./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.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 3b154baf348652a9aadd484f41053a90df6581eb3d7346fd488d4cc05040e74b --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 02:46:53,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 02:46:53,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 02:46:53,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 02:46:53,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 02:46:53,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 02:46:53,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 02:46:53,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 02:46:53,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 02:46:53,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 02:46:53,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 02:46:53,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 02:46:53,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 02:46:53,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 02:46:53,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 02:46:53,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 02:46:53,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 02:46:53,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 02:46:53,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 02:46:53,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 02:46:53,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 02:46:53,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 02:46:53,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 02:46:53,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 02:46:53,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 02:46:53,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 02:46:53,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 02:46:53,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 02:46:53,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 02:46:53,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 02:46:53,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 02:46:53,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 02:46:53,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 02:46:53,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 02:46:53,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 02:46:53,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 02:46:53,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 02:46:53,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 02:46:53,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 02:46:53,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 02:46:53,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 02:46:53,230 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 02:46:53,246 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 02:46:53,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 02:46:53,246 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 02:46:53,247 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 02:46:53,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 02:46:53,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 02:46:53,248 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 02:46:53,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 02:46:53,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 02:46:53,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 02:46:53,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 02:46:53,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 02:46:53,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 02:46:53,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 02:46:53,249 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 02:46:53,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 02:46:53,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 02:46:53,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 02:46:53,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 02:46:53,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 02:46:53,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 02:46:53,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 02:46:53,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 02:46:53,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 02:46:53,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 02:46:53,250 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 02:46:53,251 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 02:46:53,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 02:46:53,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 02:46:53,251 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b154baf348652a9aadd484f41053a90df6581eb3d7346fd488d4cc05040e74b [2021-11-04 02:46:53,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 02:46:53,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 02:46:53,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 02:46:53,462 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 02:46:53,464 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 02:46:53,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2021-11-04 02:46:53,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b0b3063/293f7f34b13a448e81e5f9dfd0cec96e/FLAG60514db2f [2021-11-04 02:46:54,043 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 02:46:54,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2021-11-04 02:46:54,071 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b0b3063/293f7f34b13a448e81e5f9dfd0cec96e/FLAG60514db2f [2021-11-04 02:46:54,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b0b3063/293f7f34b13a448e81e5f9dfd0cec96e [2021-11-04 02:46:54,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 02:46:54,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 02:46:54,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 02:46:54,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 02:46:54,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 02:46:54,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 02:46:54" (1/1) ... [2021-11-04 02:46:54,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@493ecf4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:54, skipping insertion in model container [2021-11-04 02:46:54,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 02:46:54" (1/1) ... [2021-11-04 02:46:54,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 02:46:54,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 02:46:55,251 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i[119285,119298] [2021-11-04 02:46:55,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 02:46:55,310 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 02:46:55,472 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i[119285,119298] [2021-11-04 02:46:55,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 02:46:55,527 INFO L208 MainTranslator]: Completed translation [2021-11-04 02:46:55,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:55 WrapperNode [2021-11-04 02:46:55,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 02:46:55,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 02:46:55,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 02:46:55,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 02:46:55,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:55" (1/1) ... [2021-11-04 02:46:55,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:55" (1/1) ... [2021-11-04 02:46:56,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 02:46:56,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 02:46:56,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 02:46:56,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 02:46:56,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:55" (1/1) ... [2021-11-04 02:46:56,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:55" (1/1) ... [2021-11-04 02:46:56,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:55" (1/1) ... [2021-11-04 02:46:56,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:55" (1/1) ... [2021-11-04 02:46:57,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:55" (1/1) ... [2021-11-04 02:46:57,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:55" (1/1) ... [2021-11-04 02:46:57,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:55" (1/1) ... [2021-11-04 02:46:57,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 02:46:57,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 02:46:57,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 02:46:57,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 02:46:57,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:55" (1/1) ... [2021-11-04 02:46:57,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 02:46:57,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:46:57,697 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) [2021-11-04 02:46:57,706 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 [2021-11-04 02:46:57,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 02:46:57,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 02:46:57,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 02:46:57,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 02:46:57,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 02:46:57,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 02:46:57,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 02:46:57,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 02:46:57,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 02:46:57,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 02:46:57,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 02:47:03,689 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 02:47:03,689 INFO L299 CfgBuilder]: Removed 10130 assume(true) statements. [2021-11-04 02:47:03,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 02:47:03 BoogieIcfgContainer [2021-11-04 02:47:03,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 02:47:03,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 02:47:03,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 02:47:03,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 