./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 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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-4d01470 [2021-11-02 17:02:08,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 17:02:08,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 17:02:08,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 17:02:08,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 17:02:08,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 17:02:08,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 17:02:08,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 17:02:08,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 17:02:08,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 17:02:08,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 17:02:08,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 17:02:08,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 17:02:08,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 17:02:08,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 17:02:08,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 17:02:08,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 17:02:08,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 17:02:08,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 17:02:08,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 17:02:08,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 17:02:08,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 17:02:08,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 17:02:08,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 17:02:08,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 17:02:08,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 17:02:08,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 17:02:08,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 17:02:08,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 17:02:08,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 17:02:08,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 17:02:08,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 17:02:08,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 17:02:08,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 17:02:08,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 17:02:08,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 17:02:08,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 17:02:08,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 17:02:08,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 17:02:08,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 17:02:08,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 17:02:08,996 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 17:02:09,026 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 17:02:09,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 17:02:09,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 17:02:09,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 17:02:09,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 17:02:09,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 17:02:09,029 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 17:02:09,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 17:02:09,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 17:02:09,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 17:02:09,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 17:02:09,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 17:02:09,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 17:02:09,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 17:02:09,031 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 17:02:09,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 17:02:09,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 17:02:09,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 17:02:09,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 17:02:09,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 17:02:09,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 17:02:09,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 17:02:09,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 17:02:09,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 17:02:09,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 17:02:09,032 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 17:02:09,032 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 17:02:09,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 17:02:09,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 17:02:09,033 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b154baf348652a9aadd484f41053a90df6581eb3d7346fd488d4cc05040e74b [2021-11-02 17:02:09,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 17:02:09,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 17:02:09,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 17:02:09,279 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 17:02:09,280 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 17:02:09,281 INFO L432 ainManager$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 [2021-11-02 17:02:09,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba7f2b6f3/3a650ca38e1d44c28c5762aab127e510/FLAGd70b5c644 [2021-11-02 17:02:09,848 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 17:02:09,849 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 [2021-11-02 17:02:09,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba7f2b6f3/3a650ca38e1d44c28c5762aab127e510/FLAGd70b5c644 [2021-11-02 17:02:10,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba7f2b6f3/3a650ca38e1d44c28c5762aab127e510 [2021-11-02 17:02:10,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 17:02:10,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 17:02:10,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 17:02:10,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 17:02:10,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 17:02:10,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 05:02:10" (1/1) ... [2021-11-02 17:02:10,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7827998f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:02:10, skipping insertion in model container [2021-11-02 17:02:10,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 05:02:10" (1/1) ... [2021-11-02 17:02:10,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 17:02:10,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 17:02:10,864 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] [2021-11-02 17:02:10,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 17:02:10,952 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 17:02:11,112 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] [2021-11-02 17:02:11,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 17:02:11,151 INFO L208 MainTranslator]: Completed translation [2021-11-02 17:02:11,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:02:11 WrapperNode [2021-11-02 17:02:11,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 17:02:11,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 17:02:11,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 17:02:11,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 17:02:11,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:02:11" (1/1) ... [2021-11-02 17:02:11,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:02:11" (1/1) ... [2021-11-02 17:02:12,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 17:02:12,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 17:02:12,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 17:02:12,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 17:02:12,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:02:11" (1/1) ... [2021-11-02 17:02:12,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:02:11" (1/1) ... [2021-11-02 17:02:12,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:02:11" (1/1) ... [2021-11-02 17:02:12,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:02:11" (1/1) ... [2021-11-02 17:02:13,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:02:11" (1/1) ... [2021-11-02 17:02:13,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:02:11" (1/1) ... [2021-11-02 17:02:13,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:02:11" (1/1) ... [2021-11-02 17:02:13,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 17:02:13,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 17:02:13,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 17:02:13,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 17:02:13,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:02:11" (1/1) ... [2021-11-02 17:02:13,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 17:02:13,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:02:13,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 17:02:13,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 17:02:13,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 17:02:13,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 17:02:13,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 17:02:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 17:02:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 17:02:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 17:02:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 17:02:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 17:02:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 17:02:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 17:02:13,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 17:02:20,375 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 17:02:20,375 INFO L299 CfgBuilder]: Removed 10130 assume(true) statements. [2021-11-02 17:02:20,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 05:02:20 BoogieIcfgContainer [2021-11-02 17:02:20,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 17:02:20,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 17:02:20,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 17:02:20,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 17:02:20,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 05:02:10" (1/3) ... [2021-11-02 17:02:20,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360ee61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 05:02:20, skipping