/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 16:28:26,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 16:28:26,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 16:28:26,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 16:28:26,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 16:28:26,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 16:28:26,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 16:28:26,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 16:28:26,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 16:28:26,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 16:28:26,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 16:28:26,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 16:28:26,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 16:28:26,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 16:28:26,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 16:28:26,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 16:28:26,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 16:28:26,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 16:28:26,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 16:28:26,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 16:28:26,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 16:28:26,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 16:28:26,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 16:28:26,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 16:28:26,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 16:28:26,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 16:28:26,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 16:28:26,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 16:28:26,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 16:28:26,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 16:28:26,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 16:28:26,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 16:28:26,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 16:28:26,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 16:28:26,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 16:28:26,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 16:28:26,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 16:28:26,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 16:28:26,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 16:28:26,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 16:28:26,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 16:28:26,821 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 16:28:26,849 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 16:28:26,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 16:28:26,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 16:28:26,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 16:28:26,851 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 16:28:26,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 16:28:26,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 16:28:26,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 16:28:26,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 16:28:26,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 16:28:26,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 16:28:26,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 16:28:26,852 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 16:28:26,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 16:28:26,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 16:28:26,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 16:28:26,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 16:28:26,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 16:28:26,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 16:28:26,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 16:28:26,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 16:28:26,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 16:28:26,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 16:28:26,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 16:28:26,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 16:28:26,855 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 16:28:27,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 16:28:27,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 16:28:27,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 16:28:27,305 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 16:28:27,305 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 16:28:27,306 INFO L432 ainManager$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 [2020-12-22 16:28:27,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea7842754/78ed70ad65834717b1034ab2298477fc/FLAG438960a99 [2020-12-22 16:28:28,817 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 16:28:28,818 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 [2020-12-22 16:28:28,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea7842754/78ed70ad65834717b1034ab2298477fc/FLAG438960a99 [2020-12-22 16:28:28,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea7842754/78ed70ad65834717b1034ab2298477fc [2020-12-22 16:28:28,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 16:28:28,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 16:28:29,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 16:28:29,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 16:28:29,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 16:28:29,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:28:28" (1/1) ... [2020-12-22 16:28:29,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e6c8e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:29, skipping insertion in model container [2020-12-22 16:28:29,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:28:28" (1/1) ... [2020-12-22 16:28:29,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 16:28:29,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 16:28:38,988 WARN L226 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] [2020-12-22 16:28:39,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 16:28:39,287 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 16:28:40,121 WARN L226 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] [2020-12-22 16:28:40,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 16:28:42,418 INFO L208 MainTranslator]: Completed translation [2020-12-22 16:28:42,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:42 WrapperNode [2020-12-22 16:28:42,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 16:28:42,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 16:28:42,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 16:28:42,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 16:28:42,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:42" (1/1) ... [2020-12-22 16:28:42,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:42" (1/1) ... [2020-12-22 16:28:44,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 16:28:44,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 