./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:39:45,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:39:45,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:39:45,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:39:45,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:39:45,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:39:45,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:39:45,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:39:45,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:39:45,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:39:45,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:39:45,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:39:45,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:39:45,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:39:45,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:39:45,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:39:45,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:39:45,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:39:45,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:39:45,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:39:45,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:39:45,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:39:45,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:39:45,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:39:45,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:39:45,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:39:45,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:39:45,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:39:45,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:39:45,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:39:45,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:39:45,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:39:45,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:39:45,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:39:45,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:39:45,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:39:45,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:39:45,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:39:45,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:39:45,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:39:45,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:39:45,551 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:39:45,582 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:39:45,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:39:45,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:39:45,583 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:39:45,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:39:45,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:39:45,585 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:39:45,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:39:45,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:39:45,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:39:45,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:39:45,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:39:45,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:39:45,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:39:45,587 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:39:45,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:39:45,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:39:45,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:39:45,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:39:45,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:39:45,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:39:45,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:39:45,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:39:45,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:39:45,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:39:45,589 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:39:45,589 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:39:45,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:39:45,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:39:45,589 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 [2021-11-06 14:39:45,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:39:45,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:39:45,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:39:45,886 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:39:45,887 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:39:45,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2021-11-06 14:39:45,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42349e0df/83eab1a745ee4824829b2079b9f7f8dd/FLAG01e802ff4 [2021-11-06 14:39:46,596 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:39:46,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2021-11-06 14:39:46,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42349e0df/83eab1a745ee4824829b2079b9f7f8dd/FLAG01e802ff4 [2021-11-06 14:39:46,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42349e0df/83eab1a745ee4824829b2079b9f7f8dd [2021-11-06 14:39:46,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:39:46,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:39:46,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:39:46,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:39:46,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:39:46,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:39:46" (1/1) ... [2021-11-06 14:39:46,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c5fe90d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:39:46, skipping insertion in model container [2021-11-06 14:39:46,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:39:46" (1/1) ... [2021-11-06 14:39:46,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:39:46,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:39:47,543 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2021-11-06 14:39:48,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:39:48,096 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:39:48,261 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2021-11-06 14:39:48,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:39:48,419 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:39:48,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:39:48 WrapperNode [2021-11-06 14:39:48,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:39:48,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:39:48,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:39:48,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:39:48,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:39:48" (1/1) ... [2021-11-06 14:39:48,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:39:48" (1/1) ... [2021-11-06 14:39:48,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:39:48,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:39:48,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:39:48,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:39:48,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:39:48" (1/1) ... [2021-11-06 14:39:48,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:39:48" (1/1) ... [2021-11-06 14:39:49,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:39:48" (1/1) ... [2021-11-06 14:39:49,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:39:48" (1/1) ... [2021-11-06 14:39:49,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:39:48" (1/1) ... [2021-11-06 