11-06 19:39:07,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11374 states to 11374 states and 16057 transitions. [2021-11-06 19:39:07,172 INFO L78 Accepts]: Start accepts. Automaton has 11374 states and 16057 transitions. Word has length 363 [2021-11-06 19:39:07,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:39:07,172 INFO L470 AbstractCegarLoop]: Abstraction has 11374 states and 16057 transitions. [2021-11-06 19:39:07,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 2 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-06 19:39:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 11374 states and 16057 transitions. [2021-11-06 19:39:07,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2021-11-06 19:39:07,224 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:39:07,224 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:39:07,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 19:39:07,224 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:39:07,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:39:07,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1729069961, now seen corresponding path program 1 times [2021-11-06 19:39:07,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:39:07,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936127375] [2021-11-06 19:39:07,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:39:07,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:39:07,691 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 19:39:07,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370630997] [2021-11-06 19:39:07,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:39:07,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 19:39:07,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:39:07,692 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 19:39:07,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 19:39:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:39:23,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 20708 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-06 19:39:23,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 19:39:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 19:39:24,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:39:24,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936127375] [2021-11-06 19:39:24,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 19:39:24,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370630997] [2021-11-06 19:39:24,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370630997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:39:24,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:39:24,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 19:39:24,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515435966] [2021-11-06 19:39:24,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 19:39:24,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:39:24,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 19:39:24,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-06 19:39:24,864 INFO L87 Difference]: Start difference. First operand 11374 states and 16057 transitions. Second operand has 10 states, 10 states have (on average 34.8) internal successors, (348), 7 states have internal predecessors, (348), 1 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (15), 5 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-06 19:39:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:39:25,301 INFO L93 Difference]: Finished difference Result 22737 states and 32890 transitions. [2021-11-06 19:39:25,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 19:39:25,301 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 34.8) internal successors, (348), 7 states have internal predecessors, (348), 1 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (15), 5 states have call predecessors, (15), 1 states have call successors, (15) Word has length 383 [2021-11-06 19:39:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:39:25,360 INFO L225 Difference]: With dead ends: 22737 [2021-11-06 19:39:25,361 INFO L226 Difference]: Without dead ends: 11394 [2021-11-06 19:39:25,412 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-06 19:39:25,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11394 states. [2021-11-06 19:39:25,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11394 to 11374. [2021-11-06 19:39:25,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11374 states, 10992 states have (on average 1.364537845705968) internal successors, (14999), 11025 states have internal predecessors, (14999), 245 states have call successors, (245), 84 states have call predecessors, (245), 136 states have return successors, (813), 277 states have call predecessors, (813), 245 states have call successors, (813) [2021-11-06 19:39:25,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11374 states to 11374 states and 16057 transitions. [2021-11-06 19:39:25,722 INFO L78 Accepts]: Start accepts. Automaton has 11374 states and 16057 transitions. Word has length 383 [2021-11-06 19:39:25,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:39:25,723 INFO L470 AbstractCegarLoop]: Abstraction has 11374 states and 16057 transitions. [2021-11-06 19:39:25,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.8) internal successors, (348), 7 states have internal predecessors, (348), 1 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (15), 5 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-06 19:39:25,723 INFO L276 IsEmpty]: Start isEmpty. Operand 11374 states and 16057 transitions. [2021-11-06 19:39:25,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-11-06 19:39:25,773 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:39:25,774 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:39:25,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 19:39:25,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 19:39:25,988 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:39:25,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:39:25,988 INFO L85 PathProgramCache]: Analyzing trace with hash 159124781, now seen corresponding path program 1 times [2021-11-06 19:39:25,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:39:25,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439489671] [2021-11-06 19:39:25,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:39:25,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:39:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:39:27,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-06 19:39:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:39:27,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-06 19:39:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:39:27,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-06 19:39:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:39:27,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 19:39:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:39:27,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-06 19:39:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:39:27,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-06 19:39:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:39:27,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-06 19:39:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:39:27,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 19:39:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:39:27,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 19:39:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:39:27,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-06 