./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.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 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 15:48:09,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 15:48:09,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 15:48:09,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 15:48:09,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 15:48:09,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 15:48:09,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 15:48:09,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 15:48:09,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 15:48:09,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 15:48:09,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 15:48:09,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 15:48:09,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 15:48:09,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 15:48:09,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 15:48:09,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 15:48:09,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 15:48:09,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 15:48:09,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 15:48:09,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 15:48:09,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 15:48:09,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 15:48:09,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 15:48:09,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 15:48:09,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 15:48:09,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 15:48:09,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 15:48:09,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 15:48:09,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 15:48:09,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 15:48:09,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 15:48:09,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 15:48:09,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 15:48:09,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 15:48:09,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 15:48:09,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 15:48:09,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 15:48:09,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 15:48:09,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 15:48:09,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 15:48:09,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 15:48:09,782 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 15:48:09,802 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 15:48:09,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 15:48:09,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 15:48:09,805 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 15:48:09,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 15:48:09,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 15:48:09,807 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 15:48:09,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 15:48:09,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 15:48:09,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 15:48:09,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 15:48:09,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 15:48:09,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 15:48:09,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 15:48:09,808 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 15:48:09,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 15:48:09,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 15:48:09,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 15:48:09,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 15:48:09,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:48:09,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 15:48:09,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 15:48:09,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 15:48:09,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 15:48:09,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 15:48:09,810 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 15:48:09,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 15:48:09,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 15:48:09,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 15:48:09,811 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce [2021-11-07 15:48:09,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 15:48:10,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 15:48:10,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 15:48:10,019 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 15:48:10,020 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 15:48:10,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-11-07 15:48:10,086 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/855158877/79cc48bf367542b1816c1df6334678de/FLAGa4d199033 [2021-11-07 15:48:10,664 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 15:48:10,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-11-07 15:48:10,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/855158877/79cc48bf367542b1816c1df6334678de/FLAGa4d199033 [2021-11-07 15:48:11,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/855158877/79cc48bf367542b1816c1df6334678de [2021-11-07 15:48:11,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 15:48:11,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 15:48:11,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 15:48:11,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 15:48:11,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 15:48:11,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:48:11" (1/1) ... [2021-11-07 15:48:11,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a1412d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:11, skipping insertion in model container [2021-11-07 15:48:11,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:48:11" (1/1) ... [2021-11-07 15:48:11,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 15:48:11,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 15:48:12,287 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-11-07 15:48:12,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:48:12,382 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 15:48:12,622 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-11-07 15:48:12,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:48:12,723 INFO L208 MainTranslator]: Completed translation [2021-11-07 15:48:12,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:12 WrapperNode [2021-11-07 15:48:12,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 15:48:12,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 15:48:12,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 15:48:12,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 15:48:12,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:12" (1/1) ... [2021-11-07 15:48:12,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:12" (1/1) ... [2021-11-07 15:48:13,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 15:48:13,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 15:48:13,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 15:48:13,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 15:48:13,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:12" (1/1) ... [2021-11-07 15:48:13,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:12" (1/1) ... [2021-11-07 15:48:13,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:12" (1/1) ... [2021-11-07 