./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-43_2a-drivers--isdn--gigaset--bas_gigaset.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-43_2a-drivers--isdn--gigaset--bas_gigaset.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 4b829e0b1083ca135908ac8582697cf0831b43587b46e1b9cc42429c7a2c7866 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:09:36,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:09:36,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:09:36,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:09:36,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:09:36,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:09:36,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:09:36,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:09:36,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:09:36,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:09:36,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:09:36,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:09:36,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:09:36,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:09:36,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:09:36,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:09:36,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:09:36,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:09:36,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:09:36,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:09:36,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:09:36,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:09:36,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:09:36,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:09:36,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:09:36,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:09:36,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:09:36,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:09:36,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:09:36,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:09:36,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:09:36,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:09:36,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:09:36,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:09:36,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:09:36,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:09:36,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:09:36,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:09:36,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:09:36,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:09:36,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:09:36,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:09:36,627 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:09:36,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:09:36,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:09:36,630 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:09:36,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:09:36,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:09:36,632 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:09:36,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:09:36,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:09:36,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:09:36,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:09:36,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:09:36,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:09:36,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:09:36,634 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:09:36,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:09:36,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:09:36,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:09:36,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:09:36,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:09:36,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:09:36,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:09:36,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:09:36,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:09:36,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:09:36,636 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:09:36,636 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:09:36,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:09:36,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:09:36,638 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b829e0b1083ca135908ac8582697cf0831b43587b46e1b9cc42429c7a2c7866 [2021-11-06 17:09:36,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:09:36,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:09:36,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:09:36,842 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:09:36,843 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:09:36,844 INFO L432 ainManager$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-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-06 17:09:36,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/171f049ee/0c6f44aeaaee4407822bab4868abca8b/FLAGed1d4fb59 [2021-11-06 17:09:37,548 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:09:37,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-06 17:09:37,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/171f049ee/0c6f44aeaaee4407822bab4868abca8b/FLAGed1d4fb59 [2021-11-06 17:09:37,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/171f049ee/0c6f44aeaaee4407822bab4868abca8b [2021-11-06 17:09:37,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:09:37,873 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:09:37,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:09:37,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:09:37,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:09:37,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:09:37" (1/1) ... [2021-11-06 17:09:37,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3622f751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:09:37, skipping insertion in model container [2021-11-06 17:09:37,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:09:37" (1/1) ... [2021-11-06 17:09:37,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:09:37,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:09:39,595 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-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[378939,378952] [2021-11-06 17:09:39,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:09:39,698 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:09:40,113 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-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[378939,378952] [2021-11-06 17:09:40,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:09:40,285 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:09:40,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:09:40 WrapperNode [2021-11-06 17:09:40,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:09:40,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:09:40,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:09:40,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:09:40,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:09:40" (1/1) ... [2021-11-06 17:09:40,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:09:40" (1/1) ... [2021-11-06 17:09:40,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:09:40,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:09:40,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:09:40,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:09:40,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:09:40" (1/1) ... [2021-11-06 17:09:40,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:09:40" (1/1) ... [2021-11-06 17:09:41,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:09:40" (1/1) ... [2021-11-06 17:09:41,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:09:40" (1/1) ... [2021-11-06 17:09:41,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:09:40" (1/1) ... [2021-11-06 17:09:41,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:09:40" (1/1) ... [2021-11-06 17:09:41,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:09:40" (1/1) ... [2021-11-06 17:09:41,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:09:41,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:09:41,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:09:41,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:09:41,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:09:40" (1/1) ... [2021-11-06 