19:39:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:39:28,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-06 19:39:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:39:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 19:39:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:39:28,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 19:39:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:39:28,133 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 19:39:28,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:39:28,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439489671] [2021-11-06 19:39:28,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439489671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:39:28,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:39:28,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 19:39:28,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083807346] [2021-11-06 19:39:28,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:39:28,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:39:28,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:39:28,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:39:28,137 INFO L87 Difference]: Start difference. First operand 11374 states and 16057 transitions. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 2 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-06 19:39:52,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:39:52,720 INFO L93 Difference]: Finished difference Result 23509 states and 33882 transitions. [2021-11-06 19:39:52,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:39:52,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 2 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 363 [2021-11-06 19:39:52,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:39:52,785 INFO L225 Difference]: With dead ends: 23509 [2021-11-06 19:39:52,785 INFO L226 Difference]: Without dead ends: 12166 [2021-11-06 19:39:52,841 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:39:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12166 states. [2021-11-06 19:39:53,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12166 to 11376. [2021-11-06 19:39:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11376 states, 10994 states have (on average 1.3644715299254138) internal successors, (15001), 11027 states have internal predecessors, (15001), 245 states have call successors, (245), 84 states have call predecessors, (245), 136 states have return successors, (813), 277 states have call predecessors, (813), 245 states have call successors, (813) [2021-11-06 19:39:53,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11376 states to 11376 states and 16059 transitions. [2021-11-06 19:39:53,151 INFO L78 Accepts]: Start accepts. Automaton has 11376 states and 16059 transitions. Word has length 363 [2021-11-06 19:39:53,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:39:53,151 INFO L470 AbstractCegarLoop]: Abstraction has 11376 states and 16059 transitions. [2021-11-06 19:39:53,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 2 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-06 19:39:53,152 INFO L276 IsEmpty]: Start isEmpty. Operand 11376 states and 16059 transitions. [2021-11-06 19:39:53,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-11-06 19:39:53,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:39:53,202 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:39:53,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 19:39:53,203 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:39:53,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:39:53,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1186903364, now seen corresponding path program 1 times [2021-11-06 19:39:53,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:39:53,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637384653] [2021-11-06 19:39:53,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:39:53,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:43:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:43:40,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-06 19:43:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:43:40,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-06 19:43:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:43:40,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-06 19:43:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:43:40,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 19:43:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:43:40,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-06 19:43:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:43:40,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-06 19:43:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:43:40,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-06 19:43:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:43:40,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 19:43:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:43:40,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 19:43:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:43:40,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-06 19:43:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:43:40,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-06 19:43:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:43:40,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 19:43:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:43:40,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-06 19:43:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:43:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 19:43:40,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:43:40,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637384653] [2021-11-06 19:43:40,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637384653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:43:40,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:43:40,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 19:43:40,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072742845] [2021-11-06 19:43:40,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 19:43:40,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:43:40,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 19:43:40,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-11-06 19:43:40,916 INFO L87 Difference]: Start difference. First operand 11376 states and 16059 transitions. Second operand has 16 states, 16 states have (on average 20.9375) internal successors, (335), 14 states have internal predecessors, (335), 2 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-06 19:44:12,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:44:12,490 INFO L93 Difference]: Finished difference Result 31078 states and 43176 transitions. [2021-11-06 19:44:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-06 19:44:12,491 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 20.9375) internal successors, (335), 14 states have internal predecessors, (335), 2 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 366 [2021-11-06 19:44:12,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:44:12,564 INFO L225 Difference]: With dead ends: 31078 [2021-11-06 19:44:12,564 INFO L226 Difference]: Without dead ends: 19853 [2021-11-06 19:44:12,610 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=891, Unknown=0, NotChecked=0, Total=1056 [2021-11-06 19:44:12,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19853 