./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 13:40:25,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 13:40:25,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 13:40:25,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 13:40:25,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 13:40:25,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 13:40:25,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 13:40:25,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 13:40:25,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 13:40:25,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 13:40:25,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 13:40:25,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 13:40:25,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 13:40:25,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 13:40:25,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 13:40:25,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 13:40:25,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 13:40:25,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 13:40:25,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 13:40:25,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 13:40:25,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 13:40:25,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 13:40:25,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 13:40:25,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 13:40:25,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 13:40:25,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 13:40:25,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 13:40:25,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 13:40:25,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 13:40:25,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 13:40:25,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 13:40:25,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 13:40:25,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 13:40:25,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 13:40:25,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 13:40:25,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 13:40:25,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 13:40:25,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 13:40:25,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 13:40:25,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 13:40:25,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 13:40:25,397 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 13:40:25,425 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 13:40:25,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 13:40:25,425 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 13:40:25,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 13:40:25,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 13:40:25,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 13:40:25,427 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 13:40:25,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 13:40:25,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 13:40:25,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 13:40:25,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 13:40:25,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 13:40:25,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 13:40:25,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 13:40:25,429 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 13:40:25,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 13:40:25,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 13:40:25,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 13:40:25,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 13:40:25,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 13:40:25,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 13:40:25,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 13:40:25,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 13:40:25,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 13:40:25,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 13:40:25,430 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 13:40:25,431 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 13:40:25,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 13:40:25,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 13:40:25,431 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 [2021-11-06 13:40:25,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 13:40:25,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 13:40:25,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 13:40:25,640 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 13:40:25,640 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 13:40:25,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-11-06 13:40:25,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42a564903/ce2e7a4cf5aa49d2a58318c9419c4d38/FLAG7d17c55e7 [2021-11-06 13:40:26,157 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 13:40:26,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-11-06 13:40:26,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42a564903/ce2e7a4cf5aa49d2a58318c9419c4d38/FLAG7d17c55e7 [2021-11-06 13:40:26,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42a564903/ce2e7a4cf5aa49d2a58318c9419c4d38 [2021-11-06 13:40:26,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 13:40:26,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 13:40:26,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 13:40:26,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 13:40:26,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 13:40:26,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:40:26" (1/1) ... [2021-11-06 13:40:26,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d51f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:40:26, skipping insertion in model container [2021-11-06 13:40:26,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:40:26" (1/1) ... [2021-11-06 13:40:26,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 13:40:26,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 13:40:27,081 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2021-11-06 13:40:27,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 13:40:27,191 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 13:40:27,342 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2021-11-06 13:40:27,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 13:40:27,484 INFO L208 MainTranslator]: Completed translation [2021-11-06 13:40:27,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:40:27 WrapperNode [2021-11-06 13:40:27,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 13:40:27,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 13:40:27,487 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 13:40:27,487 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 13:40:27,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:40:27" (1/1) ... [2021-11-06 13:40:27,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:40:27" (1/1) ... [2021-11-06 13:40:27,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 13:40:27,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 13:40:27,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 13:40:27,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 13:40:27,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:40:27" (1/1) ... [2021-11-06 13:40:27,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:40:27" (1/1) ... [2021-11-06 13:40:27,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:40:27" (1/1) ... [2021-11-06 13:40:27,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:40:27" (1/1) ... [2021-11-06 13:40:28,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:40:27" (1/1) ... [2021-11-06 13:40:28,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:40:27" (1/1) ... [2021-11-06 13:40:28,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:40:27" (1/1) ... [2021-11-06 13:40:28,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 13:40:28,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 13:40:28,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 13:40:28,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 13:40:28,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:40:27" (1/1) ... [2021-11-06 13:40:28,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 13:40:28,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 13:40:28,176 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) [2021-11-06 13:40:28,194 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 [2021-11-06 13:40:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 13:40:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 13:40:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 13:40:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 13:40:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 