16:28:44,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 16:28:44,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 16:28:44,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:42" (1/1) ... [2020-12-22 16:28:44,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:42" (1/1) ... [2020-12-22 16:28:44,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:42" (1/1) ... [2020-12-22 16:28:44,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:42" (1/1) ... [2020-12-22 16:28:46,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:42" (1/1) ... [2020-12-22 16:28:46,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:42" (1/1) ... [2020-12-22 16:28:46,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:42" (1/1) ... [2020-12-22 16:28:46,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 16:28:46,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 16:28:46,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 16:28:46,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 16:28:46,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 16:28:47,051 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_clean_desc3___0 [2020-12-22 16:28:47,052 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_clean_desc3___0 [2020-12-22 16:28:47,052 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_probe [2020-12-22 16:28:47,052 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_probe [2020-12-22 16:28:47,052 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_poll_controller [2020-12-22 16:28:47,052 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_poll_controller [2020-12-22 16:28:47,053 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_suspend [2020-12-22 16:28:47,053 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_suspend [2020-12-22 16:28:47,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_irq_register_19_2 [2020-12-22 16:28:47,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_irq_register_19_2 [2020-12-22 16:28:47,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 16:28:47,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 16:28:47,054 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_tx_skbufs [2020-12-22 16:28:47,054 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_tx_skbufs [2020-12-22 16:28:47,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 16:28:47,054 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_suspend [2020-12-22 16:28:47,054 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_suspend [2020-12-22 16:28:47,054 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_interrupt [2020-12-22 16:28:47,054 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_interrupt [2020-12-22 16:28:47,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 16:28:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 16:28:47,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 16:28:47,055 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_init_rx_buffers [2020-12-22 16:28:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_init_rx_buffers [2020-12-22 16:28:47,055 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_setup [2020-12-22 16:28:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_setup [2020-12-22 16:28:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 16:28:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 16:28:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_release [2020-12-22 16:28:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_release [2020-12-22 16:28:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_timeout [2020-12-22 16:28:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_timeout [2020-12-22 16:28:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interrupt_instance_handler_2_5 [2020-12-22 16:28:47,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interrupt_instance_handler_2_5 [2020-12-22 16:28:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_init [2020-12-22 16:28:47,057 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_init [2020-12-22 16:28:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 16:28:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_eee_mode [2020-12-22 16:28:47,057 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_eee_mode [2020-12-22 16:28:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_remove [2020-12-22 16:28:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_remove [2020-12-22 16:28:47,058 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_remove [2020-12-22 16:28:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_remove [2020-12-22 16:28:47,058 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dma_interrupt [2020-12-22 16:28:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dma_interrupt [2020-12-22 16:28:47,058 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_resume [2020-12-22 16:28:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_resume [2020-12-22 16:28:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 16:28:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_open [2020-12-22 16:28:47,059 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_open [2020-12-22 16:28:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 16:28:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 16:28:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure init_dma_desc_rings [2020-12-22 16:28:47,059 INFO L138 BoogieDeclarations]: Found implementation of procedure init_dma_desc_rings [2020-12-22 16:28:47,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interrupt_interrupt_instance_2 [2020-12-22 16:28:47,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interrupt_interrupt_instance_2 [2020-12-22 16:28:47,060 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_hw_features [2020-12-22 16:28:47,060 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_hw_features [2020-12-22 16:28:47,060 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_probe [2020-12-22 16:28:47,060 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_probe [2020-12-22 16:28:47,060 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_probe [2020-12-22 16:28:47,061 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_probe [2020-12-22 16:28:47,061 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_resume [2020-12-22 16:28:47,061 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_resume [2020-12-22 16:28:47,061 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma_desc_resources [2020-12-22 16:28:47,061 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma_desc_resources [2020-12-22 16:28:47,061 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_mdio_reset [2020-12-22 16:28:47,062 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_mdio_reset [2020-12-22 16:28:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 16:28:47,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 16:28:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_op_set_eee [2020-12-22 16:28:47,062 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_op_set_eee [2020-12-22 16:28:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-12-22 16:28:47,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-12-22 