02:47:03,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 02:46:54" (1/3) ... [2021-11-04 02:47:03,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6256f71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 02:47:03, skipping insertion in model container [2021-11-04 02:47:03,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:55" (2/3) ... [2021-11-04 02:47:03,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6256f71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 02:47:03, skipping insertion in model container [2021-11-04 02:47:03,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 02:47:03" (3/3) ... [2021-11-04 02:47:03,703 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2021-11-04 02:47:03,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 02:47:03,707 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-04 02:47:03,762 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 02:47:03,767 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 [2021-11-04 02:47:03,767 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-04 02:47:03,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 8118 states, 8105 states have (on average 1.3009253547193091) internal successors, (10544), 8117 states have internal predecessors, (10544), 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) [2021-11-04 02:47:03,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-04 02:47:03,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:47:03,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 02:47:03,860 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:47:03,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:47:03,864 INFO L85 PathProgramCache]: Analyzing trace with hash 296755471, now seen corresponding path program 1 times [2021-11-04 02:47:03,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:47:03,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122310006] [2021-11-04 02:47:03,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:47:03,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:47:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:47:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 02:47:04,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:47:04,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122310006] [2021-11-04 02:47:04,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122310006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:47:04,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 02:47:04,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 02:47:04,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630929641] [2021-11-04 02:47:04,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:47:04,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:47:04,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:47:04,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:47:04,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:47:04,169 INFO L87 Difference]: Start difference. First operand has 8118 states, 8105 states have (on average 1.3009253547193091) internal successors, (10544), 8117 states have internal predecessors, (10544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-04 02:47:06,733 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:47:08,813 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:47:12,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:47:14,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:47:16,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:47:29,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:47:51,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:47:51,450 INFO L93 Difference]: Finished difference Result 16224 states and 21069 transitions. [2021-11-04 02:47:51,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:47:51,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-11-04 02:47:51,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:47:51,497 INFO L225 Difference]: With dead ends: 16224 [2021-11-04 02:47:51,497 INFO L226 Difference]: Without dead ends: 8101 [2021-11-04 02:47:51,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:47:51,524 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 245 mSDsluCounter, 10160 mSDsCounter, 0 mSdLazyCounter, 20374 mSolverCounterSat, 5 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44003.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.31ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20374 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46675.91ms IncrementalHoareTripleChecker+Time [2021-11-04 02:47:51,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 0 Invalid, 20385 Unknown, 0 Unchecked, 43.31ms Time], IncrementalHoareTripleChecker [5 Valid, 20374 Invalid, 6 Unknown, 0 Unchecked, 46675.91ms Time] [2021-11-04 02:47:51,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8101 states. [2021-11-04 02:47:51,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8101 to 8079. [2021-11-04 02:47:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8079 states, 8067 states have (on average 1.2906904673360604) internal successors, (10412), 8078 states have internal predecessors, (10412), 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) [2021-11-04 02:47:51,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8079 states to 8079 states and 10412 transitions. [2021-11-04 02:47:51,733 INFO L78 Accepts]: Start accepts. Automaton has 8079 states and 10412 transitions. Word has length 12 [2021-11-04 02:47:51,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:47:51,734 INFO L470 AbstractCegarLoop]: Abstraction has 8079 states and 10412 transitions. [2021-11-04 02:47:51,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-04 02:47:51,736 INFO L276 IsEmpty]: Start isEmpty. Operand 8079 states and 10412 transitions. [2021-11-04 02:47:51,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-04 02:47:51,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:47:51,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 02:47:51,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 02:47:51,738 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:47:51,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:47:51,740 INFO L85 PathProgramCache]: Analyzing trace with hash -299393486, now seen corresponding path program 1 times [2021-11-04 02:47:51,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:47:51,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149746031] [2021-11-04 02:47:51,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:47:51,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:47:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:47:51,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 02:47:51,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:47:51,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149746031] [2021-11-04 02:47:51,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149746031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:47:51,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 02:47:51,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 02:47:51,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72717387] [2021-11-04 02:47:51,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:47:51,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:47:51,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:47:51,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:47:51,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:47:51,840 INFO L87 Difference]: Start difference. First operand 8079 states and 10412 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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) [2021-11-04 02:47:54,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:47:56,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:47:59,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:48:02,070 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:48:04,215 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:48:20,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:48:47,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:48:47,138 INFO L93 Difference]: Finished difference Result 19616 states and 25273 transitions. [2021-11-04 02:48:47,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:48:47,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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 17 [2021-11-04 02:48:47,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:48:47,179 INFO L225 Difference]: With dead ends: 19616 [2021-11-04 02:48:47,179 INFO L226 Difference]: Without dead ends: 11540 [2021-11-04 02:48:47,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:48:47,197 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4409 mSDsluCounter, 10185 mSDsCounter, 0 mSdLazyCounter, 20376 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51398.