15:48:13,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:12" (1/1) ... [2021-11-07 15:48:13,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:12" (1/1) ... [2021-11-07 15:48:14,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:12" (1/1) ... [2021-11-07 15:48:14,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:12" (1/1) ... [2021-11-07 15:48:14,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 15:48:14,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 15:48:14,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 15:48:14,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 15:48:14,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:12" (1/1) ... [2021-11-07 15:48:14,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:48:14,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:48:14,340 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) [2021-11-07 15:48:14,353 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 [2021-11-07 15:48:14,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 15:48:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 15:48:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 15:48:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 15:48:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 15:48:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 15:48:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 15:48:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 15:48:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 15:48:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 15:48:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 15:48:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 15:48:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 15:48:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 15:48:14,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 15:48:25,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 15:48:25,003 INFO L299 CfgBuilder]: Removed 6500 assume(true) statements. [2021-11-07 15:48:25,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:48:25 BoogieIcfgContainer [2021-11-07 15:48:25,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 15:48:25,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 15:48:25,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 15:48:25,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 15:48:25,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:48:11" (1/3) ... [2021-11-07 15:48:25,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c7cd07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:48:25, skipping insertion in model container [2021-11-07 15:48:25,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:12" (2/3) ... [2021-11-07 15:48:25,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c7cd07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:48:25, skipping insertion in model container [2021-11-07 15:48:25,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:48:25" (3/3) ... [2021-11-07 15:48:25,017 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-11-07 15:48:25,024 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 15:48:25,024 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-11-07 15:48:25,077 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 15:48:25,081 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 [2021-11-07 15:48:25,081 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-11-07 15:48:25,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 5295 states, 5271 states have (on average 1.3200531208499335) internal successors, (6958), 5294 states have internal predecessors, (6958), 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) [2021-11-07 15:48:25,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 15:48:25,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:48:25,160 INFO L514 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] [2021-11-07 15:48:25,161 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 15:48:25,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:48:25,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1578018257, now seen corresponding path program 1 times [2021-11-07 15:48:25,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:48:25,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547904627] [2021-11-07 15:48:25,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:48:25,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:48:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:48:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:48:25,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:48:25,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547904627] [2021-11-07 15:48:25,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547904627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:48:25,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:48:25,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:48:25,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003862197] [2021-11-07 15:48:25,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:48:25,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 15:48:25,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:48:25,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 15:48:25,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:48:25,559 INFO L87 Difference]: Start difference. First operand has 5295 states, 5271 states have (on average 1.3200531208499335) internal successors, (6958), 5294 states have internal predecessors, (6958), 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 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 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) [2021-11-07 15:48:25,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:48:25,828 INFO L93 Difference]: Finished difference Result 10496 states and 13791 transitions. [2021-11-07 15:48:25,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 15:48:25,831 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 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 43 [2021-11-07 15:48:25,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:48:25,859 INFO L225 Difference]: With dead ends: 10496 [2021-11-07 15:48:25,859 INFO L226 Difference]: Without dead ends: 5101 [2021-11-07 15:48:25,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:48:25,874 INFO L933 BasicCegarLoop]: 6746 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6746 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 15:48:25,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6746 Invalid, 0 Unknown, 0 Unchecked, 9.92ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 15:48:25,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2021-11-07 15:48:25,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 5101. [2021-11-07 15:48:25,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 5078 states have (on average 1.288499409216227) internal successors, (6543), 5100 states have internal predecessors, (6543), 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) [2021-11-07 15:48:26,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 6543 transitions. [2021-11-07 15:48:26,005 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 6543 transitions. Word has length 43 [2021-11-07 15:48:26,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:48:26,005 INFO L470 AbstractCegarLoop]: Abstraction has 5101 states and 6543 transitions. [2021-11-07 15:48:26,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 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) [2021-11-07 15:48:26,006 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 6543 transitions. [2021-11-07 15:48:26,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 15:48:26,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:48:26,008 INFO L514 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] [2021-11-07 