./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 20:59:40,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 20:59:40,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 20:59:40,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 20:59:40,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 20:59:40,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 20:59:40,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 20:59:40,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 20:59:40,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 20:59:40,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 20:59:40,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 20:59:40,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 20:59:40,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 20:59:40,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 20:59:40,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 20:59:40,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 20:59:40,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 20:59:40,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 20:59:40,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 20:59:40,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 20:59:40,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 20:59:40,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 20:59:40,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 20:59:40,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 20:59:40,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 20:59:40,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 20:59:40,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 20:59:40,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 20:59:40,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 20:59:40,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 20:59:40,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 20:59:40,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 20:59:40,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 20:59:40,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 20:59:40,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 20:59:40,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 20:59:40,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 20:59:40,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 20:59:40,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 20:59:40,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 20:59:40,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 20:59:40,152 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 20:59:40,173 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 20:59:40,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 20:59:40,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 20:59:40,174 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 20:59:40,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 20:59:40,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 20:59:40,175 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 20:59:40,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 20:59:40,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 20:59:40,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 20:59:40,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 20:59:40,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 20:59:40,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 20:59:40,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 20:59:40,177 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 20:59:40,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 20:59:40,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 20:59:40,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 20:59:40,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 20:59:40,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:59:40,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 20:59:40,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 20:59:40,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 20:59:40,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 20:59:40,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 20:59:40,179 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 20:59:40,179 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 20:59:40,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 20:59:40,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 20:59:40,179 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 [2021-11-02 20:59:40,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 20:59:40,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 20:59:40,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 20:59:40,387 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 20:59:40,387 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 20:59:40,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2021-11-02 20:59:40,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a525869/6b55915a0ee54e0f89d726a90e2ab6f3/FLAGfcdd5d190 [2021-11-02 20:59:41,076 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 20:59:41,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2021-11-02 20:59:41,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a525869/6b55915a0ee54e0f89d726a90e2ab6f3/FLAGfcdd5d190 [2021-11-02 20:59:41,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a525869/6b55915a0ee54e0f89d726a90e2ab6f3 [2021-11-02 20:59:41,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 20:59:41,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 20:59:41,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 20:59:41,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 20:59:41,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 20:59:41,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:41" (1/1) ... [2021-11-02 20:59:41,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3dc4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:41, skipping insertion in model container [2021-11-02 20:59:41,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:41" (1/1) ... [2021-11-02 20:59:41,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 20:59:41,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 20:59:42,333 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2021-11-02 20:59:42,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:59:42,461 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 20:59:42,627 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2021-11-02 20:59:42,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:59:42,780 INFO L208 MainTranslator]: Completed translation [2021-11-02 20:59:42,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:42 WrapperNode [2021-11-02 20:59:42,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 20:59:42,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 20:59:42,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 20:59:42,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 20:59:42,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:42" (1/1) ... [2021-11-02 20:59:42,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:42" (1/1) ... [2021-11-02 20:59:43,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 20:59:43,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 20:59:43,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 20:59:43,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 20:59:43,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:42" (1/1) ... [2021-11-02 20:59:43,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:42" (1/1) ... [2021-11-02 20:59:43,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:42" (1/1) ... [2021-11-02 20:59:43,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:42" (1/1) ... [2021-11-02 20:59:43,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:42" (1/1) ... [2021-11-02 