13:40:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 13:40:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 13:40:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 13:40:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-06 13:40:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 13:40:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 13:40:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 13:41:14,763 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 13:41:14,763 INFO L299 CfgBuilder]: Removed 1211 assume(true) statements. [2021-11-06 13:41:14,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 01:41:14 BoogieIcfgContainer [2021-11-06 13:41:14,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 13:41:14,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 13:41:14,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 13:41:14,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 13:41:14,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 01:40:26" (1/3) ... [2021-11-06 13:41:14,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5141b8b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 01:41:14, skipping insertion in model container [2021-11-06 13:41:14,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:40:27" (2/3) ... [2021-11-06 13:41:14,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5141b8b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 01:41:14, skipping insertion in model container [2021-11-06 13:41:14,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 01:41:14" (3/3) ... [2021-11-06 13:41:14,771 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-11-06 13:41:14,774 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 13:41:14,774 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-06 13:41:14,815 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 13:41:14,819 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 [2021-11-06 13:41:14,820 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-06 13:41:14,843 INFO L276 IsEmpty]: Start isEmpty. Operand has 1381 states, 1369 states have (on average 1.3783783783783783) internal successors, (1887), 1380 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:14,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-06 13:41:14,848 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:41:14,848 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:41:14,849 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 13:41:14,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:41:14,853 INFO L85 PathProgramCache]: Analyzing trace with hash 12375506, now seen corresponding path program 1 times [2021-11-06 13:41:14,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:41:14,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295846976] [2021-11-06 13:41:14,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:41:14,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:41:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:41:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:41:15,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:41:15,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295846976] [2021-11-06 13:41:15,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295846976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:41:15,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:41:15,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:41:15,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881372121] [2021-11-06 13:41:15,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:41:15,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:41:15,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:41:15,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:15,910 INFO L87 Difference]: Start difference. First operand has 1381 states, 1369 states have (on average 1.3783783783783783) internal successors, (1887), 1380 states have internal predecessors, (1887), 0 states have call successors, (0), 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 4.666666666666667) 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) [2021-11-06 13:41:18,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:41:18,471 INFO L93 Difference]: Finished difference Result 4047 states and 5536 transitions. [2021-11-06 13:41:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:41:18,472 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 [2021-11-06 13:41:18,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:41:18,491 INFO L225 Difference]: With dead ends: 4047 [2021-11-06 13:41:18,491 INFO L226 Difference]: Without dead ends: 2665 [2021-11-06 13:41:18,497 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:18,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2021-11-06 13:41:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2649. [2021-11-06 13:41:18,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2649 states, 2638 states have (on average 1.362016679302502) internal successors, (3593), 2648 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:18,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 3593 transitions. [2021-11-06 13:41:18,595 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 3593 transitions. Word has length 14 [2021-11-06 13:41:18,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:41:18,595 INFO L470 AbstractCegarLoop]: Abstraction has 2649 states and 3593 transitions. [2021-11-06 13:41:18,595 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) [2021-11-06 13:41:18,596 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 3593 transitions. [2021-11-06 13:41:18,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-06 13:41:18,596 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:41:18,597 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:41:18,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 13:41:18,597 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 13:41:18,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:41:18,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1358126481, now seen corresponding path program 1 times [2021-11-06 13:41:18,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:41:18,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205660969] [2021-11-06 13:41:18,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:41:18,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:41:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:41:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:41:19,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:41:19,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205660969] [2021-11-06 13:41:19,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205660969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:41:19,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:41:19,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:41:19,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032917249] [2021-11-06 13:41:19,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:41:19,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:41:19,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:41:19,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:19,224 INFO L87 Difference]: Start difference. First operand 2649 states and 3593 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:19,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:41:19,608 INFO L93 Difference]: Finished difference Result 7634 states and 10327 transitions. [2021-11-06 13:41:19,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:41:19,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-06 13:41:19,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:41:19,625 INFO L225 Difference]: With dead ends: 7634 [2021-11-06 13:41:19,625 INFO L226 Difference]: Without dead ends: 4988 [2021-11-06 13:41:19,631 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:19,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2021-11-06 13:41:19,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4972. [2021-11-06 13:41:19,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4972 states, 4961 states have (on average 1.3549687562991333) internal successors, (6722), 4971 states have internal predecessors, (6722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:19,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4972 states to 4972 states and 6722 transitions. [2021-11-06 13:41:19,736 INFO L78 Accepts]: Start accepts. Automaton has 4972 states and 6722 transitions. Word has length 15 [2021-11-06 13:41:19,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:41:19,736 INFO L470 AbstractCegarLoop]: Abstraction has 4972 states and 6722 transitions. [2021-11-06 13:41:19,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:19,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4972 states and 6722 transitions. [2021-11-06 13:41:19,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-06 13:41:19,737 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:41:19,738 