15:48:26,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 15:48:26,008 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 15:48:26,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:48:26,009 INFO L85 PathProgramCache]: Analyzing trace with hash 716061479, now seen corresponding path program 1 times [2021-11-07 15:48:26,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:48:26,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409062496] [2021-11-07 15:48:26,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:48:26,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:48:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:48:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:48:26,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:48:26,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409062496] [2021-11-07 15:48:26,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409062496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:48:26,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:48:26,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:48:26,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535518119] [2021-11-07 15:48:26,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:48:26,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:48:26,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:48:26,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:48:26,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:48:26,169 INFO L87 Difference]: Start difference. First operand 5101 states and 6543 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-07 15:48:26,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:48:26,613 INFO L93 Difference]: Finished difference Result 19415 states and 24755 transitions. [2021-11-07 15:48:26,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:48:26,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-07 15:48:26,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:48:26,657 INFO L225 Difference]: With dead ends: 19415 [2021-11-07 15:48:26,657 INFO L226 Difference]: Without dead ends: 14340 [2021-11-07 15:48:26,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:48:26,677 INFO L933 BasicCegarLoop]: 11972 mSDtfsCounter, 9226 mSDsluCounter, 13776 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9226 SdHoareTripleChecker+Valid, 25748 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.86ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.89ms IncrementalHoareTripleChecker+Time [2021-11-07 15:48:26,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9226 Valid, 25748 Invalid, 119 Unknown, 0 Unchecked, 37.86ms Time], IncrementalHoareTripleChecker [27 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 108.89ms Time] [2021-11-07 15:48:26,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14340 states. [2021-11-07 15:48:26,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14340 to 7494. [2021-11-07 15:48:26,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7494 states, 7471 states have (on average 1.2776067460848615) internal successors, (9545), 7493 states have internal predecessors, (9545), 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) [2021-11-07 15:48:26,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7494 states to 7494 states and 9545 transitions. [2021-11-07 15:48:26,887 INFO L78 Accepts]: Start accepts. Automaton has 7494 states and 9545 transitions. Word has length 43 [2021-11-07 15:48:26,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:48:26,888 INFO L470 AbstractCegarLoop]: Abstraction has 7494 states and 9545 transitions. [2021-11-07 15:48:26,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-07 15:48:26,890 INFO L276 IsEmpty]: Start isEmpty. Operand 7494 states and 9545 transitions. [2021-11-07 15:48:26,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 15:48:26,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:48:26,895 INFO L514 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] [2021-11-07 15:48:26,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 15:48:26,895 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 15:48:26,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:48:26,897 INFO L85 PathProgramCache]: Analyzing trace with hash -268487873, now seen corresponding path program 1 times [2021-11-07 15:48:26,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:48:26,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198547704] [2021-11-07 15:48:26,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:48:26,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:48:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:48:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:48:27,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:48:27,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198547704] [2021-11-07 15:48:27,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198547704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:48:27,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:48:27,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:48:27,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694079774] [2021-11-07 15:48:27,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:48:27,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:48:27,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:48:27,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:48:27,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:48:27,070 INFO L87 Difference]: Start difference. First operand 7494 states and 9545 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-07 15:48:27,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:48:27,759 INFO L93 Difference]: Finished difference Result 31384 states and 39775 transitions. [2021-11-07 15:48:27,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:48:27,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-11-07 15:48:27,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:48:27,824 INFO L225 Difference]: With dead ends: 31384 [2021-11-07 15:48:27,824 INFO L226 Difference]: Without dead ends: 23916 [2021-11-07 15:48:27,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.86ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:48:27,847 INFO L933 BasicCegarLoop]: 9526 mSDtfsCounter, 11688 mSDsluCounter, 12998 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11688 SdHoareTripleChecker+Valid, 22524 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.51ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.31ms IncrementalHoareTripleChecker+Time [2021-11-07 15:48:27,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11688 Valid, 22524 Invalid, 109 Unknown, 0 Unchecked, 27.51ms Time], IncrementalHoareTripleChecker [34 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 82.31ms Time] [2021-11-07 15:48:27,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23916 states. [2021-11-07 15:48:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23916 to 14256. [2021-11-07 15:48:28,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14256 states, 14233 states have (on average 1.2751352490690648) internal successors, (18149), 14255 states have internal predecessors, (18149), 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) [2021-11-07 15:48:28,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14256 states to 14256 states and 18149 transitions. [2021-11-07 15:48:28,290 INFO L78 Accepts]: Start accepts. Automaton has 14256 states and 18149 transitions. Word has length 44 [2021-11-07 15:48:28,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:48:28,290 INFO L470 AbstractCegarLoop]: Abstraction has 14256 states and 18149 transitions. [2021-11-07 15:48:28,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-07 15:48:28,291 INFO L276 IsEmpty]: Start isEmpty. Operand 14256 states and 18149 transitions. [2021-11-07 15:48:28,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 