16:28:47,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 16:28:47,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 16:28:47,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2020-12-22 16:28:47,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2020-12-22 16:28:47,063 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_dma_irq [2020-12-22 16:28:47,064 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_dma_irq [2020-12-22 16:28:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_remove [2020-12-22 16:28:47,064 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_remove [2020-12-22 16:28:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_err [2020-12-22 16:28:47,064 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_err [2020-12-22 16:28:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_18 [2020-12-22 16:28:47,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_18 [2020-12-22 16:28:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_17 [2020-12-22 16:28:47,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_17 [2020-12-22 16:28:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_16 [2020-12-22 16:28:47,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_16 [2020-12-22 16:28:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_getsettings [2020-12-22 16:28:47,065 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_getsettings [2020-12-22 16:28:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 16:28:47,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 16:28:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 16:28:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2020-12-22 16:28:47,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2020-12-22 16:28:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_resume [2020-12-22 16:28:47,066 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_resume [2020-12-22 16:30:41,855 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L13291: #t~ret4710 := main_#res; [2020-12-22 16:30:41,856 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_entry_EMGentry_21_returnLabel: main_#res := 0; [2020-12-22 16:30:41,857 INFO L759 $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; [2020-12-22 16:30:41,857 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2020-12-22 16:30:42,049 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 16:30:42,049 INFO L299 CfgBuilder]: Removed 6808 assume(true) statements. [2020-12-22 16:30:42,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:30:42 BoogieIcfgContainer [2020-12-22 16:30:42,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 16:30:42,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 16:30:42,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 16:30:42,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 16:30:42,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:28:28" (1/3) ... [2020-12-22 16:30:42,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e24169d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:30:42, skipping insertion in model container [2020-12-22 16:30:42,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:42" (2/3) ... [2020-12-22 16:30:42,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e24169d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:30:42, skipping insertion in model container [2020-12-22 16:30:42,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:30:42" (3/3) ... [2020-12-22 16:30:42,067 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-drivers-clk1_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i [2020-12-22 16:30:42,074 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 16:30:42,083 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-22 16:30:42,104 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 16:30:42,155 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 16:30:42,155 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 16:30:42,155 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 16:30:42,155 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 16:30:42,155 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 16:30:42,156 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 16:30:42,156 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 16:30:42,156 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 16:30:42,271 INFO L276 IsEmpty]: Start isEmpty. Operand 6471 states. [2020-12-22 16:30:42,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 16:30:42,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:30:42,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 16:30:42,280 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:30:42,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:30:42,288 INFO L82 PathProgramCache]: Analyzing trace with hash 911916535, now seen corresponding path program 1 times [2020-12-22 16:30:42,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:30:42,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103056072] [2020-12-22 16:30:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:30:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:30:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 16:30:44,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103056072] [2020-12-22 16:30:44,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:30:44,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:30:44,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643550649] [2020-12-22 16:30:44,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:30:44,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:30:44,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:30:44,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:30:44,608 INFO L87 Difference]: Start difference. First operand 6471 states. Second operand 4 states. [2020-12-22 16:30:45,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:30:45,257 INFO L93 Difference]: Finished difference Result 12897 states and 18065 transitions. [2020-12-22 16:30:45,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 16:30:45,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-12-22 16:30:45,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:30:45,363 INFO L225 Difference]: With dead ends: 12897 [2020-12-22 16:30:45,364 INFO L226 Difference]: Without dead ends: 6278 [2020-12-22 16:30:45,426 INFO L677 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 [2020-12-22 16:30:45,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6278 states. [2020-12-22 16:30:45,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6278 to 6278. [2020-12-22 16:30:45,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6278 states. [2020-12-22 16:30:45,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 8598 transitions. [2020-12-22 16:30:45,848 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 8598 transitions. Word has length 21 [2020-12-22 16:30:45,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:30:45,850 INFO L481 AbstractCegarLoop]: Abstraction has 6278 states and 8598 transitions. [2020-12-22 16:30:45,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:30:45,850 