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4409 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.18ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20376 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54605.36ms IncrementalHoareTripleChecker+Time [2021-11-04 02:48:47,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4409 Valid, 0 Invalid, 20383 Unknown, 0 Unchecked, 49.18ms Time], IncrementalHoareTripleChecker [1 Valid, 20376 Invalid, 6 Unknown, 0 Unchecked, 54605.36ms Time] [2021-11-04 02:48:47,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11540 states. [2021-11-04 02:48:47,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11540 to 11499. [2021-11-04 02:48:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11499 states, 11487 states have (on average 1.290589361887351) internal successors, (14825), 11498 states have internal predecessors, (14825), 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) [2021-11-04 02:48:47,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11499 states to 11499 states and 14825 transitions. [2021-11-04 02:48:47,711 INFO L78 Accepts]: Start accepts. Automaton has 11499 states and 14825 transitions. Word has length 17 [2021-11-04 02:48:47,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:48:47,712 INFO L470 AbstractCegarLoop]: Abstraction has 11499 states and 14825 transitions. [2021-11-04 02:48:47,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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) [2021-11-04 02:48:47,713 INFO L276 IsEmpty]: Start isEmpty. Operand 11499 states and 14825 transitions. [2021-11-04 02:48:47,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-04 02:48:47,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:48:47,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 02:48:47,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 02:48:47,719 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:48:47,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:48:47,719 INFO L85 PathProgramCache]: Analyzing trace with hash -568284282, now seen corresponding path program 1 times [2021-11-04 02:48:47,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:48:47,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696407277] [2021-11-04 02:48:47,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:48:47,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:48:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:48:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 02:48:47,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:48:47,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696407277] [2021-11-04 02:48:47,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696407277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:48:47,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 02:48:47,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 02:48:47,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127477383] [2021-11-04 02:48:47,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:48:47,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:48:47,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:48:47,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:48:47,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:48:47,838 INFO L87 Difference]: Start difference. First operand 11499 states and 14825 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-04 02:48:50,494 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:48:52,599 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:48:57,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:49:00,214 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:49:02,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:49:16,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:49:23,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:49:29,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:49:49,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:49:49,368 INFO L93 Difference]: Finished difference Result 29499 states and 38032 transitions. [2021-11-04 02:49:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:49:49,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2021-11-04 02:49:49,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:49:49,418 INFO L225 Difference]: With dead ends: 29499 [2021-11-04 02:49:49,418 INFO L226 Difference]: Without dead ends: 18003 [2021-11-04 02:49:49,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:49:49,440 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4377 mSDsluCounter, 10177 mSDsCounter, 0 mSdLazyCounter, 24522 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57020.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4377 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.36ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24522 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60737.94ms IncrementalHoareTripleChecker+Time [2021-11-04 02:49:49,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4377 Valid, 0 Invalid, 24531 Unknown, 0 Unchecked, 45.36ms Time], IncrementalHoareTripleChecker [3 Valid, 24522 Invalid, 6 Unknown, 0 Unchecked, 60737.94ms Time] [2021-11-04 02:49:49,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18003 states. [2021-11-04 02:49:49,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18003 to 17989. [2021-11-04 02:49:49,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17989 states, 17977 states have (on average 1.2900372698448017) internal successors, (23191), 17988 states have internal predecessors, (23191), 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) [2021-11-04 02:49:49,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17989 states to 17989 states and 23191 transitions. [2021-11-04 02:49:49,791 INFO L78 Accepts]: Start accepts. Automaton has 17989 states and 23191 transitions. Word has length 18 [2021-11-04 02:49:49,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:49:49,791 INFO L470 AbstractCegarLoop]: Abstraction has 17989 states and 23191 transitions. [2021-11-04 02:49:49,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-04 02:49:49,792 INFO L276 IsEmpty]: Start isEmpty. Operand 17989 states and 23191 transitions. [2021-11-04 02:49:49,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-04 02:49:49,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:49:49,795 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] [2021-11-04 02:49:49,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 02:49:49,796 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:49:49,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:49:49,796 INFO L85 PathProgramCache]: Analyzing trace with hash 340776562, now seen corresponding path program 1 times [2021-11-04 02:49:49,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:49:49,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268634686] [2021-11-04 02:49:49,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:49:49,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:49:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:49:49,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 02:49:49,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:49:49,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268634686] [2021-11-04 02:49:49,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268634686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:49:49,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 02:49:49,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 02:49:49,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751967197] [2021-11-04 02:49:49,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:49:49,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:49:49,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:49:49,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:49:49,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:49:49,868 INFO L87 Difference]: Start difference. First operand 17989 states and 23191 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-04 02:49:52,906 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:49:55,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:49:57,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:50:01,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:50:04,075 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:50:15,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:50:19,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:50:24,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:50:29,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:50:49,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:50:49,300 INFO L93 Difference]: Finished difference Result 36121 states and 46565 transitions. [2021-11-04 02:50:49,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:50:49,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2021-11-04 02:50:49,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:50:49,341 INFO L225 Difference]: With dead ends: 36121 [2021-11-04 02:50:49,342 INFO L226 Difference]: Without dead ends: 18135 [2021-11-04 02:50:49,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:50:49,371 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 89 mSDsluCounter, 10184 mSDsCounter, 0 mSdLazyCounter, 20379 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55520.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20379 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58782.81ms IncrementalHoareTripleChecker+Time [2021-11-04 02:50:49,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 0 Invalid, 20386 Unknown, 0 Unchecked, 38.30ms Time], IncrementalHoareTripleChecker [0 Valid, 20379 Invalid, 7 Unknown, 0 Unchecked, 58782.81ms Time] [2021-11-04 02:50:49,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18135 states. [2021-11-04 02:50:49,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18135 to 17991. [2021-11-04 02:50:49,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17991 states, 17979 states have (on average 1.2900050058401469) internal successors, (23193), 17990 states have internal predecessors, (23193), 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) [2021-11-04 02:50:49,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17991 states to 17991 states and 23193 transitions. [2021-11-04 02:50:49,725 INFO L78 Accepts]: Start accepts. Automaton has 17991 states and 23193 transitions. Word has length 22 [2021-11-04 02:50:49,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:50:49,726 INFO L470 AbstractCegarLoop]: Abstraction has 17991 states and 23193 transitions. [2021-11-04 02:50:49,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-04 02:50:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 17991 states and 23193 transitions. [2021-11-04 02:50:49,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-04 02:50:49,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:50:49,728 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] [2021-11-04 02:50:49,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 02:50:49,729 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:50:49,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:50:49,729 INFO L85 PathProgramCache]: Analyzing trace with hash 680206091, now seen corresponding path program 1 times [2021-11-04 02:50:49,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:50:49,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403493078] [2021-11-04 02:50:49,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:50:49,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:50:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:50:49,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 