15:48:28,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:48:28,293 INFO L514 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] [2021-11-07 15:48:28,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 15:48:28,293 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 15:48:28,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:48:28,294 INFO L85 PathProgramCache]: Analyzing trace with hash -724744518, now seen corresponding path program 1 times [2021-11-07 15:48:28,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:48:28,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63736795] [2021-11-07 15:48:28,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:48:28,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:48:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:48:28,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:48:28,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:48:28,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63736795] [2021-11-07 15:48:28,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63736795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:48:28,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:48:28,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:48:28,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551017766] [2021-11-07 15:48:28,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:48:28,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:48:28,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:48:28,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:48:28,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:48:28,392 INFO L87 Difference]: Start difference. First operand 14256 states and 18149 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-07 15:48:29,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:48:29,302 INFO L93 Difference]: Finished difference Result 60606 states and 76751 transitions. [2021-11-07 15:48:29,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:48:29,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-11-07 15:48:29,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:48:29,400 INFO L225 Difference]: With dead ends: 60606 [2021-11-07 15:48:29,401 INFO L226 Difference]: Without dead ends: 46376 [2021-11-07 15:48:29,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.23ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:48:29,435 INFO L933 BasicCegarLoop]: 9520 mSDtfsCounter, 11711 mSDsluCounter, 12998 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11711 SdHoareTripleChecker+Valid, 22518 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.40ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.74ms IncrementalHoareTripleChecker+Time [2021-11-07 15:48:29,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11711 Valid, 22518 Invalid, 109 Unknown, 0 Unchecked, 25.40ms Time], IncrementalHoareTripleChecker [34 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 85.74ms Time] [2021-11-07 15:48:29,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46376 states. [2021-11-07 15:48:30,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46376 to 27129. [2021-11-07 15:48:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27129 states, 27106 states have (on average 1.2723382276986646) internal successors, (34488), 27128 states have internal predecessors, (34488), 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) [2021-11-07 15:48:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27129 states to 27129 states and 34488 transitions. [2021-11-07 15:48:30,255 INFO L78 Accepts]: Start accepts. Automaton has 27129 states and 34488 transitions. Word has length 45 [2021-11-07 15:48:30,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:48:30,256 INFO L470 AbstractCegarLoop]: Abstraction has 27129 states and 34488 transitions. [2021-11-07 15:48:30,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-07 15:48:30,257 INFO L276 IsEmpty]: Start isEmpty. Operand 27129 states and 34488 transitions. [2021-11-07 15:48:30,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 15:48:30,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:48:30,259 INFO L514 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] [2021-11-07 15:48:30,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 15:48:30,260 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 15:48:30,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:48:30,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1983796430, now seen corresponding path program 1 times [2021-11-07 15:48:30,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:48:30,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931466762] [2021-11-07 15:48:30,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:48:30,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:48:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:48:30,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:48:30,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:48:30,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931466762] [2021-11-07 15:48:30,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931466762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:48:30,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:48:30,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:48:30,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420532837] [2021-11-07 15:48:30,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:48:30,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:48:30,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:48:30,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:48:30,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:48:30,375 INFO L87 Difference]: Start difference. First operand 27129 states and 34488 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-07 15:48:31,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:48:31,844 INFO L93 Difference]: Finished difference Result 117093 states and 148068 transitions. [2021-11-07 15:48:31,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:48:31,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2021-11-07 15:48:31,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:48:32,081 INFO L225 Difference]: With dead ends: 117093 [2021-11-07 15:48:32,082 INFO L226 Difference]: Without dead ends: 89990 [2021-11-07 15:48:32,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.18ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:48:32,160 INFO L933 BasicCegarLoop]: 9514 mSDtfsCounter, 11734 mSDsluCounter, 12998 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11734 SdHoareTripleChecker+Valid, 22512 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.78ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.87ms IncrementalHoareTripleChecker+Time [2021-11-07 15:48:32,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11734 Valid, 22512 Invalid, 109 Unknown, 0 Unchecked, 20.78ms Time], IncrementalHoareTripleChecker [34 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 121.87ms Time] [2021-11-07 15:48:32,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89990 states. [2021-11-07 15:48:33,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89990 to 51570. [2021-11-07 15:48:33,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51570 states, 51547 states have (on average 1.2691718237724794) internal successors, (65422), 51569 states have internal predecessors, (65422), 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) [2021-11-07 15:48:33,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51570 states to 51570 states and 65422 transitions. [2021-11-07 15:48:33,937 INFO L78 Accepts]: Start accepts. Automaton has 51570 states and 65422 transitions. Word has length 46 [2021-11-07 15:48:33,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:48:33,941 INFO L470 