INFO L513 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] [2021-11-06 13:41:19,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 13:41:19,738 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)] === [2021-11-06 13:41:19,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:41:19,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1461430461, now seen corresponding path program 1 times [2021-11-06 13:41:19,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:41:19,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709581512] [2021-11-06 13:41:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:41:19,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:41:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:41:20,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:41:20,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:41:20,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709581512] [2021-11-06 13:41:20,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709581512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:41:20,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:41:20,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 13:41:20,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966747635] [2021-11-06 13:41:20,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 13:41:20,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:41:20,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 13:41:20,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 13:41:20,439 INFO L87 Difference]: Start difference. First operand 4972 states and 6722 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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) [2021-11-06 13:41:21,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:41:21,320 INFO L93 Difference]: Finished difference Result 24702 states and 33402 transitions. [2021-11-06 13:41:21,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 13:41:21,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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 [2021-11-06 13:41:21,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:41:21,408 INFO L225 Difference]: With dead ends: 24702 [2021-11-06 13:41:21,409 INFO L226 Difference]: Without dead ends: 19733 [2021-11-06 13:41:21,427 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-06 13:41:21,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19733 states. [2021-11-06 13:41:21,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19733 to 5014. [2021-11-06 13:41:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 5003 states have (on average 1.3539876074355386) internal successors, (6774), 5013 states have internal predecessors, (6774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:21,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 6774 transitions. [2021-11-06 13:41:21,709 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 6774 transitions. Word has length 23 [2021-11-06 13:41:21,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:41:21,709 INFO L470 AbstractCegarLoop]: Abstraction has 5014 states and 6774 transitions. [2021-11-06 13:41:21,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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) [2021-11-06 13:41:21,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 6774 transitions. [2021-11-06 13:41:21,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-06 13:41:21,714 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:41:21,714 INFO L513 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] [2021-11-06 13:41:21,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 13:41:21,715 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)] === [2021-11-06 13:41:21,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:41:21,716 INFO L85 PathProgramCache]: Analyzing trace with hash 874624447, now seen corresponding path program 1 times [2021-11-06 13:41:21,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:41:21,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287035635] [2021-11-06 13:41:21,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:41:21,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:41:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:41:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:41:22,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:41:22,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287035635] [2021-11-06 13:41:22,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287035635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:41:22,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:41:22,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:41:22,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202068514] [2021-11-06 13:41:22,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:41:22,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:41:22,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:41:22,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:22,338 INFO L87 Difference]: Start difference. First operand 5014 states and 6774 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2021-11-06 13:41:22,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:41:22,691 INFO L93 Difference]: Finished difference Result 5032 states and 6790 transitions. [2021-11-06 13:41:22,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:41:22,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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 [2021-11-06 13:41:22,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:41:22,702 INFO L225 Difference]: With dead ends: 5032 [2021-11-06 13:41:22,702 INFO L226 Difference]: Without dead ends: 5023 [2021-11-06 13:41:22,706 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:22,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2021-11-06 13:41:22,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 5014. [2021-11-06 13:41:22,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 5003 states have (on average 1.3537877273635819) internal successors, (6773), 5013 states have internal predecessors, (6773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:22,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 6773 transitions. [2021-11-06 13:41:22,844 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 6773 transitions. Word has length 23 [2021-11-06 13:41:22,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:41:22,845 INFO L470 AbstractCegarLoop]: Abstraction has 5014 states and 6773 transitions. [2021-11-06 13:41:22,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2021-11-06 13:41:22,845 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 6773 transitions. [2021-11-06 13:41:22,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-06 13:41:22,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:41:22,846 INFO L513 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] [2021-11-06 13:41:22,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 13:41:22,846 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 13:41:22,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:41:22,847 INFO L85 PathProgramCache]: Analyzing trace with hash 874684029, now seen corresponding path program 1 times [2021-11-06 13:41:22,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:41:22,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778620495] [2021-11-06 13:41:22,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:41:22,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:41:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:41:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:41:23,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:41:23,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778620495] [2021-11-06 13:41:23,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778620495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:41:23,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:41:23,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:41:23,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911094173] [2021-11-06 13:41:23,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:41:23,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:41:23,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:41:23,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:23,464 INFO L87 Difference]: Start difference. First operand 5014 states and 6773 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2021-11-06 13:41:25,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:41:25,889 INFO L93 Difference]: Finished difference Result 5014 states and 6773 transitions. [2021-11-06 13:41:25,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:41:25,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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 [2021-11-06 13:41:25,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:41:25,900 INFO L225 Difference]: With dead ends: 5014 [2021-11-06 13:41:25,900 INFO L226 Difference]: Without dead ends: 5012 [2021-11-06 