./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 16:07:06,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 16:07:06,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 16:07:06,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 16:07:06,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 16:07:06,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 16:07:06,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 16:07:06,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 16:07:06,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 16:07:06,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 16:07:06,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 16:07:06,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 16:07:06,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 16:07:06,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 16:07:06,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 16:07:06,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 16:07:06,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 16:07:06,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 16:07:06,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 16:07:06,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 16:07:06,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 16:07:06,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 16:07:06,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 16:07:06,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 16:07:06,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 16:07:06,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 16:07:06,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 16:07:06,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 16:07:06,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 16:07:06,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 16:07:06,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 16:07:06,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 16:07:06,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 16:07:06,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 16:07:06,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 16:07:06,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 16:07:06,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 16:07:06,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 16:07:06,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 16:07:06,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 16:07:06,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 16:07:06,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 16:07:06,629 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 16:07:06,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 16:07:06,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 16:07:06,630 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 16:07:06,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 16:07:06,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 16:07:06,632 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 16:07:06,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 16:07:06,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 16:07:06,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 16:07:06,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 16:07:06,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 16:07:06,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 16:07:06,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 16:07:06,634 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 16:07:06,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 16:07:06,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 16:07:06,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 16:07:06,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 16:07:06,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:07:06,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 16:07:06,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 16:07:06,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 16:07:06,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 16:07:06,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 16:07:06,636 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 16:07:06,636 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 16:07:06,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 16:07:06,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 16:07:06,638 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 [2021-11-06 16:07:06,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 16:07:06,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 16:07:06,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 16:07:06,898 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 16:07:06,899 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 16:07:06,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2021-11-06 16:07:06,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae315abc8/5199cbd32bc04979b237a957b0a1d6ca/FLAG08147be36 [2021-11-06 16:07:07,691 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 16:07:07,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2021-11-06 16:07:07,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae315abc8/5199cbd32bc04979b237a957b0a1d6ca/FLAG08147be36 [2021-11-06 16:07:07,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae315abc8/5199cbd32bc04979b237a957b0a1d6ca [2021-11-06 16:07:07,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 16:07:07,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 16:07:07,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 16:07:07,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 16:07:07,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 16:07:07,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:07:07" (1/1) ... [2021-11-06 16:07:07,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bbc39ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:07:07, skipping insertion in model container [2021-11-06 16:07:07,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:07:07" (1/1) ... [2021-11-06 16:07:07,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 16:07:08,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 16:07:09,562 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2021-11-06 16:07:09,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:07:09,718 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 16:07:10,082 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2021-11-06 16:07:10,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:07:10,254 INFO L208 MainTranslator]: Completed translation [2021-11-06 16:07:10,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:07:10 WrapperNode [2021-11-06 16:07:10,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 16:07:10,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 16:07:10,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 16:07:10,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 16:07:10,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:07:10" (1/1) ... [2021-11-06 16:07:10,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:07:10" (1/1) ... [2021-11-06 16:07:10,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 16:07:10,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 16:07:10,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 16:07:10,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 16:07:10,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:07:10" (1/1) ... [2021-11-06 16:07:10,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:07:10" (1/1) ... [2021-11-06 16:07:10,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:07:10" (1/1) ... [2021-11-06 16:07:10,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:07:10" (1/1) ... [2021-11-06 16:07:11,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:07:10" (1/1) ... [2021-11-06 16:07:11,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:07:10" (1/1) ... [2021-11-06 16:07:11,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:07:10" (1/1) ... [2021-11-06 16:07:11,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 16:07:11,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 