./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.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-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 271771768c3380f5979c29c79a53c5e282857dcb6c4c2b744d0fa4e6e2c0dd66 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:24:50,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:24:50,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:24:50,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:24:50,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:24:50,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:24:50,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:24:50,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:24:50,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:24:50,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:24:50,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:24:50,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:24:50,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:24:50,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:24:50,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:24:50,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:24:50,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:24:50,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:24:50,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:24:50,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:24:50,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:24:50,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:24:50,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:24:50,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:24:50,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:24:50,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:24:50,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:24:50,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:24:50,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:24:50,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:24:50,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:24:50,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:24:50,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:24:50,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:24:50,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:24:50,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:24:50,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:24:50,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:24:50,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:24:50,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:24:50,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:24:50,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:24:50,518 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:24:50,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:24:50,523 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:24:50,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:24:50,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:24:50,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:24:50,524 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:24:50,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:24:50,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:24:50,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:24:50,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:24:50,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:24:50,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:24:50,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:24:50,526 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:24:50,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:24:50,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:24:50,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:24:50,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:24:50,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:24:50,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:24:50,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:24:50,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:24:50,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:24:50,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:24:50,527 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:24:50,527 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:24:50,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:24:50,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:24:50,528 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 271771768c3380f5979c29c79a53c5e282857dcb6c4c2b744d0fa4e6e2c0dd66 [2021-11-06 15:24:50,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:24:50,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:24:50,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:24:50,706 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:24:50,706 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:24:50,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:24:50,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af117608f/d214f9ba20394433a405322490612eae/FLAG5e359b68e [2021-11-06 15:24:51,316 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:24:51,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:24:51,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af117608f/d214f9ba20394433a405322490612eae/FLAG5e359b68e [2021-11-06 15:24:51,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af117608f/d214f9ba20394433a405322490612eae [2021-11-06 15:24:51,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:24:51,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:24:51,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:24:51,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:24:51,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:24:51,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:24:51" (1/1) ... [2021-11-06 15:24:51,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@417725dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:24:51, skipping insertion in model container [2021-11-06 15:24:51,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:24:51" (1/1) ... [2021-11-06 15:24:51,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:24:51,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:24:52,574 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i[185985,185998] [2021-11-06 15:24:52,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:24:52,615 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:24:52,788 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i[185985,185998] [2021-11-06 15:24:52,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:24:52,866 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:24:52,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:24:52 WrapperNode [2021-11-06 15:24:52,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:24:52,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:24:52,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:24:52,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:24:52,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:24:52" (1/1) ... [2021-11-06 15:24:52,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:24:52" (1/1) ... [2021-11-06 15:24:53,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:24:53,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:24:53,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:24:53,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:24:53,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:24:52" (1/1) ... [2021-11-06 15:24:53,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:24:52" (1/1) ... [2021-11-06 15:24:53,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:24:52" (1/1) ... [2021-11-06 15:24:53,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:24:52" (1/1) ... [2021-11-06 15:24:54,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:24:52" (1/1) ... [2021-11-06 15:24:54,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:24:52" (1/1) ... [2021-11-06 15:24:54,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:24:52" (1/1) ... [2021-11-06 15:24:54,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:24:54,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:24:54,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:24:54,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:24:54,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:24:52" (1/1) ... [2021-11-06 15:24:54,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:24:54,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:24:54,510 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 15:24:54,514 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 15:24:54,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:24:54,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:24:54,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:24:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:24:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:24:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:24:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:24:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:24:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:24:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:24:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:24:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:24:54,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:24:54,534 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-06 15:24:54,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:24:54,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:25:12,607 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:25:12,608 INFO L299 CfgBuilder]: Removed 3233 assume(true) statements. [2021-11-06 15:25:12,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:25:12 BoogieIcfgContainer [2021-11-06 15:25:12,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:25:12,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:25:12,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:25:12,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:25:12,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:24:51" (1/3) ... [2021-11-06 