20:59:43,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:42" (1/1) ... [2021-11-02 20:59:43,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:42" (1/1) ... [2021-11-02 20:59:43,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 20:59:43,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 20:59:43,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 20:59:43,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 20:59:43,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:42" (1/1) ... [2021-11-02 20:59:43,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:59:43,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:59:43,663 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 20:59:43,725 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 20:59:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 20:59:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 20:59:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 20:59:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 20:59:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 20:59:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 20:59:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 20:59:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 20:59:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-02 20:59:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 20:59:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 20:59:43,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 21:00:34,270 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 21:00:34,271 INFO L299 CfgBuilder]: Removed 1329 assume(true) statements. [2021-11-02 21:00:34,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:34 BoogieIcfgContainer [2021-11-02 21:00:34,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 21:00:34,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 21:00:34,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 21:00:34,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 21:00:34,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:59:41" (1/3) ... [2021-11-02 21:00:34,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5b0cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:34, skipping insertion in model container [2021-11-02 21:00:34,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:42" (2/3) ... [2021-11-02 21:00:34,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5b0cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:34, skipping insertion in model container [2021-11-02 21:00:34,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:34" (3/3) ... [2021-11-02 21:00:34,284 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2021-11-02 21:00:34,288 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 21:00:34,288 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-02 21:00:34,342 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 21:00:34,350 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 21:00:34,350 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-02 21:00:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 1424 states, 1412 states have (on average 1.4121813031161472) internal successors, (1994), 1423 states have internal predecessors, (1994), 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 21:00:34,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-02 21:00:34,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:00:34,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:00:34,403 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 21:00:34,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:00:34,408 INFO L85 PathProgramCache]: Analyzing trace with hash 754127617, now seen corresponding path program 1 times [2021-11-02 21:00:34,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:00:34,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72711784] [2021-11-02 21:00:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:00:34,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:00:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:00:35,621 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 21:00:35,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:00:35,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72711784] [2021-11-02 21:00:35,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72711784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:00:35,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:00:35,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:00:35,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846889955] [2021-11-02 21:00:35,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:00:35,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:00:35,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:00:35,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:00:35,648 INFO L87 Difference]: Start difference. First operand has 1424 states, 1412 states have (on average 1.4121813031161472) internal successors, (1994), 1423 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 21:00:37,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:00:39,117 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 21:00:50,074 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 21:01:10,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:01:10,832 INFO L93 Difference]: Finished difference Result 4138 states and 5781 transitions. [2021-11-02 21:01:10,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:01:10,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2021-11-02 21:01:10,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:01:10,861 INFO L225 Difference]: With dead ends: 4138 [2021-11-02 21:01:10,862 INFO L226 Difference]: Without dead ends: 2702 [2021-11-02 21:01:10,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:01:10,868 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 1771 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 3924 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31538.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1771 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 3927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.91ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3924 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34485.14ms IncrementalHoareTripleChecker+Time [2021-11-02 21:01:10,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1771 Valid, 8 Invalid, 3927 Unknown, 0 Unchecked, 60.91ms Time], IncrementalHoareTripleChecker [1 Valid, 3924 Invalid, 2 Unknown, 0 Unchecked, 34485.14ms Time] [2021-11-02 21:01:10,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2021-11-02 21:01:10,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 2685. [2021-11-02 21:01:10,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2685 states, 2674 states have (on average 1.387434554973822) internal successors, (3710), 2684 states have internal predecessors, (3710), 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 21:01:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2685 states to 2685 states and 3710 transitions. [2021-11-02 21:01:10,991 INFO L78 Accepts]: Start accepts. Automaton has 2685 states and 3710 transitions. Word has length 13 [2021-11-02 21:01:10,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:01:10,991 INFO L470 AbstractCegarLoop]: Abstraction has 2685 states and 3710 transitions. [2021-11-02 21:01:10,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 21:01:10,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2685 states and 3710 transitions. [2021-11-02 21:01:10,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-02 21:01:10,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:01:10,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:01:10,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 21:01:10,995 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 