17:09:41,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:09:41,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:09:41,945 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 17:09:41,976 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 17:09:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:09:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 17:09:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:09:42,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:09:42,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:09:42,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:09:42,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:09:42,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:09:42,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:09:42,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:09:42,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:09:42,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:10:56,548 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:10:56,549 INFO L299 CfgBuilder]: Removed 5499 assume(true) statements. [2021-11-06 17:10:56,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:10:56 BoogieIcfgContainer [2021-11-06 17:10:56,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:10:56,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:10:56,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:10:56,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:10:56,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:09:37" (1/3) ... [2021-11-06 17:10:56,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75530711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:10:56, skipping insertion in model container [2021-11-06 17:10:56,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:09:40" (2/3) ... [2021-11-06 17:10:56,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75530711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:10:56, skipping insertion in model container [2021-11-06 17:10:56,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:10:56" (3/3) ... [2021-11-06 17:10:56,562 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-06 17:10:56,566 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:10:56,566 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 75 error locations. [2021-11-06 17:10:56,615 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:10:56,619 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 17:10:56,619 INFO L340 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2021-11-06 17:10:56,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 5564 states, 5488 states have (on average 1.5369897959183674) internal successors, (8435), 5563 states have internal predecessors, (8435), 0 states have call successors, (0), 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 17:10:56,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-06 17:10:56,695 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:10:56,696 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] [2021-11-06 17:10:56,696 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 72 more)] === [2021-11-06 17:10:56,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:10:56,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2137541953, now seen corresponding path program 1 times [2021-11-06 17:10:56,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:10:56,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53821797] [2021-11-06 17:10:56,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:10:56,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:10:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:10:57,429 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 17:10:57,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:10:57,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53821797] [2021-11-06 17:10:57,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53821797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:10:57,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:10:57,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:10:57,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411815339] [2021-11-06 17:10:57,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:10:57,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:10:57,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:10:57,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:10:57,461 INFO L87 Difference]: Start difference. First operand has 5564 states, 5488 states have (on average 1.5369897959183674) internal successors, (8435), 5563 states have internal predecessors, (8435), 0 states have call successors, (0), 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 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 17:10:57,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:10:57,615 INFO L93 Difference]: Finished difference Result 11124 states and 16865 transitions. [2021-11-06 17:10:57,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:10:57,617 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-06 17:10:57,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:10:57,649 INFO L225 Difference]: With dead ends: 11124 [2021-11-06 17:10:57,650 INFO L226 Difference]: Without dead ends: 5519 [2021-11-06 17:10:57,664 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 17:10:57,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2021-11-06 17:10:57,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5519. [2021-11-06 17:10:57,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5519 states, 5444 states have (on average 1.5165319617927995) internal successors, (8256), 5518 states have internal predecessors, (8256), 0 states have call successors, (0), 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 17:10:57,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5519 states to 5519 states and 8256 transitions. [2021-11-06 17:10:57,836 INFO L78 Accepts]: Start accepts. Automaton has 5519 states and 8256 transitions. Word has length 55 [2021-11-06 17:10:57,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:10:57,836 INFO L470 AbstractCegarLoop]: Abstraction has 5519 states and 8256 transitions. [2021-11-06 17:10:57,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 17:10:57,837 INFO L276 IsEmpty]: Start isEmpty. Operand 5519 states and 8256 transitions. [2021-11-06 17:10:57,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-06 17:10:57,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:10:57,843 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] [2021-11-06 17:10:57,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:10:57,846 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 72 more)] === [2021-11-06 17:10:57,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:10:57,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1819365493, now seen corresponding path program 1 times [2021-11-06 17:10:57,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:10:57,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428552992] [2021-11-06 17:10:57,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:10:57,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:10:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:10:58,287 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 17:10:58,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:10:58,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428552992] [2021-11-06 17:10:58,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428552992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:10:58,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:10:58,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:10:58,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293927067] [2021-11-06 17:10:58,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:10:58,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:10:58,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:10:58,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:10:58,289 INFO L87 Difference]: Start difference. First operand 5519 states and 8256 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 17:10:58,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:10:58,776 INFO L93 Difference]: Finished difference Result 15849 states and 23790 transitions. [2021-11-06 17:10:58,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:10:58,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-06 17:10:58,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:10:58,810 INFO L225 Difference]: With dead ends: 15849 [2021-11-06 17:10:58,810 INFO L226 Difference]: Without dead