15:25:12,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c66324f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:25:12, skipping insertion in model container [2021-11-06 15:25:12,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:24:52" (2/3) ... [2021-11-06 15:25:12,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c66324f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:25:12, skipping insertion in model container [2021-11-06 15:25:12,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:25:12" (3/3) ... [2021-11-06 15:25:12,618 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:25:12,621 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:25:12,621 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-06 15:25:12,681 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:25:12,687 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 15:25:12,688 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-06 15:25:12,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 4726 states, 4719 states have (on average 1.5117609663064209) internal successors, (7134), 4725 states have internal predecessors, (7134), 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 15:25:12,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 15:25:12,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:25:12,766 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] [2021-11-06 15:25:12,766 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 15:25:12,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:25:12,770 INFO L85 PathProgramCache]: Analyzing trace with hash 7063654, now seen corresponding path program 1 times [2021-11-06 15:25:12,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:25:12,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128579548] [2021-11-06 15:25:12,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:25:12,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:25:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:25:13,153 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 15:25:13,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:25:13,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128579548] [2021-11-06 15:25:13,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128579548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:25:13,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:25:13,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:25:13,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810575102] [2021-11-06 15:25:13,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 15:25:13,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:25:13,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 15:25:13,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:25:13,179 INFO L87 Difference]: Start difference. First operand has 4726 states, 4719 states have (on average 1.5117609663064209) internal successors, (7134), 4725 states have internal predecessors, (7134), 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 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:25:13,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:25:13,290 INFO L93 Difference]: Finished difference Result 9448 states and 14263 transitions. [2021-11-06 15:25:13,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:25:13,292 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-06 15:25:13,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:25:13,319 INFO L225 Difference]: With dead ends: 9448 [2021-11-06 15:25:13,320 INFO L226 Difference]: Without dead ends: 4697 [2021-11-06 15:25:13,333 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 15:25:13,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4697 states. [2021-11-06 15:25:13,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4697 to 4697. [2021-11-06 15:25:13,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4697 states, 4691 states have (on average 1.5052227670006395) internal successors, (7061), 4696 states have internal predecessors, (7061), 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 15:25:13,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4697 states to 4697 states and 7061 transitions. [2021-11-06 15:25:13,486 INFO L78 Accepts]: Start accepts. Automaton has 4697 states and 7061 transitions. Word has length 42 [2021-11-06 15:25:13,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:25:13,486 INFO L470 AbstractCegarLoop]: Abstraction has 4697 states and 7061 transitions. [2021-11-06 15:25:13,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:25:13,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4697 states and 7061 transitions. [2021-11-06 15:25:13,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 15:25:13,490 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:25:13,490 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] [2021-11-06 15:25:13,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:25:13,491 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 15:25:13,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:25:13,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1980709140, now seen corresponding path program 1 times [2021-11-06 15:25:13,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:25:13,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058094984] [2021-11-06 15:25:13,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:25:13,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:25:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:25:13,638 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 15:25:13,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:25:13,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058094984] [2021-11-06 15:25:13,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058094984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:25:13,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:25:13,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:25:13,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385060114] [2021-11-06 15:25:13,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:25:13,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:25:13,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:25:13,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:25:13,643 INFO L87 Difference]: Start difference. First operand 4697 states and 7061 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:25:13,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:25:13,796 INFO L93 Difference]: Finished difference Result 10102 states and 15157 transitions. [2021-11-06 15:25:13,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:25:13,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-06 15:25:13,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:25:13,813 INFO L225 Difference]: With dead ends: 10102 [2021-11-06 15:25:13,813 INFO L226 Difference]: Without dead ends: 5423 [2021-11-06 15:25:13,820 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 15:25:13,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2021-11-06 15:25:13,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 5405. [2021-11-06 15:25:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5405 states, 5399 states have (on average 1.4995369512872754) internal successors, (8096), 5404 states have internal predecessors, (8096), 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 15:25:13,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 8096 transitions. [2021-11-06 15:25:13,908 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 8096 transitions. Word has length 42 [2021-11-06 15:25:13,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:25:13,908 INFO L470 AbstractCegarLoop]: Abstraction has 5405 states and 8096 transitions. [2021-11-06 15:25:13,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:25:13,908 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 8096 transitions. [2021-11-06 15:25:13,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 15:25:13,912 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:25:13,912 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:25:13,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:25:13,913 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 15:25:13,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:25:13,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1637024580, now seen corresponding path program 1 times [2021-11-06 15:25:13,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:25:13,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464533810] [2021-11-06 15:25:13,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:25:13,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:25:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:25:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:25:14,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:25:14,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464533810] [2021-11-06 15:25:14,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464533810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:25:14,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:25:14,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 15:25:14,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236323309] [2021-11-06 15:25:14,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 15:25:14,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:25:14,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 15:25:14,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:25:14,111 INFO L87 Difference]: Start difference. First operand 5405 states and 8096 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 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 15:25:53,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:25:53,113 INFO L93 Difference]: Finished difference Result 11543 states and 17238 transitions. [2021-11-06 15:25:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 15:25:53,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 15:25:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:25:53,133 INFO L225 Difference]: With dead ends: 11543 [2021-11-06 15:25:53,133 INFO L226 Difference]: Without dead ends: 6156 [2021-11-06 15:25:53,141 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-06 15:25:53,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6156 states. [2021-11-06 15:25:53,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6156 to 5772. [2021-11-06 15:25:53,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5772 states, 5766 states have (on average 1.4954908081859175) internal successors, (8623), 5771 states have internal predecessors, (8623), 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 15:25:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5772 states to 5772 states and 8623 transitions. [2021-11-06 15:25:53,398 INFO L78 Accepts]: Start accepts. Automaton has 5772 states and 8623 transitions. Word has length 85 [2021-11-06 15:25:53,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:25:53,400 INFO L470 AbstractCegarLoop]: Abstraction has 5772 states and 8623 transitions. [2021-11-06 15:25:53,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 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 15:25:53,400 INFO L276 IsEmpty]: Start isEmpty. Operand 5772 states and 8623 transitions. [2021-11-06 15:25:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 15:25:53,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:25:53,404 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:25:53,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:25:53,405 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 15:25:53,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:25:53,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1740302319, now seen corresponding path program 1 times [2021-11-06 15:25:53,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:25:53,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599915190] [2021-11-06 15:25:53,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:25:53,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:25:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:25:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:25:53,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:25:53,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599915190] [2021-11-06 15:25:53,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599915190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:25:53,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:25:53,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:25:53,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751382684] [2021-11-06 15:25:53,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:25:53,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:25:53,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:25:53,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:25:53,596 INFO L87 Difference]: Start difference. First operand 5772 states and 8623 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:25:53,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:25:53,733 INFO L93 Difference]: Finished difference Result 11270 states and 16877 transitions. [2021-11-06 15:25:53,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:25:53,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-06 15:25:53,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:25:53,781 INFO L225 Difference]: With dead ends: 11270 [2021-11-06 15:25:53,781 INFO L226 Difference]: Without dead ends: 11262 [2021-11-06 15:25:53,785 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 15:25:53,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11262 states. [2021-11-06 15:25:53,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11262 to 5764. [2021-11-06 15:25:53,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5764 states, 5762 states have (on average 1.494793474488025) internal successors, (8613), 5763 states have internal predecessors, (8613), 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 15:25:53,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5764 states to 5764 states and 8613 transitions. [2021-11-06 15:25:53,927 INFO L78 Accepts]: Start accepts. Automaton has 5764 states and 8613 transitions. Word has length 87 [2021-11-06 15:25:53,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:25:53,930 INFO L470 AbstractCegarLoop]: Abstraction has 5764 states and 8613 transitions. [2021-11-06 15:25:53,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:25:53,930 INFO L276 IsEmpty]: Start isEmpty. Operand 5764 states and 8613 transitions. [2021-11-06 15:25:53,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-06 15:25:53,935 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:25:53,935 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:25:53,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:25:53,935 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 15:25:53,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:25:53,936 INFO L85 PathProgramCache]: Analyzing trace with hash -963041693, now seen corresponding path program 1 times [2021-11-06 15:25:53,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:25:53,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020955320] [2021-11-06 15:25:53,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:25:53,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:25:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:25:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:25:54,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:25:54,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020955320] [2021-11-06 15:25:54,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020955320] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:25:54,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836164429] [2021-11-06 15:25:54,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:25:54,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:25:54,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:25:54,316 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 15:25:54,325 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 15:25:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:25:54,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-06 15:25:54,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:25:55,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-06 15:25:55,187 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-06 15:25:55,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-06 15:25:55,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_ldv_init_zalloc_#t~malloc43.base|] [2021-11-06 15:25:55,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:25:55,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-11-06 15:25:55,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889210786] [2021-11-06 15:25:55,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 15:25:55,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:25:55,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 15:25:55,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-11-06 15:25:55,319 INFO L87 Difference]: Start difference. First operand 5764 states and 8613 transitions. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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 15:30:15,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:30:15,371 INFO L93 Difference]: Finished difference Result 24078 states and 35704 transitions. [2021-11-06 15:30:15,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-06 15:30:15,371 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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 99 [2021-11-06 15:30:15,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:30:15,410 INFO L225 Difference]: With dead ends: 24078 [2021-11-06 15:30:15,410 INFO L226 Difference]: Without dead ends: 18332 [2021-11-06 15:30:15,425 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=613, Invalid=2579, Unknown=0, NotChecked=0, Total=3192 [2021-11-06 15:30:15,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18332 states. [2021-11-06 15:30:15,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18332 to 12203. [2021-11-06 15:30:15,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12203 states, 12201 states have (on average 1.49233669371363) internal successors, (18208), 12202 states have internal predecessors, (18208), 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 15:30:15,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12203 states to 12203 states and 18208 transitions. [2021-11-06 15:30:15,829 INFO L78 Accepts]: Start accepts. Automaton has 12203 states and 18208 transitions. Word has length 99 [2021-11-06 15:30:15,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:30:15,830 INFO L470 AbstractCegarLoop]: Abstraction has 12203 states and 18208 transitions. [2021-11-06 15:30:15,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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 15:30:15,832 INFO L276 IsEmpty]: Start isEmpty. Operand 12203 states and 18208 transitions. [2021-11-06 15:30:15,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-06 15:30:15,843 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:30:15,844 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:30:15,871 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 15:30:16,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:30:16,068 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 15:30:16,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:30:16,069 INFO L85 PathProgramCache]: Analyzing trace with hash 819478138, now seen corresponding path program 1 times [2021-11-06 15:30:16,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:30:16,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576498560] [2021-11-06 15:30:16,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:30:16,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:30:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:30:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 15:30:16,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:30:16,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576498560] [2021-11-06 