13:41:25,903 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:25,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2021-11-06 13:41:26,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 5012. [2021-11-06 13:41:26,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5012 states, 5002 states have (on average 1.353658536585366) internal successors, (6771), 5011 states have internal predecessors, (6771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:26,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5012 states to 5012 states and 6771 transitions. [2021-11-06 13:41:26,023 INFO L78 Accepts]: Start accepts. Automaton has 5012 states and 6771 transitions. Word has length 23 [2021-11-06 13:41:26,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:41:26,024 INFO L470 AbstractCegarLoop]: Abstraction has 5012 states and 6771 transitions. [2021-11-06 13:41:26,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2021-11-06 13:41:26,024 INFO L276 IsEmpty]: Start isEmpty. Operand 5012 states and 6771 transitions. [2021-11-06 13:41:26,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-06 13:41:26,025 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:41:26,025 INFO L513 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] [2021-11-06 13:41:26,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 13:41:26,025 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 13:41:26,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:41:26,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1345403867, now seen corresponding path program 1 times [2021-11-06 13:41:26,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:41:26,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267059679] [2021-11-06 13:41:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:41:26,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:41:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:41:26,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:41:26,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:41:26,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267059679] [2021-11-06 13:41:26,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267059679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:41:26,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:41:26,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:41:26,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907660350] [2021-11-06 13:41:26,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:41:26,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:41:26,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:41:26,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:26,518 INFO L87 Difference]: Start difference. First operand 5012 states and 6771 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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) [2021-11-06 13:41:28,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:41:28,917 INFO L93 Difference]: Finished difference Result 5012 states and 6771 transitions. [2021-11-06 13:41:28,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:41:28,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 [2021-11-06 13:41:28,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:41:28,925 INFO L225 Difference]: With dead ends: 5012 [2021-11-06 13:41:28,925 INFO L226 Difference]: Without dead ends: 5010 [2021-11-06 13:41:28,927 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:28,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5010 states. [2021-11-06 13:41:29,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5010 to 5010. [2021-11-06 13:41:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5010 states, 5001 states have (on average 1.3535292941411718) internal successors, (6769), 5009 states have internal predecessors, (6769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:29,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5010 states to 5010 states and 6769 transitions. [2021-11-06 13:41:29,091 INFO L78 Accepts]: Start accepts. Automaton has 5010 states and 6769 transitions. Word has length 24 [2021-11-06 13:41:29,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:41:29,092 INFO L470 AbstractCegarLoop]: Abstraction has 5010 states and 6769 transitions. [2021-11-06 13:41:29,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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) [2021-11-06 13:41:29,092 INFO L276 IsEmpty]: Start isEmpty. Operand 5010 states and 6769 transitions. [2021-11-06 13:41:29,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-06 13:41:29,093 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:41:29,093 INFO L513 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] [2021-11-06 13:41:29,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 13:41:29,094 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 13:41:29,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:41:29,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1242150329, now seen corresponding path program 1 times [2021-11-06 13:41:29,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:41:29,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436006102] [2021-11-06 13:41:29,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:41:29,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:41:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:41:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:41:29,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:41:29,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436006102] [2021-11-06 13:41:29,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436006102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:41:29,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:41:29,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:41:29,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832195256] [2021-11-06 13:41:29,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:41:29,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:41:29,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:41:29,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:29,542 INFO L87 Difference]: Start difference. First operand 5010 states and 6769 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:31,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:41:31,977 INFO L93 Difference]: Finished difference Result 11424 states and 15459 transitions. [2021-11-06 13:41:31,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:41:31,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-11-06 13:41:31,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:41:31,990 INFO L225 Difference]: With dead ends: 11424 [2021-11-06 13:41:31,991 INFO L226 Difference]: Without dead ends: 6411 [2021-11-06 13:41:31,998 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:32,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2021-11-06 13:41:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 6381. [2021-11-06 13:41:32,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6381 states, 6372 states have (on average 1.3554613935969868) internal successors, (8637), 6380 states have internal predecessors, (8637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:32,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 8637 transitions. [2021-11-06 13:41:32,210 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 8637 transitions. Word has length 25 [2021-11-06 13:41:32,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:41:32,211 INFO L470 AbstractCegarLoop]: Abstraction has 6381 states and 8637 transitions. [2021-11-06 13:41:32,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:32,211 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 8637 transitions. [2021-11-06 13:41:32,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-06 13:41:32,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:41:32,213 INFO L513 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] [2021-11-06 13:41:32,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 13:41:32,214 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 13:41:32,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:41:32,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1456826833, now seen corresponding path program 1 times [2021-11-06 13:41:32,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:41:32,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855335336] [2021-11-06 13:41:32,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:41:32,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:41:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:41:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:41:32,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:41:32,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855335336] [2021-11-06 13:41:32,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855335336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:41:32,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:41:32,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:41:32,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103627273] [2021-11-06 