insertion in model container [2021-11-02 17:02:20,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:02:11" (2/3) ... [2021-11-02 17:02:20,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360ee61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 05:02:20, skipping insertion in model container [2021-11-02 17:02:20,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 05:02:20" (3/3) ... [2021-11-02 17:02:20,388 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2021-11-02 17:02:20,392 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 17:02:20,392 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-02 17:02:20,451 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 17:02:20,462 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 17:02:20,463 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-02 17:02:20,549 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) [2021-11-02 17:02:20,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 17:02:20,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:02:20,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:02:20,556 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)] === [2021-11-02 17:02:20,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:02:20,559 INFO L85 PathProgramCache]: Analyzing trace with hash 296755471, now seen corresponding path program 1 times [2021-11-02 17:02:20,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:02:20,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085626803] [2021-11-02 17:02:20,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:02:20,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:02:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:02:20,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:02:20,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:02:20,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085626803] [2021-11-02 17:02:20,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085626803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:02:20,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:02:20,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:02:20,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95240805] [2021-11-02 17:02:20,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:02:20,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:02:20,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:02:20,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:02:20,910 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) [2021-11-02 17:02:23,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:02:25,623 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:02:29,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:02:31,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:02:34,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:02:47,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:02:49,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:02:53,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:02:58,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:03:15,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:03:15,779 INFO L93 Difference]: Finished difference Result 16224 states and 21069 transitions. [2021-11-02 17:03:15,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:03:15,782 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 [2021-11-02 17:03:15,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:03:15,837 INFO L225 Difference]: With dead ends: 16224 [2021-11-02 17:03:15,840 INFO L226 Difference]: Without dead ends: 8101 [2021-11-02 17:03:15,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:03:15,866 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 245 mSDsluCounter, 10160 mSDsCounter, 0 mSdLazyCounter, 20375 mSolverCounterSat, 5 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51369.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.36ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20375 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54185.24ms IncrementalHoareTripleChecker+Time [2021-11-02 17:03:15,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 0 Invalid, 20385 Unknown, 0 Unchecked, 43.36ms Time], IncrementalHoareTripleChecker [5 Valid, 20375 Invalid, 5 Unknown, 0 Unchecked, 54185.24ms Time] [2021-11-02 17:03:15,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8101 states. [2021-11-02 17:03:16,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8101 to 8079. [2021-11-02 17:03:16,116 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) [2021-11-02 17:03:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8079 states to 8079 states and 10412 transitions. [2021-11-02 17:03:16,139 INFO L78 Accepts]: Start accepts. Automaton has 8079 states and 10412 transitions. Word has length 12 [2021-11-02 17:03:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:03:16,140 INFO L470 AbstractCegarLoop]: Abstraction has 8079 states and 10412 transitions. [2021-11-02 17:03:16,140 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) [2021-11-02 17:03:16,141 INFO L276 IsEmpty]: Start isEmpty. Operand 8079 states and 10412 transitions. [2021-11-02 17:03:16,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 17:03:16,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:03:16,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:03:16,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 17:03:16,143 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)] === [2021-11-02 17:03:16,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:03:16,145 INFO L85 PathProgramCache]: Analyzing trace with hash -299393486, now seen corresponding path program 1 times [2021-11-02 17:03:16,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:03:16,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77567802] [2021-11-02 17:03:16,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:03:16,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:03:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:03:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:03:16,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:03:16,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77567802] [2021-11-02 17:03:16,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77567802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:03:16,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:03:16,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 17:03:16,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374089617] [2021-11-02 17:03:16,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:03:16,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:03:16,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:03:16,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:03:16,294 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) [2021-11-02 17:03:18,868 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 [] [2021-11-02 17:03:20,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:03:23,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:03:26,352 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:03:28,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:03:37,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:03:46,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:04:15,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:04:15,109 INFO L93 Difference]: Finished difference Result 19616 states and 25273 transitions. [2021-11-02 17:04:15,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:04:15,109 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 [2021-11-02 17:04:15,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:04:15,146 INFO L225 Difference]: With dead ends: 19616 [2021-11-02 17:04:15,147 INFO L226 Difference]: Without dead ends: 11540 [2021-11-02 17:04:15,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:04:15,163 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4409 mSDsluCounter, 10185 mSDsCounter, 0 mSdLazyCounter, 20376 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54689.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4409 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.52ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20376 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58088.94ms IncrementalHoareTripleChecker+Time [2021-11-02 17:04:15,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4409 Valid, 0 Invalid, 20383 Unknown, 0 Unchecked, 47.52ms Time], IncrementalHoareTripleChecker [1 Valid, 20376 Invalid, 6 Unknown, 0 Unchecked, 58088.94ms Time] [2021-11-02 17:04:15,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11540 states. [2021-11-02 17:04:15,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11540 to 11499. [2021-11-02 17:04:15,396 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) [2021-11-02 17:04:15,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11499 states to 11499 states and 14825 transitions. [2021-11-02 17:04:15,418 INFO L78 Accepts]: Start accepts. Automaton has 11499 states and 14825 transitions. Word has length 17 [2021-11-02 17:04:15,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:04:15,419 INFO L470 AbstractCegarLoop]: Abstraction has 11499 states and 14825 transitions. [2021-11-02 17:04:15,419 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) [2021-11-02 17:04:15,420 INFO L276 IsEmpty]: Start isEmpty. Operand 11499 states and 14825 transitions. [2021-11-02 17:04:15,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-02 17:04:15,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:04:15,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:04:15,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 17:04:15,425 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)] === [2021-11-02 17:04:15,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:04:15,426 INFO L85 PathProgramCache]: Analyzing trace with hash -568284282, now seen corresponding path program 1 times [2021-11-02 17:04:15,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:04:15,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493398335] [2021-11-02 17:04:15,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:04:15,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:04:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:04:15,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:04:15,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:04:15,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493398335] [2021-11-02 