15:30:16,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576498560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:30:16,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:30:16,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:30:16,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062797924] [2021-11-06 15:30:16,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:30:16,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:30:16,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:30:16,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:30:16,271 INFO L87 Difference]: Start difference. First operand 12203 states and 18208 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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 15:30:37,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:30:37,553 INFO L93 Difference]: Finished difference Result 28573 states and 42331 transitions. [2021-11-06 15:30:37,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:30:37,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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 100 [2021-11-06 15:30:37,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:30:37,586 INFO L225 Difference]: With dead ends: 28573 [2021-11-06 15:30:37,586 INFO L226 Difference]: Without dead ends: 16388 [2021-11-06 15:30:37,604 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:30:37,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16388 states. [2021-11-06 15:30:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16388 to 12211. [2021-11-06 15:30:37,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12211 states, 12209 states have (on average 1.4921779015480383) internal successors, (18218), 12210 states have internal predecessors, (18218), 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 15:30:37,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12211 states to 12211 states and 18218 transitions. [2021-11-06 15:30:37,882 INFO L78 Accepts]: Start accepts. Automaton has 12211 states and 18218 transitions. Word has length 100 [2021-11-06 15:30:37,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:30:37,883 INFO L470 AbstractCegarLoop]: Abstraction has 12211 states and 18218 transitions. [2021-11-06 15:30:37,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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 15:30:37,883 INFO L276 IsEmpty]: Start isEmpty. Operand 12211 states and 18218 transitions. [2021-11-06 15:30:37,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 15:30:37,891 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:30:37,892 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:30:37,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 15:30:37,892 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 15:30:37,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:30:37,893 INFO L85 PathProgramCache]: Analyzing trace with hash 61488929, now seen corresponding path program 1 times [2021-11-06 15:30:37,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:30:37,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255895630] [2021-11-06 15:30:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:30:37,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:30:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:30:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 15:30:38,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:30:38,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255895630] [2021-11-06 15:30:38,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255895630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:30:38,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:30:38,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 15:30:38,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081151897] [2021-11-06 15:30:38,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:30:38,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:30:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:30:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:30:38,075 INFO L87 Difference]: Start difference. First operand 12211 states and 18218 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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 15:31:16,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:31:16,634 INFO L93 Difference]: Finished difference Result 44267 states and 65512 transitions. [2021-11-06 15:31:16,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 15:31:16,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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 15:31:16,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:31:16,700 INFO L225 Difference]: With dead ends: 44267 [2021-11-06 15:31:16,700 INFO L226 Difference]: Without dead ends: 32074 [2021-11-06 15:31:16,728 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-06 15:31:16,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32074 states. [2021-11-06 15:31:17,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32074 to 12213. [2021-11-06 15:31:17,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12213 states, 12211 states have (on average 1.4920972893292932) internal successors, (18220), 12212 states have internal predecessors, (18220), 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 15:31:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12213 states to 12213 states and 18220 transitions. [2021-11-06 15:31:17,301 INFO L78 Accepts]: Start accepts. Automaton has 12213 states and 18220 transitions. Word has length 101 [2021-11-06 15:31:17,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:31:17,302 INFO L470 AbstractCegarLoop]: Abstraction has 12213 states and 18220 transitions. [2021-11-06 15:31:17,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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 15:31:17,302 INFO L276 IsEmpty]: Start isEmpty. Operand 12213 states and 18220 transitions. [2021-11-06 15:31:17,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 15:31:17,310 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:31:17,310 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:31:17,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 15:31:17,311 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 15:31:17,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:31:17,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1767294805, now seen corresponding path program 1 times [2021-11-06 15:31:17,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:31:17,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067314990] [2021-11-06 15:31:17,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:31:17,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:31:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:31:17,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 15:31:17,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:31:17,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067314990] [2021-11-06 15:31:17,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067314990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:31:17,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:31:17,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 15:31:17,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630415406] [2021-11-06 15:31:17,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:31:17,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:31:17,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:31:17,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:31:17,484 INFO L87 Difference]: Start difference. First operand 12213 states and 18220 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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 15:31:52,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:31:52,421 INFO L93 Difference]: Finished difference Result 30743 states and 45423 transitions. [2021-11-06 15:31:52,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 15:31:52,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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 15:31:52,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:31:52,464 INFO L225 Difference]: With dead ends: 30743 [2021-11-06 15:31:52,464 INFO L226 Difference]: Without dead ends: 18548 [2021-11-06 15:31:52,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-06 15:31:52,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18548 states. [2021-11-06 15:31:52,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18548 to 12221. [2021-11-06 15:31:52,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12221 states, 12219 states have (on average 1.4919387838611997) internal successors, (18230), 12220 states have internal predecessors, (18230), 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 15:31:52,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12221 states to 12221 states and 18230 transitions. [2021-11-06 15:31:52,925 INFO L78 Accepts]: Start accepts. Automaton has 12221 states and 18230 transitions. Word has length 101 [2021-11-06 15:31:52,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:31:52,926 INFO L470 AbstractCegarLoop]: Abstraction has 12221 states and 18230 transitions. [2021-11-06 15:31:52,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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 15:31:52,926 INFO L276 IsEmpty]: Start isEmpty. Operand 12221 states and 18230 transitions. [2021-11-06 15:31:52,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-06 15:31:52,934 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:31:52,934 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:31:52,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 15:31:52,935 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 15:31:52,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:31:52,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1475906320, now seen corresponding path program 1 times [2021-11-06 15:31:52,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:31:52,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357491561] [2021-11-06 15:31:52,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:31:52,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:31:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:31:53,088 