ends: 10373 [2021-11-06 17:10:58,821 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 17:10:58,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10373 states. [2021-11-06 17:10:58,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10373 to 10244. [2021-11-06 17:10:58,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10244 states, 10169 states have (on average 1.5258137476644704) internal successors, (15516), 10243 states have internal predecessors, (15516), 0 states have call successors, (0), 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 17:10:58,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10244 states to 10244 states and 15516 transitions. [2021-11-06 17:10:58,999 INFO L78 Accepts]: Start accepts. Automaton has 10244 states and 15516 transitions. Word has length 55 [2021-11-06 17:10:58,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:10:58,999 INFO L470 AbstractCegarLoop]: Abstraction has 10244 states and 15516 transitions. [2021-11-06 17:10:58,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 17:10:58,999 INFO L276 IsEmpty]: Start isEmpty. Operand 10244 states and 15516 transitions. [2021-11-06 17:10:59,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-06 17:10:59,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:10:59,001 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] [2021-11-06 17:10:59,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:10:59,001 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 72 more)] === [2021-11-06 17:10:59,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:10:59,002 INFO L85 PathProgramCache]: Analyzing trace with hash 594655934, now seen corresponding path program 1 times [2021-11-06 17:10:59,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:10:59,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864864491] [2021-11-06 17:10:59,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:10:59,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:10:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:10:59,282 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 17:10:59,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:10:59,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864864491] [2021-11-06 17:10:59,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864864491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:10:59,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:10:59,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:10:59,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438153463] [2021-11-06 17:10:59,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:10:59,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:10:59,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:10:59,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:10:59,284 INFO L87 Difference]: Start difference. First operand 10244 states and 15516 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 17:11:00,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:11:00,217 INFO L93 Difference]: Finished difference Result 27456 states and 41712 transitions. [2021-11-06 17:11:00,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:11:00,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-06 17:11:00,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:11:00,271 INFO L225 Difference]: With dead ends: 27456 [2021-11-06 17:11:00,272 INFO L226 Difference]: Without dead ends: 17255 [2021-11-06 17:11:00,291 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:11:00,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17255 states. [2021-11-06 17:11:00,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17255 to 17145. [2021-11-06 17:11:00,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17145 states, 17070 states have (on average 1.5340949033391915) internal successors, (26187), 17144 states have internal predecessors, (26187), 0 states have call successors, (0), 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 17:11:00,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17145 states to 17145 states and 26187 transitions. [2021-11-06 17:11:00,609 INFO L78 Accepts]: Start accepts. Automaton has 17145 states and 26187 transitions. Word has length 56 [2021-11-06 17:11:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:11:00,610 INFO L470 AbstractCegarLoop]: Abstraction has 17145 states and 26187 transitions. [2021-11-06 17:11:00,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 17:11:00,611 INFO L276 IsEmpty]: Start isEmpty. Operand 17145 states and 26187 transitions. [2021-11-06 17:11:00,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-06 17:11:00,612 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:11:00,612 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] [2021-11-06 17:11:00,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:11:00,613 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 72 more)] === [2021-11-06 17:11:00,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:11:00,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1270792788, now seen corresponding path program 1 times [2021-11-06 17:11:00,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:11:00,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088446765] [2021-11-06 17:11:00,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:11:00,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:11:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:11:01,145 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 17:11:01,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:11:01,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088446765] [2021-11-06 17:11:01,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088446765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:11:01,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:11:01,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:11:01,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282842912] [2021-11-06 17:11:01,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:11:01,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:11:01,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:11:01,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:11:01,146 INFO L87 Difference]: Start difference. First operand 17145 states and 26187 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 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 17:11:03,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:11:03,351 INFO L93 Difference]: Finished difference Result 17275 states and 26371 transitions. [2021-11-06 17:11:03,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:11:03,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-06 17:11:03,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:11:03,388 INFO L225 Difference]: With dead ends: 17275 [2021-11-06 17:11:03,389 INFO L226 Difference]: Without dead ends: 17205 [2021-11-06 17:11:03,395 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 17:11:03,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17205 states. [2021-11-06 17:11:03,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17205 to 17075. [2021-11-06 17:11:03,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17075 states, 17035 states have (on average 1.5292045788083357) internal successors, (26050), 17074 states have internal predecessors, (26050), 0 states have call successors, (0), 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 17:11:03,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17075 states to 17075 states and 26050 transitions. [2021-11-06 17:11:03,700 INFO L78 Accepts]: Start accepts. Automaton has 17075 states and 26050 transitions. Word has length 58 [2021-11-06 17:11:03,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:11:03,702 INFO L470 AbstractCegarLoop]: Abstraction has 17075 states and 26050 transitions. [2021-11-06 17:11:03,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 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 17:11:03,702 INFO L276 IsEmpty]: Start isEmpty. Operand 17075 states and 26050 transitions. [2021-11-06 17:11:03,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 17:11:03,707 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:11:03,707 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] [2021-11-06 17:11:03,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:11:03,707 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 72 more)] === [2021-11-06 17:11:03,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:11:03,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1384221329, now seen corresponding path program 1 times [2021-11-06 