02:50:49,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:50:49,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403493078] [2021-11-04 02:50:49,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403493078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:50:49,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 02:50:49,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 02:50:49,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067982682] [2021-11-04 02:50:49,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:50:49,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:50:49,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:50:49,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:50:49,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:50:49,820 INFO L87 Difference]: Start difference. First operand 17991 states and 23193 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-11-04 02:50:52,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:50:54,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:50:56,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:50:58,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:51:03,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:51:12,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:51:23,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:51:45,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:51:45,428 INFO L93 Difference]: Finished difference Result 49084 states and 63279 transitions. [2021-11-04 02:51:45,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:51:45,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2021-11-04 02:51:45,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:51:45,511 INFO L225 Difference]: With dead ends: 49084 [2021-11-04 02:51:45,511 INFO L226 Difference]: Without dead ends: 31096 [2021-11-04 02:51:45,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.04ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:51:45,549 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4324 mSDsluCounter, 10107 mSDsCounter, 0 mSdLazyCounter, 20321 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50987.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4324 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.85ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20321 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54738.91ms IncrementalHoareTripleChecker+Time [2021-11-04 02:51:45,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4324 Valid, 0 Invalid, 20327 Unknown, 0 Unchecked, 36.85ms Time], IncrementalHoareTripleChecker [1 Valid, 20321 Invalid, 5 Unknown, 0 Unchecked, 54738.91ms Time] [2021-11-04 02:51:45,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31096 states. [2021-11-04 02:51:46,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31096 to 18003. [2021-11-04 02:51:46,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18003 states, 17991 states have (on average 1.2900339058418098) internal successors, (23209), 18002 states have internal predecessors, (23209), 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) [2021-11-04 02:51:46,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18003 states to 18003 states and 23209 transitions. [2021-11-04 02:51:46,154 INFO L78 Accepts]: Start accepts. Automaton has 18003 states and 23209 transitions. Word has length 27 [2021-11-04 02:51:46,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:51:46,154 INFO L470 AbstractCegarLoop]: Abstraction has 18003 states and 23209 transitions. [2021-11-04 02:51:46,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-11-04 02:51:46,154 INFO L276 IsEmpty]: Start isEmpty. Operand 18003 states and 23209 transitions. [2021-11-04 02:51:46,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-04 02:51:46,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:51:46,156 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] [2021-11-04 02:51:46,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 02:51:46,156 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:51:46,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:51:46,157 INFO L85 PathProgramCache]: Analyzing trace with hash 503225488, now seen corresponding path program 1 times [2021-11-04 02:51:46,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:51:46,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113623611] [2021-11-04 02:51:46,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:51:46,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:51:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:51:46,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 02:51:46,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:51:46,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113623611] [2021-11-04 02:51:46,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113623611] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 02:51:46,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140996787] [2021-11-04 02:51:46,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:51:46,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:51:46,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:51:46,276 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 02:51:46,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 02:51:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:51:46,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 02:51:46,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 02:51:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 02:51:46,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 02:51:46,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140996787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:51:46,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 02:51:46,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 02:51:46,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294362160] [2021-11-04 02:51:46,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:51:46,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:51:46,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:51:46,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:51:46,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:51:46,810 INFO L87 Difference]: Start difference. First operand 18003 states and 23209 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-11-04 02:51:49,627 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:51:51,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:51:53,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:51:55,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:52:00,843 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:52:15,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:52:21,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:52:45,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:52:45,372 INFO L93 Difference]: Finished difference Result 49376 states and 63649 transitions. [2021-11-04 02:52:45,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:52:45,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2021-11-04 02:52:45,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:52:45,430 INFO L225 Difference]: With dead ends: 49376 [2021-11-04 02:52:45,431 INFO L226 Difference]: Without dead ends: 31376 [2021-11-04 02:52:45,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.29ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:52:45,463 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4404 mSDsluCounter, 10186 mSDsCounter, 0 mSdLazyCounter, 20401 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53373.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4404 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.31ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20401 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57497.89ms IncrementalHoareTripleChecker+Time [2021-11-04 02:52:45,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4404 Valid, 0 Invalid, 20407 Unknown, 0 Unchecked, 38.31ms Time], IncrementalHoareTripleChecker [1 Valid, 20401 Invalid, 5 Unknown, 0 Unchecked, 57497.89ms Time] [2021-11-04 02:52:45,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31376 states. [2021-11-04 02:52:45,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31376 to 18289. [2021-11-04 02:52:45,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18289 states, 18277 states have (on average 1.2897630902226842) internal successors, (23573), 18288 states have internal predecessors, (23573), 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) [2021-11-04 02:52:45,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18289 states to 18289 states and 23573 transitions. [2021-11-04 02:52:45,952 INFO L78 Accepts]: Start accepts. Automaton has 18289 states and 23573 transitions. Word has length 29 [2021-11-04 02:52:45,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:52:45,952 INFO L470 AbstractCegarLoop]: Abstraction has 18289 states and 23573 transitions. [2021-11-04 02:52:45,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-11-04 02:52:45,953 INFO L276 IsEmpty]: Start isEmpty. Operand 18289 states and 23573 transitions. [2021-11-04 02:52:45,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-04 02:52:45,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:52:45,954 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] [2021-11-04 02:52:45,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-04 02:52:46,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-04 02:52:46,160 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:52:46,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:52:46,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1183283858, now seen corresponding path program 1 times [2021-11-04 02:52:46,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:52:46,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931447686] [2021-11-04 02:52:46,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:52:46,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:52:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:52:46,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 