16:07:11,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 16:07:11,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 16:07:11,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:07:10" (1/1) ... [2021-11-06 16:07:11,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:07:11,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:07:11,177 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 16:07:11,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 16:07:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 16:07:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 16:07:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 16:07:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 16:07:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 16:07:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 16:07:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 16:07:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 16:07:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 16:07:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 16:07:11,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 16:07:11,207 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 16:07:45,925 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 16:07:45,926 INFO L299 CfgBuilder]: Removed 1850 assume(true) statements. [2021-11-06 16:07:45,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:07:45 BoogieIcfgContainer [2021-11-06 16:07:45,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 16:07:45,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 16:07:45,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 16:07:45,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 16:07:45,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 04:07:07" (1/3) ... [2021-11-06 16:07:45,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68be80ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:07:45, skipping insertion in model container [2021-11-06 16:07:45,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:07:10" (2/3) ... [2021-11-06 16:07:45,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68be80ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:07:45, skipping insertion in model container [2021-11-06 16:07:45,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:07:45" (3/3) ... [2021-11-06 16:07:45,938 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2021-11-06 16:07:45,942 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 16:07:45,943 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 53 error locations. [2021-11-06 16:07:46,001 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 16:07:46,006 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 16:07:46,007 INFO L340 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2021-11-06 16:07:46,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 1939 states, 1885 states have (on average 1.4482758620689655) internal successors, (2730), 1938 states have internal predecessors, (2730), 0 states have call successors, (0), 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 16:07:46,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-06 16:07:46,062 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:07:46,063 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] [2021-11-06 16:07:46,064 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 16:07:46,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:07:46,068 INFO L85 PathProgramCache]: Analyzing trace with hash 515534990, now seen corresponding path program 1 times [2021-11-06 16:07:46,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:07:46,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824032147] [2021-11-06 16:07:46,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:07:46,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:07:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:07:47,044 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 16:07:47,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:07:47,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824032147] [2021-11-06 16:07:47,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824032147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:07:47,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:07:47,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:07:47,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51087673] [2021-11-06 16:07:47,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 16:07:47,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:07:47,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 16:07:47,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 16:07:47,069 INFO L87 Difference]: Start difference. First operand has 1939 states, 1885 states have (on average 1.4482758620689655) internal successors, (2730), 1938 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 16:07:47,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:07:47,184 INFO L93 Difference]: Finished difference Result 3874 states and 5455 transitions. [2021-11-06 16:07:47,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 16:07:47,186 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-06 16:07:47,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:07:47,209 INFO L225 Difference]: With dead ends: 3874 [2021-11-06 16:07:47,210 INFO L226 Difference]: Without dead ends: 1915 [2021-11-06 16:07:47,217 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 16:07:47,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2021-11-06 16:07:47,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1915. [2021-11-06 16:07:47,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1915 states, 1862 states have (on average 1.3823845327604727) internal successors, (2574), 1914 states have internal predecessors, (2574), 0 states have call successors, (0), 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 16:07:47,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2574 transitions. [2021-11-06 16:07:47,324 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2574 transitions. Word has length 34 [2021-11-06 16:07:47,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:07:47,324 INFO L470 AbstractCegarLoop]: Abstraction has 1915 states and 2574 transitions. [2021-11-06 16:07:47,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 16:07:47,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2574 transitions. [2021-11-06 16:07:47,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-06 16:07:47,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:07:47,326 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] [2021-11-06 16:07:47,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 16:07:47,327 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 16:07:47,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:07:47,328 INFO L85 PathProgramCache]: Analyzing trace with hash -354019178, now seen corresponding path program 1 times [2021-11-06 16:07:47,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:07:47,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70648390] [2021-11-06 16:07:47,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:07:47,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:07:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:07:47,896 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 16:07:47,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:07:47,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70648390] [2021-11-06 16:07:47,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70648390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:07:47,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:07:47,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:07:47,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052327056] [2021-11-06 16:07:47,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:07:47,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:07:47,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:07:47,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:07:47,899 INFO L87 Difference]: Start difference. First operand 1915 states and 2574 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 16:07:50,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:07:50,306 