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 8598 transitions. [2020-12-22 16:30:45,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 16:30:45,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:30:45,851 INFO L422 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] [2020-12-22 16:30:45,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 16:30:45,852 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:30:45,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:30:45,853 INFO L82 PathProgramCache]: Analyzing trace with hash 179016794, now seen corresponding path program 1 times [2020-12-22 16:30:45,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:30:45,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709366004] [2020-12-22 16:30:45,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:30:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:30:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 16:30:47,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709366004] [2020-12-22 16:30:47,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:30:47,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:30:47,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105929764] [2020-12-22 16:30:47,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:30:47,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:30:47,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:30:47,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:30:47,510 INFO L87 Difference]: Start difference. First operand 6278 states and 8598 transitions. Second operand 4 states. [2020-12-22 16:30:48,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:30:48,151 INFO L93 Difference]: Finished difference Result 12499 states and 17361 transitions. [2020-12-22 16:30:48,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 16:30:48,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-12-22 16:30:48,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:30:48,279 INFO L225 Difference]: With dead ends: 12499 [2020-12-22 16:30:48,279 INFO L226 Difference]: Without dead ends: 11022 [2020-12-22 16:30:48,291 INFO L677 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 [2020-12-22 16:30:48,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11022 states. [2020-12-22 16:30:48,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11022 to 10986. [2020-12-22 16:30:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10986 states. [2020-12-22 16:30:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10986 states to 10986 states and 15297 transitions. [2020-12-22 16:30:48,845 INFO L78 Accepts]: Start accepts. Automaton has 10986 states and 15297 transitions. Word has length 23 [2020-12-22 16:30:48,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:30:48,845 INFO L481 AbstractCegarLoop]: Abstraction has 10986 states and 15297 transitions. [2020-12-22 16:30:48,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:30:48,846 INFO L276 IsEmpty]: Start isEmpty. Operand 10986 states and 15297 transitions. [2020-12-22 16:30:49,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-12-22 16:30:49,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:30:49,014 INFO L422 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] [2020-12-22 16:30:49,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 16:30:49,015 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:30:49,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:30:49,016 INFO L82 PathProgramCache]: Analyzing trace with hash -737940263, now seen corresponding path program 1 times [2020-12-22 16:30:49,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:30:49,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694077908] [2020-12-22 16:30:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:30:49,954 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 16:30:49,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260749699] [2020-12-22 16:30:49,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 16:31:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:31:00,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 20319 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 16:31:00,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 16:31:01,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 16:31:01,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694077908] [2020-12-22 16:31:01,453 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 16:31:01,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260749699] [2020-12-22 16:31:01,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:31:01,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:31:01,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886069839] [2020-12-22 16:31:01,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:31:01,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:31:01,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:31:01,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:31:01,465 INFO L87 Difference]: Start difference. First operand 10986 states and 15297 transitions. Second operand 3 states. [2020-12-22 16:31:01,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:31:01,982 INFO L93 Difference]: Finished difference Result 21945 states and 31029 transitions. [2020-12-22 16:31:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:31:01,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 350 [2020-12-22 16:31:01,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:31:02,099 INFO L225 Difference]: With dead ends: 21945 [2020-12-22 16:31:02,099 INFO L226 Difference]: Without dead ends: 10992 [2020-12-22 16:31:02,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:31:02,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10992 states. [2020-12-22 16:31:02,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10992 to 10992. [2020-12-22 16:31:02,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10992 states. [2020-12-22 16:31:02,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10992 states to 10992 states and 15305 transitions. [2020-12-22 16:31:02,719 INFO L78 Accepts]: Start accepts. Automaton has 10992 states and 15305 transitions. Word has length 350 [2020-12-22 16:31:02,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:31:02,720 INFO L481 AbstractCegarLoop]: Abstraction has 10992 states and 15305 transitions. [2020-12-22 16:31:02,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:31:02,720 INFO L276 IsEmpty]: Start isEmpty. Operand 10992 states and 15305 transitions. [2020-12-22 16:31:02,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-12-22 16:31:02,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:31:02,822 INFO L422 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] [2020-12-22 16:31:03,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 16:31:03,037 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:31:03,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:31:03,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1021925801, now seen corresponding path program 1 times [2020-12-22 