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 15:31:53,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:31:53,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357491561] [2021-11-06 15:31:53,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357491561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:31:53,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:31:53,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 15:31:53,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044743208] [2021-11-06 15:31:53,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 15:31:53,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:31:53,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 15:31:53,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:31:53,090 INFO L87 Difference]: Start difference. First operand 12221 states and 18230 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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 15:33:15,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:15,828 INFO L93 Difference]: Finished difference Result 47815 states and 70557 transitions. [2021-11-06 15:33:15,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 15:33:15,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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 102 [2021-11-06 15:33:15,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:15,882 INFO L225 Difference]: With dead ends: 47815 [2021-11-06 15:33:15,883 INFO L226 Difference]: Without dead ends: 35612 [2021-11-06 15:33:15,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-11-06 15:33:15,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35612 states. [2021-11-06 15:33:16,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35612 to 12229. [2021-11-06 15:33:16,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12229 states, 12227 states have (on average 1.4919440582317822) internal successors, (18242), 12228 states have internal predecessors, (18242), 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 15:33:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12229 states to 12229 states and 18242 transitions. [2021-11-06 15:33:16,303 INFO L78 Accepts]: Start accepts. Automaton has 12229 states and 18242 transitions. Word has length 102 [2021-11-06 15:33:16,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:16,304 INFO L470 AbstractCegarLoop]: Abstraction has 12229 states and 18242 transitions. [2021-11-06 15:33:16,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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 15:33:16,304 INFO L276 IsEmpty]: Start isEmpty. Operand 12229 states and 18242 transitions. [2021-11-06 15:33:16,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 15:33:16,312 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:16,312 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:33:16,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 15:33:16,313 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 15:33:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:16,313 INFO L85 PathProgramCache]: Analyzing trace with hash -376005908, now seen corresponding path program 1 times [2021-11-06 15:33:16,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:16,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159721917] [2021-11-06 15:33:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:16,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:33:16,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:16,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159721917] [2021-11-06 15:33:16,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159721917] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:33:16,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641026858] [2021-11-06 15:33:16,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:16,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:33:16,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:33:16,719 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 15:33:16,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 15:33:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:17,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-06 15:33:17,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:33:17,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-06 15:33:17,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-06 15:33:17,610 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-06 15:33:17,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 34 [2021-11-06 15:33:17,621 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2021-11-06 15:33:17,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-06 15:33:17,753 INFO L354 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2021-11-06 15:33:17,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2021-11-06 15:33:17,768 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-06 15:33:17,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-06 15:33:18,625 INFO L354 Elim1Store]: treesize reduction 168, result has 28.5 percent of original size [2021-11-06 15:33:18,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 100 treesize of output 152 [2021-11-06 15:33:18,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:33:18,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-11-06 15:33:19,643 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-06 15:33:19,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 203 treesize of output 213 [2021-11-06 15:33:19,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2021-11-06 15:34:22,174 INFO L354 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2021-11-06 15:34:22,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 129 treesize of output 167 [2021-11-06 15:34:22,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-11-06 15:34:22,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:34:22,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-06 15:34:22,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004659952] [2021-11-06 15:34:22,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 15:34:22,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:34:22,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 15:34:22,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=632, Unknown=1, NotChecked=0, Total=702 [2021-11-06 15:34:22,181 INFO L87 Difference]: Start difference. First operand 12229 states and 18242 transitions. Second operand has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 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 15:34:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:34:22,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 15:34:22,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-06 15:34:22,382 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@668dd4a0 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:869) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-06 15:34:22,387 INFO L168 Benchmark]: Toolchain (without parser) took 570604.71 ms. Allocated memory was 94.4 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 54.9 MB in the beginning and 771.6 MB in the end (delta: -716.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 16.1 GB. [2021-11-06 15:34:22,387 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory is still 50.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-06 15:34:22,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1076.28 ms. Allocated memory was 94.4 MB in the beginning and 151.0 MB in the end (delta: 56.6 MB). Free memory was 54.7 MB in the beginning and 99.3 MB in the end (delta: -44.7 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. [2021-11-06 15:34:22,387 INFO L168 Benchmark]: Boogie Procedure Inliner took 665.61 ms. Allocated memory was 151.0 MB in the beginning and 278.9 MB in the end (delta: 127.9 MB). Free memory was 98.6 MB in the beginning and 158.7 MB in the end (delta: -60.0 MB). Peak memory consumption was 88.2 MB. Max. memory is 16.1 GB. [2021-11-06 15:34:22,388 INFO L168 Benchmark]: Boogie Preprocessor took 949.47 ms. Allocated memory is still 278.9 MB. Free memory was 158.7 MB in the beginning and 108.8 MB in the end (delta: 49.9 MB). Peak memory consumption was 94.4 MB. Max. memory is 16.1 GB. [2021-11-06 15:34:22,388 INFO L168 Benchmark]: RCFGBuilder took 18126.27 ms. Allocated memory was 278.9 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 108.8 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 903.9 MB. Max. memory is 16.1 GB. [2021-11-06 15:34:22,388 INFO L168 Benchmark]: TraceAbstraction took 549773.26 ms. Allocated memory is still 2.0 GB. Free memory was 1.5 GB in the beginning and 771.6 MB in the end (delta: 692.5 MB). Peak memory consumption was 692.0 MB. Max. memory is 16.1 GB. [2021-11-06 15:34:22,390 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory is still 50.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1076.28 ms. Allocated memory was 94.4 MB in the beginning and 151.0 MB in the end (delta: 56.6 MB). Free memory was 54.7 MB in the beginning and 99.3 MB in the end (delta: -44.7 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 665.61 ms. Allocated memory was 151.0 MB in the beginning and 278.9 MB in the end (delta: 127.9 MB). Free memory was 98.6 MB in the beginning and 158.7 MB in the end (delta: -60.0 MB). Peak memory consumption was 88.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 949.47 ms. Allocated memory is still 278.9 MB. Free memory was 158.7 MB in the beginning and 108.8 MB in the end (delta: 49.9 MB). Peak memory consumption was 94.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 18126.27 ms. Allocated memory was 278.9 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 108.8 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 903.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 549773.26 ms. Allocated memory is still 2.0 GB. Free memory was 1.5 GB in the beginning and 771.6 MB in the end (delta: 692.5 MB). Peak memory consumption was 692.