13:41:32,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:41:32,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:41:32,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:41:32,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:32,678 INFO L87 Difference]: Start difference. First operand 6381 states and 8637 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:35,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:41:35,283 INFO L93 Difference]: Finished difference Result 15863 states and 21540 transitions. [2021-11-06 13:41:35,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:41:35,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-06 13:41:35,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:41:35,305 INFO L225 Difference]: With dead ends: 15863 [2021-11-06 13:41:35,305 INFO L226 Difference]: Without dead ends: 9485 [2021-11-06 13:41:35,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:35,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9485 states. [2021-11-06 13:41:35,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9485 to 9473. [2021-11-06 13:41:35,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9473 states, 9464 states have (on average 1.3538672865595942) internal successors, (12813), 9472 states have internal predecessors, (12813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:35,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9473 states to 9473 states and 12813 transitions. [2021-11-06 13:41:35,548 INFO L78 Accepts]: Start accepts. Automaton has 9473 states and 12813 transitions. Word has length 33 [2021-11-06 13:41:35,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:41:35,549 INFO L470 AbstractCegarLoop]: Abstraction has 9473 states and 12813 transitions. [2021-11-06 13:41:35,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:35,549 INFO L276 IsEmpty]: Start isEmpty. Operand 9473 states and 12813 transitions. [2021-11-06 13:41:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 13:41:35,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:41:35,551 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:41:35,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 13:41:35,551 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 13:41:35,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:41:35,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2053211790, now seen corresponding path program 1 times [2021-11-06 13:41:35,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:41:35,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221018735] [2021-11-06 13:41:35,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:41:35,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:41:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:41:36,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:41:36,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:41:36,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221018735] [2021-11-06 13:41:36,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221018735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:41:36,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:41:36,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:41:36,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168274124] [2021-11-06 13:41:36,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:41:36,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:41:36,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:41:36,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:36,049 INFO L87 Difference]: Start difference. First operand 9473 states and 12813 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:36,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:41:36,481 INFO L93 Difference]: Finished difference Result 20290 states and 27570 transitions. [2021-11-06 13:41:36,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:41:36,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-06 13:41:36,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:41:36,504 INFO L225 Difference]: With dead ends: 20290 [2021-11-06 13:41:36,504 INFO L226 Difference]: Without dead ends: 10820 [2021-11-06 13:41:36,518 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:36,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10820 states. [2021-11-06 13:41:36,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10820 to 10765. [2021-11-06 13:41:36,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10765 states, 10756 states have (on average 1.3664001487541837) internal successors, (14697), 10764 states have internal predecessors, (14697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:36,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10765 states to 10765 states and 14697 transitions. [2021-11-06 13:41:36,778 INFO L78 Accepts]: Start accepts. Automaton has 10765 states and 14697 transitions. Word has length 45 [2021-11-06 13:41:36,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:41:36,778 INFO L470 AbstractCegarLoop]: Abstraction has 10765 states and 14697 transitions. [2021-11-06 13:41:36,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:36,778 INFO L276 IsEmpty]: Start isEmpty. Operand 10765 states and 14697 transitions. [2021-11-06 13:41:36,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-06 13:41:36,780 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:41:36,780 INFO L513 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] [2021-11-06 13:41:36,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 13:41:36,781 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 13:41:36,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:41:36,781 INFO L85 PathProgramCache]: Analyzing trace with hash -234060580, now seen corresponding path program 1 times [2021-11-06 13:41:36,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:41:36,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077855482] [2021-11-06 13:41:36,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:41:36,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:41:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:41:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 13:41:37,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:41:37,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077855482] [2021-11-06 13:41:37,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077855482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:41:37,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:41:37,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:41:37,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333864876] [2021-11-06 13:41:37,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:41:37,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:41:37,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:41:37,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:37,381 INFO L87 Difference]: Start difference. First operand 10765 states and 14697 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:40,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:41:40,133 INFO L93 Difference]: Finished difference Result 25013 states and 34292 transitions. [2021-11-06 13:41:40,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:41:40,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-06 13:41:40,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:41:40,162 INFO L225 Difference]: With dead ends: 25013 [2021-11-06 13:41:40,162 INFO L226 Difference]: Without dead ends: 14251 [2021-11-06 13:41:40,179 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:40,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14251 states. [2021-11-06 13:41:40,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14251 to 14239. [2021-11-06 13:41:40,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14239 states, 14230 states have (on average 1.3647926914968376) internal successors, (19421), 14238 states have internal predecessors, (19421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14239 states to 14239 states and 19421 transitions. [2021-11-06 13:41:40,626 INFO L78 Accepts]: Start accepts. Automaton has 14239 states and 19421 transitions. Word has length 54 [2021-11-06 13:41:40,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:41:40,626 INFO L470 AbstractCegarLoop]: Abstraction has 14239 states and 19421 transitions. [2021-11-06 13:41:40,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:40,626 INFO L276 IsEmpty]: Start isEmpty. Operand 14239 states and 19421 transitions. [2021-11-06 13:41:40,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 13:41:40,630 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:41:40,630 INFO L513 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] [2021-11-06 13:41:40,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 13:41:40,631 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 13:41:40,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:41:40,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1153792279, now seen corresponding path program 1 times [2021-11-06 13:41:40,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:41:40,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139281615] [2021-11-06 13:41:40,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:41:40,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:41:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:41:41,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 13:41:41,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:41:41,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139281615] [2021-11-06 13:41:41,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139281615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:41:41,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:41:41,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:41:41,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690056033] [2021-11-06 13:41:41,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:41:41,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:41:41,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:41:41,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:41,272 INFO L87 Difference]: Start difference. First operand 14239 states and 19421 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:41,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:41:41,541 INFO L93 Difference]: Finished difference Result 28483 states and 38855 transitions. [2021-11-06 13:41:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:41:41,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-06 13:41:41,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:41:41,570 INFO L225 Difference]: With dead ends: 28483 [2021-11-06 13:41:41,571 INFO L226 Difference]: Without dead ends: 14247 [2021-11-06 13:41:41,592 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:41,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14247 states. [2021-11-06 13:41:41,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14247 to 14247. [2021-11-06 13:41:42,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14247 states, 14238 states have (on average 1.3645877229948027) internal successors, (19429), 14246 states have internal predecessors, (19429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:42,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14247 states to 14247 states and 19429 transitions. [2021-11-06 13:41:42,030 INFO L78 Accepts]: Start accepts. Automaton has 14247 states and 19429 transitions. Word has length 69 [2021-11-06 13:41:42,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:41:42,031 INFO L470 AbstractCegarLoop]: Abstraction has 14247 states and 19429 transitions. [2021-11-06 13:41:42,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:42,031 INFO L276 IsEmpty]: Start isEmpty. Operand 14247 states and 19429 transitions. [2021-11-06 13:41:42,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 13:41:42,034 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:41:42,034 INFO L513 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] [2021-11-06 13:41:42,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 13:41:42,035 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 13:41:42,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:41:42,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1155639321, now seen corresponding path program 1 times [2021-11-06 13:41:42,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:41:42,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135543885] [2021-11-06 13:41:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:41:42,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:41:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:41:42,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 13:41:42,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:41:42,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135543885] [2021-11-06 13:41:42,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135543885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:41:42,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:41:42,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:41:42,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227023887] [2021-11-06 13:41:42,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:41:42,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:41:42,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:41:42,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:42,581 INFO L87 Difference]: Start difference. First operand 14247 states and 19429 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:45,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:41:45,241 INFO L93 Difference]: Finished difference Result 28489 states and 38854 transitions. [2021-11-06 13:41:45,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:41:45,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-06 13:41:45,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:41:45,270 INFO L225 Difference]: With dead ends: 28489 [2021-11-06 13:41:45,270 INFO L226 Difference]: Without dead ends: 14245 [2021-11-06 13:41:45,291 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:45,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14245 states. [2021-11-06 13:41:45,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14245 to 14108. [2021-11-06 13:41:45,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14108 states, 14100 states have (on average 1.3641843971631207) internal successors, (19235), 14107 states have internal predecessors, (19235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14108 states to 14108 states and 19235 transitions. [2021-11-06 13:41:45,762 INFO L78 Accepts]: Start accepts. Automaton has 14108 states and 19235 transitions. Word has length 69 [2021-11-06 13:41:45,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:41:45,762 INFO L470 AbstractCegarLoop]: Abstraction has 14108 states and 19235 transitions. [2021-11-06 13:41:45,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 14108 states and 19235 transitions. [2021-11-06 13:41:45,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 13:41:45,766 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:41:45,766 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:41:45,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 13:41:45,766 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 13:41:45,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:41:45,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1383268386, now seen corresponding path program 1 times [2021-11-06 13:41:45,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:41:45,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380890493] [2021-11-06 13:41:45,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:41:45,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:41:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:41:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 13:41:46,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:41:46,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380890493] [2021-11-06 13:41:46,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380890493] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 13:41:46,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411527236] [2021-11-06 13:41:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:41:46,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 13:41:46,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 13:41:46,333 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 13:41:46,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 13:41:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:41:49,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 12893 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 13:41:49,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 13:41:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 13:41:49,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411527236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:41:49,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 13:41:49,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2021-11-06 13:41:49,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215655142] [2021-11-06 13:41:49,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 13:41:49,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:41:49,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 13:41:49,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-06 13:41:49,549 INFO L87 Difference]: Start difference. First operand 14108 states and 19235 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2021-11-06 13:41:53,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:41:53,537 INFO L93 Difference]: Finished difference Result 41811 states and 57055 transitions. [2021-11-06 13:41:53,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 13:41:53,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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 [2021-11-06 13:41:53,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:41:53,592 INFO L225 Difference]: With dead ends: 41811 [2021-11-06 13:41:53,592 INFO L226 Difference]: Without dead ends: 27666 [2021-11-06 13:41:53,617 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-06 13:41:53,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27666 states. [2021-11-06 13:41:54,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27666 to 14113. [2021-11-06 13:41:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14113 states, 14105 states have (on average 1.362353775257001) internal successors, (19216), 14112 states have internal predecessors, (19216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14113 states to 14113 states and 19216 transitions. [2021-11-06 13:41:54,170 INFO L78 Accepts]: Start accepts. Automaton has 14113 states and 19216 transitions. Word has length 73 [2021-11-06 13:41:54,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:41:54,170 INFO L470 AbstractCegarLoop]: Abstraction has 14113 states and 19216 transitions. [2021-11-06 13:41:54,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2021-11-06 13:41:54,171 INFO L276 IsEmpty]: Start isEmpty. Operand 14113 states and 19216 transitions. [2021-11-06 13:41:54,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 13:41:54,174 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:41:54,174 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:41:54,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 13:41:54,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-06 13:41:54,400 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 13:41:54,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:41:54,400 INFO L85 PathProgramCache]: Analyzing trace with hash -860246004, now seen corresponding path program 1 times [2021-11-06 13:41:54,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:41:54,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527539256] [2021-11-06 13:41:54,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:41:54,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:41:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:41:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 13:41:54,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:41:54,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527539256] [2021-11-06 13:41:54,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527539256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:41:54,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:41:54,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:41:54,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163966805] [2021-11-06 13:41:54,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:41:54,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:41:54,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:41:54,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:41:54,815 INFO L87 Difference]: Start difference. First operand 14113 states and 19216 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:56,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:41:56,332 INFO L93 Difference]: Finished difference Result 67691 states and 92366 transitions. [2021-11-06 13:41:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 13:41:56,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 85 [2021-11-06 13:41:56,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:41:56,440 INFO L225 Difference]: With dead ends: 67691 [2021-11-06 13:41:56,440 INFO L226 Difference]: Without dead ends: 53581 [2021-11-06 13:41:56,465 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:41:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53581 states. [2021-11-06 13:41:57,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53581 to 14129. [2021-11-06 13:41:57,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14129 states, 14121 states have (on average 1.3619432051554423) internal successors, (19232), 14128 states have internal predecessors, (19232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:57,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14129 states to 14129 states and 19232 transitions. [2021-11-06 13:41:57,138 INFO L78 Accepts]: Start accepts. Automaton has 14129 states and 19232 transitions. Word has length 85 [2021-11-06 13:41:57,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:41:57,138 INFO L470 AbstractCegarLoop]: Abstraction has 14129 states and 19232 transitions. [2021-11-06 13:41:57,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:41:57,139 INFO L276 IsEmpty]: Start isEmpty. Operand 14129 states and 19232 transitions. [2021-11-06 13:41:57,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 13:41:57,142 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:41:57,143 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:41:57,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 13:41:57,143 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 13:41:57,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:41:57,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1508724510, now seen corresponding path program 1 times [2021-11-06 13:41:57,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:41:57,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754337154] [2021-11-06 13:41:57,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:41:57,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:41:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:41:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 13:41:57,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:41:57,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754337154] [2021-11-06 13:41:57,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754337154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:41:57,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:41:57,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:41:57,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650840602] [2021-11-06 13:41:57,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:41:57,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:41:57,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:41:57,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:41:57,650 INFO L87 Difference]: Start difference. First operand 14129 states and 19232 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:42:00,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:42:00,905 INFO L93 Difference]: Finished difference Result 41768 states and 56925 transitions. [2021-11-06 13:42:00,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:42:00,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 87 [2021-11-06 13:42:00,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:42:00,956 INFO L225 Difference]: With dead ends: 41768 [2021-11-06 13:42:00,956 INFO L226 Difference]: Without dead ends: 27642 [2021-11-06 13:42:00,980 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:42:01,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27642 states. [2021-11-06 13:42:01,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27642 to 27433. [2021-11-06 13:42:02,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27433 states, 27425 states have (on average 1.3648860528714677) internal successors, (37432), 27432 states have internal predecessors, (37432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:42:02,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27433 states to 27433 states and 37432 transitions. [2021-11-06 13:42:02,045 INFO L78 Accepts]: Start accepts. Automaton has 27433 states and 37432 transitions. Word has length 87 [2021-11-06 13:42:02,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:42:02,045 INFO L470 AbstractCegarLoop]: Abstraction has 27433 states and 37432 transitions. [2021-11-06 13:42:02,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:42:02,046 INFO L276 IsEmpty]: Start isEmpty. Operand 27433 states and 37432 transitions. [2021-11-06 13:42:02,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-06 13:42:02,050 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:42:02,050 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:42:02,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 13:42:02,051 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 13:42:02,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:42:02,051 INFO L85 PathProgramCache]: Analyzing trace with hash 962307733, now seen corresponding path program 1 times [2021-11-06 13:42:02,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:42:02,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805064613] [2021-11-06 13:42:02,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:42:02,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:42:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:42:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 13:42:02,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:42:02,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805064613] [2021-11-06 13:42:02,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805064613] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 13:42:02,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181074640] [2021-11-06 13:42:02,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:42:02,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 13:42:02,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 13:42:02,526 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 13:42:02,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 13:42:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:42:05,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 12994 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 13:42:05,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 13:42:05,405 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 13:42:05,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181074640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:42:05,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 13:42:05,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-06 13:42:05,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756700802] [2021-11-06 13:42:05,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:42:05,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:42:05,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:42:05,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:42:05,406 INFO L87 Difference]: Start difference. First operand 27433 states and 37432 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:42:09,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:42:09,930 INFO L93 Difference]: Finished difference Result 82295 states and 112291 transitions. [2021-11-06 13:42:09,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 13:42:09,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 90 [2021-11-06 13:42:09,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:42:10,073 INFO L225 Difference]: With dead ends: 82295 [2021-11-06 13:42:10,073 INFO L226 Difference]: Without dead ends: 82287 [2021-11-06 13:42:10,099 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:42:10,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82287 states. [2021-11-06 13:42:12,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82287 to 81433. [2021-11-06 13:42:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81433 states, 81425 states have (on average 1.3671476819158734) internal successors, (111320), 81432 states have internal predecessors, (111320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:42:13,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81433 states to 81433 states and 111320 transitions. [2021-11-06 13:42:13,443 INFO L78 Accepts]: Start accepts. Automaton has 81433 states and 111320 transitions. Word has length 90 [2021-11-06 13:42:13,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:42:13,443 INFO L470 AbstractCegarLoop]: Abstraction has 81433 states and 111320 transitions. [2021-11-06 13:42:13,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:42:13,444 INFO L276 IsEmpty]: Start isEmpty. Operand 81433 states and 111320 transitions. [2021-11-06 13:42:13,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-06 13:42:13,452 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:42:13,452 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:42:13,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-06 13:42:13,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-06 13:42:13,679 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 13:42:13,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:42:13,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1841486479, now seen corresponding path program 1 times [2021-11-06 13:42:13,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:42:13,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409746594] [2021-11-06 13:42:13,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:42:13,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:42:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:42:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 13:42:14,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:42:14,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409746594] [2021-11-06 13:42:14,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409746594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:42:14,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:42:14,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:42:14,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984389162] [2021-11-06 13:42:14,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:42:14,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:42:14,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:42:14,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:42:14,137 INFO L87 Difference]: Start difference. First operand 81433 states and 111320 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:42:20,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:42:20,581 INFO L93 Difference]: Finished difference Result 182950 states and 250975 transitions. [2021-11-06 13:42:20,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:42:20,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 91 [2021-11-06 13:42:20,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:42:20,834 INFO L225 Difference]: With dead ends: 182950 [2021-11-06 13:42:20,834 INFO L226 Difference]: Without dead ends: 101520 [2021-11-06 13:42:20,924 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:42:21,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101520 states. [2021-11-06 13:42:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101520 to 101497. [2021-11-06 13:42:25,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101497 states, 101489 states have (on average 1.3659411364778449) internal successors, (138628), 101496 states have internal predecessors, (138628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:42:25,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101497 states to 101497 states and 138628 transitions. [2021-11-06 13:42:25,419 INFO L78 Accepts]: Start accepts. Automaton has 101497 states and 138628 transitions. Word has length 91 [2021-11-06 13:42:25,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:42:25,419 INFO L470 AbstractCegarLoop]: Abstraction has 101497 states and 138628 transitions. [2021-11-06 13:42:25,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:42:25,419 INFO L276 IsEmpty]: Start isEmpty. Operand 101497 states and 138628 transitions. [2021-11-06 13:42:25,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-06 13:42:25,428 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:42:25,428 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:42:25,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 13:42:25,429 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 13:42:25,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:42:25,429 INFO L85 PathProgramCache]: Analyzing trace with hash 561622801, now seen corresponding path program 1 times [2021-11-06 13:42:25,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:42:25,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854395629] [2021-11-06 13:42:25,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:42:25,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:42:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:42:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 13:42:26,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:42:26,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854395629] [2021-11-06 13:42:26,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854395629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:42:26,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:42:26,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:42:26,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430388754] [2021-11-06 13:42:26,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:42:26,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:42:26,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:42:26,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:42:26,184 INFO L87 Difference]: Start difference. First operand 101497 states and 138628 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:42:31,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:42:31,599 INFO L93 Difference]: Finished difference Result 149301 states and 203538 transitions. [2021-11-06 13:42:31,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 13:42:31,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 91 [2021-11-06 13:42:31,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:42:31,901 INFO L225 Difference]: With dead ends: 149301 [2021-11-06 13:42:31,901 INFO L226 Difference]: Without dead ends: 139885 [2021-11-06 13:42:31,946 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:42:32,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139885 states.