./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-fealnx.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_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-fealnx.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 a3968cfb5889c9f3d7db25b50a6978e9654cfd81b83e3cceec28f5c030877771 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:11:13,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:11:13,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:11:13,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:11:13,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:11:13,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:11:13,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:11:13,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:11:13,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:11:13,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:11:13,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:11:13,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:11:13,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:11:13,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:11:13,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:11:13,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:11:13,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:11:13,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:11:13,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:11:13,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:11:13,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:11:13,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:11:13,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:11:13,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:11:13,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:11:13,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:11:13,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:11:13,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:11:13,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:11:13,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:11:13,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:11:13,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:11:13,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:11:13,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:11:13,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:11:13,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:11:13,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:11:13,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:11:13,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:11:13,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:11:13,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:11:13,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:11:13,803 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:11:13,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:11:13,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:11:13,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:11:13,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:11:13,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:11:13,805 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:11:13,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:11:13,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:11:13,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:11:13,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:11:13,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:11:13,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:11:13,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:11:13,807 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:11:13,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:11:13,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:11:13,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:11:13,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:11:13,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:11:13,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:11:13,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:11:13,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:11:13,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:11:13,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:11:13,809 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:11:13,809 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:11:13,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:11:13,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:11:13,811 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3968cfb5889c9f3d7db25b50a6978e9654cfd81b83e3cceec28f5c030877771 [2021-11-06 18:11:13,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:11:14,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:11:14,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:11:14,022 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:11:14,023 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:11:14,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-06 18:11:14,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c70e31ef1/30b3d45a76ae408da6eb6a06f5d5e27b/FLAG5b0f92170 [2021-11-06 18:11:14,650 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:11:14,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-06 18:11:14,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c70e31ef1/30b3d45a76ae408da6eb6a06f5d5e27b/FLAG5b0f92170 [2021-11-06 18:11:14,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c70e31ef1/30b3d45a76ae408da6eb6a06f5d5e27b [2021-11-06 18:11:14,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:11:14,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:11:14,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:11:14,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:11:14,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:11:14,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:11:14" (1/1) ... [2021-11-06 18:11:14,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ffb07b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:14, skipping insertion in model container [2021-11-06 18:11:14,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:11:14" (1/1) ... [2021-11-06 18:11:14,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:11:14,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:11:16,401 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_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-fealnx.cil.i[320486,320499] [2021-11-06 18:11:16,403 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_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-fealnx.cil.i[320631,320644] [2021-11-06 18:11:16,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:11:16,468 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:11:16,711 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_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-fealnx.cil.i[320486,320499] [2021-11-06 18:11:16,711 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_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-fealnx.cil.i[320631,320644] [2021-11-06 18:11:16,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:11:16,852 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:11:16,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:16 WrapperNode [2021-11-06 18:11:16,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:11:16,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:11:16,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:11:16,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:11:16,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:16" (1/1) ... [2021-11-06 18:11:16,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:16" (1/1) ... [2021-11-06 