./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--hippi--rrunner.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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--hippi--rrunner.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 ed28fe99994604a1173e3d4f71ab5b1542eccb5293571b04f5dd99c12a84c046 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 22:27:22,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:27:22,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:27:22,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:27:22,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:27:22,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:27:22,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:27:22,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:27:22,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:27:22,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:27:22,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:27:22,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:27:22,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:27:22,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:27:22,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:27:22,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:27:22,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:27:22,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:27:22,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:27:22,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:27:22,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:27:22,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:27:22,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:27:22,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:27:22,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:27:22,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:27:22,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:27:22,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:27:22,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:27:22,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:27:22,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:27:22,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:27:22,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:27:22,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:27:22,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:27:22,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:27:22,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:27:22,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:27:22,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:27:22,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:27:22,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:27:22,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 22:27:22,270 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:27:22,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:27:22,271 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:27:22,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:27:22,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:27:22,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:27:22,272 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:27:22,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:27:22,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:27:22,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:27:22,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:27:22,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:27:22,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:27:22,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:27:22,274 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:27:22,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:27:22,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:27:22,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:27:22,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:27:22,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:27:22,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:27:22,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:27:22,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:27:22,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:27:22,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:27:22,276 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:27:22,276 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:27:22,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:27:22,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:27:22,277 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed28fe99994604a1173e3d4f71ab5b1542eccb5293571b04f5dd99c12a84c046 [2021-11-02 22:27:22,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:27:22,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:27:22,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:27:22,459 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:27:22,459 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:27:22,460 INFO L432 ainManager$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--hippi--rrunner.ko-entry_point.cil.out.i [2021-11-02 22:27:22,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89190e281/5d629b458e2e4875b53af72b8f097498/FLAG943169c99 [2021-11-02 22:27:23,124 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:27:23,126 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--hippi--rrunner.ko-entry_point.cil.out.i [2021-11-02 22:27:23,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89190e281/5d629b458e2e4875b53af72b8f097498/FLAG943169c99 [2021-11-02 22:27:23,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89190e281/5d629b458e2e4875b53af72b8f097498 [2021-11-02 22:27:23,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:27:23,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:27:23,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:27:23,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:27:23,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:27:23,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:27:23" (1/1) ... [2021-11-02 22:27:23,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a1c76e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:23, skipping insertion in model container [2021-11-02 22:27:23,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:27:23" (1/1) ... [2021-11-02 22:27:23,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:27:23,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:27:24,403 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i[275280,275293] [2021-11-02 22:27:24,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:27:24,468 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:27:24,703 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--hippi--rrunner.ko-entry_point.cil.out.i[275280,275293] [2021-11-02 22:27:24,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:27:24,806 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:27:24,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:24 WrapperNode [2021-11-02 22:27:24,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:27:24,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:27:24,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:27:24,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:27:24,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:24" (1/1) ... [2021-11-02 22:27:24,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:24" (1/1) ... [2021-11-02 22:27:25,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:27:25,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:27:25,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:27:25,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:27:25,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:24" (1/1) ... [2021-11-02 