14:39:49,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:39:48" (1/1) ... [2021-11-06 14:39:49,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:39:48" (1/1) ... [2021-11-06 14:39:49,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:39:49,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:39:49,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:39:49,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:39:49,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:39:48" (1/1) ... [2021-11-06 14:39:49,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:39:49,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:39:49,969 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 14:39:49,998 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 14:39:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:39:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:39:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:39:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:39:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:39:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:39:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:39:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:39:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:39:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:39:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:39:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:39:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:39:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:39:50,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:43:46,364 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:43:46,364 INFO L299 CfgBuilder]: Removed 3056 assume(true) statements. [2021-11-06 14:43:46,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:43:46 BoogieIcfgContainer [2021-11-06 14:43:46,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:43:46,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:43:46,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:43:46,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:43:46,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:39:46" (1/3) ... [2021-11-06 14:43:46,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f89abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:43:46, skipping insertion in model container [2021-11-06 14:43:46,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:39:48" (2/3) ... [2021-11-06 14:43:46,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f89abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:43:46, skipping insertion in model container [2021-11-06 14:43:46,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:43:46" (3/3) ... [2021-11-06 14:43:46,438 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2021-11-06 14:43:46,446 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:43:46,446 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-06 14:43:46,497 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:43:46,501 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 14:43:46,501 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-06 14:43:46,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 2582 states, 2580 states have (on average 1.4275193798449612) internal successors, (3683), 2581 states have internal predecessors, (3683), 0 states have call successors, (0), 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 14:43:46,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-06 14:43:46,570 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:43:46,571 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] [2021-11-06 14:43:46,572 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:43:46,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:43:46,577 INFO L85 PathProgramCache]: Analyzing trace with hash -745159078, now seen corresponding path program 1 times [2021-11-06 14:43:46,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:43:46,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316337271] [2021-11-06 14:43:46,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:43:46,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:43:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:43:47,102 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 14:43:47,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:43:47,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316337271] [2021-11-06 14:43:47,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316337271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:43:47,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:43:47,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:43:47,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071995196] [2021-11-06 14:43:47,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:43:47,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:43:47,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:43:47,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:43:47,126 INFO L87 Difference]: Start difference. First operand has 2582 states, 2580 states have (on average 1.4275193798449612) internal successors, (3683), 2581 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:43:49,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:43:49,491 INFO L93 Difference]: Finished difference Result 7698 states and 10987 transitions. [2021-11-06 14:43:49,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:43:49,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-06 14:43:49,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:43:49,523 INFO L225 Difference]: With dead ends: 7698 [2021-11-06 14:43:49,524 INFO L226 Difference]: Without dead ends: 5089 [2021-11-06 14:43:49,534 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 14:43:49,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5089 states. [2021-11-06 14:43:49,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5089 to 5089. [2021-11-06 14:43:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 1.3128930817610063) internal successors, (6680), 5088 states have internal predecessors, (6680), 0 states have call successors, (0), 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 14:43:49,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 6680 transitions. [2021-11-06 14:43:49,703 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 6680 transitions. Word has length 22 [2021-11-06 14:43:49,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:43:49,703 INFO L470 AbstractCegarLoop]: Abstraction has 5089 states and 6680 transitions. [2021-11-06 14:43:49,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:43:49,704 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 6680 transitions. [2021-11-06 14:43:49,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-06 14:43:49,706 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:43:49,706 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:43:49,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:43:49,707 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:43:49,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:43:49,707 INFO L85 PathProgramCache]: Analyzing trace with hash -601537533, now seen corresponding path program 1 times [2021-11-06 14:43:49,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:43:49,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198746889] [2021-11-06 14:43:49,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:43:49,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:43:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:43:49,922 