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@668dd4a0 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@668dd4a0: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-06 15:34:22,599 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-06 15:34:22,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 271771768c3380f5979c29c79a53c5e282857dcb6c4c2b744d0fa4e6e2c0dd66 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:34:24,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:34:24,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:34:24,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:34:24,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:34:24,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:34:24,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:34:24,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:34:24,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:34:24,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:34:24,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:34:24,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:34:24,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:34:24,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:34:24,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:34:24,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:34:24,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:34:24,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:34:24,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:34:24,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:34:24,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:34:24,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:34:24,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:34:24,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:34:24,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:34:24,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:34:24,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:34:24,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:34:24,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:34:24,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:34:24,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:34:24,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:34:24,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:34:24,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:34:24,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:34:24,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:34:24,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:34:24,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:34:24,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:34:24,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:34:24,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:34:24,254 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-06 15:34:24,273 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:34:24,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:34:24,274 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:34:24,274 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:34:24,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:34:24,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:34:24,276 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:34:24,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:34:24,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:34:24,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:34:24,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:34:24,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:34:24,278 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-06 15:34:24,278 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-06 15:34:24,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:34:24,278 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:34:24,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:34:24,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:34:24,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:34:24,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:34:24,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:34:24,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:34:24,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:34:24,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:34:24,285 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-06 15:34:24,285 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-06 15:34:24,286 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:34:24,286 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:34:24,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:34:24,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:34:24,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-06 15:34:24,286 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 271771768c3380f5979c29c79a53c5e282857dcb6c4c2b744d0fa4e6e2c0dd66 [2021-11-06 15:34:24,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:34:24,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:34:24,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:34:24,565 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:34:24,566 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:34:24,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:34:24,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e2a9589/08a751856df24711b73f01029ad385a8/FLAG7888d7d6c [2021-11-06 15:34:25,196 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:34:25,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:34:25,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e2a9589/08a751856df24711b73f01029ad385a8/FLAG7888d7d6c [2021-11-06 15:34:25,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e2a9589/08a751856df24711b73f01029ad385a8 [2021-11-06 15:34:25,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:34:25,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:34:25,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:34:25,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:34:25,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:34:25,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:34:25" (1/1) ... [2021-11-06 15:34:25,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f416abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:34:25, skipping insertion in model container [2021-11-06 15:34:25,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:34:25" (1/1) ... [2021-11-06 15:34:25,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:34:25,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:34:26,492 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i[185985,185998] [2021-11-06 15:34:26,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:34:26,527 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:34:26,769 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i[185985,185998] [2021-11-06 15:34:26,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:34:26,854 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:34:26,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:34:26 WrapperNode [2021-11-06 15:34:26,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:34:26,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:34:26,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:34:26,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:34:26,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:34:26" (1/1) ... [2021-11-06 15:34:26,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:34:26" (1/1) ... [2021-11-06 15:34:27,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:34:27,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:34:27,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:34:27,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:34:27,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:34:26" (1/1) ... [2021-11-06 15:34:27,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:34:26" (1/1) ... [2021-11-06 15:34:27,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:34:26" (1/1) ... [2021-11-06 15:34:27,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:34:26" (1/1) ... [2021-11-06 15:34:28,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:34:26" (1/1) ... [2021-11-06 15:34:28,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:34:26" (1/1) ... [2021-11-06 15:34:28,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:34:26" (1/1) ... [2021-11-06 15:34:28,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:34:28,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:34:28,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:34:28,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:34:28,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:34:26" (1/1) ... [2021-11-06 15:34:28,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:34:28,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:34:28,258 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 15:34:28,274 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 15:34:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-06 15:34:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-06 15:34:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-06 15:34:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:34:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-06 15:34:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:34:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-06 15:34:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-06 15:34:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-06 15:34:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-06 15:34:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:34:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:34:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:34:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-06 15:34:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-06 15:34:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-06 15:34:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:34:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-06 15:34:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-06 15:34:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:34:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-06 15:34:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:34:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-06 