21:01:10,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:01:10,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1936008622, now seen corresponding path program 1 times [2021-11-02 21:01:10,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:01:10,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581706652] [2021-11-02 21:01:10,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:01:10,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:01:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:01:11,712 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 21:01:11,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:01:11,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581706652] [2021-11-02 21:01:11,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581706652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:01:11,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:01:11,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:01:11,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357540835] [2021-11-02 21:01:11,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:01:11,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:01:11,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:01:11,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:01:11,715 INFO L87 Difference]: Start difference. First operand 2685 states and 3710 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 21:01:14,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:01:25,934 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 21:01:50,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:01:50,347 INFO L93 Difference]: Finished difference Result 7863 states and 10887 transitions. [2021-11-02 21:01:50,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:01:50,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-11-02 21:01:50,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:01:50,366 INFO L225 Difference]: With dead ends: 7863 [2021-11-02 21:01:50,366 INFO L226 Difference]: Without dead ends: 5181 [2021-11-02 21:01:50,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:01:50,374 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1928 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 3982 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35609.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.21ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3982 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38175.70ms IncrementalHoareTripleChecker+Time [2021-11-02 21:01:50,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1928 Valid, 0 Invalid, 3987 Unknown, 0 Unchecked, 48.21ms Time], IncrementalHoareTripleChecker [3 Valid, 3982 Invalid, 2 Unknown, 0 Unchecked, 38175.70ms Time] [2021-11-02 21:01:50,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5181 states. [2021-11-02 21:01:50,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5181 to 5164. [2021-11-02 21:01:50,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5164 states, 5153 states have (on average 1.3904521637880847) internal successors, (7165), 5163 states have internal predecessors, (7165), 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 21:01:50,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5164 states to 5164 states and 7165 transitions. [2021-11-02 21:01:50,490 INFO L78 Accepts]: Start accepts. Automaton has 5164 states and 7165 transitions. Word has length 14 [2021-11-02 21:01:50,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:01:50,490 INFO L470 AbstractCegarLoop]: Abstraction has 5164 states and 7165 transitions. [2021-11-02 21:01:50,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 21:01:50,491 INFO L276 IsEmpty]: Start isEmpty. Operand 5164 states and 7165 transitions. [2021-11-02 21:01:50,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 21:01:50,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:01:50,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:01:50,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 21:01:50,495 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 21:01:50,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:01:50,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1032247073, now seen corresponding path program 1 times [2021-11-02 21:01:50,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:01:50,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218933012] [2021-11-02 21:01:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:01:50,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:01:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:01:51,519 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 21:01:51,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:01:51,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218933012] [2021-11-02 21:01:51,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218933012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:01:51,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:01:51,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 21:01:51,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623184904] [2021-11-02 21:01:51,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 21:01:51,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:01:51,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 21:01:51,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 21:01:51,521 INFO L87 Difference]: Start difference. First operand 5164 states and 7165 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:01:53,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:02:34,610 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 21:04:39,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:04:39,397 INFO L93 Difference]: Finished difference Result 25658 states and 35613 transitions. [2021-11-02 21:04:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 21:04:39,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-02 21:04:39,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:04:39,470 INFO L225 Difference]: With dead ends: 25658 [2021-11-02 21:04:39,471 INFO L226 Difference]: Without dead ends: 20497 [2021-11-02 21:04:39,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 419.67ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-02 21:04:39,491 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7687 mSDsluCounter, 15337 mSDsCounter, 0 mSdLazyCounter, 19242 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 156861.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7687 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 192.24ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19242 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 166249.64ms IncrementalHoareTripleChecker+Time [2021-11-02 21:04:39,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7687 Valid, 0 Invalid, 19250 Unknown, 0 Unchecked, 192.24ms Time], IncrementalHoareTripleChecker [6 Valid, 19242 Invalid, 2 Unknown, 0 Unchecked, 166249.64ms Time] [2021-11-02 21:04:39,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20497 states. [2021-11-02 21:04:39,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20497 to 5214. [2021-11-02 21:04:39,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 5203 states have (on average 1.3886219488756486) internal successors, (7225), 5213 states have internal predecessors, (7225), 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 21:04:39,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 7225 transitions. [2021-11-02 21:04:39,715 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 7225 transitions. Word has length 22 [2021-11-02 21:04:39,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:04:39,715 INFO L470 AbstractCegarLoop]: Abstraction has 5214 states and 7225 transitions. [2021-11-02 21:04:39,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:04:39,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 7225 transitions. [2021-11-02 