02:52:46,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:52:46,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931447686] [2021-11-04 02:52:46,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931447686] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 02:52:46,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612575656] [2021-11-04 02:52:46,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:52:46,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:52:46,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:52:46,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 02:52:46,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 02:52:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:52:46,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 02:52:46,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 02:52:46,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 02:52:46,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 02:52:46,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612575656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:52:46,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 02:52:46,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 02:52:46,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857563138] [2021-11-04 02:52:46,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:52:46,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:52:46,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:52:46,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:52:46,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:52:46,742 INFO L87 Difference]: Start difference. First operand 18289 states and 23573 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-11-04 02:52:49,251 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:52:51,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:52:53,396 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:52:55,459 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:52:59,042 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:53:06,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:53:09,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:53:44,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:53:44,627 INFO L93 Difference]: Finished difference Result 22209 states and 28604 transitions. [2021-11-04 02:53:44,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:53:44,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2021-11-04 02:53:44,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:53:44,661 INFO L225 Difference]: With dead ends: 22209 [2021-11-04 02:53:44,661 INFO L226 Difference]: Without dead ends: 22197 [2021-11-04 02:53:44,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.40ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:53:44,670 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4415 mSDsluCounter, 10182 mSDsCounter, 0 mSdLazyCounter, 20386 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53065.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.41ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20386 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57163.06ms IncrementalHoareTripleChecker+Time [2021-11-04 02:53:44,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4415 Valid, 0 Invalid, 20394 Unknown, 0 Unchecked, 36.41ms Time], IncrementalHoareTripleChecker [2 Valid, 20386 Invalid, 6 Unknown, 0 Unchecked, 57163.06ms Time] [2021-11-04 02:53:44,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22197 states. [2021-11-04 02:53:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22197 to 18291. [2021-11-04 02:53:45,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18291 states, 18279 states have (on average 1.2896219705673178) internal successors, (23573), 18290 states have internal predecessors, (23573), 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) [2021-11-04 02:53:45,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18291 states to 18291 states and 23573 transitions. [2021-11-04 02:53:45,118 INFO L78 Accepts]: Start accepts. Automaton has 18291 states and 23573 transitions. Word has length 29 [2021-11-04 02:53:45,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:53:45,118 INFO L470 AbstractCegarLoop]: Abstraction has 18291 states and 23573 transitions. [2021-11-04 02:53:45,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-11-04 02:53:45,119 INFO L276 IsEmpty]: Start isEmpty. Operand 18291 states and 23573 transitions. [2021-11-04 02:53:45,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-04 02:53:45,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:53:45,119 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] [2021-11-04 02:53:45,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 02:53:45,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-04 02:53:45,339 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:53:45,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:53:45,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1183343440, now seen corresponding path program 1 times [2021-11-04 02:53:45,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:53:45,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79186426] [2021-11-04 02:53:45,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:53:45,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:53:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:53:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 02:53:45,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:53:45,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79186426] [2021-11-04 02:53:45,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79186426] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 02:53:45,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785332045] [2021-11-04 02:53:45,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:53:45,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:53:45,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:53:45,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 02:53:45,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 02:53:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:53:45,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 02:53:45,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 02:53:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 02:53:45,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 02:53:45,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785332045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:53:45,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 02:53:45,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 02:53:45,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023973801] [2021-11-04 02:53:45,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:53:45,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:53:45,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:53:45,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:53:45,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:53:45,905 INFO L87 Difference]: Start difference. First operand 18291 states and 23573 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-11-04 02:53:48,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:53:50,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:53:52,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:53:54,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:53:58,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:54:06,678 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:54:09,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:54:49,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:54:49,460 INFO L93 Difference]: Finished difference Result 25430 states and 32760 transitions. [2021-11-04 02:54:49,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:54:49,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2021-11-04 02:54:49,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:54:49,498 INFO L225 Difference]: With dead ends: 25430 [2021-11-04 02:54:49,498 INFO L226 Difference]: Without dead ends: 25428 [2021-11-04 02:54:49,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.67ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:54:49,506 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4390 mSDsluCounter, 10177 mSDsCounter, 0 mSdLazyCounter, 20369 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57887.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4390 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.09ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20369 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62622.44ms IncrementalHoareTripleChecker+Time [2021-11-04 02:54:49,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4390 Valid, 0 Invalid, 20376 Unknown, 0 Unchecked, 43.09ms Time], IncrementalHoareTripleChecker [1 Valid, 20369 Invalid, 6 Unknown, 0 Unchecked, 62622.44ms Time] [2021-11-04 02:54:49,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25428 states. [2021-11-04 02:54:49,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25428 to 25414. [2021-11-04 02:54:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25414 states, 25402 states have (on average 1.289307928509566) internal successors, (32751), 25413 states have internal predecessors, (32751), 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) [2021-11-04 02:54:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25414 states to 25414 states and 32751 transitions. [2021-11-04 02:54:50,061 INFO L78 Accepts]: Start accepts. Automaton has 25414 states and 32751 transitions. Word has length 29 [2021-11-04 02:54:50,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:54:50,062 INFO L470 AbstractCegarLoop]: Abstraction has 25414 states and 32751 transitions. [2021-11-04 02:54:50,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-11-04 02:54:50,062 INFO L276 IsEmpty]: Start isEmpty. Operand 25414 states and 32751 transitions. [2021-11-04 02:54:50,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-04 02:54:50,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:54:50,063 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] [2021-11-04 