16:31:03,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:31:03,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190340862] [2020-12-22 16:31:03,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:31:04,263 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 16:31:04,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7690910] [2020-12-22 16:31:04,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 16:31:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:31:14,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 20318 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 16:31:14,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 16:31:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 16:31:15,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190340862] [2020-12-22 16:31:15,129 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 16:31:15,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7690910] [2020-12-22 16:31:15,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:31:15,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 16:31:15,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036003748] [2020-12-22 16:31:15,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 16:31:15,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:31:15,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 16:31:15,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 16:31:15,203 INFO L87 Difference]: Start difference. First operand 10992 states and 15305 transitions. Second operand 5 states. [2020-12-22 16:31:15,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:31:15,768 INFO L93 Difference]: Finished difference Result 22399 states and 31729 transitions. [2020-12-22 16:31:15,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 16:31:15,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 350 [2020-12-22 16:31:15,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:31:15,858 INFO L225 Difference]: With dead ends: 22399 [2020-12-22 16:31:15,858 INFO L226 Difference]: Without dead ends: 11440 [2020-12-22 16:31:15,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 16:31:16,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11440 states. [2020-12-22 16:31:16,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11440 to 11000. [2020-12-22 16:31:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11000 states. [2020-12-22 16:31:16,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11000 states to 11000 states and 15315 transitions. [2020-12-22 16:31:16,439 INFO L78 Accepts]: Start accepts. Automaton has 11000 states and 15315 transitions. Word has length 350 [2020-12-22 16:31:16,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:31:16,441 INFO L481 AbstractCegarLoop]: Abstraction has 11000 states and 15315 transitions. [2020-12-22 16:31:16,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 16:31:16,442 INFO L276 IsEmpty]: Start isEmpty. Operand 11000 states and 15315 transitions. [2020-12-22 16:31:16,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-12-22 16:31:16,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:31:16,576 INFO L422 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] [2020-12-22 16:31:16,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 16:31:16,791 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:31:16,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:31:16,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1800330308, now seen corresponding path program 1 times [2020-12-22 16:31:16,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:31:16,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619341574] [2020-12-22 16:31:16,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:31:17,744 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 16:31:17,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781851184] [2020-12-22 16:31:17,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 16:31:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:31:28,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 20446 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-22 16:31:28,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 16:31:28,968 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 16:31:28,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619341574] [2020-12-22 16:31:28,969 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 16:31:28,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781851184] [2020-12-22 16:31:28,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:31:28,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 16:31:28,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760155680] [2020-12-22 16:31:28,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 16:31:28,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:31:28,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 16:31:28,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-12-22 16:31:28,972 INFO L87 Difference]: Start difference. First operand 11000 states and 15315 transitions. Second operand 12 states. [2020-12-22 16:31:30,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:31:30,788 INFO L93 Difference]: Finished difference Result 22014 states and 30643 transitions. [2020-12-22 16:31:30,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 16:31:30,789 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 359 [2020-12-22 16:31:30,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:31:30,864 INFO L225 Difference]: With dead ends: 22014 [2020-12-22 16:31:30,865 INFO L226 Difference]: Without dead ends: 10998 [2020-12-22 16:31:30,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2020-12-22 16:31:30,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10998 states. [2020-12-22 16:31:31,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10998 to 10998. [2020-12-22 16:31:31,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10998 states. [2020-12-22 16:31:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10998 states to 10998 states and 15310 transitions. [2020-12-22 16:31:31,442 INFO L78 Accepts]: Start accepts. Automaton has 10998 states and 15310 transitions. Word has length 359 [2020-12-22 16:31:31,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:31:31,443 INFO L481 AbstractCegarLoop]: Abstraction has 10998 states and 15310 transitions. [2020-12-22 16:31:31,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 16:31:31,443 INFO L276 IsEmpty]: Start isEmpty. Operand 10998 states and 15310 transitions. [2020-12-22 16:31:31,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-12-22 16:31:31,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:31:31,520 INFO L422 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] [2020-12-22 16:31:31,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 16:31:31,735 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:31:31,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:31:31,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1969844751, now seen corresponding path program 1 times [2020-12-22 16:31:31,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:31:31,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462137823] [2020-12-22 