INFO L93 Difference]: Finished difference Result 5671 states and 7645 transitions. [2021-11-06 16:07:50,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:07:50,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-06 16:07:50,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:07:50,322 INFO L225 Difference]: With dead ends: 5671 [2021-11-06 16:07:50,322 INFO L226 Difference]: Without dead ends: 3776 [2021-11-06 16:07:50,327 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 16:07:50,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-11-06 16:07:50,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3672. [2021-11-06 16:07:50,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3672 states, 3619 states have (on average 1.3915446255871788) internal successors, (5036), 3671 states have internal predecessors, (5036), 0 states have call successors, (0), 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 16:07:50,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 5036 transitions. [2021-11-06 16:07:50,419 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 5036 transitions. Word has length 34 [2021-11-06 16:07:50,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:07:50,420 INFO L470 AbstractCegarLoop]: Abstraction has 3672 states and 5036 transitions. [2021-11-06 16:07:50,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 16:07:50,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 5036 transitions. [2021-11-06 16:07:50,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 16:07:50,422 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:07:50,423 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] [2021-11-06 16:07:50,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 16:07:50,423 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 16:07:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:07:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash -199593292, now seen corresponding path program 1 times [2021-11-06 16:07:50,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:07:50,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433400696] [2021-11-06 16:07:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:07:50,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:07:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:07:50,936 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 16:07:50,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:07:50,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433400696] [2021-11-06 16:07:50,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433400696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:07:50,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:07:50,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:07:50,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184502716] [2021-11-06 16:07:50,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:07:50,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:07:50,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:07:50,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:07:50,939 INFO L87 Difference]: Start difference. First operand 3672 states and 5036 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 16:07:53,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:07:53,216 INFO L93 Difference]: Finished difference Result 10870 states and 14963 transitions. [2021-11-06 16:07:53,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:07:53,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-11-06 16:07:53,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:07:53,247 INFO L225 Difference]: With dead ends: 10870 [2021-11-06 16:07:53,247 INFO L226 Difference]: Without dead ends: 7216 [2021-11-06 16:07:53,256 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 16:07:53,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7216 states. [2021-11-06 16:07:53,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7216 to 7060. [2021-11-06 16:07:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7060 states, 7007 states have (on average 1.3891822463251036) internal successors, (9734), 7059 states have internal predecessors, (9734), 0 states have call successors, (0), 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 16:07:53,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7060 states to 7060 states and 9734 transitions. [2021-11-06 16:07:53,432 INFO L78 Accepts]: Start accepts. Automaton has 7060 states and 9734 transitions. Word has length 40 [2021-11-06 16:07:53,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:07:53,433 INFO L470 AbstractCegarLoop]: Abstraction has 7060 states and 9734 transitions. [2021-11-06 16:07:53,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 16:07:53,433 INFO L276 IsEmpty]: Start isEmpty. Operand 7060 states and 9734 transitions. [2021-11-06 16:07:53,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-06 16:07:53,438 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:07:53,439 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, 1, 1, 1, 1, 1] [2021-11-06 16:07:53,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 16:07:53,440 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 16:07:53,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:07:53,441 INFO L85 PathProgramCache]: Analyzing trace with hash -518682485, now seen corresponding path program 1 times [2021-11-06 16:07:53,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:07:53,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615103115] [2021-11-06 16:07:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:07:53,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:07:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:07:53,974 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 16:07:53,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:07:53,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615103115] [2021-11-06 16:07:53,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615103115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:07:53,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:07:53,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:07:53,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197636639] [2021-11-06 16:07:53,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:07:53,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:07:53,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:07:53,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:07:53,976 INFO L87 Difference]: Start difference. First operand 7060 states and 9734 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:07:54,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:07:54,508 INFO L93 Difference]: Finished difference Result 20449 states and 28105 transitions. [2021-11-06 16:07:54,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:07:54,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-06 16:07:54,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:07:54,587 INFO L225 Difference]: With dead ends: 20449 [2021-11-06 16:07:54,587 INFO L226 Difference]: Without dead ends: 13409 [2021-11-06 16:07:54,605 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 16:07:54,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13409 states. [2021-11-06 16:07:54,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13409 to 13216. [2021-11-06 16:07:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13216 states, 13163 states have (on average 1.3860062295829219) internal successors, (18244), 13215 states have internal predecessors, (18244), 0 states have call successors, (0), 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 16:07:54,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13216 states to 13216 states and 18244 transitions. [2021-11-06 16:07:54,994 INFO L78 Accepts]: Start accepts. Automaton has 13216 states and 18244 transitions. Word has length 50 [2021-11-06 16:07:54,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:07:54,996 INFO L470 AbstractCegarLoop]: Abstraction has 13216 states and 18244 transitions. [2021-11-06 16:07:54,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:07:54,997 INFO L276 IsEmpty]: Start isEmpty. Operand 13216 states and 18244 transitions. [2021-11-06 