02:54:50,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-04 02:54:50,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:54:50,271 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:54:50,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:54:50,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1971035396, now seen corresponding path program 1 times [2021-11-04 02:54:50,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:54:50,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491842341] [2021-11-04 02:54:50,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:54:50,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:54:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:54:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 02:54:50,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:54:50,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491842341] [2021-11-04 02:54:50,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491842341] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 02:54:50,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670842677] [2021-11-04 02:54:50,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:54:50,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:54:50,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:54:50,352 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 02:54:50,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 02:54:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:54:50,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 02:54:50,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 02:54:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 02:54:50,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 02:54:50,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670842677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:54:50,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 02:54:50,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 02:54:50,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354527799] [2021-11-04 02:54:50,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:54:50,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:54:50,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:54:50,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:54:50,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:54:50,828 INFO L87 Difference]: Start difference. First operand 25414 states and 32751 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-11-04 02:54:53,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:54:55,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:54:57,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:54:59,745 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:55:03,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:55:11,635 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:55:14,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:55:16,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:55:24,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:55:59,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:55:59,395 INFO L93 Difference]: Finished difference Result 25431 states and 32761 transitions. [2021-11-04 02:55:59,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:55:59,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-11-04 02:55:59,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:55:59,447 INFO L225 Difference]: With dead ends: 25431 [2021-11-04 02:55:59,448 INFO L226 Difference]: Without dead ends: 25429 [2021-11-04 02:55:59,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.79ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:55:59,462 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4387 mSDsluCounter, 10178 mSDsCounter, 0 mSdLazyCounter, 20368 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62033.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4387 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.66ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20368 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67545.73ms IncrementalHoareTripleChecker+Time [2021-11-04 02:55:59,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4387 Valid, 0 Invalid, 20377 Unknown, 0 Unchecked, 51.66ms Time], IncrementalHoareTripleChecker [1 Valid, 20368 Invalid, 8 Unknown, 0 Unchecked, 67545.73ms Time] [2021-11-04 02:55:59,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25429 states. [2021-11-04 02:56:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25429 to 25415. [2021-11-04 02:56:00,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25415 states, 25403 states have (on average 1.2892965397787663) internal successors, (32752), 25414 states have internal predecessors, (32752), 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) [2021-11-04 02:56:00,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25415 states to 25415 states and 32752 transitions. [2021-11-04 02:56:00,183 INFO L78 Accepts]: Start accepts. Automaton has 25415 states and 32752 transitions. Word has length 30 [2021-11-04 02:56:00,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:56:00,183 INFO L470 AbstractCegarLoop]: Abstraction has 25415 states and 32752 transitions. [2021-11-04 02:56:00,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-11-04 02:56:00,183 INFO L276 IsEmpty]: Start isEmpty. Operand 25415 states and 32752 transitions. [2021-11-04 02:56:00,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-04 02:56:00,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:56:00,184 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] [2021-11-04 02:56:00,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-04 02:56:00,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:56:00,384 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:56:00,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:56:00,385 INFO L85 PathProgramCache]: Analyzing trace with hash -972531494, now seen corresponding path program 1 times [2021-11-04 02:56:00,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:56:00,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399189710] [2021-11-04 02:56:00,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:56:00,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:56:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:56:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 02:56:00,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:56:00,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399189710] [2021-11-04 02:56:00,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399189710] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 02:56:00,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313014662] [2021-11-04 02:56:00,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:56:00,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:56:00,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:56:00,460 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 02:56:00,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-04 02:56:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:56:00,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 02:56:00,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 02:56:00,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 02:56:00,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 02:56:00,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313014662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:56:00,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 02:56:00,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 02:56:00,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554295961] [2021-11-04 02:56:00,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:56:00,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:56:00,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:56:00,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:56:00,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:56:00,937 INFO L87 Difference]: Start difference. First operand 25415 states and 32752 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-11-04 02:56:03,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:56:06,072 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:56:08,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:56:10,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:56:14,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:56:25,850 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:56:28,760 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:56:39,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:57:13,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:57:13,268 INFO L93 Difference]: Finished difference Result 25432 states and 32762 transitions. [2021-11-04 02:57:13,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:57:13,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-11-04 02:57:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:57:13,321 INFO L225 Difference]: With dead ends: 25432 [2021-11-04 02:57:13,321 INFO L226 Difference]: Without dead ends: 25430 [2021-11-04 02:57:13,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.31ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:57:13,335 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4384 mSDsluCounter, 10184 mSDsCounter, 0 mSdLazyCounter, 20376 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65158.