21:04:39,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 21:04:39,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:04:39,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:04:39,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 21:04:39,720 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 21:04:39,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:04:39,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1290412511, now seen corresponding path program 1 times [2021-11-02 21:04:39,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:04:39,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756343877] [2021-11-02 21:04:39,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:04:39,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:04:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:04:40,450 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 21:04:40,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:04:40,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756343877] [2021-11-02 21:04:40,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756343877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:04:40,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:04:40,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:04:40,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793770915] [2021-11-02 21:04:40,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:04:40,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:04:40,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:04:40,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:04:40,451 INFO L87 Difference]: Start difference. First operand 5214 states and 7225 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:04:42,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:04:52,152 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 21:05:20,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:05:20,735 INFO L93 Difference]: Finished difference Result 10419 states and 14442 transitions. [2021-11-02 21:05:20,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:05:20,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-02 21:05:20,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:05:20,755 INFO L225 Difference]: With dead ends: 10419 [2021-11-02 21:05:20,755 INFO L226 Difference]: Without dead ends: 10417 [2021-11-02 21:05:20,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:05:20,763 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1934 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 3902 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36239.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1934 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.21ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3902 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39798.13ms IncrementalHoareTripleChecker+Time [2021-11-02 21:05:20,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1934 Valid, 0 Invalid, 3905 Unknown, 0 Unchecked, 24.21ms Time], IncrementalHoareTripleChecker [1 Valid, 3902 Invalid, 2 Unknown, 0 Unchecked, 39798.13ms Time] [2021-11-02 21:05:20,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10417 states. [2021-11-02 21:05:20,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10417 to 10400. [2021-11-02 21:05:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10400 states, 10389 states have (on average 1.3890653575897585) internal successors, (14431), 10399 states have internal predecessors, (14431), 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 21:05:21,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10400 states to 10400 states and 14431 transitions. [2021-11-02 21:05:21,064 INFO L78 Accepts]: Start accepts. Automaton has 10400 states and 14431 transitions. Word has length 22 [2021-11-02 21:05:21,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:05:21,065 INFO L470 AbstractCegarLoop]: Abstraction has 10400 states and 14431 transitions. [2021-11-02 21:05:21,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:05:21,065 INFO L276 IsEmpty]: Start isEmpty. Operand 10400 states and 14431 transitions. [2021-11-02 21:05:21,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-02 21:05:21,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:05:21,068 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] [2021-11-02 21:05:21,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 21:05:21,068 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 21:05:21,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:05:21,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1348092953, now seen corresponding path program 1 times [2021-11-02 21:05:21,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:05:21,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685628546] [2021-11-02 21:05:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:05:21,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:05:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:05:21,693 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 21:05:21,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:05:21,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685628546] [2021-11-02 21:05:21,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685628546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:05:21,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:05:21,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:05:21,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353125413] [2021-11-02 21:05:21,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:05:21,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:05:21,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:05:21,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:05:21,694 INFO L87 Difference]: Start difference. First operand 10400 states and 14431 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 21:05:23,983 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:05:32,892 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 21:06:02,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:06:02,778 INFO L93 Difference]: Finished difference Result 10420 states and 14443 transitions. [2021-11-02 21:06:02,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:06:02,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2021-11-02 21:06:02,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:06:02,801 INFO L225 Difference]: With dead ends: 10420 [2021-11-02 21:06:02,801 INFO L226 Difference]: Without dead ends: 10418 [2021-11-02 21:06:02,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:06:02,807 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1931 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 3905 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36798.