17:04:15,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493398335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:04:15,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:04:15,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:04:15,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149844780] [2021-11-02 17:04:15,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:04:15,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:04:15,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:04:15,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:04:15,543 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) [2021-11-02 17:04:18,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:04:20,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:04:25,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:04:28,245 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:04:30,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:04:47,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:04:49,374 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:04:57,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:05:02,624 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 [] [2021-11-02 17:05:26,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:05:26,852 INFO L93 Difference]: Finished difference Result 29499 states and 38032 transitions. [2021-11-02 17:05:26,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:05:26,853 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 [2021-11-02 17:05:26,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:05:26,903 INFO L225 Difference]: With dead ends: 29499 [2021-11-02 17:05:26,903 INFO L226 Difference]: Without dead ends: 18003 [2021-11-02 17:05:26,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:05:26,927 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4377 mSDsluCounter, 10177 mSDsCounter, 0 mSdLazyCounter, 24521 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66418.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4377 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.41ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24521 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70457.52ms IncrementalHoareTripleChecker+Time [2021-11-02 17:05:26,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4377 Valid, 0 Invalid, 24531 Unknown, 0 Unchecked, 51.41ms Time], IncrementalHoareTripleChecker [3 Valid, 24521 Invalid, 7 Unknown, 0 Unchecked, 70457.52ms Time] [2021-11-02 17:05:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18003 states. [2021-11-02 17:05:27,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18003 to 17989. [2021-11-02 17:05:27,346 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) [2021-11-02 17:05:27,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17989 states to 17989 states and 23191 transitions. [2021-11-02 17:05:27,377 INFO L78 Accepts]: Start accepts. Automaton has 17989 states and 23191 transitions. Word has length 18 [2021-11-02 17:05:27,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:05:27,377 INFO L470 AbstractCegarLoop]: Abstraction has 17989 states and 23191 transitions. [2021-11-02 17:05:27,377 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) [2021-11-02 17:05:27,378 INFO L276 IsEmpty]: Start isEmpty. Operand 17989 states and 23191 transitions. [2021-11-02 17:05:27,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 17:05:27,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:05:27,381 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] [2021-11-02 17:05:27,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 17:05:27,382 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)] === [2021-11-02 17:05:27,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:05:27,382 INFO L85 PathProgramCache]: Analyzing trace with hash 340776562, now seen corresponding path program 1 times [2021-11-02 17:05:27,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:05:27,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150795003] [2021-11-02 17:05:27,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:05:27,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:05:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:05:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:05:27,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:05:27,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150795003] [2021-11-02 17:05:27,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150795003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:05:27,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:05:27,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:05:27,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040175579] [2021-11-02 17:05:27,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:05:27,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:05:27,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:05:27,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:05:27,463 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) [2021-11-02 17:05:31,068 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 [] [2021-11-02 17:05:33,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:05:35,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:05:39,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:05:41,627 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:05:50,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:05:55,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:06:02,553 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 [] [2021-11-02 17:06:22,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:06:22,435 INFO L93 Difference]: Finished difference Result 36121 states and 46565 transitions. [2021-11-02 17:06:22,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:06:22,436 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 [2021-11-02 17:06:22,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:06:22,471 INFO L225 Difference]: With dead ends: 36121 [2021-11-02 17:06:22,471 INFO L226 Difference]: Without dead ends: 18135 [2021-11-02 17:06:22,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.88ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:06:22,498 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 89 mSDsluCounter, 10183 mSDsCounter, 0 mSdLazyCounter, 20378 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51054.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.89ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20378 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54240.57ms IncrementalHoareTripleChecker+Time [2021-11-02 17:06:22,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 0 Invalid, 20385 Unknown, 0 Unchecked, 34.89ms Time], IncrementalHoareTripleChecker [0 Valid, 20378 Invalid, 7 Unknown, 0 Unchecked, 54240.57ms Time] [2021-11-02 17:06:22,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18135 states. [2021-11-02 17:06:22,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18135 to 17991. [2021-11-02 17:06:22,811 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) [2021-11-02 17:06:22,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17991 states to 17991 states and 23193 transitions. [2021-11-02 17:06:22,839 INFO L78 Accepts]: Start accepts. Automaton has 17991 states and 23193 transitions. Word has length 22 [2021-11-02 17:06:22,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:06:22,839 INFO L470 AbstractCegarLoop]: Abstraction has 17991 states and 23193 transitions. [2021-11-02 17:06:22,839 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) [2021-11-02 17:06:22,839 INFO L276 IsEmpty]: Start isEmpty. Operand 17991 states and 23193 transitions. [2021-11-02 17:06:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-02 17:06:22,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:06:22,842 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] [2021-11-02 17:06:22,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 17:06:22,842 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)] === [2021-11-02 17:06:22,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:06:22,842 INFO L85 PathProgramCache]: Analyzing trace with hash 680206091, now seen corresponding path program 1 times [2021-11-02 17:06:22,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:06:22,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233525982] [2021-11-02 17:06:22,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:06:22,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:06:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:06:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:06:22,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:06:22,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233525982] [2021-11-02 17:06:22,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233525982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:06:22,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:06:22,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:06:22,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137739055] [2021-11-02 17:06:22,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:06:22,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:06:22,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:06:22,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:06:22,956 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) [2021-11-02 17:06:25,855 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 [] [2021-11-02 17:06:28,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:06:30,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:06:32,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:06:37,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:06:49,036 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:06:51,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:06:54,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:06:56,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:06:59,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:07:07,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:07:27,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:07:27,649 INFO L93 Difference]: Finished difference Result 49084 states and 63279 transitions. [2021-11-02 17:07:27,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:07:27,650 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 [2021-11-02 17:07:27,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:07:27,794 INFO L225 Difference]: With dead ends: 49084 [2021-11-02 17:07:27,801 INFO L226 Difference]: Without dead ends: 31096 [2021-11-02 17:07:27,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:07:27,829 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4324 mSDsluCounter, 10106 mSDsCounter, 0 mSdLazyCounter, 20317 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59892.