22:27:25,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:24" (1/1) ... [2021-11-02 22:27:25,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:24" (1/1) ... [2021-11-02 22:27:25,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:24" (1/1) ... [2021-11-02 22:27:25,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:24" (1/1) ... [2021-11-02 22:27:25,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:24" (1/1) ... [2021-11-02 22:27:25,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:24" (1/1) ... [2021-11-02 22:27:25,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:27:25,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:27:25,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:27:25,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:27:25,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:24" (1/1) ... [2021-11-02 22:27:25,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:27:25,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 22:27:25,763 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) [2021-11-02 22:27:25,779 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 [2021-11-02 22:27:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 22:27:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 22:27:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:27:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 22:27:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:27:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:27:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 22:27:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 22:27:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 22:27:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:27:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:27:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:27:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:27:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:27:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:27:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:27:28,357 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:27:28,358 INFO L299 CfgBuilder]: Removed 3230 assume(true) statements. [2021-11-02 22:27:28,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:27:28 BoogieIcfgContainer [2021-11-02 22:27:28,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:27:28,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:27:28,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:27:28,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:27:28,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:27:23" (1/3) ... [2021-11-02 22:27:28,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c92038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:27:28, skipping insertion in model container [2021-11-02 22:27:28,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:24" (2/3) ... [2021-11-02 22:27:28,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c92038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:27:28, skipping insertion in model container [2021-11-02 22:27:28,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:27:28" (3/3) ... [2021-11-02 22:27:28,368 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2021-11-02 22:27:28,371 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:27:28,371 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-02 22:27:28,419 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:27:28,424 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 [2021-11-02 22:27:28,424 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-02 22:27:28,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 2512 states, 2491 states have (on average 1.3147330389401846) internal successors, (3275), 2511 states have internal predecessors, (3275), 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) [2021-11-02 22:27:28,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:27:28,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 22:27:28,493 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] [2021-11-02 22:27:28,493 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 22:27:28,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:28,497 INFO L85 PathProgramCache]: Analyzing trace with hash -241596489, now seen corresponding path program 1 times [2021-11-02 22:27:28,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:28,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457308506] [2021-11-02 22:27:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:28,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:28,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:28,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457308506] [2021-11-02 22:27:28,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457308506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:27:28,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:27:28,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:27:28,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411436788] [2021-11-02 22:27:28,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:27:28,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:28,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:27:28,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:27:28,850 INFO L87 Difference]: Start difference. First operand has 2512 states, 2491 states have (on average 1.3147330389401846) internal successors, (3275), 2511 states have internal predecessors, (3275), 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 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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) [2021-11-02 22:27:32,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:32,288 INFO L93 Difference]: Finished difference Result 5020 states and 6545 transitions. [2021-11-02 22:27:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:27:32,291 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 38 [2021-11-02 22:27:32,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:32,321 INFO L225 Difference]: With dead ends: 5020 [2021-11-02 22:27:32,321 INFO L226 Difference]: Without dead ends: 2468 [2021-11-02 22:27:32,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:27:32,330 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2706.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 3183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.34ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3299.92ms IncrementalHoareTripleChecker+Time [2021-11-02 22:27:32,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 3183 Unknown, 0 Unchecked, 6.34ms Time], IncrementalHoareTripleChecker [0 Valid, 3183 Invalid, 0 Unknown, 0 Unchecked, 3299.92ms Time] [2021-11-02 22:27:32,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2021-11-02 22:27:32,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 2468. [2021-11-02 22:27:32,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2448 states have (on average 1.2818627450980393) internal successors, (3138), 2467 states have internal predecessors, (3138), 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) [2021-11-02 22:27:32,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3138 transitions. [2021-11-02 22:27:32,431 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3138 transitions. Word has length 38 [2021-11-02 22:27:32,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:32,431 INFO L470 AbstractCegarLoop]: Abstraction has 2468 states and 3138 transitions. [2021-11-02 22:27:32,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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) [2021-11-02 