16:31:31,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:31:32,539 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 16:31:32,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127204867] [2020-12-22 16:31:32,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 16:31:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:31:43,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 20487 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 16:31:43,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 16:31:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 16:31:44,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462137823] [2020-12-22 16:31:44,048 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 16:31:44,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127204867] [2020-12-22 16:31:44,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:31:44,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 16:31:44,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366463596] [2020-12-22 16:31:44,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 16:31:44,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:31:44,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 16:31:44,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 16:31:44,051 INFO L87 Difference]: Start difference. First operand 10998 states and 15310 transitions. Second operand 5 states. [2020-12-22 16:31:44,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:31:44,600 INFO L93 Difference]: Finished difference Result 21986 states and 30609 transitions. [2020-12-22 16:31:44,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 16:31:44,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 363 [2020-12-22 16:31:44,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:31:44,668 INFO L225 Difference]: With dead ends: 21986 [2020-12-22 16:31:44,668 INFO L226 Difference]: Without dead ends: 10998 [2020-12-22 16:31:44,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 16:31:44,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10998 states. [2020-12-22 16:31:45,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10998 to 10998. [2020-12-22 16:31:45,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10998 states. [2020-12-22 16:31:45,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10998 states to 10998 states and 15309 transitions. [2020-12-22 16:31:45,078 INFO L78 Accepts]: Start accepts. Automaton has 10998 states and 15309 transitions. Word has length 363 [2020-12-22 16:31:45,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:31:45,079 INFO L481 AbstractCegarLoop]: Abstraction has 10998 states and 15309 transitions. [2020-12-22 16:31:45,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 16:31:45,079 INFO L276 IsEmpty]: Start isEmpty. Operand 10998 states and 15309 transitions. [2020-12-22 16:31:45,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-12-22 16:31:45,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:31:45,147 INFO L422 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] [2020-12-22 16:31:45,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 16:31:45,362 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:31:45,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:31:45,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1685153327, now seen corresponding path program 1 times [2020-12-22 16:31:45,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:31:45,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116144731] [2020-12-22 16:31:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:31:46,543 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 16:31:46,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363607951] [2020-12-22 16:31:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 16:32:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:32:04,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 20488 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 16:32:04,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 16:32:04,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 16:32:04,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116144731] [2020-12-22 16:32:04,499 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 16:32:04,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363607951] [2020-12-22 16:32:04,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:32:04,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 16:32:04,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421206708] [2020-12-22 16:32:04,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 16:32:04,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:32:04,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 16:32:04,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 16:32:04,501 INFO L87 Difference]: Start difference. First operand 10998 states and 15309 transitions. Second operand 10 states. [2020-12-22 16:32:05,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:32:05,176 INFO L93 Difference]: Finished difference Result 21977 states and 31159 transitions. [2020-12-22 16:32:05,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 16:32:05,177 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 363 [2020-12-22 16:32:05,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:32:05,348 INFO L225 Difference]: With dead ends: 21977 [2020-12-22 16:32:05,349 INFO L226 Difference]: Without dead ends: 11010 [2020-12-22 16:32:05,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-12-22 16:32:05,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11010 states. [2020-12-22 16:32:05,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11010 to 11010. [2020-12-22 16:32:05,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11010 states. [2020-12-22 16:32:05,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11010 states to 11010 states and 15411 transitions. [2020-12-22 16:32:05,736 INFO L78 Accepts]: Start accepts. Automaton has 11010 states and 15411 transitions. Word has length 363 [2020-12-22 16:32:05,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:32:05,736 INFO L481 AbstractCegarLoop]: Abstraction has 11010 states and 15411 transitions. [2020-12-22 16:32:05,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 16:32:05,737 INFO L276 IsEmpty]: Start isEmpty. Operand 11010 states and 15411 transitions. [2020-12-22 16:32:05,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-12-22 16:32:05,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:32:05,809 INFO L422 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] [2020-12-22 16:32:06,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 16:32:06,025 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:32:06,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:32:06,026 INFO L82 PathProgramCache]: Analyzing trace with hash 151762930, now seen corresponding path program 1 times [2020-12-22 16:32:06,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:32:06,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093383006] [2020-12-22 16:32:06,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY