./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.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-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.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 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 19:49:57,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 19:49:57,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 19:49:58,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 19:49:58,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 19:49:58,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 19:49:58,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 19:49:58,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 19:49:58,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 19:49:58,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 19:49:58,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 19:49:58,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 19:49:58,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 19:49:58,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 19:49:58,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 19:49:58,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 19:49:58,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 19:49:58,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 19:49:58,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 19:49:58,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 19:49:58,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 19:49:58,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 19:49:58,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 19:49:58,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 19:49:58,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 19:49:58,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 19:49:58,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 19:49:58,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 19:49:58,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 19:49:58,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 19:49:58,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 19:49:58,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 19:49:58,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 19:49:58,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 19:49:58,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 19:49:58,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 19:49:58,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 19:49:58,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 19:49:58,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 19:49:58,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 19:49:58,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 19:49:58,083 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 19:49:58,106 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 19:49:58,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 19:49:58,109 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 19:49:58,109 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 19:49:58,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 19:49:58,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 19:49:58,111 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 19:49:58,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 19:49:58,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 19:49:58,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 19:49:58,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 19:49:58,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 19:49:58,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 19:49:58,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 19:49:58,112 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 19:49:58,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 19:49:58,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 19:49:58,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 19:49:58,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 19:49:58,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 19:49:58,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 19:49:58,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 19:49:58,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 19:49:58,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 19:49:58,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 19:49:58,114 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 19:49:58,114 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 19:49:58,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 19:49:58,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 19:49:58,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd [2021-11-02 19:49:58,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 19:49:58,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 19:49:58,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 19:49:58,338 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 19:49:58,339 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 19:49:58,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-02 19:49:58,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bd0c3708/90a67c5a280e4481bf5718dcbe61946c/FLAGa60101073 [2021-11-02 19:49:59,061 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 19:49:59,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-02 19:49:59,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bd0c3708/90a67c5a280e4481bf5718dcbe61946c/FLAGa60101073 [2021-11-02 19:49:59,135 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bd0c3708/90a67c5a280e4481bf5718dcbe61946c [2021-11-02 19:49:59,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 19:49:59,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 19:49:59,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 19:49:59,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 19:49:59,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 19:49:59,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:49:59" (1/1) ... [2021-11-02 19:49:59,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61bb2a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:49:59, skipping insertion in model container [2021-11-02 19:49:59,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:49:59" (1/1) ... [2021-11-02 19:49:59,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 19:49:59,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 19:50:00,749 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-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-02 19:50:00,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 19:50:00,814 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 19:50:01,031 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-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-02 19:50:01,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 19:50:01,189 INFO L208 MainTranslator]: Completed translation [2021-11-02 19:50:01,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:01 WrapperNode [2021-11-02 19:50:01,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 19:50:01,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 19:50:01,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 19:50:01,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 19:50:01,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:01" (1/1) ... [2021-11-02 19:50:01,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:01" (1/1) ... [2021-11-02 19:50:02,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 19:50:02,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 19:50:02,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 19:50:02,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 19:50:02,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:01" (1/1) ... [2021-11-02 19:50:02,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:01" (1/1) ... [2021-11-02 19:50:02,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:01" (1/1) ... [2021-11-02 19:50:02,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:01" (1/1) ... [2021-11-02 19:50:02,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:01" (1/1) ... [2021-11-02 19:50:02,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:01" (1/1) ... [2021-11-02 19:50:03,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:01" (1/1) ... [2021-11-02 19:50:03,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 19:50:03,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 19:50:03,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 19:50:03,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 19:50:03,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:01" (1/1) ... [2021-11-02 19:50:03,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 19:50:03,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 19:50:03,337 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 19:50:03,380 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 19:50:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 19:50:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 19:50:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 19:50:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 19:50:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 19:50:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 19:50:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 19:50:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 19:50:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 19:50:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 19:50:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 19:50:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 19:50:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 19:50:03,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 19:50:03,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 19:50:07,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 19:50:07,905 INFO L299 CfgBuilder]: Removed 8487 assume(true) statements. [2021-11-02 19:50:07,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:50:07 BoogieIcfgContainer [2021-11-02 19:50:07,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 19:50:07,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 19:50:07,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 19:50:07,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 19:50:07,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:49:59" (1/3) ... [2021-11-02 19:50:07,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a20cd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:50:07, skipping insertion in model container [2021-11-02 19:50:07,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:01" (2/3) ... [2021-11-02 19:50:07,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a20cd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:50:07, skipping insertion in model container [2021-11-02 19:50:07,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:50:07" (3/3) ... [2021-11-02 19:50:07,919 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-02 19:50:07,924 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 19:50:07,925 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-02 19:50:07,976 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 19:50:07,983 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 19:50:07,983 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-02 19:50:08,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 5110 states, 5103 states have (on average 1.231628453850676) internal successors, (6285), 5109 states have internal predecessors, (6285), 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 19:50:08,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 19:50:08,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:50:08,055 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] [2021-11-02 19:50:08,056 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 19:50:08,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:50:08,060 INFO L85 PathProgramCache]: Analyzing trace with hash -623761508, now seen corresponding path program 1 times [2021-11-02 19:50:08,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:50:08,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639343152] [2021-11-02 19:50:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:50:08,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:50:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:50:08,428 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 19:50:08,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:50:08,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639343152] [2021-11-02 19:50:08,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639343152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:50:08,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:50:08,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 19:50:08,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169972088] [2021-11-02 19:50:08,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 19:50:08,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:50:08,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 19:50:08,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 19:50:08,458 INFO L87 Difference]: Start difference. First operand has 5110 states, 5103 states have (on average 1.231628453850676) internal successors, (6285), 5109 states have internal predecessors, (6285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 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 19:50:12,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:50:15,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:50:17,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:50:20,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:50:23,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:50:23,354 INFO L93 Difference]: Finished difference Result 10186 states and 12525 transitions. [2021-11-02 19:50:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 19:50:23,357 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 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 69 [2021-11-02 19:50:23,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:50:23,391 INFO L225 Difference]: With dead ends: 10186 [2021-11-02 19:50:23,391 INFO L226 Difference]: Without dead ends: 5056 [2021-11-02 19:50:23,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 19:50:23,410 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6173 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13401.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 6175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.82ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6173 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14642.99ms IncrementalHoareTripleChecker+Time [2021-11-02 19:50:23,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 6175 Unknown, 0 Unchecked, 11.82ms Time], IncrementalHoareTripleChecker [0 Valid, 6173 Invalid, 2 Unknown, 0 Unchecked, 14642.99ms Time] [2021-11-02 19:50:23,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2021-11-02 19:50:23,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 5056. [2021-11-02 19:50:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5056 states, 5050 states have (on average 1.218019801980198) internal successors, (6151), 5055 states have internal predecessors, (6151), 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 19:50:23,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5056 states to 5056 states and 6151 transitions. [2021-11-02 19:50:23,595 INFO L78 Accepts]: Start accepts. Automaton has 5056 states and 6151 transitions. Word has length 69 [2021-11-02 19:50:23,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:50:23,595 INFO L470 AbstractCegarLoop]: Abstraction has 5056 states and 6151 transitions. [2021-11-02 19:50:23,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 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 19:50:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 5056 states and 6151 transitions. [2021-11-02 19:50:23,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 19:50:23,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:50:23,604 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] [2021-11-02 19:50:23,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 19:50:23,605 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 19:50:23,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:50:23,606 INFO L85 PathProgramCache]: Analyzing trace with hash -606369396, now seen corresponding path program 1 times [2021-11-02 19:50:23,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:50:23,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648076719] [2021-11-02 19:50:23,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:50:23,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:50:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:50:23,869 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 19:50:23,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:50:23,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648076719] [2021-11-02 19:50:23,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648076719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:50:23,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:50:23,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:50:23,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810941538] [2021-11-02 19:50:23,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:50:23,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:50:23,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:50:23,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:50:23,872 INFO L87 Difference]: Start difference. First operand 5056 states and 6151 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 19:50:25,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:50:29,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:50:36,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:50:43,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:50:45,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:50:45,733 INFO L93 Difference]: Finished difference Result 10073 states and 12267 transitions. [2021-11-02 19:50:45,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:50:45,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2021-11-02 19:50:45,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:50:45,748 INFO L225 Difference]: With dead ends: 10073 [2021-11-02 19:50:45,748 INFO L226 Difference]: Without dead ends: 5061 [2021-11-02 19:50:45,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:50:45,758 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 6132 mSDsCounter, 0 mSdLazyCounter, 12295 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19880.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.55ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 12295 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21607.44ms IncrementalHoareTripleChecker+Time [2021-11-02 19:50:45,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 12304 Unknown, 0 Unchecked, 23.55ms Time], IncrementalHoareTripleChecker [8 Valid, 12295 Invalid, 1 Unknown, 0 Unchecked, 21607.44ms Time] [2021-11-02 19:50:45,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5061 states. [2021-11-02 19:50:45,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5061 to 5061. [2021-11-02 19:50:45,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5061 states, 5055 states have (on average 1.2178041543026705) internal successors, (6156), 5060 states have internal predecessors, (6156), 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 19:50:45,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5061 states to 5061 states and 6156 transitions. [2021-11-02 19:50:45,856 INFO L78 Accepts]: Start accepts. Automaton has 5061 states and 6156 transitions. Word has length 69 [2021-11-02 19:50:45,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:50:45,857 INFO L470 AbstractCegarLoop]: Abstraction has 5061 states and 6156 transitions. [2021-11-02 19:50:45,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 19:50:45,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5061 states and 6156 transitions. [2021-11-02 19:50:45,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 19:50:45,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:50:45,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:50:45,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 19:50:45,863 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 19:50:45,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:50:45,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1979646828, now seen corresponding path program 1 times [2021-11-02 19:50:45,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:50:45,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540915458] [2021-11-02 19:50:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:50:45,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:50:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:50:46,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 19:50:46,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:50:46,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540915458] [2021-11-02 19:50:46,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540915458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:50:46,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:50:46,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:50:46,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134507434] [2021-11-02 19:50:46,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:50:46,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:50:46,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:50:46,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:50:46,060 INFO L87 Difference]: Start difference. First operand 5061 states and 6156 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 19:50:54,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:51:05,253 WARN L515 Checker$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 19:51:08,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:51:08,226 INFO L93 Difference]: Finished difference Result 15011 states and 18286 transitions. [2021-11-02 19:51:08,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:51:08,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2021-11-02 19:51:08,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:51:08,252 INFO L225 Difference]: With dead ends: 15011 [2021-11-02 19:51:08,252 INFO L226 Difference]: Without dead ends: 10013 [2021-11-02 19:51:08,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:51:08,264 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6040 mSDsluCounter, 6130 mSDsCounter, 0 mSdLazyCounter, 12289 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19380.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6040 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.82ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12289 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21677.09ms IncrementalHoareTripleChecker+Time [2021-11-02 19:51:08,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6040 Valid, 0 Invalid, 12293 Unknown, 0 Unchecked, 20.82ms Time], IncrementalHoareTripleChecker [3 Valid, 12289 Invalid, 1 Unknown, 0 Unchecked, 21677.09ms Time] [2021-11-02 19:51:08,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10013 states. [2021-11-02 19:51:08,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10013 to 10000. [2021-11-02 19:51:08,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10000 states, 9994 states have (on average 1.2192315389233541) internal successors, (12185), 9999 states have internal predecessors, (12185), 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 19:51:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10000 states to 10000 states and 12185 transitions. [2021-11-02 19:51:08,458 INFO L78 Accepts]: Start accepts. Automaton has 10000 states and 12185 transitions. Word has length 74 [2021-11-02 19:51:08,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:51:08,460 INFO L470 AbstractCegarLoop]: Abstraction has 10000 states and 12185 transitions. [2021-11-02 19:51:08,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 19:51:08,460 INFO L276 IsEmpty]: Start isEmpty. Operand 10000 states and 12185 transitions. [2021-11-02 19:51:08,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 19:51:08,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:51:08,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:51:08,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 19:51:08,465 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 19:51:08,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:51:08,465 INFO L85 PathProgramCache]: Analyzing trace with hash 47781799, now seen corresponding path program 1 times [2021-11-02 19:51:08,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:51:08,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287958137] [2021-11-02 19:51:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:51:08,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:51:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:51:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 19:51:08,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:51:08,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287958137] [2021-11-02 19:51:08,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287958137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:51:08,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:51:08,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:51:08,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287824153] [2021-11-02 19:51:08,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:51:08,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:51:08,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:51:08,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:51:08,675 INFO L87 Difference]: Start difference. First operand 10000 states and 12185 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:51:13,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:51:17,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:51:21,270 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 19:51:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:51:30,905 INFO L93 Difference]: Finished difference Result 19934 states and 24300 transitions. [2021-11-02 19:51:30,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:51:30,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-02 19:51:30,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:51:30,949 INFO L225 Difference]: With dead ends: 19934 [2021-11-02 19:51:30,950 INFO L226 Difference]: Without dead ends: 19932 [2021-11-02 19:51:30,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:51:30,958 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6105 mSDsluCounter, 6081 mSDsCounter, 0 mSdLazyCounter, 12230 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19640.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.15ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12230 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21804.89ms IncrementalHoareTripleChecker+Time [2021-11-02 19:51:30,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6105 Valid, 0 Invalid, 12235 Unknown, 0 Unchecked, 20.15ms Time], IncrementalHoareTripleChecker [2 Valid, 12230 Invalid, 3 Unknown, 0 Unchecked, 21804.89ms Time] [2021-11-02 19:51:30,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19932 states. [2021-11-02 19:51:31,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19932 to 19894. [2021-11-02 19:51:31,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19894 states, 19888 states have (on average 1.2197304907481898) internal successors, (24258), 19893 states have internal predecessors, (24258), 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 19:51:31,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19894 states to 19894 states and 24258 transitions. [2021-11-02 19:51:31,281 INFO L78 Accepts]: Start accepts. Automaton has 19894 states and 24258 transitions. Word has length 83 [2021-11-02 19:51:31,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:51:31,282 INFO L470 AbstractCegarLoop]: Abstraction has 19894 states and 24258 transitions. [2021-11-02 19:51:31,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:51:31,282 INFO L276 IsEmpty]: Start isEmpty. Operand 19894 states and 24258 transitions. [2021-11-02 19:51:31,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 19:51:31,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:51:31,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:51:31,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 19:51:31,285 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 19:51:31,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:51:31,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1481256870, now seen corresponding path program 1 times [2021-11-02 19:51:31,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:51:31,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870541431] [2021-11-02 19:51:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:51:31,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:51:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:51:31,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 19:51:31,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:51:31,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870541431] [2021-11-02 19:51:31,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870541431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:51:31,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:51:31,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:51:31,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023804829] [2021-11-02 19:51:31,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:51:31,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:51:31,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:51:31,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:51:31,424 INFO L87 Difference]: Start difference. First operand 19894 states and 24258 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:51:36,794 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 19:51:39,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:51:44,343 WARN L515 Checker$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 19:51:53,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:51:53,956 INFO L93 Difference]: Finished difference Result 49626 states and 60534 transitions. [2021-11-02 19:51:53,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:51:53,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 19:51:53,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:51:54,016 INFO L225 Difference]: With dead ends: 49626 [2021-11-02 19:51:54,016 INFO L226 Difference]: Without dead ends: 29791 [2021-11-02 19:51:54,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:51:54,049 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6084 mSDsluCounter, 6066 mSDsCounter, 0 mSdLazyCounter, 12225 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19658.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6084 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.56ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12225 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21791.14ms IncrementalHoareTripleChecker+Time [2021-11-02 19:51:54,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6084 Valid, 0 Invalid, 12237 Unknown, 0 Unchecked, 18.56ms Time], IncrementalHoareTripleChecker [9 Valid, 12225 Invalid, 3 Unknown, 0 Unchecked, 21791.14ms Time] [2021-11-02 19:51:54,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29791 states. [2021-11-02 19:51:54,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29791 to 29757. [2021-11-02 19:51:54,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29757 states, 29751 states have (on average 1.2197573190817115) internal successors, (36289), 29756 states have internal predecessors, (36289), 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 19:51:54,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29757 states to 29757 states and 36289 transitions. [2021-11-02 19:51:54,566 INFO L78 Accepts]: Start accepts. Automaton has 29757 states and 36289 transitions. Word has length 84 [2021-11-02 19:51:54,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:51:54,568 INFO L470 AbstractCegarLoop]: Abstraction has 29757 states and 36289 transitions. [2021-11-02 19:51:54,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:51:54,568 INFO L276 IsEmpty]: Start isEmpty. Operand 29757 states and 36289 transitions. [2021-11-02 19:51:54,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-02 19:51:54,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:51:54,582 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:54,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 19:51:54,583 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 19:51:54,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:51:54,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1239202085, now seen corresponding path program 1 times [2021-11-02 19:51:54,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:51:54,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570621123] [2021-11-02 19:51:54,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:51:54,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:51:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:51:54,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 19:51:54,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:51:54,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570621123] [2021-11-02 19:51:54,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570621123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:51:54,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:51:54,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:51:54,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454552837] [2021-11-02 19:51:54,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:51:54,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:51:54,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:51:54,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:51:54,706 INFO L87 Difference]: Start difference. First operand 29757 states and 36289 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 19:52:01,901 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:52:08,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:52:13,130 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 19:52:17,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:52:17,346 INFO L93 Difference]: Finished difference Result 75664 states and 92607 transitions. [2021-11-02 19:52:17,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:52:17,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 168 [2021-11-02 19:52:17,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:52:17,443 INFO L225 Difference]: With dead ends: 75664 [2021-11-02 19:52:17,444 INFO L226 Difference]: Without dead ends: 45970 [2021-11-02 19:52:17,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:52:17,499 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3425 mSDsluCounter, 6025 mSDsCounter, 0 mSdLazyCounter, 12242 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19929.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3425 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.87ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12242 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21858.83ms IncrementalHoareTripleChecker+Time [2021-11-02 19:52:17,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3425 Valid, 0 Invalid, 12245 Unknown, 0 Unchecked, 13.87ms Time], IncrementalHoareTripleChecker [2 Valid, 12242 Invalid, 1 Unknown, 0 Unchecked, 21858.83ms Time] [2021-11-02 19:52:17,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45970 states. [2021-11-02 19:52:18,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45970 to 45956. [2021-11-02 19:52:18,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45956 states, 45950 states have (on average 1.2267247007616975) internal successors, (56368), 45955 states have internal predecessors, (56368), 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 19:52:18,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45956 states to 45956 states and 56368 transitions. [2021-11-02 19:52:18,540 INFO L78 Accepts]: Start accepts. Automaton has 45956 states and 56368 transitions. Word has length 168 [2021-11-02 19:52:18,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:52:18,541 INFO L470 AbstractCegarLoop]: Abstraction has 45956 states and 56368 transitions. [2021-11-02 19:52:18,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 19:52:18,541 INFO L276 IsEmpty]: Start isEmpty. Operand 45956 states and 56368 transitions. [2021-11-02 19:52:18,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-02 19:52:18,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:52:18,558 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:18,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 19:52:18,559 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 19:52:18,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:52:18,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2103082099, now seen corresponding path program 1 times [2021-11-02 19:52:18,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:52:18,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063216684] [2021-11-02 19:52:18,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:52:18,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:52:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:52:18,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 19:52:18,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:52:18,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063216684] [2021-11-02 19:52:18,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063216684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:52:18,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:52:18,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:52:18,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924665497] [2021-11-02 19:52:18,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:52:18,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:52:18,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:52:18,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:52:18,699 INFO L87 Difference]: Start difference. First operand 45956 states and 56368 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 19:52:36,118 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 19:52:38,683 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 19:52:42,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:52:42,409 INFO L93 Difference]: Finished difference Result 119021 states and 145886 transitions. [2021-11-02 19:52:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:52:42,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 168 [2021-11-02 19:52:42,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:52:42,547 INFO L225 Difference]: With dead ends: 119021 [2021-11-02 19:52:42,548 INFO L226 Difference]: Without dead ends: 73128 [2021-11-02 19:52:42,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:52:42,629 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4214 mSDsluCounter, 5982 mSDsCounter, 0 mSdLazyCounter, 12226 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20322.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4214 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.16ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12226 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22294.53ms IncrementalHoareTripleChecker+Time [2021-11-02 19:52:42,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4214 Valid, 0 Invalid, 12235 Unknown, 0 Unchecked, 14.16ms Time], IncrementalHoareTripleChecker [7 Valid, 12226 Invalid, 2 Unknown, 0 Unchecked, 22294.53ms Time] [2021-11-02 19:52:42,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73128 states. [2021-11-02 19:52:44,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73128 to 68200. [2021-11-02 19:52:44,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68200 states, 68194 states have (on average 1.230753438718949) internal successors, (83930), 68199 states have internal predecessors, (83930), 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 19:52:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68200 states to 68200 states and 83930 transitions. [2021-11-02 19:52:44,205 INFO L78 Accepts]: Start accepts. Automaton has 68200 states and 83930 transitions. Word has length 168 [2021-11-02 19:52:44,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:52:44,205 INFO L470 AbstractCegarLoop]: Abstraction has 68200 states and 83930 transitions. [2021-11-02 19:52:44,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 19:52:44,205 INFO L276 IsEmpty]: Start isEmpty. Operand 68200 states and 83930 transitions. [2021-11-02 19:52:44,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-02 19:52:44,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:52:44,217 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:44,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 19:52:44,218 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 19:52:44,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:52:44,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1701306590, now seen corresponding path program 1 times [2021-11-02 19:52:44,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:52:44,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692688841] [2021-11-02 19:52:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:52:44,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:52:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:52:44,379 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 19:52:44,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:52:44,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692688841] [2021-11-02 19:52:44,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692688841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:52:44,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:52:44,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:52:44,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457783876] [2021-11-02 19:52:44,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:52:44,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:52:44,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:52:44,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:52:44,382 INFO L87 Difference]: Start difference. First operand 68200 states and 83930 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 19:52:52,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:52:56,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:53:07,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:53:10,034 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:53:12,307 WARN L515 Checker$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 19:53:13,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:53:13,813 INFO L93 Difference]: Finished difference Result 157440 states and 194598 transitions. [2021-11-02 19:53:13,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:53:13,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 206 [2021-11-02 19:53:13,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:53:13,973 INFO L225 Difference]: With dead ends: 157440 [2021-11-02 19:53:13,973 INFO L226 Difference]: Without dead ends: 89303 [2021-11-02 19:53:14,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:53:14,050 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3424 mSDsluCounter, 6055 mSDsCounter, 0 mSdLazyCounter, 15634 mSolverCounterSat, 22 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25130.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3424 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.35ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 15634 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27590.21ms IncrementalHoareTripleChecker+Time [2021-11-02 19:53:14,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3424 Valid, 0 Invalid, 15658 Unknown, 0 Unchecked, 16.35ms Time], IncrementalHoareTripleChecker [22 Valid, 15634 Invalid, 2 Unknown, 0 Unchecked, 27590.21ms Time] [2021-11-02 19:53:14,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89303 states. [2021-11-02 19:53:15,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89303 to 89279. [2021-11-02 19:53:15,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89279 states, 89273 states have (on average 1.2373281955350441) internal successors, (110460), 89278 states have internal predecessors, (110460), 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 19:53:15,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89279 states to 89279 states and 110460 transitions. [2021-11-02 19:53:15,901 INFO L78 Accepts]: Start accepts. Automaton has 89279 states and 110460 transitions. Word has length 206 [2021-11-02 19:53:15,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:53:15,901 INFO L470 AbstractCegarLoop]: Abstraction has 89279 states and 110460 transitions. [2021-11-02 19:53:15,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 19:53:15,904 INFO L276 IsEmpty]: Start isEmpty. Operand 89279 states and 110460 transitions. [2021-11-02 19:53:15,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-02 19:53:15,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:53:15,945 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:53:15,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 19:53:15,945 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 19:53:15,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:53:15,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1273457992, now seen corresponding path program 1 times [2021-11-02 19:53:15,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:53:15,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14910296] [2021-11-02 19:53:15,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:53:15,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:53:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:53:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 19:53:16,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:53:16,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14910296] [2021-11-02 19:53:16,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14910296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:53:16,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:53:16,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:53:16,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233836293] [2021-11-02 19:53:16,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:53:16,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:53:16,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:53:16,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:53:16,093 INFO L87 Difference]: Start difference. First operand 89279 states and 110460 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 19:53:17,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:53:26,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:53:27,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:53:37,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:53:40,304 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 19:53:45,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:53:45,596 INFO L93 Difference]: Finished difference Result 199598 states and 247658 transitions. [2021-11-02 19:53:45,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:53:45,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 229 [2021-11-02 19:53:45,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:53:45,952 INFO L225 Difference]: With dead ends: 199598 [2021-11-02 19:53:45,952 INFO L226 Difference]: Without dead ends: 110382 [2021-11-02 19:53:46,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:53:46,057 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5325 mSDsluCounter, 4183 mSDsCounter, 0 mSdLazyCounter, 13823 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24910.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5325 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.47ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 13823 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27244.13ms IncrementalHoareTripleChecker+Time [2021-11-02 19:53:46,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5325 Valid, 0 Invalid, 13847 Unknown, 0 Unchecked, 15.47ms Time], IncrementalHoareTripleChecker [23 Valid, 13823 Invalid, 1 Unknown, 0 Unchecked, 27244.13ms Time] [2021-11-02 19:53:46,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110382 states. [2021-11-02 19:53:48,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110382 to 110358. [2021-11-02 19:53:48,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110358 states, 110352 states have (on average 1.2413911845730028) internal successors, (136990), 110357 states have internal predecessors, (136990), 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 19:53:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110358 states to 110358 states and 136990 transitions. [2021-11-02 19:53:48,634 INFO L78 Accepts]: Start accepts. Automaton has 110358 states and 136990 transitions. Word has length 229 [2021-11-02 19:53:48,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:53:48,634 INFO L470 AbstractCegarLoop]: Abstraction has 110358 states and 136990 transitions. [2021-11-02 19:53:48,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 19:53:48,635 INFO L276 IsEmpty]: Start isEmpty. Operand 110358 states and 136990 transitions. [2021-11-02 19:53:48,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-02 19:53:48,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:53:48,669 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:53:48,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 19:53:48,669 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 19:53:48,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:53:48,670 INFO L85 PathProgramCache]: Analyzing trace with hash 281472665, now seen corresponding path program 1 times [2021-11-02 19:53:48,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:53:48,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126173198] [2021-11-02 19:53:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:53:48,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:53:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:53:48,930 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-02 19:53:48,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:53:48,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126173198] [2021-11-02 19:53:48,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126173198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:53:48,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:53:48,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:53:48,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991215226] [2021-11-02 19:53:48,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:53:48,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:53:48,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:53:48,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:53:48,932 INFO L87 Difference]: Start difference. First operand 110358 states and 136990 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 19:53:53,998 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 19:54:02,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:54:04,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:54:05,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:54:16,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:54:21,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:54:21,290 INFO L93 Difference]: Finished difference Result 329856 states and 409742 transitions. [2021-11-02 19:54:21,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:54:21,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 307 [2021-11-02 19:54:21,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:54:21,920 INFO L225 Difference]: With dead ends: 329856 [2021-11-02 19:54:21,920 INFO L226 Difference]: Without dead ends: 219561 [2021-11-02 19:54:22,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:54:22,084 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5800 mSDsluCounter, 5815 mSDsCounter, 0 mSdLazyCounter, 14617 mSolverCounterSat, 142 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25911.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5800 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.83ms SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 14617 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28268.05ms IncrementalHoareTripleChecker+Time [2021-11-02 19:54:22,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5800 Valid, 0 Invalid, 14761 Unknown, 0 Unchecked, 17.83ms Time], IncrementalHoareTripleChecker [142 Valid, 14617 Invalid, 2 Unknown, 0 Unchecked, 28268.05ms Time] [2021-11-02 19:54:22,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219561 states. [2021-11-02 19:54:25,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219561 to 118002. [2021-11-02 19:54:25,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118002 states, 117996 states have (on average 1.2350079663717415) internal successors, (145726), 118001 states have internal predecessors, (145726), 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 19:54:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118002 states to 118002 states and 145726 transitions. [2021-11-02 19:54:26,040 INFO L78 Accepts]: Start accepts. Automaton has 118002 states and 145726 transitions. Word has length 307 [2021-11-02 19:54:26,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:54:26,040 INFO L470 AbstractCegarLoop]: Abstraction has 118002 states and 145726 transitions. [2021-11-02 19:54:26,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 19:54:26,041 INFO L276 IsEmpty]: Start isEmpty. Operand 118002 states and 145726 transitions. [2021-11-02 19:54:26,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-11-02 19:54:26,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:54:26,068 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:26,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 19:54:26,069 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 19:54:26,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:54:26,069 INFO L85 PathProgramCache]: Analyzing trace with hash -630999289, now seen corresponding path program 1 times [2021-11-02 19:54:26,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:54:26,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550906080] [2021-11-02 19:54:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:54:26,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:54:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:54:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-02 19:54:26,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:54:26,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550906080] [2021-11-02 19:54:26,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550906080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:54:26,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:54:26,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:54:26,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234334053] [2021-11-02 19:54:26,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:54:26,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:54:26,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:54:26,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:54:26,526 INFO L87 Difference]: Start difference. First operand 118002 states and 145726 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 19:54:30,325 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:54:39,654 WARN L515 Checker$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 19:54:50,268 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 19:54:54,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:54:54,717 INFO L93 Difference]: Finished difference Result 344724 states and 427286 transitions. [2021-11-02 19:54:54,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:54:54,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 319 [2021-11-02 19:54:54,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:54:55,335 INFO L225 Difference]: With dead ends: 344724 [2021-11-02 19:54:55,335 INFO L226 Difference]: Without dead ends: 226785 [2021-11-02 19:54:55,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:54:55,535 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5486 mSDsluCounter, 5848 mSDsCounter, 0 mSdLazyCounter, 14287 mSolverCounterSat, 127 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20751.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5486 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.77ms SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 14287 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22924.25ms IncrementalHoareTripleChecker+Time [2021-11-02 19:54:55,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5486 Valid, 0 Invalid, 14417 Unknown, 0 Unchecked, 35.77ms Time], IncrementalHoareTripleChecker [127 Valid, 14287 Invalid, 3 Unknown, 0 Unchecked, 22924.25ms Time] [2021-11-02 19:54:55,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226785 states. [2021-11-02 19:54:59,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226785 to 124302. [2021-11-02 19:54:59,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124302 states, 124296 states have (on average 1.2303372594451953) internal successors, (152926), 124301 states have internal predecessors, (152926), 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 19:55:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124302 states to 124302 states and 152926 transitions. [2021-11-02 19:55:00,179 INFO L78 Accepts]: Start accepts. Automaton has 124302 states and 152926 transitions. Word has length 319 [2021-11-02 19:55:00,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:55:00,181 INFO L470 AbstractCegarLoop]: Abstraction has 124302 states and 152926 transitions. [2021-11-02 19:55:00,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 19:55:00,182 INFO L276 IsEmpty]: Start isEmpty. Operand 124302 states and 152926 transitions. [2021-11-02 19:55:00,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-11-02 19:55:00,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:55:00,205 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:00,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 19:55:00,205 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 19:55:00,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:55:00,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1366218259, now seen corresponding path program 1 times [2021-11-02 19:55:00,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:55:00,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335746521] [2021-11-02 19:55:00,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:55:00,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:55:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:55:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-02 19:55:00,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:55:00,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335746521] [2021-11-02 19:55:00,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335746521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:55:00,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:55:00,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:55:00,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394623454] [2021-11-02 19:55:00,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:55:00,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:55:00,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:55:00,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:55:00,665 INFO L87 Difference]: Start difference. First operand 124302 states and 152926 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 19:55:01,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:55:12,372 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:55:14,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:55:21,890 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:55:29,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:55:29,738 INFO L93 Difference]: Finished difference Result 272122 states and 335422 transitions. [2021-11-02 19:55:29,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:55:29,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 329 [2021-11-02 19:55:29,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:55:30,032 INFO L225 Difference]: With dead ends: 272122 [2021-11-02 19:55:30,032 INFO L226 Difference]: Without dead ends: 147883 [2021-11-02 19:55:30,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:55:30,183 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3428 mSDsluCounter, 6082 mSDsCounter, 0 mSdLazyCounter, 15727 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22515.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3428 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.35ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 15727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24794.53ms IncrementalHoareTripleChecker+Time [2021-11-02 19:55:30,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3428 Valid, 0 Invalid, 15749 Unknown, 0 Unchecked, 17.35ms Time], IncrementalHoareTripleChecker [22 Valid, 15727 Invalid, 0 Unknown, 0 Unchecked, 24794.53ms Time] [2021-11-02 19:55:30,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147883 states. [2021-11-02 19:55:34,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147883 to 147869. [2021-11-02 19:55:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147869 states, 147863 states have (on average 1.2328980204648898) internal successors, (182300), 147868 states have internal predecessors, (182300), 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 19:55:34,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147869 states to 147869 states and 182300 transitions. [2021-11-02 19:55:34,741 INFO L78 Accepts]: Start accepts. Automaton has 147869 states and 182300 transitions. Word has length 329 [2021-11-02 19:55:34,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:55:34,741 INFO L470 AbstractCegarLoop]: Abstraction has 147869 states and 182300 transitions. [2021-11-02 19:55:34,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 19:55:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 147869 states and 182300 transitions. [2021-11-02 19:55:34,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-11-02 19:55:34,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:55:34,762 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:34,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 19:55:34,763 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 19:55:34,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:55:34,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1645558578, now seen corresponding path program 1 times [2021-11-02 19:55:34,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:55:34,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574024217] [2021-11-02 19:55:34,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:55:34,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:55:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:55:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-02 19:55:34,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:55:34,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574024217] [2021-11-02 19:55:34,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574024217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:55:34,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:55:34,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:55:34,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038515247] [2021-11-02 19:55:34,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:55:34,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:55:34,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:55:34,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:55:34,925 INFO L87 Difference]: Start difference. First operand 147869 states and 182300 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 19:55:45,046 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 19:55:48,098 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 []