22:27:32,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3138 transitions. [2021-11-02 22:27:32,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:27:32,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 22:27:32,435 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] [2021-11-02 22:27:32,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:27:32,435 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 22:27:32,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:32,436 INFO L85 PathProgramCache]: Analyzing trace with hash -266212417, now seen corresponding path program 1 times [2021-11-02 22:27:32,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:32,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331782795] [2021-11-02 22:27:32,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:32,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:32,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:32,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:32,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331782795] [2021-11-02 22:27:32,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331782795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:27:32,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:27:32,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:27:32,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916863144] [2021-11-02 22:27:32,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:27:32,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:32,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:27:32,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:27:32,620 INFO L87 Difference]: Start difference. First operand 2468 states and 3138 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-11-02 22:27:38,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:38,142 INFO L93 Difference]: Finished difference Result 4918 states and 6259 transitions. [2021-11-02 22:27:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:27:38,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2021-11-02 22:27:38,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:38,150 INFO L225 Difference]: With dead ends: 4918 [2021-11-02 22:27:38,150 INFO L226 Difference]: Without dead ends: 2470 [2021-11-02 22:27:38,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:27:38,159 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 3120 mSDsCounter, 0 mSdLazyCounter, 6274 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4452.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.80ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5291.92ms IncrementalHoareTripleChecker+Time [2021-11-02 22:27:38,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 6276 Unknown, 0 Unchecked, 13.80ms Time], IncrementalHoareTripleChecker [2 Valid, 6274 Invalid, 0 Unknown, 0 Unchecked, 5291.92ms Time] [2021-11-02 22:27:38,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-11-02 22:27:38,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2470. [2021-11-02 22:27:38,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 2450 states have (on average 1.2816326530612245) internal successors, (3140), 2469 states have internal predecessors, (3140), 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) [2021-11-02 22:27:38,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 3140 transitions. [2021-11-02 22:27:38,206 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 3140 transitions. Word has length 38 [2021-11-02 22:27:38,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:38,207 INFO L470 AbstractCegarLoop]: Abstraction has 2470 states and 3140 transitions. [2021-11-02 22:27:38,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-11-02 22:27:38,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 3140 transitions. [2021-11-02 22:27:38,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-02 22:27:38,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 22:27:38,212 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] [2021-11-02 22:27:38,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:27:38,213 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 22:27:38,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:38,213 INFO L85 PathProgramCache]: Analyzing trace with hash 454668801, now seen corresponding path program 1 times [2021-11-02 22:27:38,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:38,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870977619] [2021-11-02 22:27:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:38,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:27:38,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:38,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870977619] [2021-11-02 22:27:38,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870977619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:27:38,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:27:38,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:27:38,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875897592] [2021-11-02 22:27:38,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:27:38,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:38,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:27:38,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:27:38,338 INFO L87 Difference]: Start difference. First operand 2470 states and 3140 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-11-02 22:27:42,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 22:27:47,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 22:27:48,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:48,280 INFO L93 Difference]: Finished difference Result 6309 states and 8070 transitions. [2021-11-02 22:27:48,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:27:48,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2021-11-02 22:27:48,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:48,300 INFO L225 Difference]: With dead ends: 6309 [2021-11-02 22:27:48,300 INFO L226 Difference]: Without dead ends: 3866 [2021-11-02 22:27:48,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.45ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:27:48,309 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1857 mSDsluCounter, 3044 mSDsCounter, 0 mSdLazyCounter, 6221 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8673.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1857 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.47ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 6221 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9761.82ms IncrementalHoareTripleChecker+Time [2021-11-02 22:27:48,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1857 Valid, 0 Invalid, 6230 Unknown, 0 Unchecked, 11.47ms Time], IncrementalHoareTripleChecker [7 Valid, 6221 Invalid, 2 Unknown, 0 Unchecked, 9761.82ms Time] [2021-11-02 22:27:48,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2021-11-02 22:27:48,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3702. [2021-11-02 22:27:48,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3702 states, 3682 states have (on average 1.2957631721890277) internal successors, (4771), 3701 states have internal predecessors, (4771), 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) [2021-11-02 22:27:48,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3702 states to 3702 states and 4771 transitions. [2021-11-02 22:27:48,394 INFO L78 Accepts]: Start accepts. Automaton has 3702 states and 4771 transitions. Word has length 40 [2021-11-02 22:27:48,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:48,395 INFO L470 AbstractCegarLoop]: Abstraction has 3702 states and 4771 transitions. [2021-11-02 