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4384 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20376 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71263.52ms IncrementalHoareTripleChecker+Time [2021-11-04 02:57:13,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4384 Valid, 0 Invalid, 20383 Unknown, 0 Unchecked, 51.88ms Time], IncrementalHoareTripleChecker [1 Valid, 20376 Invalid, 6 Unknown, 0 Unchecked, 71263.52ms Time] [2021-11-04 02:57:13,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25430 states. [2021-11-04 02:57:13,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25430 to 25416. [2021-11-04 02:57:14,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25416 states, 25404 states have (on average 1.2892851519445756) internal successors, (32753), 25415 states have internal predecessors, (32753), 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) [2021-11-04 02:57:14,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25416 states to 25416 states and 32753 transitions. [2021-11-04 02:57:14,052 INFO L78 Accepts]: Start accepts. Automaton has 25416 states and 32753 transitions. Word has length 31 [2021-11-04 02:57:14,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:57:14,053 INFO L470 AbstractCegarLoop]: Abstraction has 25416 states and 32753 transitions. [2021-11-04 02:57:14,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-11-04 02:57:14,053 INFO L276 IsEmpty]: Start isEmpty. Operand 25416 states and 32753 transitions. [2021-11-04 02:57:14,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-04 02:57:14,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:57:14,054 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] [2021-11-04 02:57:14,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-04 02:57:14,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-04 02:57:14,256 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:57:14,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:57:14,256 INFO L85 PathProgramCache]: Analyzing trace with hash -83681594, now seen corresponding path program 1 times [2021-11-04 02:57:14,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:57:14,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467744475] [2021-11-04 02:57:14,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:57:14,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:57:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:57:14,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 02:57:14,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:57:14,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467744475] [2021-11-04 02:57:14,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467744475] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 02:57:14,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164430088] [2021-11-04 02:57:14,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:57:14,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:57:14,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:57:14,352 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 02:57:14,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-04 02:57:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:57:14,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 02:57:14,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 02:57:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 02:57:14,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 02:57:14,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164430088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:57:14,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 02:57:14,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 02:57:14,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724960439] [2021-11-04 02:57:14,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:57:14,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:57:14,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:57:14,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:57:14,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:57:14,834 INFO L87 Difference]: Start difference. First operand 25416 states and 32753 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-11-04 02:57:17,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:57:19,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:57:21,763 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:57:23,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:57:27,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:57:34,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:57:38,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:57:40,466 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:57:50,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:58:20,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:58:20,685 INFO L93 Difference]: Finished difference Result 36652 states and 47266 transitions. [2021-11-04 02:58:20,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:58:20,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-11-04 02:58:20,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:58:20,748 INFO L225 Difference]: With dead ends: 36652 [2021-11-04 02:58:20,748 INFO L226 Difference]: Without dead ends: 36625 [2021-11-04 02:58:20,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.83ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:58:20,765 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3629 mSDsluCounter, 10149 mSDsCounter, 0 mSdLazyCounter, 20364 mSolverCounterSat, 11 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59275.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3629 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.36ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 20364 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64744.86ms IncrementalHoareTripleChecker+Time [2021-11-04 02:58:20,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3629 Valid, 0 Invalid, 20381 Unknown, 0 Unchecked, 42.36ms Time], IncrementalHoareTripleChecker [11 Valid, 20364 Invalid, 6 Unknown, 0 Unchecked, 64744.86ms Time] [2021-11-04 02:58:20,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36625 states. [2021-11-04 02:58:21,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36625 to 36619. [2021-11-04 02:58:21,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36619 states, 36607 states have (on average 1.2897260086868632) internal successors, (47213), 36618 states have internal predecessors, (47213), 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) [2021-11-04 02:58:21,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36619 states to 36619 states and 47213 transitions. [2021-11-04 02:58:21,679 INFO L78 Accepts]: Start accepts. Automaton has 36619 states and 47213 transitions. Word has length 32 [2021-11-04 02:58:21,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:58:21,679 INFO L470 AbstractCegarLoop]: Abstraction has 36619 states and 47213 transitions. [2021-11-04 02:58:21,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-11-04 02:58:21,680 INFO L276 IsEmpty]: Start isEmpty. Operand 36619 states and 47213 transitions. [2021-11-04 02:58:21,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-04 02:58:21,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:58:21,681 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] [2021-11-04 02:58:21,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-04 02:58:21,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:58:21,898 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:58:21,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:58:21,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1242889825, now seen corresponding path program 1 times [2021-11-04 02:58:21,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:58:21,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698794015] [2021-11-04 02:58:21,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:58:21,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:58:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:58:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 02:58:21,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:58:21,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698794015] [2021-11-04 02:58:21,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698794015] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 02:58:21,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924826435] [2021-11-04 02:58:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:58:21,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:58:21,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:58:21,959 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 02:58:21,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-04 02:58:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:58:22,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 02:58:22,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 02:58:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 02:58:22,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 02:58:22,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924826435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:58:22,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 02:58:22,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 02:58:22,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466174070] [2021-11-04 02:58:22,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:58:22,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:58:22,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:58:22,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:58:22,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:58:22,444 INFO L87 Difference]: Start difference. First operand 36619 states and 47213 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2021-11-04 02:58:25,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:58:27,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:58:29,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:58:31,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:58:37,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:58:51,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:59:01,185 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:59:21,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:59:21,303 INFO L93 Difference]: Finished difference Result 73271 states and 94475 transitions. [2021-11-04 02:59:21,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:59:21,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2021-11-04 02:59:21,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:59:21,363 INFO L225 Difference]: With dead ends: 73271 [2021-11-04 02:59:21,364 INFO L226 Difference]: Without dead ends: 36655 [2021-11-04 02:59:21,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.23ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:59:21,414 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 10179 mSDsCounter, 0 mSdLazyCounter, 20380 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53105.