AbstractCegarLoop]: Abstraction has 51570 states and 65422 transitions. [2021-11-07 15:48:33,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-07 15:48:33,942 INFO L276 IsEmpty]: Start isEmpty. Operand 51570 states and 65422 transitions. [2021-11-07 15:48:33,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 15:48:33,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:48:33,945 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 15:48:33,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 15:48:33,946 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 15:48:33,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:48:33,947 INFO L85 PathProgramCache]: Analyzing trace with hash 875621550, now seen corresponding path program 1 times [2021-11-07 15:48:33,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:48:33,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104386092] [2021-11-07 15:48:33,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:48:33,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:48:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:48:34,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 15:48:34,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:48:34,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104386092] [2021-11-07 15:48:34,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104386092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:48:34,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:48:34,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 15:48:34,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375659413] [2021-11-07 15:48:34,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:48:34,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:48:34,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:48:34,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:48:34,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:48:34,070 INFO L87 Difference]: Start difference. First operand 51570 states and 65422 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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) [2021-11-07 15:48:36,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:48:36,601 INFO L93 Difference]: Finished difference Result 168638 states and 213388 transitions. [2021-11-07 15:48:36,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 15:48:36,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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 51 [2021-11-07 15:48:36,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:48:36,839 INFO L225 Difference]: With dead ends: 168638 [2021-11-07 15:48:36,839 INFO L226 Difference]: Without dead ends: 117094 [2021-11-07 15:48:37,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 17.00ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 15:48:37,119 INFO L933 BasicCegarLoop]: 12174 mSDtfsCounter, 17671 mSDsluCounter, 27753 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17671 SdHoareTripleChecker+Valid, 39927 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.84ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 126.40ms IncrementalHoareTripleChecker+Time [2021-11-07 15:48:37,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17671 Valid, 39927 Invalid, 205 Unknown, 0 Unchecked, 35.84ms Time], IncrementalHoareTripleChecker [48 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 126.40ms Time] [2021-11-07 15:48:37,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117094 states. [2021-11-07 15:48:39,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117094 to 51610. [2021-11-07 15:48:39,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51610 states, 51587 states have (on average 1.2689631108612636) internal successors, (65462), 51609 states have internal predecessors, (65462), 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) [2021-11-07 15:48:39,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51610 states to 51610 states and 65462 transitions. [2021-11-07 15:48:39,198 INFO L78 Accepts]: Start accepts. Automaton has 51610 states and 65462 transitions. Word has length 51 [2021-11-07 15:48:39,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:48:39,198 INFO L470 AbstractCegarLoop]: Abstraction has 51610 states and 65462 transitions. [2021-11-07 15:48:39,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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) [2021-11-07 15:48:39,199 INFO L276 IsEmpty]: Start isEmpty. Operand 51610 states and 65462 transitions. [2021-11-07 15:48:39,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 15:48:39,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:48:39,200 INFO L514 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] [2021-11-07 15:48:39,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 15:48:39,201 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 15:48:39,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:48:39,201 INFO L85 PathProgramCache]: Analyzing trace with hash 837480967, now seen corresponding path program 1 times [2021-11-07 15:48:39,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:48:39,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136541212] [2021-11-07 15:48:39,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:48:39,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:48:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:48:39,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:48:39,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:48:39,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136541212] [2021-11-07 15:48:39,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136541212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:48:39,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:48:39,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:48:39,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106323984] [2021-11-07 15:48:39,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:48:39,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:48:39,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:48:39,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:48:39,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:48:39,296 INFO L87 Difference]: Start difference. First operand 51610 states and 65462 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 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) [2021-11-07 15:48:40,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:48:40,661 INFO L93 Difference]: Finished difference Result 51610 states and 65462 transitions. [2021-11-07 15:48:40,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:48:40,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 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 54 [2021-11-07 15:48:40,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:48:40,746 INFO L225 Difference]: With dead ends: 51610 [2021-11-07 15:48:40,746 INFO L226 Difference]: Without dead ends: 51588 [2021-11-07 15:48:40,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:48:40,767 INFO L933 BasicCegarLoop]: 6510 mSDtfsCounter, 3011 mSDsluCounter, 3418 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3011 SdHoareTripleChecker+Valid, 9928 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.04ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.21ms IncrementalHoareTripleChecker+Time [2021-11-07 15:48:40,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3011 Valid, 9928 Invalid, 61 Unknown, 0 Unchecked, 8.04ms Time], IncrementalHoareTripleChecker [18 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 66.21ms Time] [2021-11-07 15:48:40,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51588 states. [2021-11-07 15:48:42,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51588 to 51588. [2021-11-07 15:48:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51588 