16:07:54,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 16:07:54,999 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:07:54,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:07:54,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 16:07:54,999 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 16:07:55,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:07:55,000 INFO L85 PathProgramCache]: Analyzing trace with hash -320551080, now seen corresponding path program 1 times [2021-11-06 16:07:55,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:07:55,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949132025] [2021-11-06 16:07:55,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:07:55,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:07:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:07:55,463 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 16:07:55,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:07:55,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949132025] [2021-11-06 16:07:55,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949132025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:07:55,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:07:55,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:07:55,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396391543] [2021-11-06 16:07:55,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:07:55,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:07:55,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:07:55,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:07:55,465 INFO L87 Difference]: Start difference. First operand 13216 states and 18244 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 16:07:56,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:07:56,211 INFO L93 Difference]: Finished difference Result 38231 states and 52583 transitions. [2021-11-06 16:07:56,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:07:56,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-06 16:07:56,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:07:56,280 INFO L225 Difference]: With dead ends: 38231 [2021-11-06 16:07:56,280 INFO L226 Difference]: Without dead ends: 25035 [2021-11-06 16:07:56,311 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 16:07:56,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25035 states. [2021-11-06 16:07:56,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25035 to 24852. [2021-11-06 16:07:56,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24852 states, 24799 states have (on average 1.37981370216541) internal successors, (34218), 24851 states have internal predecessors, (34218), 0 states have call successors, (0), 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 16:07:56,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24852 states to 24852 states and 34218 transitions. [2021-11-06 16:07:56,852 INFO L78 Accepts]: Start accepts. Automaton has 24852 states and 34218 transitions. Word has length 62 [2021-11-06 16:07:56,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:07:56,853 INFO L470 AbstractCegarLoop]: Abstraction has 24852 states and 34218 transitions. [2021-11-06 16:07:56,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 16:07:56,854 INFO L276 IsEmpty]: Start isEmpty. Operand 24852 states and 34218 transitions. [2021-11-06 16:07:56,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 16:07:56,856 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:07:56,857 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, 1, 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 16:07:56,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 16:07:56,857 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 16:07:56,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:07:56,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1126343220, now seen corresponding path program 1 times [2021-11-06 16:07:56,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:07:56,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994912587] [2021-11-06 16:07:56,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:07:56,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:07:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:07:57,287 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 16:07:57,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:07:57,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994912587] [2021-11-06 16:07:57,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994912587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:07:57,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:07:57,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:07:57,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088085181] [2021-11-06 16:07:57,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:07:57,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:07:57,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:07:57,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:07:57,289 INFO L87 Difference]: Start difference. First operand 24852 states and 34218 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:07:58,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:07:58,019 INFO L93 Difference]: Finished difference Result 59410 states and 81429 transitions. [2021-11-06 16:07:58,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:07:58,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-06 16:07:58,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:07:58,102 INFO L225 Difference]: With dead ends: 59410 [2021-11-06 16:07:58,102 INFO L226 Difference]: Without dead ends: 34578 [2021-11-06 16:07:58,151 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 16:07:58,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34578 states. [2021-11-06 16:07:58,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34578 to 34532. [2021-11-06 16:07:58,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34532 states, 34479 states have (on average 1.368079120624148) internal successors, (47170), 34531 states have internal predecessors, (47170), 0 states have call successors, (0), 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 16:07:58,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34532 states to 34532 states and 47170 transitions. [2021-11-06 16:07:58,989 INFO L78 Accepts]: Start accepts. Automaton has 34532 states and 47170 transitions. Word has length 70 [2021-11-06 16:07:58,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:07:58,989 INFO L470 AbstractCegarLoop]: Abstraction has 34532 states and 47170 transitions. [2021-11-06 16:07:58,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:07:58,990 INFO L276 IsEmpty]: Start isEmpty. Operand 34532 states and 47170 transitions. [2021-11-06 16:07:58,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 16:07:58,993 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:07:58,994 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:07:58,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 16:07:58,994 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 16:07:58,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:07:58,995 INFO L85 PathProgramCache]: Analyzing trace with hash 742851849, now seen corresponding path program 1 times [2021-11-06 16:07:58,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:07:58,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052013411] [2021-11-06 16:07:58,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:07:58,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:07:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:07:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:07:59,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:07:59,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052013411] [2021-11-06 16:07:59,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052013411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:07:59,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:07:59,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:07:59,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578221468] [2021-11-06 