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 14:43:49,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:43:49,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198746889] [2021-11-06 14:43:49,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198746889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:43:49,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:43:49,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:43:49,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086340703] [2021-11-06 14:43:49,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:43:49,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:43:49,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:43:49,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:43:49,925 INFO L87 Difference]: Start difference. First operand 5089 states and 6680 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:43:51,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:43:51,194 INFO L93 Difference]: Finished difference Result 15229 states and 19997 transitions. [2021-11-06 14:43:51,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:43:51,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-06 14:43:51,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:43:51,235 INFO L225 Difference]: With dead ends: 15229 [2021-11-06 14:43:51,235 INFO L226 Difference]: Without dead ends: 10153 [2021-11-06 14:43:51,248 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:43:51,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10153 states. [2021-11-06 14:43:51,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10153 to 10089. [2021-11-06 14:43:51,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10089 states, 10088 states have (on average 1.3117565424266455) internal successors, (13233), 10088 states have internal predecessors, (13233), 0 states have call successors, (0), 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 14:43:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10089 states to 10089 states and 13233 transitions. [2021-11-06 14:43:51,514 INFO L78 Accepts]: Start accepts. Automaton has 10089 states and 13233 transitions. Word has length 25 [2021-11-06 14:43:51,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:43:51,515 INFO L470 AbstractCegarLoop]: Abstraction has 10089 states and 13233 transitions. [2021-11-06 14:43:51,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:43:51,516 INFO L276 IsEmpty]: Start isEmpty. Operand 10089 states and 13233 transitions. [2021-11-06 14:43:51,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-06 14:43:51,531 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:43:51,531 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:51,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:43:51,532 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:43:51,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:43:51,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1521844101, now seen corresponding path program 1 times [2021-11-06 14:43:51,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:43:51,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889484018] [2021-11-06 14:43:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:43:51,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:43:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:43:51,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:43:51,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:43:51,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889484018] [2021-11-06 14:43:51,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889484018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:43:51,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:43:51,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:43:51,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726747515] [2021-11-06 14:43:51,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:43:51,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:43:51,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:43:51,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:43:51,826 INFO L87 Difference]: Start difference. First operand 10089 states and 13233 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 14:44:06,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:44:06,702 INFO L93 Difference]: Finished difference Result 36818 states and 48257 transitions. [2021-11-06 14:44:06,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:44:06,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-11-06 14:44:06,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:44:06,804 INFO L225 Difference]: With dead ends: 36818 [2021-11-06 14:44:06,804 INFO L226 Difference]: Without dead ends: 26747 [2021-11-06 14:44:06,832 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:44:06,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26747 states. [2021-11-06 14:44:07,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26747 to 17313. [2021-11-06 14:44:07,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17313 states, 17312 states have (on average 1.3104205175600738) internal successors, (22686), 17312 states have internal predecessors, (22686), 0 states have call successors, (0), 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 14:44:07,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17313 states to 17313 states and 22686 transitions. [2021-11-06 14:44:07,376 INFO L78 Accepts]: Start accepts. Automaton has 17313 states and 22686 transitions. Word has length 105 [2021-11-06 14:44:07,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:44:07,376 INFO L470 AbstractCegarLoop]: Abstraction has 17313 states and 22686 transitions. [2021-11-06 14:44:07,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 14:44:07,377 INFO L276 IsEmpty]: Start isEmpty. Operand 17313 states and 22686 transitions. [2021-11-06 14:44:07,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 14:44:07,401 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:44:07,401 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:07,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:44:07,402 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:44:07,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:44:07,403 INFO L85 PathProgramCache]: Analyzing trace with hash -266526624, now seen corresponding path program 1 times [2021-11-06 14:44:07,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:44:07,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928900037] [2021-11-06 14:44:07,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:44:07,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:44:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:44:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:44:07,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:44:07,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928900037] [2021-11-06 14:44:07,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928900037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:44:07,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:44:07,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:44:07,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395691584] [2021-11-06 14:44:07,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:44:07,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:44:07,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:44:07,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:44:07,726 INFO L87 Difference]: Start difference. First operand 17313 states and 22686 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 14:44:20,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:44:20,201 INFO L93 Difference]: Finished difference Result 51277 states and 67186 transitions. [2021-11-06 14:44:20,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:44:20,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-06 14:44:20,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:44:20,313 INFO L225 Difference]: With dead ends: 51277 [2021-11-06 14:44:20,313 INFO L226 Difference]: Without dead ends: 41206 [2021-11-06 14:44:20,348 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:44:20,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41206 states. [2021-11-06 14:44:20,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41206 to 26673. [2021-11-06 14:44:21,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26673 states, 26672 states have (on average 1.3104004199160169) internal successors, (34951), 26672 states have internal predecessors, (34951), 0 states have call successors, (0), 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 14:44:21,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26673 states to 26673 states and 34951 transitions. [2021-11-06 14:44:21,114 INFO L78 Accepts]: Start accepts. Automaton has 26673 states and 34951 transitions. Word has length 106 [2021-11-06 14:44:21,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:44:21,115 INFO L470 AbstractCegarLoop]: Abstraction has 26673 states and 34951 transitions. [2021-11-06 14:44:21,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 14:44:21,116 INFO L276 IsEmpty]: Start isEmpty. Operand 26673 states and 34951 transitions. [2021-11-06 14:44:21,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-06 14:44:21,141 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:44:21,141 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:21,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:44:21,142 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:44:21,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:44:21,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1180737615, now seen corresponding path program 1 times [2021-11-06 14:44:21,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:44:21,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547884550] [2021-11-06 14:44:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:44:21,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:44:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:44:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:44:21,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:44:21,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547884550] [2021-11-06 14:44:21,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547884550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:44:21,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:44:21,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:44:21,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513355615] [2021-11-06 14:44:21,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:44:21,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:44:21,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:44:21,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:44:21,331 INFO L87 Difference]: Start difference. First operand 26673 states and 34951 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 14:44:36,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:44:36,651 INFO L93 Difference]: Finished difference Result 76549 states and 100289 transitions. [2021-11-06 14:44:36,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:44:36,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2021-11-06 14:44:36,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:44:36,798 INFO L225 Difference]: With dead ends: 76549 [2021-11-06 14:44:36,799 INFO L226 Difference]: Without dead ends: 57118 [2021-11-06 14:44:36,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:44:36,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57118 states. [2021-11-06 14:44:37,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57118 to 35341. [2021-11-06 14:44:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35341 states, 35340 states have (on average 1.310243350311262) internal successors, (46304), 35340 states have internal predecessors, (46304), 0 states have call successors, (0), 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 14:44:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35341 states to 35341 states and 46304 transitions. [2021-11-06 14:44:38,108 INFO L78 Accepts]: Start accepts. Automaton has 35341 states and 46304 transitions. Word has length 107 [2021-11-06 14:44:38,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:44:38,109 INFO L470 AbstractCegarLoop]: Abstraction has 35341 states and 46304 transitions. [2021-11-06 14:44:38,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 14:44:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 35341 states and 46304 transitions. [2021-11-06 14:44:38,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 14:44:38,130 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:44:38,131 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:44:38,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:44:38,131 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:44:38,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:44:38,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1171906616, now seen corresponding path program 1 times [2021-11-06 14:44:38,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:44:38,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775717111] [2021-11-06 14:44:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:44:38,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:44:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:44:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:44:38,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:44:38,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775717111] [2021-11-06 14:44:38,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775717111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:44:38,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:44:38,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:44:38,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332084862] [2021-11-06 14:44:38,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:44:38,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:44:38,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:44:38,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:44:38,332 INFO L87 Difference]: Start difference. First operand 35341 states and 46304 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:44:48,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:44:48,185 INFO L93 Difference]: Finished difference Result 124752 states and 163293 transitions. [2021-11-06 14:44:48,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:44:48,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-06 14:44:48,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:44:48,360 INFO L225 Difference]: With dead ends: 124752 [2021-11-06 14:44:48,360 INFO L226 Difference]: Without dead ends: 89429 [2021-11-06 14:44:48,430 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:44:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89429 states. [2021-11-06 14:44:50,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89429 to 57147. [2021-11-06 14:44:50,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57147 states, 57146 states have (on average 1.30924299163546) internal successors, (74818), 57146 states have internal predecessors, (74818), 0 states have call successors, (0), 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 14:44:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57147 states to 57147 states and 74818 transitions. [2021-11-06 14:44:50,524 INFO L78 Accepts]: Start accepts. Automaton has 57147 states and 74818 transitions. Word has length 108 [2021-11-06 14:44:50,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:44:50,524 INFO L470 AbstractCegarLoop]: Abstraction has 57147 states and 74818 transitions. [2021-11-06 14:44:50,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:44:50,525 INFO L276 IsEmpty]: Start isEmpty. Operand 57147 states and 74818 transitions. [2021-11-06 14:44:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 14:44:50,695 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:44:50,695 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:50,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 14:44:50,696 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:44:50,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:44:50,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1880682150, now seen corresponding path program 1 times [2021-11-06 14:44:50,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:44:50,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905504148] [2021-11-06 14:44:50,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:44:50,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:44:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:44:50,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:44:50,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:44:50,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905504148] [2021-11-06 14:44:50,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905504148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:44:50,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:44:50,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:44:50,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133832594] [2021-11-06 14:44:50,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:44:50,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:44:50,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:44:50,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:44:50,898 INFO L87 Difference]: Start difference. First operand 57147 states and 74818 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:45:07,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:45:07,512 INFO L93 Difference]: Finished difference Result 164679 states and 215526 transitions. [2021-11-06 14:45:07,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:45:07,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-06 14:45:07,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:45:07,851 INFO L225 Difference]: With dead ends: 164679 [2021-11-06 14:45:07,851 INFO L226 Difference]: Without dead ends: 116972 [2021-11-06 14:45:07,918 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:45:08,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116972 states. [2021-11-06 14:45:09,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116972 to 70271. [2021-11-06 14:45:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70271 states, 70270 states have (on average 1.3088942649779423) internal successors, (91976), 70270 states have internal predecessors, (91976), 0 states have call successors, (0), 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 14:45:09,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70271 states to 70271 states and 91976 transitions. [2021-11-06 14:45:09,943 INFO L78 Accepts]: Start accepts. Automaton has 70271 states and 91976 transitions. Word has length 108 [2021-11-06 14:45:09,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:45:09,943 INFO L470 AbstractCegarLoop]: Abstraction has 70271 states and 91976 transitions. [2021-11-06 14:45:09,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:45:09,944 INFO L276 IsEmpty]: Start isEmpty. Operand 70271 states and 91976 transitions. [2021-11-06 14:45:09,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-06 14:45:09,964 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:45:09,965 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:45:09,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 14:45:09,965 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:45:09,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:45:09,966 INFO L85 PathProgramCache]: Analyzing trace with hash -356112904, now seen corresponding path program 1 times [2021-11-06 14:45:09,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:45:09,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022335363] [2021-11-06 14:45:09,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:45:09,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:45:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:45:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:45:10,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:45:10,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022335363] [2021-11-06 14:45:10,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022335363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:45:10,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:45:10,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:45:10,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561851311] [2021-11-06 14:45:10,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:45:10,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:45:10,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:45:10,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:45:10,123 INFO L87 Difference]: Start difference. First operand 70271 states and 91976 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 14:45:18,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:45:18,513 INFO L93 Difference]: Finished difference Result 139349 states and 182324 transitions. [2021-11-06 14:45:18,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:45:18,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-06 14:45:18,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:45:18,717 INFO L225 Difference]: With dead ends: 139349 [2021-11-06 14:45:18,717 INFO L226 Difference]: Without dead ends: 96050 [2021-11-06 14:45:18,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:45:18,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96050 states. [2021-11-06 14:45:20,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96050 to 66791. [2021-11-06 14:45:20,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66791 states, 66790 states have (on average 1.3082197933822428) internal successors, (87376), 66790 states have internal predecessors, (87376), 0 states have call successors, (0), 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 14:45:21,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66791 states to 66791 states and 87376 transitions. [2021-11-06 14:45:21,034 INFO L78 Accepts]: Start accepts. Automaton has 66791 states and 87376 transitions. Word has length 109 [2021-11-06 14:45:21,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:45:21,035 INFO L470 AbstractCegarLoop]: Abstraction has 66791 states and 87376 transitions. [2021-11-06 14:45:21,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 14:45:21,035 INFO L276 IsEmpty]: Start isEmpty. Operand 66791 states and 87376 transitions. [2021-11-06 14:45:21,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-06 14:45:21,050 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:45:21,050 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:45:21,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 14:45:21,051 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:45:21,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:45:21,051 INFO L85 PathProgramCache]: Analyzing trace with hash -16531357, now seen corresponding path program 1 times [2021-11-06 14:45:21,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:45:21,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249134345] [2021-11-06 14:45:21,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:45:21,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:45:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:45:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:45:21,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:45:21,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249134345] [2021-11-06 14:45:21,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249134345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:45:21,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:45:21,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:45:21,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988735538] [2021-11-06 14:45:21,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:45:21,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:45:21,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:45:21,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:45:21,218 INFO L87 Difference]: Start difference. First operand 66791 states and 87376 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 14:45:27,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:45:27,587 INFO L93 Difference]: Finished difference Result 132349 states and 173084 transitions. [2021-11-06 14:45:27,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:45:27,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-06 14:45:27,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:45:27,842 INFO L225 Difference]: With dead ends: 132349 [2021-11-06 14:45:27,843 INFO L226 Difference]: Without dead ends: 92530 [2021-11-06 14:45:27,891 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:45:27,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92530 states. [2021-11-06 14:45:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92530 to 63311. [2021-11-06 14:45:29,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63311 states, 63310 states have (on average 1.3074711735902702) internal successors, (82776), 63310 states have internal predecessors, (82776), 0 states have call successors, (0), 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 14:45:29,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63311 states to 63311 states and 82776 transitions. [2021-11-06 14:45:29,958 INFO L78 Accepts]: Start accepts. Automaton has 63311 states and 82776 transitions. Word has length 110 [2021-11-06 14:45:29,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:45:29,958 INFO L470 AbstractCegarLoop]: Abstraction has 63311 states and 82776 transitions. [2021-11-06 14:45:29,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 14:45:29,959 INFO L276 IsEmpty]: Start isEmpty. Operand 63311 states and 82776 transitions. [2021-11-06 14:45:29,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-06 14:45:29,970 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:45:29,970 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:45:29,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 14:45:29,971 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:45:29,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:45:29,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1422236660, now seen corresponding path program 1 times [2021-11-06 14:45:29,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:45:29,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281018784] [2021-11-06 14:45:29,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:45:29,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:45:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:45:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:45:30,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:45:30,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281018784] [2021-11-06 14:45:30,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281018784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:45:30,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:45:30,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:45:30,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277427338] [2021-11-06 14:45:30,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:45:30,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:45:30,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:45:30,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:45:30,124 INFO L87 Difference]: Start difference. First operand 63311 states and 82776 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 14:45:34,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:45:34,653 INFO L93 Difference]: Finished difference Result 125349 states and 163844 transitions. [2021-11-06 14:45:34,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:45:34,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-06 14:45:34,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:45:34,802 INFO L225 Difference]: With dead ends: 125349 [2021-11-06 14:45:34,802 INFO L226 Difference]: Without dead ends: 89010 [2021-11-06 14:45:34,857 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:45:34,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89010 states. [2021-11-06 14:45:36,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89010 to 59831. [2021-11-06 14:45:36,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59831 states, 59830 states have (on average 1.3066354671569447) internal successors, (78176), 59830 states have internal predecessors, (78176), 0 states have call successors, (0), 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 14:45:37,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59831 states to 59831 states and 78176 transitions. [2021-11-06 14:45:37,063 INFO L78 Accepts]: Start accepts. Automaton has 59831 states and 78176 transitions. Word has length 111 [2021-11-06 14:45:37,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:45:37,063 INFO L470 AbstractCegarLoop]: Abstraction has 59831 states and 78176 transitions. [2021-11-06 14:45:37,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 14:45:37,064 INFO L276 IsEmpty]: Start isEmpty. Operand 59831 states and 78176 transitions. [2021-11-06 14:45:37,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 14:45:37,075 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:45:37,075 INFO L513 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1] [2021-11-06 14:45:37,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 14:45:37,075 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:45:37,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:45:37,076 INFO L85 PathProgramCache]: Analyzing trace with hash 509497701, now seen corresponding path program 1 times [2021-11-06 14:45:37,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:45:37,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374491523] [2021-11-06 14:45:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:45:37,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:45:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:45:37,310 