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.47ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20380 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57696.50ms IncrementalHoareTripleChecker+Time [2021-11-04 02:59:21,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 20387 Unknown, 0 Unchecked, 40.47ms Time], IncrementalHoareTripleChecker [2 Valid, 20380 Invalid, 5 Unknown, 0 Unchecked, 57696.50ms Time] [2021-11-04 02:59:21,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36655 states. [2021-11-04 02:59:22,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36655 to 36627. [2021-11-04 02:59:22,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36627 states, 36615 states have (on average 1.289662706541035) internal successors, (47221), 36626 states have internal predecessors, (47221), 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) [2021-11-04 02:59:22,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36627 states to 36627 states and 47221 transitions. [2021-11-04 02:59:22,209 INFO L78 Accepts]: Start accepts. Automaton has 36627 states and 47221 transitions. Word has length 47 [2021-11-04 02:59:22,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:59:22,209 INFO L470 AbstractCegarLoop]: Abstraction has 36627 states and 47221 transitions. [2021-11-04 02:59:22,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2021-11-04 02:59:22,209 INFO L276 IsEmpty]: Start isEmpty. Operand 36627 states and 47221 transitions. [2021-11-04 02:59:22,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-04 02:59:22,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:59:22,211 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] [2021-11-04 02:59:22,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-04 02:59:22,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:59:22,420 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:59:22,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:59:22,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1524248982, now seen corresponding path program 1 times [2021-11-04 02:59:22,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:59:22,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498570402] [2021-11-04 02:59:22,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:59:22,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:59:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:59:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 02:59:22,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:59:22,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498570402] [2021-11-04 02:59:22,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498570402] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 02:59:22,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171860813] [2021-11-04 02:59:22,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:59:22,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:59:22,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:59:22,486 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 02:59:22,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-04 02:59:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:59:22,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 02:59:22,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 02:59:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-04 02:59:22,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 02:59:22,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171860813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:59:22,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 02:59:22,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 02:59:22,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537370319] [2021-11-04 02:59:22,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:59:22,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:59:22,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:59:22,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:59:22,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:59:22,957 INFO L87 Difference]: Start difference. First operand 36627 states and 47221 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-11-04 02:59:25,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:59:27,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:59:29,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:59:31,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:59:36,786 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:59:43,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:59:46,051 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:59:49,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:59:55,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:00:11,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:00:11,820 INFO L93 Difference]: Finished difference Result 36632 states and 47226 transitions. [2021-11-04 03:00:11,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:00:11,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 [2021-11-04 03:00:11,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:00:11,870 INFO L225 Difference]: With dead ends: 36632 [2021-11-04 03:00:11,870 INFO L226 Difference]: Without dead ends: 36624 [2021-11-04 03:00:11,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.83ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:00:11,884 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 736 mSDsluCounter, 9427 mSDsCounter, 0 mSdLazyCounter, 19627 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44652.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.93ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19627 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47984.70ms IncrementalHoareTripleChecker+Time [2021-11-04 03:00:11,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [736 Valid, 0 Invalid, 19640 Unknown, 0 Unchecked, 23.93ms Time], IncrementalHoareTripleChecker [7 Valid, 19627 Invalid, 6 Unknown, 0 Unchecked, 47984.70ms Time] [2021-11-04 03:00:11,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36624 states. [2021-11-04 03:00:12,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36624 to 36624. [2021-11-04 03:00:12,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36624 states, 36615 states have (on average 1.289034548682234) internal successors, (47198), 36623 states have internal predecessors, (47198), 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) [2021-11-04 03:00:12,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36624 states to 36624 states and 47198 transitions. [2021-11-04 03:00:12,634 INFO L78 Accepts]: Start accepts. Automaton has 36624 states and 47198 transitions. Word has length 51 [2021-11-04 03:00:12,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:00:12,634 INFO L470 AbstractCegarLoop]: Abstraction has 36624 states and 47198 transitions. [2021-11-04 03:00:12,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-11-04 03:00:12,634 INFO L276 IsEmpty]: Start isEmpty. Operand 36624 states and 47198 transitions. [2021-11-04 03:00:12,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-04 03:00:12,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:00:12,639 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] [2021-11-04 03:00:12,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-04 03:00:12,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-04 03:00:12,842 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 03:00:12,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:00:12,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1779926187, now seen corresponding path program 1 times [2021-11-04 03:00:12,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:00:12,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261740595] [2021-11-04 03:00:12,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:00:12,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:00:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:00:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:00:12,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:00:12,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261740595] [2021-11-04 03:00:12,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261740595] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:00:12,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17058622] [2021-11-04 03:00:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:00:12,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:00:12,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:00:12,907 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:00:12,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-04 03:00:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:00:13,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 03:00:13,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:00:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 03:00:13,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 03:00:13,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17058622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:00:13,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 03:00:13,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 03:00:13,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640232108] [2021-11-04 03:00:13,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:00:13,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:00:13,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:00:13,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:00:13,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:00:13,453 INFO L87 Difference]: Start difference. First operand 36624 states and 47198 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-04 03:00:16,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:00:18,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:00:20,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:00:22,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:00:26,877 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15