16:07:59,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:07:59,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:07:59,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:07:59,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:07:59,510 INFO L87 Difference]: Start difference. First operand 34532 states and 47170 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 16:08:02,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:08:02,641 INFO L93 Difference]: Finished difference Result 85229 states and 116235 transitions. [2021-11-06 16:08:02,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:08:02,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-11-06 16:08:02,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:08:02,777 INFO L225 Difference]: With dead ends: 85229 [2021-11-06 16:08:02,777 INFO L226 Difference]: Without dead ends: 50717 [2021-11-06 16:08:02,828 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 16:08:02,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50717 states. [2021-11-06 16:08:03,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50717 to 50524. [2021-11-06 16:08:03,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50524 states, 50471 states have (on average 1.3637534425709814) internal successors, (68830), 50523 states have internal predecessors, (68830), 0 states have call successors, (0), 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 16:08:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50524 states to 50524 states and 68830 transitions. [2021-11-06 16:08:04,012 INFO L78 Accepts]: Start accepts. Automaton has 50524 states and 68830 transitions. Word has length 89 [2021-11-06 16:08:04,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:08:04,013 INFO L470 AbstractCegarLoop]: Abstraction has 50524 states and 68830 transitions. [2021-11-06 16:08:04,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 16:08:04,013 INFO L276 IsEmpty]: Start isEmpty. Operand 50524 states and 68830 transitions. [2021-11-06 16:08:04,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 16:08:04,028 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:08:04,028 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:08:04,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 16:08:04,029 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 16:08:04,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:08:04,030 INFO L85 PathProgramCache]: Analyzing trace with hash -767985962, now seen corresponding path program 1 times [2021-11-06 16:08:04,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:08:04,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254951278] [2021-11-06 16:08:04,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:08:04,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:08:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:08:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:08:04,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:08:04,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254951278] [2021-11-06 16:08:04,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254951278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:08:04,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:08:04,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:08:04,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921051338] [2021-11-06 16:08:04,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:08:04,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:08:04,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:08:04,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:08:04,610 INFO L87 Difference]: Start difference. First operand 50524 states and 68830 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 16:08:07,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:08:07,904 INFO L93 Difference]: Finished difference Result 124619 states and 169513 transitions. [2021-11-06 16:08:07,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:08:07,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-06 16:08:07,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:08:08,081 INFO L225 Difference]: With dead ends: 124619 [2021-11-06 16:08:08,081 INFO L226 Difference]: Without dead ends: 74115 [2021-11-06 16:08:08,164 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 16:08:08,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74115 states. [2021-11-06 16:08:09,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74115 to 73932. [2021-11-06 16:08:09,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73932 states, 73879 states have (on average 1.3590059421486484) internal successors, (100402), 73931 states have internal predecessors, (100402), 0 states have call successors, (0), 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 16:08:09,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73932 states to 73932 states and 100402 transitions. [2021-11-06 16:08:09,482 INFO L78 Accepts]: Start accepts. Automaton has 73932 states and 100402 transitions. Word has length 101 [2021-11-06 16:08:09,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:08:09,483 INFO L470 AbstractCegarLoop]: Abstraction has 73932 states and 100402 transitions. [2021-11-06 16:08:09,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 16:08:09,483 INFO L276 IsEmpty]: Start isEmpty. Operand 73932 states and 100402 transitions. [2021-11-06 16:08:09,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 16:08:09,490 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:08:09,490 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:08:09,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 16:08:09,491 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 16:08:09,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:08:09,491 INFO L85 PathProgramCache]: Analyzing trace with hash -42916485, now seen corresponding path program 1 times [2021-11-06 16:08:09,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:08:09,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865972476] [2021-11-06 16:08:09,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:08:09,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:08:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:08:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 16:08:10,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:08:10,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865972476] [2021-11-06 16:08:10,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865972476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:08:10,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:08:10,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 16:08:10,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180172873] [2021-11-06 16:08:10,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 16:08:10,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:08:10,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 16:08:10,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:08:10,798 INFO L87 Difference]: Start difference. First operand 73932 states and 100402 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 16:08:16,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:08:16,647 INFO L93 Difference]: Finished difference Result 268198 states and 363534 transitions. [2021-11-06 16:08:16,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 16:08:16,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 104 [2021-11-06 16:08:16,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:08:17,105 INFO L225 Difference]: With dead ends: 268198 [2021-11-06 16:08:17,106 INFO L226 Difference]: Without dead ends: 194286 [2021-11-06 16:08:17,216 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 16:08:17,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194286 states. [2021-11-06 16:08:19,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194286 to 74076. [2021-11-06 16:08:19,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74076 states, 74023 states have (on average 1.3586317766099725) internal successors, (100570), 74075 states have internal predecessors, (100570), 0 states have call successors, (0), 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 16:08:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74076 states to 74076 states and 100570 transitions. [2021-11-06 16:08:20,048 INFO L78 Accepts]: Start accepts. Automaton has 74076 states and 100570 transitions. Word has length 104 [2021-11-06 16:08:20,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:08:20,048 INFO L470 AbstractCegarLoop]: Abstraction has 74076 states and 100570 transitions. [2021-11-06 16:08:20,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 16:08:20,049 INFO L276 IsEmpty]: Start isEmpty. Operand 74076 states and 100570 transitions. [2021-11-06 16:08:20,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-06 16:08:20,056 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:08:20,056 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 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 16:08:20,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 16:08:20,057 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 16:08:20,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:08:20,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1443296178, now seen corresponding path program 1 times [2021-11-06 16:08:20,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:08:20,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509075237] [2021-11-06 16:08:20,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:08:20,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:08:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:08:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 16:08:21,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:08:21,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509075237] [2021-11-06 16:08:21,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509075237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:08:21,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:08:21,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:08:21,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723002523] [2021-11-06 16:08:21,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:08:21,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:08:21,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:08:21,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:08:21,128 INFO L87 Difference]: Start difference. First operand 74076 states and 100570 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 16:08:22,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:08:22,347 INFO L93 Difference]: Finished difference Result 116233 states and 156148 transitions. [2021-11-06 16:08:22,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:08:22,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 109 [2021-11-06 16:08:22,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:08:22,418 INFO L225 Difference]: With dead ends: 116233 [2021-11-06 16:08:22,418 INFO L226 Difference]: Without dead ends: 42177 [2021-11-06 16:08:22,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 16:08:22,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42177 states. [2021-11-06 16:08:23,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42177 to 42177. [2021-11-06 16:08:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42177 states, 42173 states have (on average 1.3174780072558272) internal successors, (55562), 42176 states have internal predecessors, (55562), 0 states have call successors, (0), 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 16:08:23,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42177 states to 42177 states and 55562 transitions. [2021-11-06 16:08:23,435 INFO L78 Accepts]: Start accepts. Automaton has 42177 states and 55562 transitions. Word has length 109 [2021-11-06 16:08:23,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:08:23,435 INFO L470 AbstractCegarLoop]: Abstraction has 42177 states and 55562 transitions. [2021-11-06 16:08:23,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 16:08:23,435 INFO L276 IsEmpty]: Start isEmpty. Operand 42177 states and 55562 transitions. [2021-11-06 16:08:23,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-06 16:08:23,443 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:08:23,443 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:08:23,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 16:08:23,444 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 16:08:23,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:08:23,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2039274847, now seen corresponding path program 1 times [2021-11-06 16:08:23,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:08:23,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105063198] [2021-11-06 16:08:23,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:08:23,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:08:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:08:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 16:08:23,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:08:23,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105063198] [2021-11-06 16:08:23,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105063198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:08:23,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:08:23,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:08:23,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437995847] [2021-11-06 16:08:23,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:08:23,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:08:23,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:08:23,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:08:23,841 INFO L87 Difference]: Start difference. First operand 42177 states and 55562 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 16:08:24,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:08:24,699 INFO L93 Difference]: Finished difference Result 84370 states and 111176 transitions. [2021-11-06 16:08:24,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:08:24,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 115 [2021-11-06 16:08:24,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:08:24,764 INFO L225 Difference]: With dead ends: 84370 [2021-11-06 16:08:24,764 INFO L226 Difference]: Without dead ends: 42213 [2021-11-06 16:08:24,816 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 16:08:24,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42213 states. [2021-11-06 16:08:25,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42213 to 42213. [2021-11-06 16:08:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42213 states, 42209 states have (on average 1.3172072306853988) internal successors, (55598), 42212 states have internal predecessors, (55598), 0 states have call successors, (0), 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 16:08:25,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42213 states to 42213 states and 55598 transitions. [2021-11-06 16:08:25,834 INFO L78 Accepts]: Start accepts. Automaton has 42213 states and 55598 transitions. Word has length 115 [2021-11-06 16:08:25,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:08:25,835 INFO L470 AbstractCegarLoop]: Abstraction has 42213 states and 55598 transitions. [2021-11-06 16:08:25,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 16:08:25,835 INFO L276 IsEmpty]: Start isEmpty. Operand 42213 states and 55598 transitions. [2021-11-06 16:08:25,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-06 16:08:25,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:08:25,842 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:08:25,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 16:08:25,843 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 16:08:25,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:08:25,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1438043999, now seen corresponding path program 1 times [2021-11-06 16:08:25,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:08:25,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43256782] [2021-11-06 16:08:25,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:08:25,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:08:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:08:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 16:08:26,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:08:26,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43256782] [2021-11-06 