17:11:03,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:11:03,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332196497] [2021-11-06 17:11:03,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:11:03,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:11:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:11:04,170 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 17:11:04,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:11:04,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332196497] [2021-11-06 17:11:04,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332196497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:11:04,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:11:04,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 17:11:04,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490635483] [2021-11-06 17:11:04,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:11:04,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:11:04,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:11:04,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:11:04,172 INFO L87 Difference]: Start difference. First operand 17075 states and 26050 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 17:11:11,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:11:11,489 INFO L93 Difference]: Finished difference Result 82597 states and 125619 transitions. [2021-11-06 17:11:11,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:11:11,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-06 17:11:11,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:11:11,645 INFO L225 Difference]: With dead ends: 82597 [2021-11-06 17:11:11,645 INFO L226 Difference]: Without dead ends: 65565 [2021-11-06 17:11:11,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:11:11,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65565 states. [2021-11-06 17:11:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65565 to 65159. [2021-11-06 17:11:12,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65159 states, 65119 states have (on average 1.5185736881708871) internal successors, (98888), 65158 states have internal predecessors, (98888), 0 states have call successors, (0), 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 17:11:12,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65159 states to 65159 states and 98888 transitions. [2021-11-06 17:11:12,972 INFO L78 Accepts]: Start accepts. Automaton has 65159 states and 98888 transitions. Word has length 67 [2021-11-06 17:11:12,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:11:12,973 INFO L470 AbstractCegarLoop]: Abstraction has 65159 states and 98888 transitions. [2021-11-06 17:11:12,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 17:11:12,973 INFO L276 IsEmpty]: Start isEmpty. Operand 65159 states and 98888 transitions. [2021-11-06 17:11:12,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 17:11:12,978 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:11:12,978 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] [2021-11-06 17:11:12,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 17:11:12,978 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 72 more)] === [2021-11-06 17:11:12,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:11:12,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1885081138, now seen corresponding path program 1 times [2021-11-06 17:11:12,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:11:12,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496733667] [2021-11-06 17:11:12,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:11:12,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:11:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:11:13,665 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 17:11:13,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:11:13,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496733667] [2021-11-06 17:11:13,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496733667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:11:13,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:11:13,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 17:11:13,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870442594] [2021-11-06 17:11:13,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:11:13,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:11:13,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:11:13,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:11:13,667 INFO L87 Difference]: Start difference. First operand 65159 states and 98888 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:11:26,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:11:26,333 INFO L93 Difference]: Finished difference Result 318125 states and 482337 transitions. [2021-11-06 17:11:26,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:11:26,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-06 17:11:26,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:11:27,118 INFO L225 Difference]: With dead ends: 318125 [2021-11-06 17:11:27,119 INFO L226 Difference]: Without dead ends: 253009 [2021-11-06 17:11:27,238 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:11:27,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253009 states. [2021-11-06 17:11:32,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253009 to 252435. [2021-11-06 17:11:32,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252435 states, 252395 states have (on average 1.5134214227698648) internal successors, (381980), 252434 states have internal predecessors, (381980), 0 states have call successors, (0), 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 17:11:33,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252435 states to 252435 states and 381980 transitions. [2021-11-06 17:11:33,812 INFO L78 Accepts]: Start accepts. Automaton has 252435 states and 381980 transitions. Word has length 68 [2021-11-06 17:11:33,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:11:33,813 INFO L470 AbstractCegarLoop]: Abstraction has 252435 states and 381980 transitions. [2021-11-06 17:11:33,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:11:33,813 INFO L276 IsEmpty]: Start isEmpty. Operand 252435 states and 381980 transitions. [2021-11-06 17:11:33,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 17:11:33,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:11:33,815 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] [2021-11-06 17:11:33,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 17:11:33,816 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 72 more)] === [2021-11-06 17:11:33,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:11:33,819 INFO L85 PathProgramCache]: Analyzing trace with hash -154241870, now seen corresponding path program 1 times [2021-11-06 17:11:33,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:11:33,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930543167] [2021-11-06 17:11:33,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:11:33,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:11:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:11:34,249 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 17:11:34,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:11:34,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930543167] [2021-11-06 17:11:34,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930543167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:11:34,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:11:34,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 17:11:34,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960776936] [2021-11-06 17:11:34,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:11:34,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:11:34,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:11:34,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:11:34,250 INFO L87 Difference]: Start difference. First operand 252435 states and 381980 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:11:57,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:11:57,880 INFO L93 Difference]: Finished difference Result 1236325 states and 1870705 transitions. [2021-11-06 17:11:57,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:11:57,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-06 17:11:57,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:12:01,509 INFO L225 Difference]: With dead ends: 1236325 [2021-11-06 17:12:01,510 INFO L226 Difference]: Without dead ends: 983933 [2021-11-06 17:12:01,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:12:03,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983933 states.