states. [2021-11-06 19:44:12,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19853 to 11414. [2021-11-06 19:44:12,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11414 states, 11028 states have (on average 1.3635291984040623) internal successors, (15037), 11063 states have internal predecessors, (15037), 245 states have call successors, (245), 84 states have call predecessors, (245), 140 states have return successors, (825), 279 states have call predecessors, (825), 245 states have call successors, (825) [2021-11-06 19:44:13,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11414 states to 11414 states and 16107 transitions. [2021-11-06 19:44:13,003 INFO L78 Accepts]: Start accepts. Automaton has 11414 states and 16107 transitions. Word has length 366 [2021-11-06 19:44:13,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:44:13,003 INFO L470 AbstractCegarLoop]: Abstraction has 11414 states and 16107 transitions. [2021-11-06 19:44:13,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 20.9375) internal successors, (335), 14 states have internal predecessors, (335), 2 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-06 19:44:13,004 INFO L276 IsEmpty]: Start isEmpty. Operand 11414 states and 16107 transitions. [2021-11-06 19:44:13,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-11-06 19:44:13,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:44:13,047 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:44:13,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 19:44:13,048 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:44:13,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:44:13,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1722621779, now seen corresponding path program 1 times [2021-11-06 19:44:13,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:44:13,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400766962] [2021-11-06 19:44:13,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:44:13,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:48:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:48:06,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-06 19:48:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:48:06,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-06 19:48:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:48:06,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-06 19:48:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:48:06,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 19:48:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:48:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-06 19:48:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:48:06,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-06 19:48:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:48:06,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-06 19:48:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:48:06,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 19:48:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:48:06,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-06 19:48:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:48:06,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-06 19:48:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:48:06,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-06 19:48:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:48:06,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 19:48:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:48:06,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-06 19:48:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:48:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 19:48:06,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:48:06,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400766962] [2021-11-06 19:48:06,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400766962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:48:06,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:48:06,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 19:48:06,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883810475] [2021-11-06 19:48:06,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 19:48:06,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:48:06,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 19:48:06,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-11-06 19:48:06,721 INFO L87 Difference]: Start difference. First operand 11414 states and 16107 transitions. Second operand has 13 states, 13 states have (on average 26.307692307692307) internal successors, (342), 11 states have internal predecessors, (342), 2 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-06 19:48:32,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:48:32,631 INFO L93 Difference]: Finished difference Result 30908 states and 43602 transitions. [2021-11-06 19:48:32,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-06 19:48:32,632 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 26.307692307692307) internal successors, (342), 11 states have internal predecessors, (342), 2 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 373 [2021-11-06 19:48:32,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:48:32,709 INFO L225 Difference]: With dead ends: 30908 [2021-11-06 19:48:32,709 INFO L226 Difference]: Without dead ends: 19523 [2021-11-06 19:48:32,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2021-11-06 19:48:32,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19523 states. [2021-11-06 19:48:33,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19523 to 11414. [2021-11-06 19:48:33,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11414 states, 11028 states have (on average 1.363347841857091) internal successors, (15035), 11063 states have internal predecessors, (15035), 245 states have call successors, (245), 84 states have call predecessors, (245), 140 states have return successors, (825), 279 states have call predecessors, (825), 245 states have call successors, (825) [2021-11-06 19:48:33,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11414 states to 11414 states and 16105 transitions. [2021-11-06 19:48:33,178 INFO L78 Accepts]: Start accepts. Automaton has 11414 states and 16105 transitions. Word has length 373 [2021-11-06 19:48:33,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:48:33,178 INFO L470 AbstractCegarLoop]: Abstraction has 11414 states and 16105 transitions. [2021-11-06 19:48:33,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 26.307692307692307) internal successors, (342), 11 states have internal predecessors, (342), 2 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-06 19:48:33,178 INFO L276 IsEmpty]: Start isEmpty. Operand 11414 states and 16105 transitions. [2021-11-06 19:48:33,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2021-11-06 19:48:33,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:48:33,219 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:48:33,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 19:48:33,219 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:48:33,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:48:33,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1316483060, now seen corresponding path program 1 times [2021-11-06 19:48:33,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:48:33,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282415683] [2021-11-06 19:48:33,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:48:33,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Killed by 15