16:08:26,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43256782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:08:26,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:08:26,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:08:26,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419692934] [2021-11-06 16:08:26,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:08:26,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:08:26,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:08:26,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:08:26,862 INFO L87 Difference]: Start difference. First operand 42213 states and 55598 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 16:08:27,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:08:27,932 INFO L93 Difference]: Finished difference Result 84730 states and 111824 transitions. [2021-11-06 16:08:27,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:08:27,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 115 [2021-11-06 16:08:27,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:08:28,020 INFO L225 Difference]: With dead ends: 84730 [2021-11-06 16:08:28,020 INFO L226 Difference]: Without dead ends: 42537 [2021-11-06 16:08:28,079 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 16:08:28,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42537 states. [2021-11-06 16:08:29,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42537 to 42537. [2021-11-06 16:08:29,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42537 states, 42533 states have (on average 1.3147908682669927) internal successors, (55922), 42536 states have internal predecessors, (55922), 0 states have call successors, (0), 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 16:08:29,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42537 states to 42537 states and 55922 transitions. [2021-11-06 16:08:29,249 INFO L78 Accepts]: Start accepts. Automaton has 42537 states and 55922 transitions. Word has length 115 [2021-11-06 16:08:29,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:08:29,249 INFO L470 AbstractCegarLoop]: Abstraction has 42537 states and 55922 transitions. [2021-11-06 16:08:29,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 16:08:29,250 INFO L276 IsEmpty]: Start isEmpty. Operand 42537 states and 55922 transitions. [2021-11-06 16:08:29,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-06 16:08:29,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:08:29,255 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:08:29,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 16:08:29,256 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 16:08:29,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:08:29,256 INFO L85 PathProgramCache]: Analyzing trace with hash -622424135, now seen corresponding path program 1 times [2021-11-06 16:08:29,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:08:29,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812498815] [2021-11-06 16:08:29,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:08:29,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:08:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:08:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 16:08:31,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:08:31,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812498815] [2021-11-06 16:08:31,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812498815] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:08:31,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717083584] [2021-11-06 16:08:31,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:08:31,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:08:31,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:08:31,479 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 16:08:31,511 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 16:08:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:08:33,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 6880 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 16:08:33,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:08:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 16:08:34,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717083584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:08:34,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:08:34,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-06 16:08:34,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527703466] [2021-11-06 16:08:34,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 16:08:34,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:08:34,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 16:08:34,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 16:08:34,226 INFO L87 Difference]: Start difference. First operand 42537 states and 55922 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 16:08:37,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:08:37,225 INFO L93 Difference]: Finished difference Result 64556 states and 84902 transitions. [2021-11-06 16:08:37,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 16:08:37,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-06 16:08:37,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:08:37,266 INFO L225 Difference]: With dead ends: 64556 [2021-11-06 16:08:37,266 INFO L226 Difference]: Without dead ends: 21949 [2021-11-06 16:08:37,313 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-06 16:08:37,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21949 states. [2021-11-06 16:08:37,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21949 to 21619. [2021-11-06 16:08:37,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21619 states, 21615 states have (on average 1.3141337034466805) internal successors, (28405), 21618 states have internal predecessors, (28405), 0 states have call successors, (0), 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 16:08:37,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21619 states to 21619 states and 28405 transitions. [2021-11-06 16:08:37,856 INFO L78 Accepts]: Start accepts. Automaton has 21619 states and 28405 transitions. Word has length 116 [2021-11-06 16:08:37,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:08:37,857 INFO L470 AbstractCegarLoop]: Abstraction has 21619 states and 28405 transitions. [2021-11-06 16:08:37,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 16:08:37,857 INFO L276 IsEmpty]: Start isEmpty. Operand 21619 states and 28405 transitions. [2021-11-06 16:08:37,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-06 16:08:37,861 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:08:37,861 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:08:37,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 16:08:38,075 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 16:08:38,076 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 16:08:38,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:08:38,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1285660820, now seen corresponding path program 1 times [2021-11-06 16:08:38,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:08:38,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613754535] [2021-11-06 16:08:38,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:08:38,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:08:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:08:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 16:08:40,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:08:40,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613754535] [2021-11-06 16:08:40,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613754535] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:08:40,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768705537] [2021-11-06 16:08:40,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:08:40,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:08:40,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:08:40,124 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 16:08:40,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process