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4324 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.09ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20317 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63773.33ms IncrementalHoareTripleChecker+Time [2021-11-02 17:07:27,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4324 Valid, 0 Invalid, 20326 Unknown, 0 Unchecked, 34.09ms Time], IncrementalHoareTripleChecker [1 Valid, 20317 Invalid, 8 Unknown, 0 Unchecked, 63773.33ms Time] [2021-11-02 17:07:27,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31096 states. [2021-11-02 17:07:28,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31096 to 18003. [2021-11-02 17:07:28,174 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) [2021-11-02 17:07:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18003 states to 18003 states and 23209 transitions. [2021-11-02 17:07:28,201 INFO L78 Accepts]: Start accepts. Automaton has 18003 states and 23209 transitions. Word has length 27 [2021-11-02 17:07:28,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:07:28,201 INFO L470 AbstractCegarLoop]: Abstraction has 18003 states and 23209 transitions. [2021-11-02 17:07:28,201 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) [2021-11-02 17:07:28,202 INFO L276 IsEmpty]: Start isEmpty. Operand 18003 states and 23209 transitions. [2021-11-02 17:07:28,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-02 17:07:28,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:07:28,203 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] [2021-11-02 17:07:28,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 17:07:28,203 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)] === [2021-11-02 17:07:28,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:07:28,204 INFO L85 PathProgramCache]: Analyzing trace with hash 503225488, now seen corresponding path program 1 times [2021-11-02 17:07:28,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:07:28,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600269446] [2021-11-02 17:07:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:07:28,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:07:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:07:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:07:28,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:07:28,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600269446] [2021-11-02 17:07:28,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600269446] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:07:28,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36067222] [2021-11-02 17:07:28,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:07:28,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:07:28,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:07:28,315 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) [2021-11-02 17:07:28,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 17:07:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:07:28,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:07:28,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:07:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:07:28,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:07:28,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36067222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:07:28,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:07:28,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:07:28,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036486738] [2021-11-02 17:07:28,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:07:28,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:07:28,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:07:28,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:07:28,829 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) [2021-11-02 17:07:31,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:07:33,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:07:35,826 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:07:37,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:07:42,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:07:55,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:08:21,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:08:21,170 INFO L93 Difference]: Finished difference Result 49376 states and 63649 transitions. [2021-11-02 17:08:21,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:08:21,171 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 [2021-11-02 17:08:21,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:08:21,247 INFO L225 Difference]: With dead ends: 49376 [2021-11-02 17:08:21,247 INFO L226 Difference]: Without dead ends: 31376 [2021-11-02 17:08:21,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.25ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:08:21,285 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4404 mSDsluCounter, 10186 mSDsCounter, 0 mSdLazyCounter, 20401 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47951.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4404 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.79ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20401 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51546.90ms IncrementalHoareTripleChecker+Time [2021-11-02 17:08:21,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4404 Valid, 0 Invalid, 20407 Unknown, 0 Unchecked, 27.79ms Time], IncrementalHoareTripleChecker [1 Valid, 20401 Invalid, 5 Unknown, 0 Unchecked, 51546.90ms Time] [2021-11-02 17:08:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31376 states. [2021-11-02 17:08:21,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31376 to 18289. [2021-11-02 17:08:21,816 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) [2021-11-02 17:08:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18289 states to 18289 states and 23573 transitions. [2021-11-02 17:08:21,842 INFO L78 Accepts]: Start accepts. Automaton has 18289 states and 23573 transitions. Word has length 29 [2021-11-02 17:08:21,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:08:21,842 INFO L470 AbstractCegarLoop]: Abstraction has 18289 states and 23573 transitions. [2021-11-02 17:08:21,842 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) [2021-11-02 17:08:21,842 INFO L276 IsEmpty]: Start isEmpty. Operand 18289 states and 23573 transitions. [2021-11-02 17:08:21,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-02 17:08:21,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:08:21,843 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] [2021-11-02 17:08:21,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 17:08:22,062 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 [2021-11-02 17:08:22,062 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)] === [2021-11-02 17:08:22,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:08:22,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1183283858, now seen corresponding path program 1 times [2021-11-02 17:08:22,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:08:22,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532453372] [2021-11-02 17:08:22,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:08:22,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:08:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:08:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:08:22,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:08:22,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532453372] [2021-11-02 17:08:22,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532453372] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:08:22,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236070269] [2021-11-02 17:08:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:08:22,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:08:22,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:08:22,146 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) [2021-11-02 17:08:22,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 17:08:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:08:22,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:08:22,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:08:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:08:22,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:08:22,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236070269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:08:22,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:08:22,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:08:22,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774283651] [2021-11-02 17:08:22,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:08:22,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:08:22,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:08:22,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:08:22,634 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) [2021-11-02 17:08:25,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:08:27,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:08:29,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:08:31,422 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:08:35,503 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:08:44,974 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:08:47,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:08:49,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:08:56,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:09:06,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:09:28,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:09:28,618 INFO L93 Difference]: Finished difference Result 22209 states and 28604 transitions. [2021-11-02 17:09:28,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:09:28,619 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 [2021-11-02 17:09:28,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:09:28,687 INFO L225 Difference]: With dead ends: 22209 [2021-11-02 17:09:28,688 INFO L226 Difference]: Without dead ends: 22197 [2021-11-02 17:09:28,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.58ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:09:28,711 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4415 mSDsluCounter, 10182 mSDsCounter, 0 mSdLazyCounter, 20386 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60892.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.32ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20386 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65251.97ms IncrementalHoareTripleChecker+Time [2021-11-02 17:09:28,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4415 Valid, 0 Invalid, 20394 Unknown, 0 Unchecked, 35.32ms Time], IncrementalHoareTripleChecker [2 Valid, 20386 Invalid, 6 Unknown, 0 Unchecked, 65251.97ms Time] [2021-11-02 17:09:28,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22197 states. [2021-11-02 17:09:29,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22197 to 18291. [2021-11-02 17:09:29,235 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) [2021-11-02 17:09:29,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18291 states to 18291 states and 23573 transitions. [2021-11-02 17:09:29,258 INFO L78 Accepts]: Start accepts. Automaton has 18291 states and 23573 transitions. Word has length 29 [2021-11-02 17:09:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:09:29,259 INFO L470 AbstractCegarLoop]: Abstraction has 18291 states and 23573 transitions. [2021-11-02 17:09:29,260 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) [2021-11-02 17:09:29,260 INFO L276 IsEmpty]: Start isEmpty. Operand 18291 states and 23573 transitions. [2021-11-02 17:09:29,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-02 17:09:29,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:09:29,262 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] [2021-11-02 17:09:29,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-02 17:09:29,475 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 [2021-11-02 17:09:29,476 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)] === [2021-11-02 17:09:29,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:09:29,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1183343440, now seen corresponding path program 1 times [2021-11-02 17:09:29,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:09:29,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148606877] [2021-11-02 17:09:29,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:09:29,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:09:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:09:29,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:09:29,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:09:29,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148606877] [2021-11-02 17:09:29,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148606877] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:09:29,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456516691] [2021-11-02 17:09:29,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:09:29,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:09:29,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:09:29,552 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) [2021-11-02 17:09:29,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 17:09:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:09:29,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:09:29,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:09:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:09:30,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:09:30,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456516691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:09:30,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:09:30,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:09:30,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560457219] [2021-11-02 17:09:30,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:09:30,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:09:30,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:09:30,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:09:30,034 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) [2021-11-02 17:09:32,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:09:34,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:09:36,872 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:09:38,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:09:42,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:09:49,151 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:09:54,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:10:01,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:10:32,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:10:32,743 INFO L93 Difference]: Finished difference Result 25430 states and 32760 transitions. [2021-11-02 17:10:32,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:10:32,744 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 [2021-11-02 17:10:32,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:10:32,784 INFO L225 Difference]: With dead ends: 25430 [2021-11-02 17:10:32,785 INFO L226 Difference]: Without dead ends: 25428 [2021-11-02 17:10:32,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.50ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:10:32,797 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4390 mSDsluCounter, 10176 mSDsCounter, 0 mSdLazyCounter, 20367 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56991.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4390 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.67ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20367 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61894.05ms IncrementalHoareTripleChecker+Time [2021-11-02 17:10:32,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4390 Valid, 0 Invalid, 20375 Unknown, 0 Unchecked, 38.67ms Time], IncrementalHoareTripleChecker [1 Valid, 20367 Invalid, 7 Unknown, 0 Unchecked, 61894.05ms Time] [2021-11-02 17:10:32,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25428 states. [2021-11-02 17:10:33,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25428 to 25414. [2021-11-02 17:10:33,406 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) [2021-11-02 17:10:33,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25414 states to 25414 states and 32751 transitions. [2021-11-02 17:10:33,456 INFO L78 Accepts]: Start accepts. Automaton has 25414 states and 32751 transitions. Word has length 29 [2021-11-02 17:10:33,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:10:33,457 INFO L470 AbstractCegarLoop]: Abstraction has 25414 states and 32751 transitions. [2021-11-02 17:10:33,457 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) [2021-11-02 17:10:33,457 INFO L276 IsEmpty]: Start isEmpty. Operand 25414 states and 32751 transitions. [2021-11-02 17:10:33,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-02 17:10:33,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:10:33,458 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] [2021-11-02 17:10:33,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-02 17:10:33,671 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 [2021-11-02 17:10:33,672 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)] === [2021-11-02 17:10:33,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:10:33,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1971035396, now seen corresponding path program 1 times [2021-11-02 17:10:33,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:10:33,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736638217] [2021-11-02 17:10:33,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:10:33,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:10:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:10:33,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:10:33,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:10:33,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736638217] [2021-11-02 17:10:33,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736638217] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:10:33,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182341051] [2021-11-02 17:10:33,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:10:33,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:10:33,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:10:33,759 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) [2021-11-02 17:10:33,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 17:10:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:10:34,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:10:34,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:10:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:10:34,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:10:34,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182341051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:10:34,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:10:34,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:10:34,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173465687] [2021-11-02 17:10:34,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:10:34,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:10:34,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:10:34,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:10:34,362 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) [2021-11-02 17:10:37,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:10:39,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:10:41,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:10:43,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:10:46,442 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:10:58,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:11:06,103 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 [] [2021-11-02 17:11:36,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:11:36,076 INFO L93 Difference]: Finished difference Result 25431 states and 32761 transitions. [2021-11-02 17:11:36,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:11:36,076 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 [2021-11-02 17:11:36,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:11:36,116 INFO L225 Difference]: With dead ends: 25431 [2021-11-02 17:11:36,116 INFO L226 Difference]: Without dead ends: 25429 [2021-11-02 17:11:36,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.50ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:11:36,130 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4387 mSDsluCounter, 10180 mSDsCounter, 0 mSdLazyCounter, 20372 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55931.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4387 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.40ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20372 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60870.28ms IncrementalHoareTripleChecker+Time [2021-11-02 17:11:36,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4387 Valid, 0 Invalid, 20379 Unknown, 0 Unchecked, 33.40ms Time], IncrementalHoareTripleChecker [1 Valid, 20372 Invalid, 6 Unknown, 0 Unchecked, 60870.28ms Time] [2021-11-02 17:11:36,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25429 states. [2021-11-02 17:11:36,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25429 to 25415. [2021-11-02 17:11:36,732 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) [2021-11-02 17:11:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25415 states to 25415 states and 32752 transitions. [2021-11-02 17:11:36,794 INFO L78 Accepts]: Start accepts. Automaton has 25415 states and 32752 transitions. Word has length 30 [2021-11-02 17:11:36,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:11:36,794 INFO L470 AbstractCegarLoop]: Abstraction has 25415 states and 32752 transitions. [2021-11-02 17:11:36,794 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) [2021-11-02 17:11:36,795 INFO L276 IsEmpty]: Start isEmpty. Operand 25415 states and 32752 transitions. [2021-11-02 17:11:36,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 17:11:36,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:11:36,796 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] [2021-11-02 17:11:36,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-02 17:11:36,999 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 [2021-11-02 17:11:37,000 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)] === [2021-11-02 17:11:37,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:11:37,000 INFO L85 PathProgramCache]: Analyzing trace with hash -972531494, now seen corresponding path program 1 times [2021-11-02 17:11:37,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:11:37,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655722612] [2021-11-02 17:11:37,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:11:37,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:11:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:11:37,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:11:37,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:11:37,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655722612] [2021-11-02 17:11:37,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655722612] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:11:37,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428464312] [2021-11-02 17:11:37,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:11:37,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:11:37,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:11:37,115 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) [2021-11-02 17:11:37,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 17:11:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:11:37,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:11:37,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:11:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:11:37,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:11:37,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428464312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:11:37,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:11:37,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:11:37,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614564459] [2021-11-02 17:11:37,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:11:37,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:11:37,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:11:37,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:11:37,697 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) [2021-11-02 17:11:40,711 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 [] [2021-11-02 17:11:42,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:11:44,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:11:47,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:11:50,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:12:35,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:12:35,275 INFO L93 Difference]: Finished difference Result 25432 states and 32762 transitions. [2021-11-02 17:12:35,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:12:35,276 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 [2021-11-02 17:12:35,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:12:35,319 INFO L225 Difference]: With dead ends: 25432 [2021-11-02 17:12:35,319 INFO L226 Difference]: Without dead ends: 25430 [2021-11-02 17:12:35,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.78ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:12:35,332 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4384 mSDsluCounter, 10184 mSDsCounter, 0 mSdLazyCounter, 20377 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51856.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4384 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.80ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20377 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56714.15ms IncrementalHoareTripleChecker+Time [2021-11-02 17:12:35,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4384 Valid, 0 Invalid, 20383 Unknown, 0 Unchecked, 31.80ms Time], IncrementalHoareTripleChecker [1 Valid, 20377 Invalid, 5 Unknown, 0 Unchecked, 56714.15ms Time] [2021-11-02 17:12:35,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25430 states. [2021-11-02 17:12:35,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25430 to 25416. [2021-11-02 17:12:35,965 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) [2021-11-02 17:12:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25416 states to 25416 states and 32753 transitions. [2021-11-02 17:12:36,005 INFO L78 Accepts]: Start accepts. Automaton has 25416 states and 32753 transitions. Word has length 31 [2021-11-02 17:12:36,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:12:36,005 INFO L470 AbstractCegarLoop]: Abstraction has 25416 states and 32753 transitions. [2021-11-02 17:12:36,005 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) [2021-11-02 17:12:36,005 INFO L276 IsEmpty]: Start isEmpty. Operand 25416 states and 32753 transitions. [2021-11-02 17:12:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 17:12:36,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:12:36,007 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] [2021-11-02 17:12:36,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 17:12:36,226 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 [2021-11-02 17:12:36,226 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)] === [2021-11-02 17:12:36,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:12:36,227 INFO L85 PathProgramCache]: Analyzing trace with hash -83681594, now seen corresponding path program 1 times [2021-11-02 17:12:36,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:12:36,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854098685] [2021-11-02 17:12:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:12:36,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:12:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:12:36,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:12:36,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:12:36,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854098685] [2021-11-02 17:12:36,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854098685] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:12:36,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247261863] [2021-11-02 17:12:36,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:12:36,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:12:36,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:12:36,296 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) [2021-11-02 17:12:36,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 17:12:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:12:36,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:12:36,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:12:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:12:36,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:12:36,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247261863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:12:36,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:12:36,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:12:36,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815543693] [2021-11-02 17:12:36,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:12:36,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:12:36,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:12:36,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:12:36,825 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) [2021-11-02 17:12:39,691 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:12:41,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:12:43,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:12:45,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:12:49,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:12:57,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:13:00,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:13:01,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:13:36,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:13:36,543 INFO L93 Difference]: Finished difference Result 36652 states and 47266 transitions. [2021-11-02 17:13:36,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:13:36,543 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 [2021-11-02 17:13:36,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:13:36,602 INFO L225 Difference]: With dead ends: 36652 [2021-11-02 17:13:36,602 INFO L226 Difference]: Without dead ends: 36625 [2021-11-02 17:13:36,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.88ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:13:36,619 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3629 mSDsluCounter, 10150 mSDsCounter, 0 mSdLazyCounter, 20366 mSolverCounterSat, 11 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53798.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3629 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.34ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 20366 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58669.38ms IncrementalHoareTripleChecker+Time [2021-11-02 17:13:36,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3629 Valid, 0 Invalid, 20382 Unknown, 0 Unchecked, 30.34ms Time], IncrementalHoareTripleChecker [11 Valid, 20366 Invalid, 5 Unknown, 0 Unchecked, 58669.38ms Time] [2021-11-02 17:13:36,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36625 states. [2021-11-02 17:13:37,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36625 to 36619. [2021-11-02 17:13:37,526 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) [2021-11-02 17:13:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36619 states to 36619 states and 47213 transitions. [2021-11-02 17:13:37,585 INFO L78 Accepts]: Start accepts. Automaton has 36619 states and 47213 transitions. Word has length 32 [2021-11-02 17:13:37,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:13:37,585 INFO L470 AbstractCegarLoop]: Abstraction has 36619 states and 47213 transitions. [2021-11-02 17:13:37,585 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) [2021-11-02 17:13:37,586 INFO L276 IsEmpty]: Start isEmpty. Operand 36619 states and 47213 transitions. [2021-11-02 17:13:37,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 17:13:37,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:13:37,587 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] [2021-11-02 17:13:37,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-02 17:13:37,806 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 [2021-11-02 17:13:37,806 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)] === [2021-11-02 17:13:37,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:13:37,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1242889825, now seen corresponding path program 1 times [2021-11-02 17:13:37,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:13:37,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088495311] [2021-11-02 17:13:37,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:13:37,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:13:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:13:37,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:13:37,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:13:37,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088495311] [2021-11-02 17:13:37,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088495311] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:13:37,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390737782] [2021-11-02 17:13:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:13:37,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:13:37,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:13:37,885 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) [2021-11-02 17:13:37,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 17:13:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:13:38,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 17:13:38,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:13:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:13:38,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:13:38,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390737782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:13:38,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:13:38,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:13:38,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519834142] [2021-11-02 17:13:38,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:13:38,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:13:38,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:13:38,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:13:38,398 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) [2021-11-02 17:13:41,466 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:13:43,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:13:45,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:13:47,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:13:52,379 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:14:01,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:14:06,806 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 [] [2021-11-02 17:14:34,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:14:34,581 INFO L93 Difference]: Finished difference Result 73271 states and 94475 transitions. [2021-11-02 17:14:34,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:14:34,582 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 [2021-11-02 17:14:34,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:14:34,649 INFO L225 Difference]: With dead ends: 73271 [2021-11-02 17:14:34,649 INFO L226 Difference]: Without dead ends: 36655 [2021-11-02 17:14:34,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.59ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:14:34,708 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 10179 mSDsCounter, 0 mSdLazyCounter, 20379 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50786.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.99ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20379 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55082.94ms IncrementalHoareTripleChecker+Time [2021-11-02 17:14:34,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 20387 Unknown, 0 Unchecked, 28.99ms Time], IncrementalHoareTripleChecker [2 Valid, 20379 Invalid, 6 Unknown, 0 Unchecked, 55082.94ms Time] [2021-11-02 17:14:34,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36655 states. [2021-11-02 17:14:35,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36655 to 36627. [2021-11-02 17:14:35,705 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) [2021-11-02 17:14:35,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36627 states to 36627 states and 47221 transitions. [2021-11-02 17:14:35,762 INFO L78 Accepts]: Start accepts. Automaton has 36627 states and 47221 transitions. Word has length 47 [2021-11-02 17:14:35,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:14:35,763 INFO L470 AbstractCegarLoop]: Abstraction has 36627 states and 47221 transitions. [2021-11-02 17:14:35,763 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) [2021-11-02 17:14:35,763 INFO L276 IsEmpty]: Start isEmpty. Operand 36627 states and 47221 transitions. [2021-11-02 17:14:35,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 17:14:35,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:14:35,769 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] [2021-11-02 17:14:35,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 17:14:35,988 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 [2021-11-02 17:14:35,988 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)] === [2021-11-02 17:14:35,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:14:35,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1524248982, now seen corresponding path program 1 times [2021-11-02 17:14:35,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:14:35,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687959851] [2021-11-02 17:14:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:14:35,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:14:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:14:36,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:14:36,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:14:36,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687959851] [2021-11-02 17:14:36,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687959851] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:14:36,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287131254] [2021-11-02 17:14:36,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:14:36,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:14:36,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:14:36,080 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) [2021-11-02 17:14:36,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 17:14:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:14:36,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:14:36,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:14:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 17:14:36,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:14:36,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287131254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:14:36,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:14:36,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:14:36,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312623430] [2021-11-02 17:14:36,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:14:36,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:14:36,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:14:36,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:14:36,627 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) [2021-11-02 17:14:39,564 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 [] [2021-11-02 17:14:41,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:14:43,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:14:45,777 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:14:51,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:15:28,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:15:28,340 INFO L93 Difference]: Finished difference Result 36632 states and 47226 transitions. [2021-11-02 17:15:28,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:15:28,341 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 [2021-11-02 17:15:28,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:15:28,501 INFO L225 Difference]: With dead ends: 36632 [2021-11-02 17:15:28,501 INFO L226 Difference]: Without dead ends: 36624 [2021-11-02 17:15:28,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.64ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:15:28,510 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 736 mSDsluCounter, 9427 mSDsCounter, 0 mSdLazyCounter, 19628 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46593.