states, 51576 states have (on average 1.2664611447184737) internal successors, (65319), 51587 states have internal predecessors, (65319), 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) [2021-11-07 15:48:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51588 states to 51588 states and 65319 transitions. [2021-11-07 15:48:42,207 INFO L78 Accepts]: Start accepts. Automaton has 51588 states and 65319 transitions. Word has length 54 [2021-11-07 15:48:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:48:42,207 INFO L470 AbstractCegarLoop]: Abstraction has 51588 states and 65319 transitions. [2021-11-07 15:48:42,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 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) [2021-11-07 15:48:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 51588 states and 65319 transitions. [2021-11-07 15:48:42,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 15:48:42,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:48:42,212 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 15:48:42,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 15:48:42,213 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 15:48:42,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:48:42,213 INFO L85 PathProgramCache]: Analyzing trace with hash -168317315, now seen corresponding path program 1 times [2021-11-07 15:48:42,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:48:42,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468377148] [2021-11-07 15:48:42,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:48:42,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:48:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:48:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:48:42,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:48:42,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468377148] [2021-11-07 15:48:42,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468377148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:48:42,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:48:42,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:48:42,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186561797] [2021-11-07 15:48:42,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:48:42,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:48:42,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:48:42,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:48:42,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:48:42,283 INFO L87 Difference]: Start difference. First operand 51588 states and 65319 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-11-07 15:48:44,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:48:44,566 INFO L93 Difference]: Finished difference Result 132222 states and 167446 transitions. [2021-11-07 15:48:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:48:44,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2021-11-07 15:48:44,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:48:44,701 INFO L225 Difference]: With dead ends: 132222 [2021-11-07 15:48:44,701 INFO L226 Difference]: Without dead ends: 80660 [2021-11-07 15:48:44,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:48:44,760 INFO L933 BasicCegarLoop]: 9980 mSDtfsCounter, 4711 mSDsluCounter, 6407 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4711 SdHoareTripleChecker+Valid, 16387 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.53ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.25ms IncrementalHoareTripleChecker+Time [2021-11-07 15:48:44,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4711 Valid, 16387 Invalid, 85 Unknown, 0 Unchecked, 11.53ms Time], IncrementalHoareTripleChecker [7 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 72.25ms Time] [2021-11-07 15:48:44,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80660 states. [2021-11-07 15:48:47,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80660 to 75868. [2021-11-07 15:48:47,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75868 states, 75856 states have (on average 1.2746124235393377) internal successors, (96687), 75867 states have internal predecessors, (96687), 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) [2021-11-07 15:48:47,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75868 states to 75868 states and 96687 transitions. [2021-11-07 15:48:47,182 INFO L78 Accepts]: Start accepts. Automaton has 75868 states and 96687 transitions. Word has length 80 [2021-11-07 15:48:47,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:48:47,183 INFO L470 AbstractCegarLoop]: Abstraction has 75868 states and 96687 transitions. [2021-11-07 15:48:47,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-11-07 15:48:47,183 INFO L276 IsEmpty]: Start isEmpty. Operand 75868 states and 96687 transitions. [2021-11-07 15:48:47,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-07 15:48:47,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:48:47,190 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:48:47,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 15:48:47,190 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 15:48:47,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:48:47,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1447357583, now seen corresponding path program 1 times [2021-11-07 15:48:47,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:48:47,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340936755] [2021-11-07 15:48:47,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:48:47,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:48:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:48:47,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 15:48:47,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:48:47,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340936755] [2021-11-07 15:48:47,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340936755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:48:47,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:48:47,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:48:47,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560345269] [2021-11-07 15:48:47,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:48:47,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:48:47,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:48:47,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:48:47,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:48:47,288 INFO L87 Difference]: Start difference. First operand 75868 states and 96687 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2021-11-07 15:48:51,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:48:51,116 INFO L93 Difference]: Finished difference Result 220848 states and 282133 transitions. [2021-11-07 15:48:51,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:48:51,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 153 [2021-11-07 15:48:51,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:48:51,386 INFO L225 Difference]: With dead ends: 220848 [2021-11-07 15:48:51,386 INFO L226 Difference]: Without dead ends: 145006 [2021-11-07 15:48:51,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:48:51,477 INFO L933 BasicCegarLoop]: 11773 mSDtfsCounter, 6088 mSDsluCounter, 6481 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6088 SdHoareTripleChecker+Valid, 18254 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.38ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.81ms IncrementalHoareTripleChecker+Time [2021-11-07 15:48:51,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6088 Valid, 18254 Invalid, 14 Unknown, 0 Unchecked, 13.38ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 28.81ms Time] [2021-11-07 15:48:51,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145006 states.