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3905 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40562.48ms IncrementalHoareTripleChecker+Time [2021-11-02 21:06:02,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1931 Valid, 0 Invalid, 3908 Unknown, 0 Unchecked, 25.57ms Time], IncrementalHoareTripleChecker [1 Valid, 3905 Invalid, 2 Unknown, 0 Unchecked, 40562.48ms Time] [2021-11-02 21:06:02,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10418 states. [2021-11-02 21:06:02,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10418 to 10401. [2021-11-02 21:06:02,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10401 states, 10390 states have (on average 1.3890279114533206) internal successors, (14432), 10400 states have internal predecessors, (14432), 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 21:06:03,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10401 states to 10401 states and 14432 transitions. [2021-11-02 21:06:03,002 INFO L78 Accepts]: Start accepts. Automaton has 10401 states and 14432 transitions. Word has length 23 [2021-11-02 21:06:03,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:06:03,002 INFO L470 AbstractCegarLoop]: Abstraction has 10401 states and 14432 transitions. [2021-11-02 21:06:03,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 21:06:03,003 INFO L276 IsEmpty]: Start isEmpty. Operand 10401 states and 14432 transitions. [2021-11-02 21:06:03,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 21:06:03,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:06:03,003 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] [2021-11-02 21:06:03,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 21:06:03,004 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 21:06:03,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:06:03,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1158780631, now seen corresponding path program 1 times [2021-11-02 21:06:03,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:06:03,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513718739] [2021-11-02 21:06:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:06:03,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:06:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:06:03,658 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 21:06:03,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:06:03,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513718739] [2021-11-02 21:06:03,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513718739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:06:03,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:06:03,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:06:03,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227760163] [2021-11-02 21:06:03,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:06:03,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:06:03,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:06:03,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:06:03,659 INFO L87 Difference]: Start difference. First operand 10401 states and 14432 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 21:06:05,873 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:06:16,987 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 21:06:42,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:06:42,505 INFO L93 Difference]: Finished difference Result 23645 states and 32818 transitions. [2021-11-02 21:06:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:06:42,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2021-11-02 21:06:42,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:06:42,525 INFO L225 Difference]: With dead ends: 23645 [2021-11-02 21:06:42,525 INFO L226 Difference]: Without dead ends: 13241 [2021-11-02 21:06:42,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:06:42,541 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 658 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 3873 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35449.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.49ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3873 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38341.62ms IncrementalHoareTripleChecker+Time [2021-11-02 21:06:42,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 0 Invalid, 3890 Unknown, 0 Unchecked, 21.49ms Time], IncrementalHoareTripleChecker [15 Valid, 3873 Invalid, 2 Unknown, 0 Unchecked, 38341.62ms Time] [2021-11-02 21:06:42,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13241 states. [2021-11-02 21:06:42,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13241 to 13212. [2021-11-02 21:06:42,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13212 states, 13201 states have (on average 1.3879251571850617) internal successors, (18322), 13211 states have internal predecessors, (18322), 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 21:06:42,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13212 states to 13212 states and 18322 transitions. [2021-11-02 21:06:42,786 INFO L78 Accepts]: Start accepts. Automaton has 13212 states and 18322 transitions. Word has length 24 [2021-11-02 21:06:42,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:06:42,786 INFO L470 AbstractCegarLoop]: Abstraction has 13212 states and 18322 transitions. [2021-11-02 21:06:42,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 21:06:42,786 INFO L276 IsEmpty]: Start isEmpty. Operand 13212 states and 18322 transitions. [2021-11-02 21:06:42,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-02 21:06:42,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:06:42,787 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 21:06:42,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 21:06:42,788 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 21:06:42,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:06:42,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1100373169, now seen corresponding path program 1 times [2021-11-02 21:06:42,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:06:42,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705365750] [2021-11-02 21:06:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:06:42,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:06:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:06:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 21:06:43,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:06:43,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705365750] [2021-11-02 21:06:43,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705365750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:06:43,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:06:43,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:06:43,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241660714] [2021-11-02 21:06:43,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:06:43,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:06:43,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:06:43,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:06:43,425 INFO L87 Difference]: Start difference. First operand 13212 states and 18322 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 21:06:45,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:07:01,235 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 21:07:42,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:07:42,365 INFO L93 Difference]: Finished difference Result 32972 states and 45832 transitions. [2021-11-02 21:07:42,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:07:42,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 35 [2021-11-02 21:07:42,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:07:42,403 INFO L225 Difference]: With dead ends: 32972 [2021-11-02 21:07:42,403 INFO L226 Difference]: Without dead ends: 19763 [2021-11-02 21:07:42,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:07:42,423 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1823 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 5664 mSolverCounterSat, 22 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52899.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.35ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 5664 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58279.74ms IncrementalHoareTripleChecker+Time [2021-11-02 21:07:42,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1823 Valid, 0 Invalid, 5688 Unknown, 0 Unchecked, 30.35ms Time], IncrementalHoareTripleChecker [22 Valid, 5664 Invalid, 2 Unknown, 0 Unchecked, 58279.74ms Time] [2021-11-02 21:07:42,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19763 states. [2021-11-02 21:07:42,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19763 to 19736. [2021-11-02 21:07:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19736 states, 19725 states have (on average 1.385044359949303) internal successors, (27320), 19735 states have internal predecessors, (27320), 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 21:07:42,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19736 states to 19736 states and 27320 transitions. [2021-11-02 21:07:42,845 INFO L78 Accepts]: Start accepts. Automaton has 19736 states and 27320 transitions. Word has length 35 [2021-11-02 21:07:42,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:07:42,846 INFO L470 AbstractCegarLoop]: Abstraction has 19736 states and 27320 transitions. [2021-11-02 21:07:42,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 21:07:42,846 INFO L276 IsEmpty]: Start isEmpty. Operand 19736 states and 27320 transitions. [2021-11-02 21:07:42,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-02 21:07:42,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:07:42,850 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] [2021-11-02 21:07:42,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 21:07:42,851 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 21:07:42,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:07:42,852 INFO L85 PathProgramCache]: Analyzing trace with hash 491641491, now seen corresponding path program 1 times [2021-11-02 21:07:42,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:07:42,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934102392] [2021-11-02 21:07:42,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:07:42,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:07:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:07:43,549 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 21:07:43,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:07:43,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934102392] [2021-11-02 21:07:43,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934102392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:07:43,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:07:43,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:07:43,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109354687] [2021-11-02 21:07:43,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:07:43,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:07:43,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:07:43,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:07:43,550 INFO L87 Difference]: Start difference. First operand 19736 states and 27320 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 21:07:45,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:08:00,801 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 21:08:23,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:08:23,518 INFO L93 Difference]: Finished difference Result 41994 states and 58282 transitions. [2021-11-02 21:08:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:08:23,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-02 21:08:23,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:08:23,550 INFO L225 Difference]: With dead ends: 41994 [2021-11-02 21:08:23,551 INFO L226 Difference]: Without dead ends: 22261 [2021-11-02 21:08:23,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:08:23,576 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 299 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 3906 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35633.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.61ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3906 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39344.08ms IncrementalHoareTripleChecker+Time [2021-11-02 21:08:23,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 0 Invalid, 3912 Unknown, 0 Unchecked, 19.61ms Time], IncrementalHoareTripleChecker [4 Valid, 3906 Invalid, 2 Unknown, 0 Unchecked, 39344.08ms Time] [2021-11-02 21:08:23,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22261 states. [2021-11-02 21:08:23,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22261 to 22200. [2021-11-02 21:08:24,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22200 states, 22189 states have (on average 1.3919509666952092) internal successors, (30886), 22199 states have internal predecessors, (30886), 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 21:08:24,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22200 states to 22200 states and 30886 transitions. [2021-11-02 21:08:24,053 INFO L78 Accepts]: Start accepts. Automaton has 22200 states and 30886 transitions. Word has length 42 [2021-11-02 21:08:24,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:08:24,053 INFO L470 AbstractCegarLoop]: Abstraction has 22200 states and 30886 transitions. [2021-11-02 21:08:24,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 21:08:24,053 INFO L276 IsEmpty]: Start isEmpty. Operand 22200 states and 30886 transitions. [2021-11-02 21:08:24,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 21:08:24,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:08:24,059 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 21:08:24,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 21:08:24,060 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 21:08:24,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:08:24,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1019502293, now seen corresponding path program 1 times [2021-11-02 21:08:24,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:08:24,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777174552] [2021-11-02 21:08:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:08:24,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:08:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:08:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 21:08:24,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:08:24,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777174552] [2021-11-02 21:08:24,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777174552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:08:24,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:08:24,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:08:24,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186808756] [2021-11-02 21:08:24,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:08:24,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:08:24,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:08:24,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:08:24,677 INFO L87 Difference]: Start difference. First operand 22200 states and 30886 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:08:26,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:08:27,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 21:08:43,472 WARN L515 Checker$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 21:09:22,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:09:22,842 INFO L93 Difference]: Finished difference Result 51740 states and 72234 transitions. [2021-11-02 21:09:22,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:09:22,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-02 21:09:22,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:09:22,885 INFO L225 Difference]: With dead ends: 51740 [2021-11-02 21:09:22,886 INFO L226 Difference]: Without dead ends: 29543 [2021-11-02 21:09:22,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:09:22,906 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1848 mSDsluCounter, 1864 mSDsCounter, 0 mSdLazyCounter, 5704 mSolverCounterSat, 23 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51548.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.11ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 5704 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57293.70ms IncrementalHoareTripleChecker+Time [2021-11-02 21:09:22,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1848 Valid, 0 Invalid, 5729 Unknown, 0 Unchecked, 29.11ms Time], IncrementalHoareTripleChecker [23 Valid, 5704 Invalid, 2 Unknown, 0 Unchecked, 57293.70ms Time] [2021-11-02 21:09:22,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29543 states. [2021-11-02 21:09:23,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29543 to 29516. [2021-11-02 21:09:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29516 states, 29505 states have (on average 1.3892560582952043) internal successors, (40990), 29515 states have internal predecessors, (40990), 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 21:09:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29516 states to 29516 states and 40990 transitions. [2021-11-02 21:09:23,453 INFO L78 Accepts]: Start accepts. Automaton has 29516 states and 40990 transitions. Word has length 56 [2021-11-02 21:09:23,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:09:23,454 INFO L470 AbstractCegarLoop]: Abstraction has 29516 states and 40990 transitions. [2021-11-02 21:09:23,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:09:23,454 INFO L276 IsEmpty]: Start isEmpty. Operand 29516 states and 40990 transitions. [2021-11-02 21:09:23,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-02 21:09:23,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:09:23,457 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:09:23,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 21:09:23,457 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 21:09:23,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:09:23,457 INFO L85 PathProgramCache]: Analyzing trace with hash 606612250, now seen corresponding path program 1 times [2021-11-02 21:09:23,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:09:23,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591060274] [2021-11-02 21:09:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:09:23,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:09:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:09:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 21:09:24,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:09:24,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591060274] [2021-11-02 21:09:24,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591060274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:09:24,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:09:24,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:09:24,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779302540] [2021-11-02 21:09:24,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:09:24,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:09:24,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:09:24,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:09:24,128 INFO L87 Difference]: Start difference. First operand 29516 states and 40990 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 21:09:26,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:09:27,422 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 21:09:38,025 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 21:10:09,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:10:09,458 INFO L93 Difference]: Finished difference Result 54140 states and 74966 transitions. [2021-11-02 21:10:09,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:10:09,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-11-02 21:10:09,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:10:09,509 INFO L225 Difference]: With dead ends: 54140 [2021-11-02 21:10:09,509 INFO L226 Difference]: Without dead ends: 24627 [2021-11-02 21:10:09,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.04ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:10:09,540 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1949 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 4034 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39453.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1949 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.17ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4034 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44592.53ms IncrementalHoareTripleChecker+Time [2021-11-02 21:10:09,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1949 Valid, 0 Invalid, 4036 Unknown, 0 Unchecked, 23.17ms Time], IncrementalHoareTripleChecker [0 Valid, 4034 Invalid, 2 Unknown, 0 Unchecked, 44592.53ms Time] [2021-11-02 21:10:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24627 states. [2021-11-02 21:10:09,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24627 to 14051. [2021-11-02 21:10:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14051 states, 14040 states have (on average 1.3962962962962964) internal successors, (19604), 14050 states have internal predecessors, (19604), 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 21:10:09,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14051 states to 14051 states and 19604 transitions. [2021-11-02 21:10:09,881 INFO L78 Accepts]: Start accepts. Automaton has 14051 states and 19604 transitions. Word has length 71 [2021-11-02 21:10:09,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:10:09,882 INFO L470 AbstractCegarLoop]: Abstraction has 14051 states and 19604 transitions. [2021-11-02 21:10:09,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 21:10:09,882 INFO L276 IsEmpty]: Start isEmpty. Operand 14051 states and 19604 transitions. [2021-11-02 21:10:09,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 21:10:09,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:10:09,883 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-02 21:10:09,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 21:10:09,884 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 21:10:09,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:10:09,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2036984032, now seen corresponding path program 1 times [2021-11-02 21:10:09,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:10:09,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091338482] [2021-11-02 21:10:09,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:10:09,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:10:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:10:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-02 21:10:10,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:10:10,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091338482] [2021-11-02 21:10:10,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091338482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:10:10,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:10:10,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 21:10:10,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728861067] [2021-11-02 21:10:10,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 21:10:10,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:10:10,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 21:10:10,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:10:10,803 INFO L87 Difference]: Start difference. First operand 14051 states and 19604 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 21:10:13,068 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:14,241 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:43,319 WARN L515 Checker$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 21:12:20,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:12:20,143 INFO L93 Difference]: Finished difference Result 55103 states and 76425 transitions. [2021-11-02 21:12:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 21:12:20,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 72 [2021-11-02 21:12:20,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:12:20,214 INFO L225 Difference]: With dead ends: 55103 [2021-11-02 21:12:20,215 INFO L226 Difference]: Without dead ends: 41070 [2021-11-02 21:12:20,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 297.13ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 21:12:20,233 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9238 mSDsluCounter, 7215 mSDsCounter, 0 mSdLazyCounter, 12770 mSolverCounterSat, 54 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 114816.