22:27:48,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-11-02 22:27:48,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3702 states and 4771 transitions. [2021-11-02 22:27:48,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 22:27:48,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 22:27:48,397 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] [2021-11-02 22:27:48,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:27:48,398 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 22:27:48,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:48,398 INFO L85 PathProgramCache]: Analyzing trace with hash -450927988, now seen corresponding path program 1 times [2021-11-02 22:27:48,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:48,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024228974] [2021-11-02 22:27:48,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:48,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:27:48,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:48,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024228974] [2021-11-02 22:27:48,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024228974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:27:48,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:27:48,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:27:48,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745383144] [2021-11-02 22:27:48,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:27:48,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:48,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:27:48,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:27:48,518 INFO L87 Difference]: Start difference. First operand 3702 states and 4771 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-02 22:27:55,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 22:28:01,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 22:28:03,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:03,697 INFO L93 Difference]: Finished difference Result 14941 states and 18924 transitions. [2021-11-02 22:28:03,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:28:03,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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 [2021-11-02 22:28:03,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:03,735 INFO L225 Difference]: With dead ends: 14941 [2021-11-02 22:28:03,736 INFO L226 Difference]: Without dead ends: 11266 [2021-11-02 22:28:03,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.72ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:28:03,749 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4871 mSDsluCounter, 6623 mSDsCounter, 0 mSdLazyCounter, 13840 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12966.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4871 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.28ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13840 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14796.59ms IncrementalHoareTripleChecker+Time [2021-11-02 22:28:03,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4871 Valid, 0 Invalid, 13853 Unknown, 0 Unchecked, 21.28ms Time], IncrementalHoareTripleChecker [11 Valid, 13840 Invalid, 2 Unknown, 0 Unchecked, 14796.59ms Time] [2021-11-02 22:28:03,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11266 states. [2021-11-02 22:28:03,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11266 to 5805. [2021-11-02 22:28:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5805 states, 5785 states have (on average 1.2701815038893691) internal successors, (7348), 5804 states have internal predecessors, (7348), 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) [2021-11-02 22:28:03,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5805 states to 5805 states and 7348 transitions. [2021-11-02 22:28:03,964 INFO L78 Accepts]: Start accepts. Automaton has 5805 states and 7348 transitions. Word has length 51 [2021-11-02 22:28:03,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:03,964 INFO L470 AbstractCegarLoop]: Abstraction has 5805 states and 7348 transitions. [2021-11-02 22:28:03,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-02 22:28:03,964 INFO L276 IsEmpty]: Start isEmpty. Operand 5805 states and 7348 transitions. [2021-11-02 22:28:03,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-02 22:28:03,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 22:28:03,965 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] [2021-11-02 22:28:03,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:28:03,966 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 22:28:03,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:03,966 INFO L85 PathProgramCache]: Analyzing trace with hash 995683373, now seen corresponding path program 1 times [2021-11-02 22:28:03,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:03,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704873486] [2021-11-02 22:28:03,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:03,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:28:04,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:04,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704873486] [2021-11-02 22:28:04,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704873486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:28:04,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:28:04,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:28:04,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996047766] [2021-11-02 22:28:04,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:28:04,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:04,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:28:04,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:28:04,099 INFO L87 Difference]: Start difference. First operand 5805 states and 7348 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-11-02 22:28:13,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:13,598 INFO L93 Difference]: Finished difference Result 25469 states and 31824 transitions. [2021-11-02 22:28:13,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:28:13,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2021-11-02 22:28:13,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:13,649 INFO L225 Difference]: With dead ends: 25469 [2021-11-02 22:28:13,649 INFO L226 Difference]: Without dead ends: 19691 [2021-11-02 22:28:13,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:28:13,663 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6913 mSDsluCounter, 6210 mSDsCounter, 0 mSdLazyCounter, 11411 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7718.