15:34:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-06 15:34:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-06 15:34:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-06 15:34:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-06 15:34:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:34:28,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:37:37,213 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:37:37,214 INFO L299 CfgBuilder]: Removed 3233 assume(true) statements. [2021-11-06 15:37:37,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:37:37 BoogieIcfgContainer [2021-11-06 15:37:37,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:37:37,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:37:37,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:37:37,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:37:37,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:34:25" (1/3) ... [2021-11-06 15:37:37,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e17f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:37:37, skipping insertion in model container [2021-11-06 15:37:37,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:34:26" (2/3) ... [2021-11-06 15:37:37,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e17f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:37:37, skipping insertion in model container [2021-11-06 15:37:37,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:37:37" (3/3) ... [2021-11-06 15:37:37,223 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:37:37,226 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:37:37,227 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-06 15:37:37,277 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:37:37,281 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 15:37:37,281 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-06 15:37:37,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 4726 states, 4719 states have (on average 1.5117609663064209) internal successors, (7134), 4725 states have internal predecessors, (7134), 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 15:37:37,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 15:37:37,354 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:37:37,354 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] [2021-11-06 15:37:37,355 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 15:37:37,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:37:37,361 INFO L85 PathProgramCache]: Analyzing trace with hash 7063654, now seen corresponding path program 1 times [2021-11-06 15:37:37,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 15:37:37,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75947427] [2021-11-06 15:37:37,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:37:37,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 15:37:37,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 15:37:37,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 15:37:37,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-06 15:37:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:37:38,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-06 15:37:38,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:37:38,648 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 15:37:38,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 15:37:38,965 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 15:37:38,966 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 15:37:38,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75947427] [2021-11-06 15:37:38,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75947427] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 15:37:38,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:37:38,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-06 15:37:38,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533255407] [2021-11-06 15:37:38,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 15:37:38,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 15:37:38,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 15:37:38,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:37:38,998 INFO L87 Difference]: Start difference. First operand has 4726 states, 4719 states have (on average 1.5117609663064209) internal successors, (7134), 4725 states have internal predecessors, (7134), 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 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:37:39,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:37:39,135 INFO L93 Difference]: Finished difference Result 9448 states and 14263 transitions. [2021-11-06 15:37:39,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:37:39,137 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-06 15:37:39,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:37:39,167 INFO L225 Difference]: With dead ends: 9448 [2021-11-06 15:37:39,168 INFO L226 Difference]: Without dead ends: 4697 [2021-11-06 15:37:39,182 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 82 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 15:37:39,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4697 states. [2021-11-06 15:37:39,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4697 to 4697. [2021-11-06 15:37:39,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4697 states, 4691 states have (on average 1.5052227670006395) internal successors, (7061), 4696 states have internal predecessors, (7061), 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 15:37:39,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4697 states to 4697 states and 7061 transitions. [2021-11-06 15:37:39,326 INFO L78 Accepts]: Start accepts. Automaton has 4697 states and 7061 transitions. Word has length 42 [2021-11-06 15:37:39,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:37:39,327 INFO L470 AbstractCegarLoop]: Abstraction has 4697 states and 7061 transitions. [2021-11-06 15:37:39,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:37:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4697 states and 7061 transitions. [2021-11-06 15:37:39,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 15:37:39,329 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:37:39,330 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] [2021-11-06 15:37:39,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-06 15:37:39,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 15:37:39,552 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 15:37:39,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:37:39,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1980709140, now seen corresponding path program 1 times [2021-11-06 15:37:39,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 15:37:39,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125352982] [2021-11-06 15:37:39,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:37:39,560 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 15:37:39,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 15:37:39,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 15:37:39,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-06 15:37:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:37:40,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 15:37:40,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:37:40,922 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 15:37:40,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 15:37:41,227 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 15:37:41,228 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 15:37:41,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125352982] [2021-11-06 15:37:41,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125352982] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 15:37:41,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:37:41,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-06 15:37:41,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705629355] [2021-11-06 15:37:41,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:37:41,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 15:37:41,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:37:41,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:37:41,231 INFO L87 Difference]: Start difference. First operand 4697 states and 7061 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 15:37:41,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:37:41,467 INFO L93 Difference]: Finished difference Result 9382 states and 14113 transitions. [2021-11-06 15:37:41,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:37:41,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-06 15:37:41,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:37:41,484 INFO L225 Difference]: With dead ends: 9382 [2021-11-06 15:37:41,484 INFO L226 Difference]: Without dead ends: 4701 [2021-11-06 15:37:41,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:37:41,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4701 states. [2021-11-06 15:37:41,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4701 to 4701. [2021-11-06 15:37:41,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4701 states, 4695 states have (on average 1.5047923322683705) internal successors, (7065), 4700 states have internal predecessors, (7065), 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 15:37:41,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4701 states to 4701 states and 7065 transitions. [2021-11-06 15:37:41,583 INFO L78 Accepts]: Start accepts. Automaton has 4701 states and 7065 transitions. Word has length 42 [2021-11-06 15:37:41,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:37:41,584 INFO L470 AbstractCegarLoop]: Abstraction has 4701 states and 7065 transitions. [2021-11-06 15:37:41,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 15:37:41,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4701 states and 7065 transitions. [2021-11-06 15:37:41,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 15:37:41,586 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:37:41,586 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:37:41,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-06 15:37:41,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 15:37:41,810 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 15:37:41,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:37:41,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1915917044, now seen corresponding path program 1 times [2021-11-06 15:37:41,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 15:37:41,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472452128] [2021-11-06 15:37:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:37:41,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 15:37:41,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 15:37:41,813 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 15:37:41,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-06 15:37:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:37:42,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 15:37:42,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:37:43,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:37:43,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 15:37:44,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:37:44,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 15:37:44,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472452128] [2021-11-06 15:37:44,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472452128] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 15:37:44,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:37:44,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-06 15:37:44,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345306368] [2021-11-06 15:37:44,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 15:37:44,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 15:37:44,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 15:37:44,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:37:44,138 INFO L87 Difference]: Start difference. First operand 4701 states and 7065 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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 15:37:45,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:37:45,466 INFO L93 Difference]: Finished difference Result 9390 states and 14123 transitions. [2021-11-06 15:37:45,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 15:37:45,467 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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 44 [2021-11-06 15:37:45,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:37:45,481 INFO L225 Difference]: With dead ends: 9390 [2021-11-06 15:37:45,481 INFO L226 Difference]: Without dead ends: 4707 [2021-11-06 15:37:45,489 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-06 15:37:45,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4707 states. [2021-11-06 15:37:45,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4707 to 4707. [2021-11-06 15:37:45,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4707 states, 4701 states have (on average 1.5041480536056158) internal successors, (7071), 4706 states have internal predecessors, (7071), 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 15:37:45,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 7071 transitions. [2021-11-06 15:37:45,574 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 7071 transitions. Word has length 44 [2021-11-06 15:37:45,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:37:45,575 INFO L470 AbstractCegarLoop]: Abstraction has 4707 states and 7071 transitions. [2021-11-06 15:37:45,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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 15:37:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 7071 transitions. [2021-11-06 15:37:45,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-06 15:37:45,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:37:45,578 INFO L513 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:45,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-06 15:37:45,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 15:37:45,795 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 15:37:45,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:37:45,796 INFO L85 PathProgramCache]: Analyzing trace with hash 219745068, now seen corresponding path program 2 times [2021-11-06 15:37:45,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 15:37:45,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693205566] [2021-11-06 15:37:45,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 15:37:45,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 15:37:45,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 15:37:45,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 15:37:45,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-06 15:37:46,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 15:37:46,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:37:46,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 15:37:46,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:37:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 15:37:47,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 15:37:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 15:37:47,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 15:37:47,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693205566] [2021-11-06 15:37:47,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693205566] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 15:37:47,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:37:47,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-06 15:37:47,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791575099] [2021-11-06 15:37:47,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:37:47,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 15:37:47,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:37:47,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:37:47,270 INFO L87 Difference]: Start difference. First operand 4707 states and 7071 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 15:37:47,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:37:47,651 INFO L93 Difference]: Finished difference Result 10118 states and 15173 transitions. [2021-11-06 15:37:47,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:37:47,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 46 [2021-11-06 15:37:47,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:37:47,668 INFO L225 Difference]: With dead ends: 10118 [2021-11-06 15:37:47,668 INFO L226 Difference]: Without dead ends: 5433 [2021-11-06 15:37:47,675 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 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 15:37:47,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2021-11-06 15:37:47,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 5415. [2021-11-06 15:37:47,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5415 states, 5409 states have (on average 1.4986134220743206) internal successors, (8106), 5414 states have internal predecessors, (8106), 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 15:37:47,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5415 states to 5415 states and 8106 transitions. [2021-11-06 15:37:47,782 INFO L78 Accepts]: Start accepts. Automaton has 5415 states and 8106 transitions. Word has length 46 [2021-11-06 15:37:47,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:37:47,782 INFO L470 AbstractCegarLoop]: Abstraction has 5415 states and 8106 transitions. [2021-11-06 15:37:47,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 15:37:47,783 INFO L276 IsEmpty]: Start isEmpty. Operand 5415 states and 8106 transitions. [2021-11-06 15:37:47,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 15:37:47,788 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:37:47,788 INFO L513 BasicCegarLoop]: trace histogram [4, 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] [2021-11-06 15:37:47,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-06 15:37:48,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 15:37:48,003 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 15:37:48,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:37:48,004 INFO L85 PathProgramCache]: Analyzing trace with hash 962367612, now seen corresponding path program 1 times [2021-11-06 15:37:48,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 15:37:48,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191297303] [2021-11-06 15:37:48,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:37:48,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 15:37:48,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 15:37:48,010 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 15:37:48,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-06 15:37:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:37:54,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-06 15:37:54,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:37:55,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 15:37:55,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 15:37:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 15:37:55,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 15:37:55,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191297303] [2021-11-06 15:37:55,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191297303] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 15:37:55,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:37:55,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 8 [2021-11-06 15:37:55,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239423814] [2021-11-06 15:37:55,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 15:37:55,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 15:37:55,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 15:37:55,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:37:55,919 INFO L87 Difference]: Start difference. First operand 5415 states and 8106 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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) Killed by 15