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.29ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19628 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50838.45ms IncrementalHoareTripleChecker+Time [2021-11-02 17:15:28,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [736 Valid, 0 Invalid, 19640 Unknown, 0 Unchecked, 27.29ms Time], IncrementalHoareTripleChecker [7 Valid, 19628 Invalid, 5 Unknown, 0 Unchecked, 50838.45ms Time] [2021-11-02 17:15:28,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36624 states. [2021-11-02 17:15:29,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36624 to 36624. [2021-11-02 17:15:29,276 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) [2021-11-02 17:15:29,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36624 states to 36624 states and 47198 transitions. [2021-11-02 17:15:29,342 INFO L78 Accepts]: Start accepts. Automaton has 36624 states and 47198 transitions. Word has length 51 [2021-11-02 17:15:29,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:15:29,342 INFO L470 AbstractCegarLoop]: Abstraction has 36624 states and 47198 transitions. [2021-11-02 17:15:29,343 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) [2021-11-02 17:15:29,343 INFO L276 IsEmpty]: Start isEmpty. Operand 36624 states and 47198 transitions. [2021-11-02 17:15:29,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 17:15:29,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:15:29,348 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] [2021-11-02 17:15:29,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 17:15:29,566 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 [2021-11-02 17:15:29,567 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)] === [2021-11-02 17:15:29,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:15:29,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1779926187, now seen corresponding path program 1 times [2021-11-02 17:15:29,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:15:29,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788741679] [2021-11-02 17:15:29,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:15:29,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:15:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:15:29,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:15:29,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:15:29,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788741679] [2021-11-02 17:15:29,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788741679] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:15:29,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156610551] [2021-11-02 17:15:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:15:29,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:15:29,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:15:29,752 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) [2021-11-02 17:15:29,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 17:15:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:15:30,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 17:15:30,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:15:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:15:30,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:15:30,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156610551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:15:30,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:15:30,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:15:30,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996085882] [2021-11-02 17:15:30,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:15:30,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:15:30,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:15:30,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:15:30,368 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) [2021-11-02 17:15:33,476 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:15:35,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:15:37,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:15:39,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:15:44,763 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:15:57,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:15:59,336 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:16:09,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:16:30,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:16:30,970 INFO L93 Difference]: Finished difference Result 73661 states and 94913 transitions. [2021-11-02 17:16:30,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:16:30,970 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 66 [2021-11-02 17:16:30,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:16:31,036 INFO L225 Difference]: With dead ends: 73661 [2021-11-02 17:16:31,037 INFO L226 Difference]: Without dead ends: 37040 [2021-11-02 17:16:31,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.52ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:16:31,087 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 10139 mSDsCounter, 0 mSdLazyCounter, 20358 mSolverCounterSat, 14 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54685.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.26ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 20358 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59349.71ms IncrementalHoareTripleChecker+Time [2021-11-02 17:16:31,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 20379 Unknown, 0 Unchecked, 31.26ms Time], IncrementalHoareTripleChecker [14 Valid, 20358 Invalid, 7 Unknown, 0 Unchecked, 59349.71ms Time] [2021-11-02 17:16:31,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37040 states. [2021-11-02 17:16:32,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37040 to 36728. [2021-11-02 17:16:32,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36728 states, 36719 states have (on average 1.288215910019336) internal successors, (47302), 36727 states have internal predecessors, (47302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:16:32,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36728 states to 36728 states and 47302 transitions. [2021-11-02 17:16:32,116 INFO L78 Accepts]: Start accepts. Automaton has 36728 states and 47302 transitions. Word has length 66 [2021-11-02 17:16:32,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:16:32,116 INFO L470 AbstractCegarLoop]: Abstraction has 36728 states and 47302 transitions. [2021-11-02 17:16:32,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-11-02 17:16:32,117 INFO L276 IsEmpty]: Start isEmpty. Operand 36728 states and 47302 transitions. [2021-11-02 17:16:32,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 17:16:32,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:16:32,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:16:32,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 17:16:32,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-02 17:16:32,334 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 17:16:32,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:16:32,335 INFO L85 PathProgramCache]: Analyzing trace with hash -2061573809, now seen corresponding path program 1 times [2021-11-02 17:16:32,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:16:32,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205441835] [2021-11-02 17:16:32,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:16:32,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:16:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:16:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:16:32,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:16:32,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205441835] [2021-11-02 17:16:32,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205441835] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:16:32,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828530091] [2021-11-02 17:16:32,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:16:32,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:16:32,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:16:32,492 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:16:32,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 17:16:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:16:32,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:16:32,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:16:33,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 17:16:33,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:16:33,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828530091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:16:33,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:16:33,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:16:33,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59176283] [2021-11-02 17:16:33,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:16:33,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:16:33,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:16:33,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:16:33,089 INFO L87 Difference]: Start difference. First operand 36728 states and 47302 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:16:36,072 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 [] Killed by 15