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:45:37,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:45:37,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374491523] [2021-11-06 14:45:37,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374491523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:45:37,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:45:37,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:45:37,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513384139] [2021-11-06 14:45:37,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:45:37,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:45:37,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:45:37,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:45:37,312 INFO L87 Difference]: Start difference. First operand 59831 states and 78176 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:45:56,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:45:56,014 INFO L93 Difference]: Finished difference Result 197587 states and 258004 transitions. [2021-11-06 14:45:56,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 14:45:56,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-06 14:45:56,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:45:56,312 INFO L225 Difference]: With dead ends: 197587 [2021-11-06 14:45:56,312 INFO L226 Difference]: Without dead ends: 145108 [2021-11-06 14:45:56,393 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 14:45:56,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145108 states. [2021-11-06 14:45:59,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145108 to 90785. [2021-11-06 14:45:59,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90785 states, 90784 states have (on average 1.304943602396898) internal successors, (118468), 90784 states have internal predecessors, (118468), 0 states have call successors, (0), 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 14:46:00,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90785 states to 90785 states and 118468 transitions. [2021-11-06 14:46:00,028 INFO L78 Accepts]: Start accepts. Automaton has 90785 states and 118468 transitions. Word has length 113 [2021-11-06 14:46:00,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:46:00,028 INFO L470 AbstractCegarLoop]: Abstraction has 90785 states and 118468 transitions. [2021-11-06 14:46:00,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:00,029 INFO L276 IsEmpty]: Start isEmpty. Operand 90785 states and 118468 transitions. [2021-11-06 14:46:00,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-06 14:46:00,034 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:46:00,034 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:46:00,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 14:46:00,035 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:46:00,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:46:00,035 INFO L85 PathProgramCache]: Analyzing trace with hash -335133522, now seen corresponding path program 1 times [2021-11-06 14:46:00,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:46:00,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885368247] [2021-11-06 14:46:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:46:00,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:46:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:46:00,253 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 14:46:00,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:46:00,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885368247] [2021-11-06 14:46:00,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885368247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:46:00,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:46:00,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:46:00,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439017312] [2021-11-06 14:46:00,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:46:00,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:46:00,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:46:00,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:46:00,255 INFO L87 Difference]: Start difference. First operand 90785 states and 118468 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 14:46:03,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:46:03,622 INFO L93 Difference]: Finished difference Result 133571 states and 174230 transitions. [2021-11-06 14:46:03,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:46:03,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 119 [2021-11-06 14:46:03,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:46:03,917 INFO L225 Difference]: With dead ends: 133571 [2021-11-06 14:46:03,917 INFO L226 Difference]: Without dead ends: 85224 [2021-11-06 14:46:03,969 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:46:04,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85224 states. [2021-11-06 14:46:06,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85224 to 42797. [2021-11-06 14:46:06,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42797 states, 42796 states have (on average 1.3025516403402186) internal successors, (55744), 42796 states have internal predecessors, (55744), 0 states have call successors, (0), 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 14:46:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42797 states to 42797 states and 55744 transitions. [2021-11-06 14:46:06,441 INFO L78 Accepts]: Start accepts. Automaton has 42797 states and 55744 transitions. Word has length 119 [2021-11-06 14:46:06,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:46:06,441 INFO L470 AbstractCegarLoop]: Abstraction has 42797 states and 55744 transitions. [2021-11-06 14:46:06,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 14:46:06,442 INFO L276 IsEmpty]: Start isEmpty. Operand 42797 states and 55744 transitions. [2021-11-06 14:46:06,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-11-06 14:46:06,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:46:06,448 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:46:06,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 14:46:06,449 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:46:06,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:46:06,449 INFO L85 PathProgramCache]: Analyzing trace with hash -322984475, now seen corresponding path program 1 times [2021-11-06 14:46:06,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:46:06,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618934018] [2021-11-06 14:46:06,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:46:06,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:46:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:46:06,717 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:46:06,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:46:06,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618934018] [2021-11-06 14:46:06,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618934018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:46:06,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:46:06,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:46:06,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031411984] [2021-11-06 14:46:06,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:46:06,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:46:06,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:46:06,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:46:06,722 INFO L87 Difference]: Start difference. First operand 42797 states and 55744 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)