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6913 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.15ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 11411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9048.93ms IncrementalHoareTripleChecker+Time [2021-11-02 22:28:13,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6913 Valid, 0 Invalid, 11424 Unknown, 0 Unchecked, 42.15ms Time], IncrementalHoareTripleChecker [13 Valid, 11411 Invalid, 0 Unknown, 0 Unchecked, 9048.93ms Time] [2021-11-02 22:28:13,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19691 states. [2021-11-02 22:28:13,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19691 to 11165. [2021-11-02 22:28:13,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11165 states, 11145 states have (on average 1.2662180349932706) internal successors, (14112), 11164 states have internal predecessors, (14112), 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) [2021-11-02 22:28:13,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11165 states to 11165 states and 14112 transitions. [2021-11-02 22:28:13,925 INFO L78 Accepts]: Start accepts. Automaton has 11165 states and 14112 transitions. Word has length 52 [2021-11-02 22:28:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:13,927 INFO L470 AbstractCegarLoop]: Abstraction has 11165 states and 14112 transitions. [2021-11-02 22:28:13,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-11-02 22:28:13,928 INFO L276 IsEmpty]: Start isEmpty. Operand 11165 states and 14112 transitions. [2021-11-02 22:28:13,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 22:28:13,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 22:28:13,930 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] [2021-11-02 22:28:13,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:28:13,930 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 22:28:13,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:13,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1404004000, now seen corresponding path program 1 times [2021-11-02 22:28:13,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:13,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715485826] [2021-11-02 22:28:13,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:13,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:14,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:28:14,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:14,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715485826] [2021-11-02 22:28:14,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715485826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:28:14,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:28:14,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:28:14,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060913000] [2021-11-02 22:28:14,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:28:14,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:14,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:28:14,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:28:14,064 INFO L87 Difference]: Start difference. First operand 11165 states and 14112 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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) [2021-11-02 22:28:21,290 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 22:28:27,298 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 22:28:28,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:28,424 INFO L93 Difference]: Finished difference Result 49589 states and 61904 transitions. [2021-11-02 22:28:28,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:28:28,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2021-11-02 22:28:28,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:28,500 INFO L225 Difference]: With dead ends: 49589 [2021-11-02 22:28:28,500 INFO L226 Difference]: Without dead ends: 38451 [2021-11-02 22:28:28,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:28:28,528 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6907 mSDsluCounter, 6405 mSDsCounter, 0 mSdLazyCounter, 11599 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11963.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6907 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.61ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 11599 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13591.24ms IncrementalHoareTripleChecker+Time [2021-11-02 22:28:28,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6907 Valid, 0 Invalid, 11614 Unknown, 0 Unchecked, 21.61ms Time], IncrementalHoareTripleChecker [13 Valid, 11599 Invalid, 2 Unknown, 0 Unchecked, 13591.24ms Time] [2021-11-02 22:28:28,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38451 states. [2021-11-02 22:28:29,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38451 to 21504. [2021-11-02 22:28:29,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21504 states, 21484 states have (on average 1.2616831130143362) internal successors, (27106), 21503 states have internal predecessors, (27106), 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) [2021-11-02 22:28:29,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21504 states to 21504 states and 27106 transitions. [2021-11-02 22:28:29,154 INFO L78 Accepts]: Start accepts. Automaton has 21504 states and 27106 transitions. Word has length 53 [2021-11-02 22:28:29,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:29,155 INFO L470 AbstractCegarLoop]: Abstraction has 21504 states and 27106 transitions. [2021-11-02 22:28:29,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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) [2021-11-02 22:28:29,155 INFO L276 IsEmpty]: Start isEmpty. Operand 21504 states and 27106 transitions. [2021-11-02 22:28:29,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 22:28:29,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 22:28:29,156 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] [2021-11-02 22:28:29,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:28:29,156 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 22:28:29,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:29,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1515099457, now seen corresponding path program 1 times [2021-11-02 22:28:29,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:29,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628502384] [2021-11-02 22:28:29,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:29,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:28:29,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:29,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628502384] [2021-11-02 22:28:29,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628502384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:28:29,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:28:29,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:28:29,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375134665] [2021-11-02 22:28:29,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:28:29,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:29,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:28:29,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:28:29,248 INFO L87 Difference]: Start difference. First operand 21504 states and 27106 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 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) [2021-11-02 22:28:40,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:40,591 INFO L93 Difference]: Finished difference Result 96720 states and 120492 transitions. [2021-11-02 22:28:40,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:28:40,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 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 [2021-11-02 22:28:40,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:40,736 INFO L225 Difference]: With dead ends: 96720 [2021-11-02 22:28:40,736 INFO L226 Difference]: Without dead ends: 75243 [2021-11-02 22:28:40,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.20ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:28:40,782 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6925 mSDsluCounter, 6210 mSDsCounter, 0 mSdLazyCounter, 11409 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8287.