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9238 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 124.84ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 12770 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127585.08ms IncrementalHoareTripleChecker+Time [2021-11-02 21:12:20,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9238 Valid, 0 Invalid, 12826 Unknown, 0 Unchecked, 124.84ms Time], IncrementalHoareTripleChecker [54 Valid, 12770 Invalid, 2 Unknown, 0 Unchecked, 127585.08ms Time] [2021-11-02 21:12:20,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41070 states. [2021-11-02 21:12:20,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41070 to 17321. [2021-11-02 21:12:20,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17321 states, 17310 states have (on average 1.405314846909301) internal successors, (24326), 17320 states have internal predecessors, (24326), 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 21:12:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17321 states to 17321 states and 24326 transitions. [2021-11-02 21:12:20,791 INFO L78 Accepts]: Start accepts. Automaton has 17321 states and 24326 transitions. Word has length 72 [2021-11-02 21:12:20,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:12:20,793 INFO L470 AbstractCegarLoop]: Abstraction has 17321 states and 24326 transitions. [2021-11-02 21:12:20,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 21:12:20,793 INFO L276 IsEmpty]: Start isEmpty. Operand 17321 states and 24326 transitions. [2021-11-02 21:12:20,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 21:12:20,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:12:20,800 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:12:20,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 21:12:20,801 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 21:12:20,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:12:20,802 INFO L85 PathProgramCache]: Analyzing trace with hash -272132865, now seen corresponding path program 1 times [2021-11-02 21:12:20,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:12:20,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685480872] [2021-11-02 21:12:20,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:12:20,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:12:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:12:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-02 21:12:21,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:12:21,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685480872] [2021-11-02 21:12:21,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685480872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:12:21,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:12:21,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:12:21,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124206412] [2021-11-02 21:12:21,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:12:21,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:12:21,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:12:21,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:12:21,486 INFO L87 Difference]: Start difference. First operand 17321 states and 24326 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 21:12:23,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:12:25,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 21:12:41,480 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 21:13:24,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:13:24,396 INFO L93 Difference]: Finished difference Result 38697 states and 54370 transitions. [2021-11-02 21:13:24,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:13:24,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 73 [2021-11-02 21:13:24,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:13:24,422 INFO L225 Difference]: With dead ends: 38697 [2021-11-02 21:13:24,422 INFO L226 Difference]: Without dead ends: 21394 [2021-11-02 21:13:24,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.69ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:13:24,438 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1823 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 5716 mSolverCounterSat, 21 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54427.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.98ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 5716 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62101.99ms IncrementalHoareTripleChecker+Time [2021-11-02 21:13:24,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1823 Valid, 0 Invalid, 5739 Unknown, 0 Unchecked, 29.98ms Time], IncrementalHoareTripleChecker [21 Valid, 5716 Invalid, 2 Unknown, 0 Unchecked, 62101.99ms Time] [2021-11-02 21:13:24,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21394 states. [2021-11-02 21:13:24,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21394 to 20591. [2021-11-02 21:13:24,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20591 states, 20580 states have (on average 1.403692905733722) internal successors, (28888), 20590 states have internal predecessors, (28888), 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 21:13:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20591 states to 20591 states and 28888 transitions. [2021-11-02 21:13:24,901 INFO L78 Accepts]: Start accepts. Automaton has 20591 states and 28888 transitions. Word has length 73 [2021-11-02 21:13:24,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:13:24,901 INFO L470 AbstractCegarLoop]: Abstraction has 20591 states and 28888 transitions. [2021-11-02 21:13:24,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 21:13:24,901 INFO L276 IsEmpty]: Start isEmpty. Operand 20591 states and 28888 transitions. [2021-11-02 21:13:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 21:13:24,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:13:24,904 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2021-11-02 21:13:24,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 21:13:24,904 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 21:13:24,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:13:24,905 INFO L85 PathProgramCache]: Analyzing trace with hash -698320662, now seen corresponding path program 1 times [2021-11-02 21:13:24,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:13:24,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976294533] [2021-11-02 21:13:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:13:24,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:13:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:13:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-02 21:13:25,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:13:25,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976294533] [2021-11-02 21:13:25,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976294533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:13:25,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:13:25,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:13:25,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843591049] [2021-11-02 21:13:25,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:13:25,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:13:25,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:13:25,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:13:25,712 INFO L87 Difference]: Start difference. First operand 20591 states and 28888 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 21:13:27,919 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:13:45,078 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15