18:11:17,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:11:17,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:11:17,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:11:17,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:11:17,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:16" (1/1) ... [2021-11-06 18:11:17,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:16" (1/1) ... [2021-11-06 18:11:17,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:16" (1/1) ... [2021-11-06 18:11:17,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:16" (1/1) ... [2021-11-06 18:11:17,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:16" (1/1) ... [2021-11-06 18:11:17,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:16" (1/1) ... [2021-11-06 18:11:17,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:16" (1/1) ... [2021-11-06 18:11:17,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:11:17,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:11:17,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:11:17,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:11:17,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:16" (1/1) ... [2021-11-06 18:11:17,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:11:17,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:11:17,898 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 18:11:17,914 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 18:11:17,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:11:17,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:11:17,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:11:17,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:11:17,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:11:17,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:11:17,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:11:17,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:11:17,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:11:17,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:11:17,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:11:17,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:11:17,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:11:17,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:11:17,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:11:25,877 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:11:25,879 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 18:11:25,879 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:11:25,880 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:11:25,880 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:11:25,880 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:11:25,909 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:11:25,909 INFO L299 CfgBuilder]: Removed 3782 assume(true) statements. [2021-11-06 18:11:25,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:11:25 BoogieIcfgContainer [2021-11-06 18:11:25,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:11:25,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:11:25,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:11:25,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:11:25,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:11:14" (1/3) ... [2021-11-06 18:11:25,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a13d2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:11:25, skipping insertion in model container [2021-11-06 18:11:25,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:16" (2/3) ... [2021-11-06 18:11:25,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a13d2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:11:25, skipping insertion in model container [2021-11-06 18:11:25,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:11:25" (3/3) ... [2021-11-06 18:11:25,919 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-06 18:11:25,922 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:11:25,923 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-06 18:11:25,970 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:11:25,975 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 18:11:25,976 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-06 18:11:26,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 3583 states, 3572 states have (on average 1.3401455767077268) internal successors, (4787), 3582 states have internal predecessors, (4787), 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 18:11:26,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 18:11:26,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:26,044 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:26,044 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 18:11:26,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:26,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1143337837, now seen corresponding path program 1 times [2021-11-06 18:11:26,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:26,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705466850] [2021-11-06 18:11:26,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:26,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:26,594 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 18:11:26,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:26,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705466850] [2021-11-06 18:11:26,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705466850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:26,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:11:26,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:11:26,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696142493] [2021-11-06 18:11:26,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:26,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:26,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:26,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:11:26,616 INFO L87 Difference]: Start difference. First operand has 3583 states, 3572 states have (on average 1.3401455767077268) internal successors, (4787), 3582 states have internal predecessors, (4787), 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) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 18:11:29,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:29,129 INFO L93 Difference]: Finished difference Result 9911 states and 13262 transitions. [2021-11-06 18:11:29,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:29,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2021-11-06 18:11:29,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:29,166 INFO L225 Difference]: With dead ends: 9911 [2021-11-06 18:11:29,166 INFO L226 Difference]: Without dead ends: 6078 [2021-11-06 18:11:29,178 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:11:29,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6078 states. [2021-11-06 18:11:29,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6078 to 5897. [2021-11-06 18:11:29,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5897 states, 5886 states have (on average 1.3134556574923548) internal successors, (7731), 5896 states have internal predecessors, (7731), 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 18:11:29,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5897 states to 5897 states and 7731 transitions. [2021-11-06 18:11:29,424 INFO L78 Accepts]: Start accepts. Automaton has 5897 states and 7731 transitions. Word has length 62 [2021-11-06 18:11:29,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:29,426 INFO L470 AbstractCegarLoop]: Abstraction has 5897 states and 7731 transitions. [2021-11-06 18:11:29,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 18:11:29,428 INFO L276 IsEmpty]: Start isEmpty. Operand 5897 states and 7731 transitions. [2021-11-06 18:11:29,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 18:11:29,435 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:29,435 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:29,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:11:29,436 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 18:11:29,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:29,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1561654553, now seen corresponding path program 1 times [2021-11-06 18:11:29,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:29,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745199876] [2021-11-06 18:11:29,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:29,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:29,591 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 18:11:29,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:29,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745199876] [2021-11-06 18:11:29,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745199876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:29,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:11:29,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:11:29,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429528510] [2021-11-06 18:11:29,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:29,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:29,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:29,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:11:29,594 INFO L87 Difference]: Start difference. First operand 5897 states and 7731 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 18:11:32,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:32,053 INFO L93 Difference]: Finished difference Result 16499 states and 21609 transitions. [2021-11-06 18:11:32,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:32,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2021-11-06 18:11:32,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:32,088 INFO L225 Difference]: With dead ends: 16499 [2021-11-06 18:11:32,089 INFO L226 Difference]: Without dead ends: 10678 [2021-11-06 18:11:32,103 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:11:32,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10678 states. [2021-11-06 18:11:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10678 to 10432. [2021-11-06 18:11:32,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10432 states, 10421 states have (on average 1.3129258228576912) internal successors, (13682), 10431 states have internal predecessors, (13682), 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 18:11:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10432 states to 10432 states and 13682 transitions. [2021-11-06 18:11:32,339 INFO L78 Accepts]: Start accepts. Automaton has 10432 states and 13682 transitions. Word has length 68 [2021-11-06 18:11:32,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:32,339 INFO L470 AbstractCegarLoop]: Abstraction has 10432 states and 13682 transitions. [2021-11-06 18:11:32,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 18:11:32,340 INFO L276 IsEmpty]: Start isEmpty. Operand 10432 states and 13682 transitions. [2021-11-06 18:11:32,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 18:11:32,342 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:32,343 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:32,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:11:32,343 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 18:11:32,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:32,344 INFO L85 PathProgramCache]: Analyzing trace with hash 228350482, now seen corresponding path program 1 times [2021-11-06 18:11:32,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:32,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455767381] [2021-11-06 18:11:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:32,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:32,461 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 18:11:32,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:32,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455767381] [2021-11-06 18:11:32,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455767381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:32,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:11:32,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:11:32,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957359239] [2021-11-06 18:11:32,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:32,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:32,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:32,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:11:32,464 INFO L87 Difference]: Start difference. First operand 10432 states and 13682 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 18:11:35,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:35,017 INFO L93 Difference]: Finished difference Result 24432 states and 32108 transitions. [2021-11-06 18:11:35,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:35,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-11-06 18:11:35,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:35,071 INFO L225 Difference]: With dead ends: 24432 [2021-11-06 18:11:35,071 INFO L226 Difference]: Without dead ends: 14076 [2021-11-06 18:11:35,086 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:11:35,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14076 states. [2021-11-06 18:11:35,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14076 to 14046. [2021-11-06 18:11:35,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14046 states, 14035 states have (on average 1.312718204488778) internal successors, (18424), 14045 states have internal predecessors, (18424), 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 18:11:35,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14046 states to 14046 states and 18424 transitions. [2021-11-06 18:11:35,361 INFO L78 Accepts]: Start accepts. Automaton has 14046 states and 18424 transitions. Word has length 71 [2021-11-06 18:11:35,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:35,363 INFO L470 AbstractCegarLoop]: Abstraction has 14046 states and 18424 transitions. [2021-11-06 18:11:35,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 18:11:35,364 INFO L276 IsEmpty]: Start isEmpty. Operand 14046 states and 18424 transitions. [2021-11-06 18:11:35,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 18:11:35,367 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:35,367 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:11:35,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:11:35,367 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 18:11:35,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:35,368 INFO L85 PathProgramCache]: Analyzing trace with hash 968917594, now seen corresponding path program 1 times [2021-11-06 18:11:35,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:35,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097844572] [2021-11-06 18:11:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:35,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:35,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:11:35,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:35,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097844572] [2021-11-06 18:11:35,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097844572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:35,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:11:35,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:11:35,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566868133] [2021-11-06 18:11:35,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:35,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:35,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:35,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:11:35,524 INFO L87 Difference]: Start difference. First operand 14046 states and 18424 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 18:11:38,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:38,029 INFO L93 Difference]: Finished difference Result 41946 states and 55062 transitions. [2021-11-06 18:11:38,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:38,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2021-11-06 18:11:38,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:38,077 INFO L225 Difference]: With dead ends: 41946 [2021-11-06 18:11:38,078 INFO L226 Difference]: Without dead ends: 27976 [2021-11-06 18:11:38,099 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:11:38,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27976 states. [2021-11-06 18:11:38,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27976 to 27906. [2021-11-06 18:11:38,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27906 states, 27895 states have (on average 1.3134970424807313) internal successors, (36640), 27905 states have internal predecessors, (36640), 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 18:11:38,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27906 states to 27906 states and 36640 transitions. [2021-11-06 18:11:38,537 INFO L78 Accepts]: Start accepts. Automaton has 27906 states and 36640 transitions. Word has length 77 [2021-11-06 18:11:38,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:38,537 INFO L470 AbstractCegarLoop]: Abstraction has 27906 states and 36640 transitions. [2021-11-06 18:11:38,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 18:11:38,538 INFO L276 IsEmpty]: Start isEmpty. Operand 27906 states and 36640 transitions. [2021-11-06 18:11:38,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 18:11:38,541 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:38,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:38,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:11:38,541 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 18:11:38,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:38,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1094154520, now seen corresponding path program 1 times [2021-11-06 18:11:38,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:38,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555114536] [2021-11-06 18:11:38,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:38,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:38,669 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 18:11:38,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:38,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555114536] [2021-11-06 18:11:38,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555114536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:38,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:11:38,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:11:38,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381599276] [2021-11-06 18:11:38,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:38,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:38,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:38,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:11:38,672 INFO L87 Difference]: Start difference. First operand 27906 states and 36640 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 18:11:41,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:41,496 INFO L93 Difference]: Finished difference Result 77004 states and 101429 transitions. [2021-11-06 18:11:41,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:41,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2021-11-06 18:11:41,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:41,604 INFO L225 Difference]: With dead ends: 77004 [2021-11-06 18:11:41,605 INFO L226 Difference]: Without dead ends: 49174 [2021-11-06 18:11:41,659 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:11:41,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49174 states. [2021-11-06 18:11:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49174 to 48646. [2021-11-06 18:11:42,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48646 states, 48635 states have (on average 1.319461293307289) internal successors, (64172), 48645 states have internal predecessors, (64172), 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 18:11:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48646 states to 48646 states and 64172 transitions. [2021-11-06 18:11:42,768 INFO L78 Accepts]: Start accepts. Automaton has 48646 states and 64172 transitions. Word has length 84 [2021-11-06 18:11:42,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:42,768 INFO L470 AbstractCegarLoop]: Abstraction has 48646 states and 64172 transitions. [2021-11-06 18:11:42,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 18:11:42,769 INFO L276 IsEmpty]: Start isEmpty. Operand 48646 states and 64172 transitions. [2021-11-06 18:11:42,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 18:11:42,775 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:42,776 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-06 18:11:42,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 18:11:42,778 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 18:11:42,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:42,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1477356694, now seen corresponding path program 1 times [2021-11-06 18:11:42,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:42,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212716354] [2021-11-06 18:11:42,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:42,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 18:11:42,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:42,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212716354] [2021-11-06 18:11:42,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212716354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:42,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:11:42,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:11:42,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645486592] [2021-11-06 18:11:42,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:42,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:42,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:42,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:11:42,884 INFO L87 Difference]: Start difference. First operand 48646 states and 64172 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 18:11:45,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:45,992 INFO L93 Difference]: Finished difference Result 97267 states and 128321 transitions. [2021-11-06 18:11:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:45,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 89 [2021-11-06 18:11:45,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:46,082 INFO L225 Difference]: With dead ends: 97267 [2021-11-06 18:11:46,082 INFO L226 Difference]: Without dead ends: 48697 [2021-11-06 18:11:46,150 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:11:46,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48697 states. [2021-11-06 18:11:46,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48697 to 48697. [2021-11-06 18:11:46,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48697 states, 48686 states have (on average 1.3192704268167441) internal successors, (64230), 48696 states have internal predecessors, (64230), 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 18:11:47,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48697 states to 48697 states and 64230 transitions. [2021-11-06 18:11:47,014 INFO L78 Accepts]: Start accepts. Automaton has 48697 states and 64230 transitions. Word has length 89 [2021-11-06 18:11:47,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:47,015 INFO L470 AbstractCegarLoop]: Abstraction has 48697 states and 64230 transitions. [2021-11-06 18:11:47,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 18:11:47,015 INFO L276 IsEmpty]: Start isEmpty. Operand 48697 states and 64230 transitions. [2021-11-06 18:11:47,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 18:11:47,018 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:47,018 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:11:47,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 18:11:47,019 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 18:11:47,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:47,019 INFO L85 PathProgramCache]: Analyzing trace with hash 337540895, now seen corresponding path program 1 times [2021-11-06 18:11:47,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:47,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597821937] [2021-11-06 18:11:47,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:47,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:11:47,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:47,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597821937] [2021-11-06 18:11:47,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597821937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:47,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:11:47,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:11:47,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193333372] [2021-11-06 18:11:47,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:47,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:47,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:47,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:11:47,134 INFO L87 Difference]: Start difference. First operand 48697 states and 64230 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 18:11:50,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:50,345 INFO L93 Difference]: Finished difference Result 108425 states and 143276 transitions. [2021-11-06 18:11:50,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:50,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2021-11-06 18:11:50,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:50,441 INFO L225 Difference]: With dead ends: 108425 [2021-11-06 18:11:50,442 INFO L226 Difference]: Without dead ends: 59855 [2021-11-06 18:11:50,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:11:50,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59855 states. [2021-11-06 18:11:51,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59855 to 59777. [2021-11-06 18:11:51,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59777 states, 59766 states have (on average 1.3197804771943915) internal successors, (78878), 59776 states have internal predecessors, (78878), 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 18:11:51,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59777 states to 59777 states and 78878 transitions. [2021-11-06 18:11:51,608 INFO L78 Accepts]: Start accepts. Automaton has 59777 states and 78878 transitions. Word has length 103 [2021-11-06 18:11:51,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:51,608 INFO L470 AbstractCegarLoop]: Abstraction has 59777 states and 78878 transitions. [2021-11-06 18:11:51,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 18:11:51,608 INFO L276 IsEmpty]: Start isEmpty. Operand 59777 states and 78878 transitions. [2021-11-06 18:11:51,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-06 18:11:51,611 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:51,611 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:11:51,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 18:11:51,611 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 18:11:51,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:51,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1534737798, now seen corresponding path program 1 times [2021-11-06 18:11:51,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:51,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919243408] [2021-11-06 18:11:51,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:51,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 18:11:51,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:51,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919243408] [2021-11-06 18:11:51,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919243408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:51,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:11:51,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:11:51,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313855391] [2021-11-06 18:11:51,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:51,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:51,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:51,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:11:51,741 INFO L87 Difference]: Start difference. First operand 59777 states and 78878 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 18:11:55,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:55,558 INFO L93 Difference]: Finished difference Result 177605 states and 234684 transitions. [2021-11-06 18:11:55,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:55,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 118 [2021-11-06 18:11:55,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:55,827 INFO L225 Difference]: With dead ends: 177605 [2021-11-06 18:11:55,828 INFO L226 Difference]: Without dead ends: 117955 [2021-11-06 18:11:55,934 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:11:56,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117955 states. [2021-11-06 18:11:58,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117955 to 117933. [2021-11-06 18:11:58,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117933 states, 117922 states have (on average 1.3211614457013958) internal successors, (155794), 117932 states have internal predecessors, (155794), 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 18:11:58,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117933 states to 117933 states and 155794 transitions. [2021-11-06 18:11:58,639 INFO L78 Accepts]: Start accepts. Automaton has 117933 states and 155794 transitions. Word has length 118 [2021-11-06 18:11:58,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:58,639 INFO L470 AbstractCegarLoop]: Abstraction has 117933 states and 155794 transitions. [2021-11-06 18:11:58,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 18:11:58,640 INFO L276 IsEmpty]: Start isEmpty. Operand 117933 states and 155794 transitions. [2021-11-06 18:11:58,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-06 18:11:58,643 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:58,647 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:11:58,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 18:11:58,648 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 18:11:58,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:58,648 INFO L85 PathProgramCache]: Analyzing trace with hash -974038020, now seen corresponding path program 1 times [2021-11-06 18:11:58,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:58,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770343371] [2021-11-06 18:11:58,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:58,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 18:11:58,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:58,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770343371] [2021-11-06 18:11:58,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770343371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:58,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:11:58,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:11:58,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853787214] [2021-11-06 18:11:58,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:58,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:58,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:58,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:11:58,749 INFO L87 Difference]: Start difference. First operand 117933 states and 155794 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 18:12:04,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:12:04,051 INFO L93 Difference]: Finished difference Result 293965 states and 388564 transitions. [2021-11-06 18:12:04,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:12:04,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 118 [2021-11-06 18:12:04,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:12:04,547 INFO L225 Difference]: With dead ends: 293965 [2021-11-06 18:12:04,547 INFO L226 Difference]: Without dead ends: 175715 [2021-11-06 18:12:04,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:12:04,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175715 states. [2021-11-06 18:12:07,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175715 to 175693. [2021-11-06 18:12:08,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175693 states, 175682 states have (on average 1.321894104119944) internal successors, (232233), 175692 states have internal predecessors, (232233), 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 18:12:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175693 states to 175693 states and 232233 transitions. [2021-11-06 18:12:08,430 INFO L78 Accepts]: Start accepts. Automaton has 175693 states and 232233 transitions. Word has length 118 [2021-11-06 18:12:08,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:12:08,430 INFO L470 AbstractCegarLoop]: Abstraction has 175693 states and 232233 transitions. [2021-11-06 18:12:08,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 18:12:08,430 INFO L276 IsEmpty]: Start isEmpty. Operand 175693 states and 232233 transitions. [2021-11-06 18:12:08,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-06 18:12:08,456 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:12:08,456 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:12:08,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 18:12:08,457 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 18:12:08,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:12:08,457 INFO L85 PathProgramCache]: Analyzing trace with hash 507732604, now seen corresponding path program 1 times [2021-11-06 18:12:08,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:12:08,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757808773] [2021-11-06 18:12:08,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:12:08,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:12:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:12:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-06 18:12:08,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:12:08,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757808773] [2021-11-06 18:12:08,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757808773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:12:08,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:12:08,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:12:08,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150455107] [2021-11-06 18:12:08,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:12:08,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:12:08,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:12:08,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:12:08,599 INFO L87 Difference]: Start difference. First operand 175693 states and 232233 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 18:12:15,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:12:15,100 INFO L93 Difference]: Finished difference Result 409293 states and 541106 transitions. [2021-11-06 18:12:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:12:15,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 132 [2021-11-06 18:12:15,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:12:15,711 INFO L225 Difference]: With dead ends: 409293 [2021-11-06 18:12:15,712 INFO L226 Difference]: Without dead ends: 233475 [2021-11-06 18:12:15,952 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:12:16,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233475 states. [2021-11-06 18:12:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233475 to 175693. [2021-11-06 18:12:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175693 states, 175682 states have (on average 1.3218884120171674) internal successors, (232232), 175692 states have internal predecessors, (232232), 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 18:12:20,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175693 states to 175693 states and 232232 transitions. [2021-11-06 18:12:20,266 INFO L78 Accepts]: Start accepts. Automaton has 175693 states and 232232 transitions. Word has length 132 [2021-11-06 18:12:20,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:12:20,266 INFO L470 AbstractCegarLoop]: Abstraction has 175693 states and 232232 transitions. [2021-11-06 18:12:20,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 18:12:20,267 INFO L276 IsEmpty]: Start isEmpty. Operand 175693 states and 232232 transitions. [2021-11-06 18:12:20,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-06 18:12:20,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:12:20,271 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:12:20,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 18:12:20,271 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 18:12:20,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:12:20,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1068432382, now seen corresponding path program 1 times [2021-11-06 18:12:20,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:12:20,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122887341] [2021-11-06 18:12:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:12:20,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:12:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:12:20,409 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-06 18:12:20,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:12:20,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122887341] [2021-11-06 18:12:20,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122887341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:12:20,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:12:20,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:12:20,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763211375] [2021-11-06 18:12:20,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:12:20,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:12:20,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:12:20,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:12:20,411 INFO L87 Difference]: Start difference. First operand 175693 states and 232232 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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)