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6925 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.19ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 11409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9797.39ms IncrementalHoareTripleChecker+Time [2021-11-02 22:28:40,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6925 Valid, 0 Invalid, 11422 Unknown, 0 Unchecked, 22.19ms Time], IncrementalHoareTripleChecker [13 Valid, 11409 Invalid, 0 Unknown, 0 Unchecked, 9797.39ms Time] [2021-11-02 22:28:40,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75243 states. [2021-11-02 22:28:41,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75243 to 41437. [2021-11-02 22:28:41,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41437 states, 41417 states have (on average 1.256537170726996) internal successors, (52042), 41436 states have internal predecessors, (52042), 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) [2021-11-02 22:28:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41437 states to 41437 states and 52042 transitions. [2021-11-02 22:28:42,051 INFO L78 Accepts]: Start accepts. Automaton has 41437 states and 52042 transitions. Word has length 54 [2021-11-02 22:28:42,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:42,051 INFO L470 AbstractCegarLoop]: Abstraction has 41437 states and 52042 transitions. [2021-11-02 22:28:42,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 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) [2021-11-02 22:28:42,052 INFO L276 IsEmpty]: Start isEmpty. Operand 41437 states and 52042 transitions. [2021-11-02 22:28:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 22:28:42,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 22:28:42,247 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:28:42,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:28:42,248 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 22:28:42,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:42,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2097868957, now seen corresponding path program 1 times [2021-11-02 22:28:42,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:42,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327683127] [2021-11-02 22:28:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:42,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 22:28:42,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:42,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327683127] [2021-11-02 22:28:42,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327683127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:28:42,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:28:42,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:28:42,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231773174] [2021-11-02 22:28:42,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:28:42,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:42,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:28:42,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:28:42,366 INFO L87 Difference]: Start difference. First operand 41437 states and 52042 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 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) [2021-11-02 22:28:52,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 22:29:02,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:02,642 INFO L93 Difference]: Finished difference Result 155045 states and 193226 transitions. [2021-11-02 22:29:02,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:29:02,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 59 [2021-11-02 22:29:02,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:02,877 INFO L225 Difference]: With dead ends: 155045 [2021-11-02 22:29:02,878 INFO L226 Difference]: Without dead ends: 113635 [2021-11-02 22:29:02,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.04ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:29:02,955 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10950 mSDsluCounter, 12945 mSDsCounter, 0 mSdLazyCounter, 19014 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14931.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10950 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.88ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 19014 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17371.14ms IncrementalHoareTripleChecker+Time [2021-11-02 22:29:02,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10950 Valid, 0 Invalid, 19049 Unknown, 0 Unchecked, 39.88ms Time], IncrementalHoareTripleChecker [34 Valid, 19014 Invalid, 1 Unknown, 0 Unchecked, 17371.14ms Time] [2021-11-02 22:29:03,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113635 states. [2021-11-02 22:29:04,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113635 to 41529. [2021-11-02 22:29:04,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41529 states, 41509 states have (on average 1.2559685851261173) internal successors, (52134), 41528 states have internal predecessors, (52134), 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) [2021-11-02 22:29:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41529 states to 41529 states and 52134 transitions. [2021-11-02 22:29:04,929 INFO L78 Accepts]: Start accepts. Automaton has 41529 states and 52134 transitions. Word has length 59 [2021-11-02 22:29:04,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:04,930 INFO L470 AbstractCegarLoop]: Abstraction has 41529 states and 52134 transitions. [2021-11-02 22:29:04,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-02 22:29:04,930 INFO L276 IsEmpty]: Start isEmpty. Operand 41529 states and 52134 transitions. [2021-11-02 22:29:04,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-02 22:29:04,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 22:29:04,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:04,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:29:04,932 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 22:29:04,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:04,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1710673498, now seen corresponding path program 1 times [2021-11-02 22:29:04,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:04,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640996425] [2021-11-02 22:29:04,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:04,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:05,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:29:05,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:05,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640996425] [2021-11-02 22:29:05,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640996425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:05,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:05,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:29:05,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036290795] [2021-11-02 22:29:05,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:29:05,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:05,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:29:05,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:29:05,080 INFO L87 Difference]: Start difference. First operand 41529 states and 52134 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 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) [2021-11-02 22:29:07,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 22:29:14,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 22:29:18,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 22:29:21,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 22:29:29,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:29,687 INFO L93 Difference]: Finished difference Result 167403 states and 213895 transitions. [2021-11-02 22:29:29,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:29:29,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 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 123 [2021-11-02 22:29:29,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:29,938 INFO L225 Difference]: With dead ends: 167403 [2021-11-02 22:29:29,938 INFO L226 Difference]: Without dead ends: 125901 [2021-11-02 22:29:30,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 7.13ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:29:30,009 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10481 mSDsluCounter, 11461 mSDsCounter, 0 mSdLazyCounter, 14612 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18547.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10481 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.47ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14612 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20835.64ms IncrementalHoareTripleChecker+Time [2021-11-02 22:29:30,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10481 Valid, 0 Invalid, 14622 Unknown, 0 Unchecked, 32.47ms Time], IncrementalHoareTripleChecker [7 Valid, 14612 Invalid, 3 Unknown, 0 Unchecked, 20835.64ms Time] [2021-11-02 22:29:30,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125901 states. [2021-11-02 22:29:33,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125901 to 97709. [2021-11-02 22:29:33,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97709 states, 97689 states have (on average 1.280717378619906) internal successors, (125112), 97708 states have internal predecessors, (125112), 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) [2021-11-02 22:29:33,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97709 states to 97709 states and 125112 transitions. [2021-11-02 22:29:33,553 INFO L78 Accepts]: Start accepts. Automaton has 97709 states and 125112 transitions. Word has length 123 [2021-11-02 22:29:33,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:33,554 INFO L470 AbstractCegarLoop]: Abstraction has 97709 states and 125112 transitions. [2021-11-02 22:29:33,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 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) [2021-11-02 22:29:33,554 INFO L276 IsEmpty]: Start isEmpty. Operand 97709 states and 125112 transitions. [2021-11-02 22:29:33,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-02 22:29:33,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 22:29:33,556 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:33,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:29:33,556 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 22:29:33,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:33,556 INFO L85 PathProgramCache]: Analyzing trace with hash 314855015, now seen corresponding path program 1 times [2021-11-02 22:29:33,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:33,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267386954] [2021-11-02 22:29:33,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:33,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:29:33,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:33,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267386954] [2021-11-02 22:29:33,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267386954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:33,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:33,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:29:33,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316469208] [2021-11-02 22:29:33,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:29:33,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:33,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:29:33,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:29:33,647 INFO L87 Difference]: Start difference. First operand 97709 states and 125112 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2021-11-02 22:29:40,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 22:29:50,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:50,269 INFO L93 Difference]: Finished difference Result 282225 states and 361742 transitions. [2021-11-02 22:29:50,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:29:50,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 149 [2021-11-02 22:29:50,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:50,629 INFO L225 Difference]: With dead ends: 282225 [2021-11-02 22:29:50,630 INFO L226 Difference]: Without dead ends: 184543 [2021-11-02 22:29:50,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:29:50,903 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2881 mSDsluCounter, 3099 mSDsCounter, 0 mSdLazyCounter, 9057 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8770.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2881 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.52ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9057 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10036.01ms IncrementalHoareTripleChecker+Time [2021-11-02 22:29:50,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2881 Valid, 0 Invalid, 9060 Unknown, 0 Unchecked, 10.52ms Time], IncrementalHoareTripleChecker [2 Valid, 9057 Invalid, 1 Unknown, 0 Unchecked, 10036.01ms Time] [2021-11-02 22:29:51,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184543 states. [2021-11-02 22:29:57,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184543 to 184407. [2021-11-02 22:29:57,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184407 states, 184387 states have (on average 1.282340945945213) internal successors, (236447), 184406 states have internal predecessors, (236447), 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) [2021-11-02 22:29:58,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184407 states to 184407 states and 236447 transitions. [2021-11-02 22:29:58,040 INFO L78 Accepts]: Start accepts. Automaton has 184407 states and 236447 transitions. Word has length 149 [2021-11-02 22:29:58,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:58,040 INFO L470 AbstractCegarLoop]: Abstraction has 184407 states and 236447 transitions. [2021-11-02 22:29:58,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2021-11-02 22:29:58,040 INFO L276 IsEmpty]: Start isEmpty. Operand 184407 states and 236447 transitions. [2021-11-02 22:29:58,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-02 22:29:58,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 22:29:58,043 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:58,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 22:29:58,043 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 22:29:58,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:58,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1654555726, now seen corresponding path program 1 times [2021-11-02 22:29:58,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:58,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605410334] [2021-11-02 22:29:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:58,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:29:58,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:58,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605410334] [2021-11-02 22:29:58,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605410334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:58,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:58,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:29:58,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005005406] [2021-11-02 22:29:58,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:29:58,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:58,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:29:58,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:58,218 INFO L87 Difference]: Start difference. First operand 184407 states and 236447 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2021-11-02 22:30:05,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []