./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash bfc29f03d3be9b41eb07ac14f0f7eac45bf3a60a4a6601e3132f720b72534d53 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 08:33:48,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 08:33:48,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 08:33:48,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 08:33:48,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 08:33:48,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 08:33:48,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 08:33:48,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 08:33:48,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 08:33:48,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 08:33:48,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 08:33:48,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 08:33:48,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 08:33:48,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 08:33:48,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 08:33:48,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 08:33:48,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 08:33:48,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 08:33:48,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 08:33:48,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 08:33:48,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 08:33:48,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 08:33:48,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 08:33:48,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 08:33:48,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 08:33:48,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 08:33:48,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 08:33:48,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 08:33:48,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 08:33:48,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 08:33:48,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 08:33:48,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 08:33:48,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 08:33:48,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 08:33:48,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 08:33:48,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 08:33:48,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 08:33:48,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 08:33:48,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 08:33:48,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 08:33:48,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 08:33:48,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 08:33:48,406 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 08:33:48,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 08:33:48,410 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 08:33:48,411 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 08:33:48,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 08:33:48,411 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 08:33:48,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 08:33:48,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 08:33:48,412 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 08:33:48,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 08:33:48,413 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 08:33:48,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 08:33:48,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 08:33:48,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 08:33:48,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 08:33:48,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 08:33:48,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 08:33:48,417 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 08:33:48,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 08:33:48,417 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 08:33:48,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 08:33:48,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 08:33:48,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 08:33:48,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 08:33:48,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 08:33:48,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 08:33:48,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 08:33:48,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 08:33:48,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 08:33:48,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 08:33:48,419 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 08:33:48,419 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 08:33:48,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 08:33:48,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 08:33:48,420 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc29f03d3be9b41eb07ac14f0f7eac45bf3a60a4a6601e3132f720b72534d53 [2021-12-22 08:33:48,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 08:33:48,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 08:33:48,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 08:33:48,606 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 08:33:48,607 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 08:33:48,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2021-12-22 08:33:48,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27667ca9d/e2988d014ce34af7916baf0a381fa383/FLAG03f802e58 [2021-12-22 08:33:49,135 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 08:33:49,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2021-12-22 08:33:49,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27667ca9d/e2988d014ce34af7916baf0a381fa383/FLAG03f802e58 [2021-12-22 08:33:49,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27667ca9d/e2988d014ce34af7916baf0a381fa383 [2021-12-22 08:33:49,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 08:33:49,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 08:33:49,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 08:33:49,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 08:33:49,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 08:33:49,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:33:49" (1/1) ... [2021-12-22 08:33:49,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@752520cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:49, skipping insertion in model container [2021-12-22 08:33:49,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:33:49" (1/1) ... [2021-12-22 08:33:49,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 08:33:49,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 08:33:49,328 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2021-12-22 08:33:49,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 08:33:49,467 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 08:33:49,477 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2021-12-22 08:33:49,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 08:33:49,576 INFO L208 MainTranslator]: Completed translation [2021-12-22 08:33:49,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:49 WrapperNode [2021-12-22 08:33:49,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 08:33:49,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 08:33:49,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 08:33:49,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 08:33:49,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:49" (1/1) ... [2021-12-22 08:33:49,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:49" (1/1) ... [2021-12-22 08:33:49,657 INFO L137 Inliner]: procedures = 41, calls = 108, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 1583 [2021-12-22 08:33:49,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 08:33:49,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 08:33:49,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 08:33:49,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 08:33:49,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:49" (1/1) ... [2021-12-22 08:33:49,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:49" (1/1) ... [2021-12-22 08:33:49,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:49" (1/1) ... [2021-12-22 08:33:49,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:49" (1/1) ... [2021-12-22 08:33:49,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:49" (1/1) ... [2021-12-22 08:33:49,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:49" (1/1) ... [2021-12-22 08:33:49,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:49" (1/1) ... [2021-12-22 08:33:49,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 08:33:49,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 08:33:49,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 08:33:49,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 08:33:49,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:49" (1/1) ... [2021-12-22 08:33:49,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 08:33:49,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:33:49,764 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) [2021-12-22 08:33:49,786 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 [2021-12-22 08:33:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2021-12-22 08:33:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2021-12-22 08:33:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 08:33:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2021-12-22 08:33:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2021-12-22 08:33:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-12-22 08:33:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-12-22 08:33:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2021-12-22 08:33:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2021-12-22 08:33:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-22 08:33:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-22 08:33:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-22 08:33:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-22 08:33:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2021-12-22 08:33:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2021-12-22 08:33:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-12-22 08:33:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-12-22 08:33:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2021-12-22 08:33:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2021-12-22 08:33:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-22 08:33:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-22 08:33:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 08:33:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-22 08:33:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-22 08:33:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2021-12-22 08:33:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2021-12-22 08:33:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 08:33:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 08:33:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2021-12-22 08:33:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2021-12-22 08:33:50,036 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 08:33:50,037 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 08:33:50,100 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:33:50,132 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-12-22 08:33:50,133 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-12-22 08:33:50,183 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:33:50,193 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-22 08:33:50,193 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-22 08:33:50,197 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:33:50,197 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:33:50,199 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:33:50,205 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:33:50,211 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:33:50,212 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:33:50,214 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:33:50,683 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: CdAudioPnp_#res#1 := 0; [2021-12-22 08:33:50,683 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##258: assume !false; [2021-12-22 08:33:50,683 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##257: assume false; [2021-12-22 08:33:50,684 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##286: assume !false; [2021-12-22 08:33:50,684 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##285: assume false; [2021-12-22 08:33:50,684 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !false; [2021-12-22 08:33:50,684 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume false; [2021-12-22 08:33:50,684 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##133: assume false; [2021-12-22 08:33:50,684 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##134: assume !false; [2021-12-22 08:33:50,685 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2021-12-22 08:33:50,685 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2021-12-22 08:33:50,685 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-12-22 08:33:50,686 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-12-22 08:33:50,686 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##331: assume false; [2021-12-22 08:33:50,686 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##332: assume !false; [2021-12-22 08:33:50,711 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 08:33:50,724 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 08:33:50,724 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 08:33:50,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:33:50 BoogieIcfgContainer [2021-12-22 08:33:50,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 08:33:50,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 08:33:50,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 08:33:50,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 08:33:50,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:33:49" (1/3) ... [2021-12-22 08:33:50,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d02b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:33:50, skipping insertion in model container [2021-12-22 08:33:50,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:49" (2/3) ... [2021-12-22 08:33:50,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d02b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:33:50, skipping insertion in model container [2021-12-22 08:33:50,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:33:50" (3/3) ... [2021-12-22 08:33:50,733 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.c [2021-12-22 08:33:50,737 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 08:33:50,737 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 08:33:50,780 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 08:33:50,784 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 [2021-12-22 08:33:50,785 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 08:33:50,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 470 states, 368 states have (on average 1.5081521739130435) internal successors, (555), 387 states have internal predecessors, (555), 87 states have call successors, (87), 13 states have call predecessors, (87), 13 states have return successors, (87), 82 states have call predecessors, (87), 87 states have call successors, (87) [2021-12-22 08:33:50,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 08:33:50,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:50,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:50,820 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:50,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:50,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1469618458, now seen corresponding path program 1 times [2021-12-22 08:33:50,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:50,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389399152] [2021-12-22 08:33:50,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:50,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:50,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:50,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389399152] [2021-12-22 08:33:50,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389399152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:50,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:50,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:33:50,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461526372] [2021-12-22 08:33:50,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:50,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:33:50,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:51,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:33:51,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:33:51,008 INFO L87 Difference]: Start difference. First operand has 470 states, 368 states have (on average 1.5081521739130435) internal successors, (555), 387 states have internal predecessors, (555), 87 states have call successors, (87), 13 states have call predecessors, (87), 13 states have return successors, (87), 82 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:51,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:51,142 INFO L93 Difference]: Finished difference Result 813 states and 1302 transitions. [2021-12-22 08:33:51,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:33:51,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-22 08:33:51,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:51,157 INFO L225 Difference]: With dead ends: 813 [2021-12-22 08:33:51,157 INFO L226 Difference]: Without dead ends: 463 [2021-12-22 08:33:51,162 INFO L932 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 [2021-12-22 08:33:51,164 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 8 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:51,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 1357 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:33:51,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-12-22 08:33:51,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2021-12-22 08:33:51,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 363 states have (on average 1.4765840220385675) internal successors, (536), 380 states have internal predecessors, (536), 87 states have call successors, (87), 13 states have call predecessors, (87), 12 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-12-22 08:33:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 694 transitions. [2021-12-22 08:33:51,237 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 694 transitions. Word has length 13 [2021-12-22 08:33:51,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:51,237 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 694 transitions. [2021-12-22 08:33:51,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:51,237 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 694 transitions. [2021-12-22 08:33:51,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-22 08:33:51,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:51,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:51,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 08:33:51,239 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:51,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:51,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1712839840, now seen corresponding path program 1 times [2021-12-22 08:33:51,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:51,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370735089] [2021-12-22 08:33:51,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:51,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:51,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:51,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:51,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370735089] [2021-12-22 08:33:51,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370735089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:51,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:51,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:33:51,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755952629] [2021-12-22 08:33:51,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:51,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:33:51,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:51,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:33:51,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:33:51,279 INFO L87 Difference]: Start difference. First operand 463 states and 694 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:51,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:51,427 INFO L93 Difference]: Finished difference Result 708 states and 1039 transitions. [2021-12-22 08:33:51,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:33:51,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-22 08:33:51,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:51,435 INFO L225 Difference]: With dead ends: 708 [2021-12-22 08:33:51,435 INFO L226 Difference]: Without dead ends: 601 [2021-12-22 08:33:51,439 INFO L932 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 [2021-12-22 08:33:51,441 INFO L933 BasicCegarLoop]: 828 mSDtfsCounter, 569 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:51,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 1055 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:33:51,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-12-22 08:33:51,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 581. [2021-12-22 08:33:51,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 467 states have (on average 1.436830835117773) internal successors, (671), 470 states have internal predecessors, (671), 93 states have call successors, (93), 21 states have call predecessors, (93), 20 states have return successors, (97), 91 states have call predecessors, (97), 81 states have call successors, (97) [2021-12-22 08:33:51,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 861 transitions. [2021-12-22 08:33:51,488 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 861 transitions. Word has length 15 [2021-12-22 08:33:51,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:51,488 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 861 transitions. [2021-12-22 08:33:51,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:51,488 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 861 transitions. [2021-12-22 08:33:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-22 08:33:51,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:51,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:51,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 08:33:51,489 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:51,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:51,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1900703522, now seen corresponding path program 1 times [2021-12-22 08:33:51,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:51,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213924808] [2021-12-22 08:33:51,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:51,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:51,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:51,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213924808] [2021-12-22 08:33:51,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213924808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:51,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:51,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:33:51,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081757765] [2021-12-22 08:33:51,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:51,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:33:51,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:51,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:33:51,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:33:51,565 INFO L87 Difference]: Start difference. First operand 581 states and 861 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:51,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:51,602 INFO L93 Difference]: Finished difference Result 864 states and 1250 transitions. [2021-12-22 08:33:51,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:33:51,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-22 08:33:51,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:51,609 INFO L225 Difference]: With dead ends: 864 [2021-12-22 08:33:51,609 INFO L226 Difference]: Without dead ends: 727 [2021-12-22 08:33:51,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:33:51,615 INFO L933 BasicCegarLoop]: 684 mSDtfsCounter, 608 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:51,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 874 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:33:51,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-12-22 08:33:51,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 689. [2021-12-22 08:33:51,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 565 states have (on average 1.4336283185840708) internal successors, (810), 564 states have internal predecessors, (810), 94 states have call successors, (94), 26 states have call predecessors, (94), 29 states have return successors, (110), 98 states have call predecessors, (110), 85 states have call successors, (110) [2021-12-22 08:33:51,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1014 transitions. [2021-12-22 08:33:51,657 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1014 transitions. Word has length 19 [2021-12-22 08:33:51,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:51,658 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 1014 transitions. [2021-12-22 08:33:51,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:51,658 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1014 transitions. [2021-12-22 08:33:51,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 08:33:51,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:51,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:51,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 08:33:51,663 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:51,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:51,664 INFO L85 PathProgramCache]: Analyzing trace with hash 2011147442, now seen corresponding path program 1 times [2021-12-22 08:33:51,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:51,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016808376] [2021-12-22 08:33:51,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:51,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:51,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:51,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:51,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016808376] [2021-12-22 08:33:51,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016808376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:51,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:51,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:33:51,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930993941] [2021-12-22 08:33:51,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:51,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:33:51,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:51,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:33:51,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:33:51,702 INFO L87 Difference]: Start difference. First operand 689 states and 1014 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:51,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:51,820 INFO L93 Difference]: Finished difference Result 1296 states and 1967 transitions. [2021-12-22 08:33:51,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:33:51,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-22 08:33:51,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:51,827 INFO L225 Difference]: With dead ends: 1296 [2021-12-22 08:33:51,828 INFO L226 Difference]: Without dead ends: 1061 [2021-12-22 08:33:51,829 INFO L932 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 [2021-12-22 08:33:51,835 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 341 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:51,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 1631 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:33:51,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2021-12-22 08:33:51,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 821. [2021-12-22 08:33:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 674 states have (on average 1.4347181008902077) internal successors, (967), 672 states have internal predecessors, (967), 107 states have call successors, (107), 34 states have call predecessors, (107), 39 states have return successors, (172), 114 states have call predecessors, (172), 98 states have call successors, (172) [2021-12-22 08:33:51,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1246 transitions. [2021-12-22 08:33:51,883 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1246 transitions. Word has length 21 [2021-12-22 08:33:51,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:51,883 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 1246 transitions. [2021-12-22 08:33:51,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:51,887 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1246 transitions. [2021-12-22 08:33:51,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 08:33:51,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:51,889 INFO L514 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] [2021-12-22 08:33:51,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 08:33:51,889 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:51,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:51,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1977476652, now seen corresponding path program 1 times [2021-12-22 08:33:51,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:51,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707309350] [2021-12-22 08:33:51,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:51,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:51,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:51,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707309350] [2021-12-22 08:33:51,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707309350] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:51,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:51,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 08:33:51,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249957053] [2021-12-22 08:33:51,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:51,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 08:33:51,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:51,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 08:33:51,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:33:51,974 INFO L87 Difference]: Start difference. First operand 821 states and 1246 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:52,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:52,318 INFO L93 Difference]: Finished difference Result 1378 states and 2097 transitions. [2021-12-22 08:33:52,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 08:33:52,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-22 08:33:52,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:52,322 INFO L225 Difference]: With dead ends: 1378 [2021-12-22 08:33:52,322 INFO L226 Difference]: Without dead ends: 833 [2021-12-22 08:33:52,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:33:52,324 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 1032 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:52,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1033 Valid, 877 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:33:52,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2021-12-22 08:33:52,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 809. [2021-12-22 08:33:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 664 states have (on average 1.4292168674698795) internal successors, (949), 662 states have internal predecessors, (949), 105 states have call successors, (105), 32 states have call predecessors, (105), 39 states have return successors, (168), 114 states have call predecessors, (168), 96 states have call successors, (168) [2021-12-22 08:33:52,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1222 transitions. [2021-12-22 08:33:52,358 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1222 transitions. Word has length 22 [2021-12-22 08:33:52,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:52,359 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 1222 transitions. [2021-12-22 08:33:52,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:52,359 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1222 transitions. [2021-12-22 08:33:52,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-22 08:33:52,360 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:52,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:52,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 08:33:52,361 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:52,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:52,362 INFO L85 PathProgramCache]: Analyzing trace with hash -401986458, now seen corresponding path program 1 times [2021-12-22 08:33:52,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:52,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785370812] [2021-12-22 08:33:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:52,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:52,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:52,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785370812] [2021-12-22 08:33:52,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785370812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:52,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:52,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:33:52,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266275652] [2021-12-22 08:33:52,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:52,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:33:52,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:52,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:33:52,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:33:52,394 INFO L87 Difference]: Start difference. First operand 809 states and 1222 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:52,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:52,438 INFO L93 Difference]: Finished difference Result 812 states and 1224 transitions. [2021-12-22 08:33:52,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:33:52,438 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-22 08:33:52,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:52,441 INFO L225 Difference]: With dead ends: 812 [2021-12-22 08:33:52,442 INFO L226 Difference]: Without dead ends: 808 [2021-12-22 08:33:52,442 INFO L932 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 [2021-12-22 08:33:52,442 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 22 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:52,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1258 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:33:52,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-12-22 08:33:52,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2021-12-22 08:33:52,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 664 states have (on average 1.4262048192771084) internal successors, (947), 661 states have internal predecessors, (947), 104 states have call successors, (104), 32 states have call predecessors, (104), 39 states have return successors, (168), 114 states have call predecessors, (168), 96 states have call successors, (168) [2021-12-22 08:33:52,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1219 transitions. [2021-12-22 08:33:52,467 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1219 transitions. Word has length 23 [2021-12-22 08:33:52,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:52,467 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 1219 transitions. [2021-12-22 08:33:52,467 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:52,468 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1219 transitions. [2021-12-22 08:33:52,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 08:33:52,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:52,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:52,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 08:33:52,469 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:52,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:52,469 INFO L85 PathProgramCache]: Analyzing trace with hash 18720905, now seen corresponding path program 1 times [2021-12-22 08:33:52,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:52,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458996457] [2021-12-22 08:33:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:52,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:52,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:52,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458996457] [2021-12-22 08:33:52,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458996457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:52,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:52,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 08:33:52,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495303966] [2021-12-22 08:33:52,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:52,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 08:33:52,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:52,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 08:33:52,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:33:52,494 INFO L87 Difference]: Start difference. First operand 808 states and 1219 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:52,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:52,573 INFO L93 Difference]: Finished difference Result 1228 states and 1788 transitions. [2021-12-22 08:33:52,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 08:33:52,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-22 08:33:52,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:52,577 INFO L225 Difference]: With dead ends: 1228 [2021-12-22 08:33:52,577 INFO L226 Difference]: Without dead ends: 812 [2021-12-22 08:33:52,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:33:52,578 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 323 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:52,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 1958 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:33:52,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-12-22 08:33:52,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 683. [2021-12-22 08:33:52,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 560 states have (on average 1.4089285714285715) internal successors, (789), 559 states have internal predecessors, (789), 89 states have call successors, (89), 28 states have call predecessors, (89), 33 states have return successors, (109), 95 states have call predecessors, (109), 81 states have call successors, (109) [2021-12-22 08:33:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 987 transitions. [2021-12-22 08:33:52,600 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 987 transitions. Word has length 28 [2021-12-22 08:33:52,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:52,601 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 987 transitions. [2021-12-22 08:33:52,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:52,601 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 987 transitions. [2021-12-22 08:33:52,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 08:33:52,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:52,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:52,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 08:33:52,602 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:52,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:52,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1728135655, now seen corresponding path program 1 times [2021-12-22 08:33:52,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:52,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988417127] [2021-12-22 08:33:52,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:52,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:52,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:52,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988417127] [2021-12-22 08:33:52,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988417127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:52,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:52,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:33:52,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952084938] [2021-12-22 08:33:52,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:52,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:33:52,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:52,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:33:52,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:33:52,627 INFO L87 Difference]: Start difference. First operand 683 states and 987 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:52,660 INFO L93 Difference]: Finished difference Result 768 states and 1098 transitions. [2021-12-22 08:33:52,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:33:52,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-22 08:33:52,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:52,663 INFO L225 Difference]: With dead ends: 768 [2021-12-22 08:33:52,663 INFO L226 Difference]: Without dead ends: 748 [2021-12-22 08:33:52,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:33:52,664 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 628 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:52,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 721 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:33:52,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-12-22 08:33:52,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 711. [2021-12-22 08:33:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 586 states have (on average 1.418088737201365) internal successors, (831), 592 states have internal predecessors, (831), 89 states have call successors, (89), 29 states have call predecessors, (89), 35 states have return successors, (104), 89 states have call predecessors, (104), 82 states have call successors, (104) [2021-12-22 08:33:52,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1024 transitions. [2021-12-22 08:33:52,686 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1024 transitions. Word has length 29 [2021-12-22 08:33:52,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:52,686 INFO L470 AbstractCegarLoop]: Abstraction has 711 states and 1024 transitions. [2021-12-22 08:33:52,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:52,686 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1024 transitions. [2021-12-22 08:33:52,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-22 08:33:52,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:52,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:52,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 08:33:52,688 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:52,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash -881374565, now seen corresponding path program 1 times [2021-12-22 08:33:52,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:52,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396799196] [2021-12-22 08:33:52,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:52,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:52,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 08:33:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:52,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:52,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:52,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396799196] [2021-12-22 08:33:52,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396799196] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:52,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:52,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 08:33:52,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032490863] [2021-12-22 08:33:52,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:52,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 08:33:52,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:52,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 08:33:52,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:33:52,714 INFO L87 Difference]: Start difference. First operand 711 states and 1024 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:33:52,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:52,900 INFO L93 Difference]: Finished difference Result 1007 states and 1455 transitions. [2021-12-22 08:33:52,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 08:33:52,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-12-22 08:33:52,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:52,904 INFO L225 Difference]: With dead ends: 1007 [2021-12-22 08:33:52,904 INFO L226 Difference]: Without dead ends: 780 [2021-12-22 08:33:52,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:33:52,906 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 254 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:52,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 1782 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:33:52,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-12-22 08:33:52,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 694. [2021-12-22 08:33:52,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 571 states have (on average 1.4133099824868651) internal successors, (807), 579 states have internal predecessors, (807), 88 states have call successors, (88), 28 states have call predecessors, (88), 34 states have return successors, (100), 86 states have call predecessors, (100), 81 states have call successors, (100) [2021-12-22 08:33:52,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 995 transitions. [2021-12-22 08:33:52,930 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 995 transitions. Word has length 35 [2021-12-22 08:33:52,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:52,930 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 995 transitions. [2021-12-22 08:33:52,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:33:52,931 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 995 transitions. [2021-12-22 08:33:52,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 08:33:52,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:52,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:52,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 08:33:52,934 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:52,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:52,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1008894041, now seen corresponding path program 1 times [2021-12-22 08:33:52,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:52,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438983447] [2021-12-22 08:33:52,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:52,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:52,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:52,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438983447] [2021-12-22 08:33:52,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438983447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:52,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:52,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 08:33:52,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453692745] [2021-12-22 08:33:52,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:52,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 08:33:52,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:52,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 08:33:52,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:33:52,962 INFO L87 Difference]: Start difference. First operand 694 states and 995 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:53,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:53,136 INFO L93 Difference]: Finished difference Result 754 states and 1071 transitions. [2021-12-22 08:33:53,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 08:33:53,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-22 08:33:53,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:53,139 INFO L225 Difference]: With dead ends: 754 [2021-12-22 08:33:53,139 INFO L226 Difference]: Without dead ends: 712 [2021-12-22 08:33:53,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:33:53,140 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 696 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:53,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 1109 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:33:53,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-12-22 08:33:53,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 694. [2021-12-22 08:33:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 571 states have (on average 1.4098073555166375) internal successors, (805), 579 states have internal predecessors, (805), 88 states have call successors, (88), 28 states have call predecessors, (88), 34 states have return successors, (100), 86 states have call predecessors, (100), 81 states have call successors, (100) [2021-12-22 08:33:53,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 993 transitions. [2021-12-22 08:33:53,169 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 993 transitions. Word has length 32 [2021-12-22 08:33:53,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:53,170 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 993 transitions. [2021-12-22 08:33:53,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:53,171 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 993 transitions. [2021-12-22 08:33:53,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-22 08:33:53,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:53,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:53,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 08:33:53,173 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:53,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:53,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1219758973, now seen corresponding path program 1 times [2021-12-22 08:33:53,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:53,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911861537] [2021-12-22 08:33:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:53,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:53,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 08:33:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:53,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:53,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911861537] [2021-12-22 08:33:53,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911861537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:53,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:53,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 08:33:53,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69014592] [2021-12-22 08:33:53,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:53,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 08:33:53,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:53,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 08:33:53,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:33:53,216 INFO L87 Difference]: Start difference. First operand 694 states and 993 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:33:53,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:53,369 INFO L93 Difference]: Finished difference Result 779 states and 1121 transitions. [2021-12-22 08:33:53,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 08:33:53,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-12-22 08:33:53,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:53,372 INFO L225 Difference]: With dead ends: 779 [2021-12-22 08:33:53,372 INFO L226 Difference]: Without dead ends: 719 [2021-12-22 08:33:53,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:33:53,373 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 706 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:53,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 1261 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:33:53,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-12-22 08:33:53,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 683. [2021-12-22 08:33:53,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 564 states have (on average 1.4113475177304964) internal successors, (796), 572 states have internal predecessors, (796), 86 states have call successors, (86), 26 states have call predecessors, (86), 32 states have return successors, (98), 84 states have call predecessors, (98), 79 states have call successors, (98) [2021-12-22 08:33:53,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 980 transitions. [2021-12-22 08:33:53,396 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 980 transitions. Word has length 36 [2021-12-22 08:33:53,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:53,396 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 980 transitions. [2021-12-22 08:33:53,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:33:53,396 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 980 transitions. [2021-12-22 08:33:53,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-22 08:33:53,397 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:53,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:53,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 08:33:53,398 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:53,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:53,398 INFO L85 PathProgramCache]: Analyzing trace with hash 138802018, now seen corresponding path program 1 times [2021-12-22 08:33:53,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:53,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363949367] [2021-12-22 08:33:53,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:53,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:53,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:53,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363949367] [2021-12-22 08:33:53,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363949367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:53,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:53,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:33:53,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967388272] [2021-12-22 08:33:53,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:53,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:33:53,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:53,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:33:53,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:33:53,425 INFO L87 Difference]: Start difference. First operand 683 states and 980 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:53,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:53,493 INFO L93 Difference]: Finished difference Result 851 states and 1212 transitions. [2021-12-22 08:33:53,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:33:53,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-22 08:33:53,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:53,496 INFO L225 Difference]: With dead ends: 851 [2021-12-22 08:33:53,497 INFO L226 Difference]: Without dead ends: 835 [2021-12-22 08:33:53,497 INFO L932 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 [2021-12-22 08:33:53,497 INFO L933 BasicCegarLoop]: 772 mSDtfsCounter, 135 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:53,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 1388 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:33:53,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2021-12-22 08:33:53,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 734. [2021-12-22 08:33:53,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 611 states have (on average 1.386252045826514) internal successors, (847), 612 states have internal predecessors, (847), 86 states have call successors, (86), 26 states have call predecessors, (86), 36 states have return successors, (109), 95 states have call predecessors, (109), 79 states have call successors, (109) [2021-12-22 08:33:53,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1042 transitions. [2021-12-22 08:33:53,546 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1042 transitions. Word has length 34 [2021-12-22 08:33:53,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:53,547 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1042 transitions. [2021-12-22 08:33:53,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:53,547 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1042 transitions. [2021-12-22 08:33:53,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-22 08:33:53,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:53,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:53,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 08:33:53,549 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:53,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:53,549 INFO L85 PathProgramCache]: Analyzing trace with hash -298326112, now seen corresponding path program 1 times [2021-12-22 08:33:53,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:53,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614626774] [2021-12-22 08:33:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:53,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:53,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:53,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614626774] [2021-12-22 08:33:53,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614626774] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:53,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:53,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 08:33:53,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784709744] [2021-12-22 08:33:53,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:53,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 08:33:53,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:53,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 08:33:53,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:33:53,605 INFO L87 Difference]: Start difference. First operand 734 states and 1042 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:53,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:53,801 INFO L93 Difference]: Finished difference Result 762 states and 1073 transitions. [2021-12-22 08:33:53,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 08:33:53,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-22 08:33:53,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:53,805 INFO L225 Difference]: With dead ends: 762 [2021-12-22 08:33:53,805 INFO L226 Difference]: Without dead ends: 715 [2021-12-22 08:33:53,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:33:53,806 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 674 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:53,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 1105 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:33:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2021-12-22 08:33:53,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 705. [2021-12-22 08:33:53,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 585 states have (on average 1.3914529914529914) internal successors, (814), 592 states have internal predecessors, (814), 86 states have call successors, (86), 26 states have call predecessors, (86), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2021-12-22 08:33:53,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 998 transitions. [2021-12-22 08:33:53,838 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 998 transitions. Word has length 34 [2021-12-22 08:33:53,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:53,838 INFO L470 AbstractCegarLoop]: Abstraction has 705 states and 998 transitions. [2021-12-22 08:33:53,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:53,839 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 998 transitions. [2021-12-22 08:33:53,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-22 08:33:53,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:53,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:53,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 08:33:53,840 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:53,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:53,841 INFO L85 PathProgramCache]: Analyzing trace with hash 452395620, now seen corresponding path program 1 times [2021-12-22 08:33:53,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:53,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490816271] [2021-12-22 08:33:53,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:53,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:53,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:53,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:53,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490816271] [2021-12-22 08:33:53,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490816271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:53,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:53,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 08:33:53,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543449734] [2021-12-22 08:33:53,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:53,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 08:33:53,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:53,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 08:33:53,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:33:53,892 INFO L87 Difference]: Start difference. First operand 705 states and 998 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:54,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:54,121 INFO L93 Difference]: Finished difference Result 806 states and 1144 transitions. [2021-12-22 08:33:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 08:33:54,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-22 08:33:54,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:54,124 INFO L225 Difference]: With dead ends: 806 [2021-12-22 08:33:54,125 INFO L226 Difference]: Without dead ends: 802 [2021-12-22 08:33:54,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:33:54,125 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 747 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:54,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 1199 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:33:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2021-12-22 08:33:54,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 708. [2021-12-22 08:33:54,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 588 states have (on average 1.3911564625850341) internal successors, (818), 595 states have internal predecessors, (818), 86 states have call successors, (86), 26 states have call predecessors, (86), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2021-12-22 08:33:54,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1002 transitions. [2021-12-22 08:33:54,161 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1002 transitions. Word has length 35 [2021-12-22 08:33:54,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:54,161 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 1002 transitions. [2021-12-22 08:33:54,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:54,161 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1002 transitions. [2021-12-22 08:33:54,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-22 08:33:54,162 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:54,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:54,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 08:33:54,162 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:54,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:54,163 INFO L85 PathProgramCache]: Analyzing trace with hash 452672450, now seen corresponding path program 1 times [2021-12-22 08:33:54,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:54,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326102673] [2021-12-22 08:33:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:54,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:54,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:54,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326102673] [2021-12-22 08:33:54,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326102673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:54,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:54,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 08:33:54,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115524000] [2021-12-22 08:33:54,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:54,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 08:33:54,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:54,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 08:33:54,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:33:54,191 INFO L87 Difference]: Start difference. First operand 708 states and 1002 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:54,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:54,253 INFO L93 Difference]: Finished difference Result 721 states and 1015 transitions. [2021-12-22 08:33:54,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 08:33:54,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-22 08:33:54,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:54,256 INFO L225 Difference]: With dead ends: 721 [2021-12-22 08:33:54,256 INFO L226 Difference]: Without dead ends: 691 [2021-12-22 08:33:54,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 08:33:54,257 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 38 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3207 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:54,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 3207 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:33:54,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2021-12-22 08:33:54,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2021-12-22 08:33:54,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 571 states have (on average 1.3975481611208407) internal successors, (798), 578 states have internal predecessors, (798), 86 states have call successors, (86), 26 states have call predecessors, (86), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2021-12-22 08:33:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 982 transitions. [2021-12-22 08:33:54,286 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 982 transitions. Word has length 35 [2021-12-22 08:33:54,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:54,286 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 982 transitions. [2021-12-22 08:33:54,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:33:54,286 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 982 transitions. [2021-12-22 08:33:54,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-22 08:33:54,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:54,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:54,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 08:33:54,287 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:54,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:54,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1417116411, now seen corresponding path program 1 times [2021-12-22 08:33:54,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:54,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637978032] [2021-12-22 08:33:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:54,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:54,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 08:33:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:54,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:54,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637978032] [2021-12-22 08:33:54,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637978032] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:54,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:54,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 08:33:54,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400441429] [2021-12-22 08:33:54,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:54,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 08:33:54,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:54,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 08:33:54,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:33:54,310 INFO L87 Difference]: Start difference. First operand 691 states and 982 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:33:54,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:54,490 INFO L93 Difference]: Finished difference Result 732 states and 1051 transitions. [2021-12-22 08:33:54,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 08:33:54,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-12-22 08:33:54,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:54,493 INFO L225 Difference]: With dead ends: 732 [2021-12-22 08:33:54,493 INFO L226 Difference]: Without dead ends: 725 [2021-12-22 08:33:54,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:33:54,494 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 153 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:54,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 1553 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:33:54,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-12-22 08:33:54,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 705. [2021-12-22 08:33:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 585 states have (on average 1.393162393162393) internal successors, (815), 592 states have internal predecessors, (815), 86 states have call successors, (86), 26 states have call predecessors, (86), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2021-12-22 08:33:54,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 999 transitions. [2021-12-22 08:33:54,524 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 999 transitions. Word has length 37 [2021-12-22 08:33:54,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:54,525 INFO L470 AbstractCegarLoop]: Abstraction has 705 states and 999 transitions. [2021-12-22 08:33:54,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:33:54,525 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 999 transitions. [2021-12-22 08:33:54,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-22 08:33:54,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:54,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:54,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 08:33:54,526 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:54,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:54,526 INFO L85 PathProgramCache]: Analyzing trace with hash 607738208, now seen corresponding path program 1 times [2021-12-22 08:33:54,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:54,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363812690] [2021-12-22 08:33:54,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:54,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:54,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 08:33:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:54,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:54,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363812690] [2021-12-22 08:33:54,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363812690] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:54,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:54,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 08:33:54,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329207863] [2021-12-22 08:33:54,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:54,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 08:33:54,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:54,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 08:33:54,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:33:54,575 INFO L87 Difference]: Start difference. First operand 705 states and 999 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:33:54,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:54,904 INFO L93 Difference]: Finished difference Result 731 states and 1047 transitions. [2021-12-22 08:33:54,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 08:33:54,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-12-22 08:33:54,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:54,907 INFO L225 Difference]: With dead ends: 731 [2021-12-22 08:33:54,907 INFO L226 Difference]: Without dead ends: 725 [2021-12-22 08:33:54,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 08:33:54,908 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 750 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:54,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 1884 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:33:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-12-22 08:33:54,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 705. [2021-12-22 08:33:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 585 states have (on average 1.3914529914529914) internal successors, (814), 592 states have internal predecessors, (814), 86 states have call successors, (86), 26 states have call predecessors, (86), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2021-12-22 08:33:54,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 998 transitions. [2021-12-22 08:33:54,950 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 998 transitions. Word has length 39 [2021-12-22 08:33:54,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:54,950 INFO L470 AbstractCegarLoop]: Abstraction has 705 states and 998 transitions. [2021-12-22 08:33:54,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:33:54,950 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 998 transitions. [2021-12-22 08:33:54,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-22 08:33:54,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:54,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:54,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 08:33:54,952 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:54,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:54,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1973073460, now seen corresponding path program 1 times [2021-12-22 08:33:54,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:54,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966270233] [2021-12-22 08:33:54,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:54,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:54,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 08:33:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:55,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:55,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:55,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966270233] [2021-12-22 08:33:55,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966270233] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:55,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:55,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 08:33:55,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688926888] [2021-12-22 08:33:55,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:55,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 08:33:55,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:55,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 08:33:55,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:33:55,004 INFO L87 Difference]: Start difference. First operand 705 states and 998 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:33:55,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:55,291 INFO L93 Difference]: Finished difference Result 744 states and 1063 transitions. [2021-12-22 08:33:55,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 08:33:55,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-12-22 08:33:55,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:55,295 INFO L225 Difference]: With dead ends: 744 [2021-12-22 08:33:55,295 INFO L226 Difference]: Without dead ends: 712 [2021-12-22 08:33:55,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-12-22 08:33:55,296 INFO L933 BasicCegarLoop]: 621 mSDtfsCounter, 158 mSDsluCounter, 3366 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 3987 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:55,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 3987 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:33:55,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-12-22 08:33:55,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 696. [2021-12-22 08:33:55,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 578 states have (on average 1.3737024221453287) internal successors, (794), 585 states have internal predecessors, (794), 84 states have call successors, (84), 26 states have call predecessors, (84), 33 states have return successors, (96), 84 states have call predecessors, (96), 77 states have call successors, (96) [2021-12-22 08:33:55,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 974 transitions. [2021-12-22 08:33:55,331 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 974 transitions. Word has length 40 [2021-12-22 08:33:55,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:55,331 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 974 transitions. [2021-12-22 08:33:55,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:33:55,331 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 974 transitions. [2021-12-22 08:33:55,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-22 08:33:55,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:55,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:55,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 08:33:55,333 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:55,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:55,333 INFO L85 PathProgramCache]: Analyzing trace with hash -577176493, now seen corresponding path program 1 times [2021-12-22 08:33:55,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:55,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265177866] [2021-12-22 08:33:55,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:55,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 08:33:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:55,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:55,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:55,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265177866] [2021-12-22 08:33:55,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265177866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:55,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:55,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 08:33:55,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242034637] [2021-12-22 08:33:55,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:55,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 08:33:55,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:55,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 08:33:55,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:33:55,376 INFO L87 Difference]: Start difference. First operand 696 states and 974 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:33:55,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:55,783 INFO L93 Difference]: Finished difference Result 777 states and 1087 transitions. [2021-12-22 08:33:55,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 08:33:55,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-12-22 08:33:55,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:55,786 INFO L225 Difference]: With dead ends: 777 [2021-12-22 08:33:55,786 INFO L226 Difference]: Without dead ends: 741 [2021-12-22 08:33:55,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:33:55,787 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 792 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:55,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 1517 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:33:55,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2021-12-22 08:33:55,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 696. [2021-12-22 08:33:55,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 578 states have (on average 1.3719723183391004) internal successors, (793), 585 states have internal predecessors, (793), 84 states have call successors, (84), 26 states have call predecessors, (84), 33 states have return successors, (96), 84 states have call predecessors, (96), 77 states have call successors, (96) [2021-12-22 08:33:55,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 973 transitions. [2021-12-22 08:33:55,821 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 973 transitions. Word has length 41 [2021-12-22 08:33:55,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:55,821 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 973 transitions. [2021-12-22 08:33:55,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:33:55,822 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 973 transitions. [2021-12-22 08:33:55,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 08:33:55,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:55,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:55,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 08:33:55,824 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:55,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:55,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1220210391, now seen corresponding path program 1 times [2021-12-22 08:33:55,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:55,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628454951] [2021-12-22 08:33:55,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:55,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:55,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 08:33:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:55,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 08:33:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:55,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:55,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628454951] [2021-12-22 08:33:55,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628454951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:55,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:55,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 08:33:55,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109102464] [2021-12-22 08:33:55,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:55,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 08:33:55,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:55,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 08:33:55,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:33:55,852 INFO L87 Difference]: Start difference. First operand 696 states and 973 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:33:56,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:56,182 INFO L93 Difference]: Finished difference Result 906 states and 1276 transitions. [2021-12-22 08:33:56,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 08:33:56,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2021-12-22 08:33:56,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:56,185 INFO L225 Difference]: With dead ends: 906 [2021-12-22 08:33:56,185 INFO L226 Difference]: Without dead ends: 688 [2021-12-22 08:33:56,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:33:56,186 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 252 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:56,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 1847 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:33:56,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-12-22 08:33:56,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 672. [2021-12-22 08:33:56,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 557 states have (on average 1.3698384201077198) internal successors, (763), 563 states have internal predecessors, (763), 83 states have call successors, (83), 26 states have call predecessors, (83), 31 states have return successors, (94), 82 states have call predecessors, (94), 77 states have call successors, (94) [2021-12-22 08:33:56,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 940 transitions. [2021-12-22 08:33:56,231 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 940 transitions. Word has length 43 [2021-12-22 08:33:56,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:56,231 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 940 transitions. [2021-12-22 08:33:56,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:33:56,232 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 940 transitions. [2021-12-22 08:33:56,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 08:33:56,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:56,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:56,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 08:33:56,233 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:56,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:56,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1828304678, now seen corresponding path program 1 times [2021-12-22 08:33:56,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:56,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344470226] [2021-12-22 08:33:56,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:56,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:56,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 08:33:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:56,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:33:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:56,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:56,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344470226] [2021-12-22 08:33:56,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344470226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:56,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:56,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 08:33:56,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131055773] [2021-12-22 08:33:56,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:56,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 08:33:56,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:56,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 08:33:56,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 08:33:56,334 INFO L87 Difference]: Start difference. First operand 672 states and 940 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:33:56,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:56,907 INFO L93 Difference]: Finished difference Result 702 states and 994 transitions. [2021-12-22 08:33:56,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 08:33:56,907 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2021-12-22 08:33:56,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:56,909 INFO L225 Difference]: With dead ends: 702 [2021-12-22 08:33:56,910 INFO L226 Difference]: Without dead ends: 686 [2021-12-22 08:33:56,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-22 08:33:56,910 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 98 mSDsluCounter, 3850 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 4461 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:56,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 4461 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 08:33:56,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-12-22 08:33:56,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 670. [2021-12-22 08:33:56,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 556 states have (on average 1.368705035971223) internal successors, (761), 562 states have internal predecessors, (761), 82 states have call successors, (82), 26 states have call predecessors, (82), 31 states have return successors, (93), 81 states have call predecessors, (93), 76 states have call successors, (93) [2021-12-22 08:33:56,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 936 transitions. [2021-12-22 08:33:56,945 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 936 transitions. Word has length 43 [2021-12-22 08:33:56,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:56,945 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 936 transitions. [2021-12-22 08:33:56,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:33:56,946 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 936 transitions. [2021-12-22 08:33:56,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-22 08:33:56,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:56,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:56,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-22 08:33:56,947 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:56,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:56,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1534576112, now seen corresponding path program 1 times [2021-12-22 08:33:56,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:56,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595195208] [2021-12-22 08:33:56,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:56,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:57,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 08:33:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:57,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:33:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:57,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:57,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:57,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595195208] [2021-12-22 08:33:57,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595195208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:57,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:57,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-22 08:33:57,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013563175] [2021-12-22 08:33:57,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:57,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 08:33:57,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:57,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 08:33:57,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-22 08:33:57,073 INFO L87 Difference]: Start difference. First operand 670 states and 936 transitions. Second operand has 13 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:33:57,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:57,675 INFO L93 Difference]: Finished difference Result 722 states and 1014 transitions. [2021-12-22 08:33:57,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 08:33:57,676 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2021-12-22 08:33:57,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:57,678 INFO L225 Difference]: With dead ends: 722 [2021-12-22 08:33:57,678 INFO L226 Difference]: Without dead ends: 702 [2021-12-22 08:33:57,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-12-22 08:33:57,680 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 247 mSDsluCounter, 4442 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 5039 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:57,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 5039 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 08:33:57,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-12-22 08:33:57,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 668. [2021-12-22 08:33:57,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 555 states have (on average 1.3675675675675676) internal successors, (759), 561 states have internal predecessors, (759), 81 states have call successors, (81), 26 states have call predecessors, (81), 31 states have return successors, (92), 80 states have call predecessors, (92), 75 states have call successors, (92) [2021-12-22 08:33:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 932 transitions. [2021-12-22 08:33:57,729 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 932 transitions. Word has length 47 [2021-12-22 08:33:57,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:57,729 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 932 transitions. [2021-12-22 08:33:57,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:33:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 932 transitions. [2021-12-22 08:33:57,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-22 08:33:57,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:57,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:57,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-22 08:33:57,731 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:57,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:57,731 INFO L85 PathProgramCache]: Analyzing trace with hash 397890919, now seen corresponding path program 1 times [2021-12-22 08:33:57,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:57,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781148482] [2021-12-22 08:33:57,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:57,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:57,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 08:33:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:57,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:33:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:57,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:57,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781148482] [2021-12-22 08:33:57,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781148482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:57,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:57,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-22 08:33:57,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856409740] [2021-12-22 08:33:57,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:57,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 08:33:57,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:57,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 08:33:57,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-22 08:33:57,826 INFO L87 Difference]: Start difference. First operand 668 states and 932 transitions. Second operand has 13 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:33:58,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:58,501 INFO L93 Difference]: Finished difference Result 720 states and 1010 transitions. [2021-12-22 08:33:58,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 08:33:58,501 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2021-12-22 08:33:58,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:58,504 INFO L225 Difference]: With dead ends: 720 [2021-12-22 08:33:58,504 INFO L226 Difference]: Without dead ends: 699 [2021-12-22 08:33:58,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-12-22 08:33:58,505 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 168 mSDsluCounter, 5275 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 5856 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:58,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 5856 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 08:33:58,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-12-22 08:33:58,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 667. [2021-12-22 08:33:58,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 554 states have (on average 1.3501805054151625) internal successors, (748), 560 states have internal predecessors, (748), 81 states have call successors, (81), 26 states have call predecessors, (81), 31 states have return successors, (92), 80 states have call predecessors, (92), 75 states have call successors, (92) [2021-12-22 08:33:58,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 921 transitions. [2021-12-22 08:33:58,540 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 921 transitions. Word has length 44 [2021-12-22 08:33:58,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:58,540 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 921 transitions. [2021-12-22 08:33:58,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:33:58,541 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 921 transitions. [2021-12-22 08:33:58,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-22 08:33:58,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:58,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:58,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-22 08:33:58,544 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:58,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:58,545 INFO L85 PathProgramCache]: Analyzing trace with hash 117751789, now seen corresponding path program 1 times [2021-12-22 08:33:58,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:58,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601000585] [2021-12-22 08:33:58,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:58,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:58,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 08:33:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:58,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:33:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:58,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:58,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601000585] [2021-12-22 08:33:58,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601000585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:58,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:58,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 08:33:58,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711399757] [2021-12-22 08:33:58,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:58,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 08:33:58,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:58,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 08:33:58,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 08:33:58,684 INFO L87 Difference]: Start difference. First operand 667 states and 921 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:33:59,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:59,202 INFO L93 Difference]: Finished difference Result 696 states and 974 transitions. [2021-12-22 08:33:59,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 08:33:59,202 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2021-12-22 08:33:59,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:59,204 INFO L225 Difference]: With dead ends: 696 [2021-12-22 08:33:59,204 INFO L226 Difference]: Without dead ends: 680 [2021-12-22 08:33:59,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-22 08:33:59,205 INFO L933 BasicCegarLoop]: 589 mSDtfsCounter, 98 mSDsluCounter, 3693 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 4282 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:59,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 4282 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 08:33:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-12-22 08:33:59,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 664. [2021-12-22 08:33:59,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 552 states have (on average 1.3496376811594204) internal successors, (745), 558 states have internal predecessors, (745), 80 states have call successors, (80), 26 states have call predecessors, (80), 31 states have return successors, (91), 79 states have call predecessors, (91), 74 states have call successors, (91) [2021-12-22 08:33:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 916 transitions. [2021-12-22 08:33:59,235 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 916 transitions. Word has length 44 [2021-12-22 08:33:59,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:59,235 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 916 transitions. [2021-12-22 08:33:59,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:33:59,235 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 916 transitions. [2021-12-22 08:33:59,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-22 08:33:59,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:59,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:59,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-22 08:33:59,237 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:59,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:59,238 INFO L85 PathProgramCache]: Analyzing trace with hash -914670889, now seen corresponding path program 1 times [2021-12-22 08:33:59,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:59,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477084832] [2021-12-22 08:33:59,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:59,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:59,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 08:33:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:59,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:59,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477084832] [2021-12-22 08:33:59,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477084832] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:59,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:59,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 08:33:59,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270964348] [2021-12-22 08:33:59,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:59,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 08:33:59,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:59,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 08:33:59,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 08:33:59,284 INFO L87 Difference]: Start difference. First operand 664 states and 916 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:33:59,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:59,578 INFO L93 Difference]: Finished difference Result 735 states and 1013 transitions. [2021-12-22 08:33:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 08:33:59,579 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-12-22 08:33:59,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:59,581 INFO L225 Difference]: With dead ends: 735 [2021-12-22 08:33:59,581 INFO L226 Difference]: Without dead ends: 668 [2021-12-22 08:33:59,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-12-22 08:33:59,582 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 235 mSDsluCounter, 3109 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 3694 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:59,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 3694 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:33:59,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-12-22 08:33:59,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 652. [2021-12-22 08:33:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 543 states have (on average 1.3443830570902393) internal successors, (730), 549 states have internal predecessors, (730), 77 states have call successors, (77), 26 states have call predecessors, (77), 31 states have return successors, (88), 76 states have call predecessors, (88), 71 states have call successors, (88) [2021-12-22 08:33:59,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 895 transitions. [2021-12-22 08:33:59,615 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 895 transitions. Word has length 44 [2021-12-22 08:33:59,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:59,615 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 895 transitions. [2021-12-22 08:33:59,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:33:59,616 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 895 transitions. [2021-12-22 08:33:59,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 08:33:59,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:59,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:59,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-22 08:33:59,617 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:59,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:59,618 INFO L85 PathProgramCache]: Analyzing trace with hash -501722536, now seen corresponding path program 1 times [2021-12-22 08:33:59,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:59,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068035402] [2021-12-22 08:33:59,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:59,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:59,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 08:33:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:59,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 08:33:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:33:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:33:59,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:33:59,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068035402] [2021-12-22 08:33:59,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068035402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:33:59,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:33:59,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 08:33:59,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122103656] [2021-12-22 08:33:59,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:33:59,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 08:33:59,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:33:59,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 08:33:59,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:33:59,654 INFO L87 Difference]: Start difference. First operand 652 states and 895 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:33:59,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:33:59,931 INFO L93 Difference]: Finished difference Result 797 states and 1137 transitions. [2021-12-22 08:33:59,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 08:33:59,931 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2021-12-22 08:33:59,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:33:59,934 INFO L225 Difference]: With dead ends: 797 [2021-12-22 08:33:59,934 INFO L226 Difference]: Without dead ends: 703 [2021-12-22 08:33:59,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 08:33:59,935 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 130 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 2228 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:33:59,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 2228 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:33:59,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-12-22 08:33:59,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 659. [2021-12-22 08:33:59,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 548 states have (on average 1.344890510948905) internal successors, (737), 555 states have internal predecessors, (737), 78 states have call successors, (78), 26 states have call predecessors, (78), 32 states have return successors, (95), 77 states have call predecessors, (95), 72 states have call successors, (95) [2021-12-22 08:33:59,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 910 transitions. [2021-12-22 08:33:59,966 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 910 transitions. Word has length 45 [2021-12-22 08:33:59,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:33:59,966 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 910 transitions. [2021-12-22 08:33:59,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:33:59,966 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 910 transitions. [2021-12-22 08:33:59,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 08:33:59,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:33:59,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:33:59,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-22 08:33:59,972 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:33:59,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:33:59,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1011195626, now seen corresponding path program 1 times [2021-12-22 08:33:59,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:33:59,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423639483] [2021-12-22 08:33:59,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:33:59,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:33:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:00,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 08:34:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:00,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 08:34:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:00,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:00,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:00,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423639483] [2021-12-22 08:34:00,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423639483] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:00,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:00,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 08:34:00,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099486020] [2021-12-22 08:34:00,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:00,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 08:34:00,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:00,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 08:34:00,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 08:34:00,026 INFO L87 Difference]: Start difference. First operand 659 states and 910 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:00,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:00,371 INFO L93 Difference]: Finished difference Result 697 states and 978 transitions. [2021-12-22 08:34:00,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 08:34:00,372 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2021-12-22 08:34:00,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:00,374 INFO L225 Difference]: With dead ends: 697 [2021-12-22 08:34:00,374 INFO L226 Difference]: Without dead ends: 677 [2021-12-22 08:34:00,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-12-22 08:34:00,375 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 245 mSDsluCounter, 2917 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 3470 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:00,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 3470 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:34:00,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2021-12-22 08:34:00,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 657. [2021-12-22 08:34:00,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 547 states have (on average 1.3436928702010968) internal successors, (735), 554 states have internal predecessors, (735), 77 states have call successors, (77), 26 states have call predecessors, (77), 32 states have return successors, (94), 76 states have call predecessors, (94), 71 states have call successors, (94) [2021-12-22 08:34:00,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 906 transitions. [2021-12-22 08:34:00,401 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 906 transitions. Word has length 45 [2021-12-22 08:34:00,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:00,401 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 906 transitions. [2021-12-22 08:34:00,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:00,401 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 906 transitions. [2021-12-22 08:34:00,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 08:34:00,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:00,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:00,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-22 08:34:00,403 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:00,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:00,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1504244121, now seen corresponding path program 1 times [2021-12-22 08:34:00,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:00,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625319337] [2021-12-22 08:34:00,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:00,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:00,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 08:34:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:00,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:00,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:00,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625319337] [2021-12-22 08:34:00,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625319337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:00,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:00,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 08:34:00,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785837116] [2021-12-22 08:34:00,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:00,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 08:34:00,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:00,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 08:34:00,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:00,437 INFO L87 Difference]: Start difference. First operand 657 states and 906 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:34:00,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:00,697 INFO L93 Difference]: Finished difference Result 704 states and 988 transitions. [2021-12-22 08:34:00,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 08:34:00,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-12-22 08:34:00,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:00,700 INFO L225 Difference]: With dead ends: 704 [2021-12-22 08:34:00,700 INFO L226 Difference]: Without dead ends: 669 [2021-12-22 08:34:00,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-12-22 08:34:00,701 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 166 mSDsluCounter, 2989 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 3542 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:00,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 3542 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-12-22 08:34:00,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 649. [2021-12-22 08:34:00,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 541 states have (on average 1.3364140480591498) internal successors, (723), 548 states have internal predecessors, (723), 75 states have call successors, (75), 26 states have call predecessors, (75), 32 states have return successors, (92), 74 states have call predecessors, (92), 69 states have call successors, (92) [2021-12-22 08:34:00,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 890 transitions. [2021-12-22 08:34:00,728 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 890 transitions. Word has length 45 [2021-12-22 08:34:00,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:00,728 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 890 transitions. [2021-12-22 08:34:00,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:34:00,729 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 890 transitions. [2021-12-22 08:34:00,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 08:34:00,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:00,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:00,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-22 08:34:00,730 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:00,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:00,731 INFO L85 PathProgramCache]: Analyzing trace with hash -945301524, now seen corresponding path program 1 times [2021-12-22 08:34:00,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:00,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984666562] [2021-12-22 08:34:00,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:00,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:00,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 08:34:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:00,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:00,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:00,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984666562] [2021-12-22 08:34:00,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984666562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:00,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:00,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 08:34:00,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745994380] [2021-12-22 08:34:00,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:00,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 08:34:00,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:00,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 08:34:00,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-22 08:34:00,840 INFO L87 Difference]: Start difference. First operand 649 states and 890 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:01,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:01,494 INFO L93 Difference]: Finished difference Result 684 states and 955 transitions. [2021-12-22 08:34:01,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 08:34:01,494 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2021-12-22 08:34:01,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:01,497 INFO L225 Difference]: With dead ends: 684 [2021-12-22 08:34:01,497 INFO L226 Difference]: Without dead ends: 666 [2021-12-22 08:34:01,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-22 08:34:01,498 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 110 mSDsluCounter, 3773 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 4317 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:01,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 4317 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 08:34:01,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-12-22 08:34:01,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 646. [2021-12-22 08:34:01,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 539 states have (on average 1.3358070500927643) internal successors, (720), 546 states have internal predecessors, (720), 74 states have call successors, (74), 26 states have call predecessors, (74), 32 states have return successors, (91), 73 states have call predecessors, (91), 68 states have call successors, (91) [2021-12-22 08:34:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 885 transitions. [2021-12-22 08:34:01,525 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 885 transitions. Word has length 46 [2021-12-22 08:34:01,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:01,525 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 885 transitions. [2021-12-22 08:34:01,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:01,525 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 885 transitions. [2021-12-22 08:34:01,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 08:34:01,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:01,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:01,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-22 08:34:01,527 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:01,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:01,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1146484836, now seen corresponding path program 1 times [2021-12-22 08:34:01,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:01,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863403811] [2021-12-22 08:34:01,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:01,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:01,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 08:34:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:01,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 08:34:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:01,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:01,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863403811] [2021-12-22 08:34:01,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863403811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:01,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:01,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:01,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049680194] [2021-12-22 08:34:01,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:01,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:01,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:01,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:01,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:01,573 INFO L87 Difference]: Start difference. First operand 646 states and 885 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:01,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:01,827 INFO L93 Difference]: Finished difference Result 703 states and 992 transitions. [2021-12-22 08:34:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 08:34:01,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2021-12-22 08:34:01,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:01,857 INFO L225 Difference]: With dead ends: 703 [2021-12-22 08:34:01,857 INFO L226 Difference]: Without dead ends: 676 [2021-12-22 08:34:01,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:01,858 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 102 mSDsluCounter, 2161 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:01,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 2693 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:01,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-12-22 08:34:01,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 650. [2021-12-22 08:34:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 541 states have (on average 1.33456561922366) internal successors, (722), 550 states have internal predecessors, (722), 74 states have call successors, (74), 26 states have call predecessors, (74), 34 states have return successors, (107), 73 states have call predecessors, (107), 68 states have call successors, (107) [2021-12-22 08:34:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 903 transitions. [2021-12-22 08:34:01,894 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 903 transitions. Word has length 46 [2021-12-22 08:34:01,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:01,894 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 903 transitions. [2021-12-22 08:34:01,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:01,894 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 903 transitions. [2021-12-22 08:34:01,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-22 08:34:01,895 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:01,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:01,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-22 08:34:01,896 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:01,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:01,896 INFO L85 PathProgramCache]: Analyzing trace with hash -876237255, now seen corresponding path program 1 times [2021-12-22 08:34:01,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:01,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391109276] [2021-12-22 08:34:01,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:01,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:01,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 08:34:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:01,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:02,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:02,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391109276] [2021-12-22 08:34:02,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391109276] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:02,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:02,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 08:34:02,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566561997] [2021-12-22 08:34:02,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:02,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 08:34:02,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:02,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 08:34:02,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-22 08:34:02,009 INFO L87 Difference]: Start difference. First operand 650 states and 903 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:02,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:02,656 INFO L93 Difference]: Finished difference Result 685 states and 968 transitions. [2021-12-22 08:34:02,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 08:34:02,657 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2021-12-22 08:34:02,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:02,659 INFO L225 Difference]: With dead ends: 685 [2021-12-22 08:34:02,659 INFO L226 Difference]: Without dead ends: 667 [2021-12-22 08:34:02,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-12-22 08:34:02,660 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 123 mSDsluCounter, 4152 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 4690 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:02,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 4690 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 08:34:02,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-12-22 08:34:02,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 647. [2021-12-22 08:34:02,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 539 states have (on average 1.3339517625231911) internal successors, (719), 548 states have internal predecessors, (719), 73 states have call successors, (73), 26 states have call predecessors, (73), 34 states have return successors, (106), 72 states have call predecessors, (106), 67 states have call successors, (106) [2021-12-22 08:34:02,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 898 transitions. [2021-12-22 08:34:02,687 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 898 transitions. Word has length 47 [2021-12-22 08:34:02,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:02,687 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 898 transitions. [2021-12-22 08:34:02,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:02,688 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 898 transitions. [2021-12-22 08:34:02,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-22 08:34:02,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:02,690 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:02,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-22 08:34:02,690 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:02,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:02,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1600404883, now seen corresponding path program 1 times [2021-12-22 08:34:02,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:02,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296168574] [2021-12-22 08:34:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:02,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:02,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 08:34:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:02,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 08:34:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:02,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 08:34:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:02,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 08:34:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:02,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:02,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296168574] [2021-12-22 08:34:02,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296168574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:02,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:02,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 08:34:02,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356542958] [2021-12-22 08:34:02,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:02,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 08:34:02,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:02,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 08:34:02,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:02,749 INFO L87 Difference]: Start difference. First operand 647 states and 898 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-22 08:34:03,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:03,147 INFO L93 Difference]: Finished difference Result 1017 states and 1421 transitions. [2021-12-22 08:34:03,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 08:34:03,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 63 [2021-12-22 08:34:03,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:03,149 INFO L225 Difference]: With dead ends: 1017 [2021-12-22 08:34:03,150 INFO L226 Difference]: Without dead ends: 647 [2021-12-22 08:34:03,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-12-22 08:34:03,151 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 862 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:03,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 1397 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:34:03,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-12-22 08:34:03,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2021-12-22 08:34:03,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 539 states have (on average 1.3265306122448979) internal successors, (715), 548 states have internal predecessors, (715), 73 states have call successors, (73), 26 states have call predecessors, (73), 34 states have return successors, (101), 72 states have call predecessors, (101), 67 states have call successors, (101) [2021-12-22 08:34:03,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 889 transitions. [2021-12-22 08:34:03,177 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 889 transitions. Word has length 63 [2021-12-22 08:34:03,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:03,177 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 889 transitions. [2021-12-22 08:34:03,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-22 08:34:03,178 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 889 transitions. [2021-12-22 08:34:03,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-22 08:34:03,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:03,179 INFO L514 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] [2021-12-22 08:34:03,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-22 08:34:03,179 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:03,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:03,179 INFO L85 PathProgramCache]: Analyzing trace with hash -816949344, now seen corresponding path program 1 times [2021-12-22 08:34:03,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:03,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841174571] [2021-12-22 08:34:03,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:03,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:03,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 08:34:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:03,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 08:34:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:03,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 08:34:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:03,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 08:34:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:03,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:03,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841174571] [2021-12-22 08:34:03,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841174571] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 08:34:03,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456561614] [2021-12-22 08:34:03,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:03,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:34:03,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:34:03,226 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 08:34:03,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 08:34:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:03,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 08:34:03,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 08:34:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:03,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 08:34:03,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:03,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456561614] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-22 08:34:03,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-22 08:34:03,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2021-12-22 08:34:03,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587499528] [2021-12-22 08:34:03,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:03,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 08:34:03,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:03,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 08:34:03,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-22 08:34:03,841 INFO L87 Difference]: Start difference. First operand 647 states and 889 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 08:34:04,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:04,087 INFO L93 Difference]: Finished difference Result 935 states and 1273 transitions. [2021-12-22 08:34:04,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 08:34:04,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2021-12-22 08:34:04,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:04,090 INFO L225 Difference]: With dead ends: 935 [2021-12-22 08:34:04,090 INFO L226 Difference]: Without dead ends: 784 [2021-12-22 08:34:04,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-22 08:34:04,091 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 658 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:04,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 1352 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:04,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-12-22 08:34:04,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 685. [2021-12-22 08:34:04,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 570 states have (on average 1.3263157894736841) internal successors, (756), 579 states have internal predecessors, (756), 76 states have call successors, (76), 28 states have call predecessors, (76), 38 states have return successors, (107), 77 states have call predecessors, (107), 70 states have call successors, (107) [2021-12-22 08:34:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 939 transitions. [2021-12-22 08:34:04,147 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 939 transitions. Word has length 64 [2021-12-22 08:34:04,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:04,147 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 939 transitions. [2021-12-22 08:34:04,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 08:34:04,147 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 939 transitions. [2021-12-22 08:34:04,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-22 08:34:04,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:04,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:04,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 08:34:04,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-22 08:34:04,364 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:04,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:04,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1640527845, now seen corresponding path program 1 times [2021-12-22 08:34:04,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:04,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271322320] [2021-12-22 08:34:04,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:04,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:04,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 08:34:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:04,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:04,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:04,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271322320] [2021-12-22 08:34:04,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271322320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:04,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:04,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-22 08:34:04,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092746210] [2021-12-22 08:34:04,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:04,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 08:34:04,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:04,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 08:34:04,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-22 08:34:04,443 INFO L87 Difference]: Start difference. First operand 685 states and 939 transitions. Second operand has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:05,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:05,042 INFO L93 Difference]: Finished difference Result 703 states and 957 transitions. [2021-12-22 08:34:05,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 08:34:05,042 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2021-12-22 08:34:05,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:05,045 INFO L225 Difference]: With dead ends: 703 [2021-12-22 08:34:05,045 INFO L226 Difference]: Without dead ends: 683 [2021-12-22 08:34:05,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-12-22 08:34:05,045 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 239 mSDsluCounter, 4090 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 4589 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:05,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 4589 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 08:34:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-12-22 08:34:05,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2021-12-22 08:34:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 569 states have (on average 1.3251318101933216) internal successors, (754), 578 states have internal predecessors, (754), 75 states have call successors, (75), 28 states have call predecessors, (75), 38 states have return successors, (106), 76 states have call predecessors, (106), 69 states have call successors, (106) [2021-12-22 08:34:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 935 transitions. [2021-12-22 08:34:05,087 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 935 transitions. Word has length 48 [2021-12-22 08:34:05,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:05,088 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 935 transitions. [2021-12-22 08:34:05,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:05,088 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 935 transitions. [2021-12-22 08:34:05,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-22 08:34:05,089 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:05,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:05,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-22 08:34:05,089 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:05,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:05,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1335817887, now seen corresponding path program 1 times [2021-12-22 08:34:05,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:05,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219043451] [2021-12-22 08:34:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:05,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:05,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 08:34:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:05,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 08:34:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:05,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:05,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219043451] [2021-12-22 08:34:05,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219043451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:05,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:05,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 08:34:05,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892232729] [2021-12-22 08:34:05,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:05,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 08:34:05,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:05,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 08:34:05,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:34:05,119 INFO L87 Difference]: Start difference. First operand 683 states and 935 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:05,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:05,299 INFO L93 Difference]: Finished difference Result 919 states and 1254 transitions. [2021-12-22 08:34:05,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 08:34:05,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2021-12-22 08:34:05,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:05,307 INFO L225 Difference]: With dead ends: 919 [2021-12-22 08:34:05,307 INFO L226 Difference]: Without dead ends: 641 [2021-12-22 08:34:05,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:34:05,308 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 99 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:05,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 1594 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:34:05,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-12-22 08:34:05,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 606. [2021-12-22 08:34:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 509 states have (on average 1.3143418467583496) internal successors, (669), 517 states have internal predecessors, (669), 65 states have call successors, (65), 25 states have call predecessors, (65), 31 states have return successors, (73), 63 states have call predecessors, (73), 59 states have call successors, (73) [2021-12-22 08:34:05,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 807 transitions. [2021-12-22 08:34:05,336 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 807 transitions. Word has length 48 [2021-12-22 08:34:05,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:05,336 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 807 transitions. [2021-12-22 08:34:05,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:05,337 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 807 transitions. [2021-12-22 08:34:05,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-22 08:34:05,338 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:05,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:05,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-22 08:34:05,338 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:05,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:05,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1170302788, now seen corresponding path program 1 times [2021-12-22 08:34:05,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:05,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131500546] [2021-12-22 08:34:05,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:05,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:05,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 08:34:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:05,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:05,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:05,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131500546] [2021-12-22 08:34:05,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131500546] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:05,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:05,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 08:34:05,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061336941] [2021-12-22 08:34:05,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:05,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 08:34:05,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:05,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 08:34:05,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-22 08:34:05,462 INFO L87 Difference]: Start difference. First operand 606 states and 807 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:06,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:06,127 INFO L93 Difference]: Finished difference Result 621 states and 822 transitions. [2021-12-22 08:34:06,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 08:34:06,129 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2021-12-22 08:34:06,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:06,131 INFO L225 Difference]: With dead ends: 621 [2021-12-22 08:34:06,131 INFO L226 Difference]: Without dead ends: 597 [2021-12-22 08:34:06,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-12-22 08:34:06,131 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 118 mSDsluCounter, 3884 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 4385 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:06,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 4385 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 08:34:06,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-12-22 08:34:06,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2021-12-22 08:34:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 502 states have (on average 1.3147410358565736) internal successors, (660), 510 states have internal predecessors, (660), 63 states have call successors, (63), 25 states have call predecessors, (63), 31 states have return successors, (71), 61 states have call predecessors, (71), 57 states have call successors, (71) [2021-12-22 08:34:06,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 794 transitions. [2021-12-22 08:34:06,160 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 794 transitions. Word has length 54 [2021-12-22 08:34:06,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:06,160 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 794 transitions. [2021-12-22 08:34:06,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:06,160 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 794 transitions. [2021-12-22 08:34:06,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-22 08:34:06,162 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:06,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:06,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-22 08:34:06,162 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:06,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:06,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1066234985, now seen corresponding path program 1 times [2021-12-22 08:34:06,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:06,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365625651] [2021-12-22 08:34:06,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:06,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:06,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 08:34:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:06,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:06,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:06,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365625651] [2021-12-22 08:34:06,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365625651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:06,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:06,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 08:34:06,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291714034] [2021-12-22 08:34:06,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:06,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 08:34:06,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:06,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 08:34:06,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-22 08:34:06,290 INFO L87 Difference]: Start difference. First operand 597 states and 794 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:06,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:06,905 INFO L93 Difference]: Finished difference Result 612 states and 809 transitions. [2021-12-22 08:34:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 08:34:06,907 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2021-12-22 08:34:06,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:06,909 INFO L225 Difference]: With dead ends: 612 [2021-12-22 08:34:06,909 INFO L226 Difference]: Without dead ends: 594 [2021-12-22 08:34:06,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-12-22 08:34:06,910 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 118 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 4191 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:06,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 4191 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 08:34:06,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-12-22 08:34:06,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2021-12-22 08:34:06,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 500 states have (on average 1.314) internal successors, (657), 508 states have internal predecessors, (657), 62 states have call successors, (62), 25 states have call predecessors, (62), 31 states have return successors, (70), 60 states have call predecessors, (70), 56 states have call successors, (70) [2021-12-22 08:34:06,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 789 transitions. [2021-12-22 08:34:06,941 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 789 transitions. Word has length 48 [2021-12-22 08:34:06,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:06,941 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 789 transitions. [2021-12-22 08:34:06,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:06,942 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 789 transitions. [2021-12-22 08:34:06,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-22 08:34:06,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:06,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:06,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-22 08:34:06,943 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:06,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:06,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1131207190, now seen corresponding path program 1 times [2021-12-22 08:34:06,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:06,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790888471] [2021-12-22 08:34:06,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:06,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:06,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 08:34:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:07,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 08:34:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:07,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:07,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:07,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:07,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790888471] [2021-12-22 08:34:07,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790888471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:07,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:07,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 08:34:07,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164632074] [2021-12-22 08:34:07,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:07,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 08:34:07,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:07,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 08:34:07,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-22 08:34:07,045 INFO L87 Difference]: Start difference. First operand 594 states and 789 transitions. Second operand has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-22 08:34:07,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:07,623 INFO L93 Difference]: Finished difference Result 628 states and 824 transitions. [2021-12-22 08:34:07,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 08:34:07,623 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2021-12-22 08:34:07,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:07,625 INFO L225 Difference]: With dead ends: 628 [2021-12-22 08:34:07,625 INFO L226 Difference]: Without dead ends: 608 [2021-12-22 08:34:07,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-12-22 08:34:07,628 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 256 mSDsluCounter, 4029 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 4491 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:07,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 4491 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 08:34:07,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-12-22 08:34:07,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 592. [2021-12-22 08:34:07,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 499 states have (on average 1.312625250501002) internal successors, (655), 507 states have internal predecessors, (655), 61 states have call successors, (61), 25 states have call predecessors, (61), 31 states have return successors, (69), 59 states have call predecessors, (69), 55 states have call successors, (69) [2021-12-22 08:34:07,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 785 transitions. [2021-12-22 08:34:07,653 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 785 transitions. Word has length 51 [2021-12-22 08:34:07,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:07,653 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 785 transitions. [2021-12-22 08:34:07,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-22 08:34:07,654 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 785 transitions. [2021-12-22 08:34:07,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-22 08:34:07,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:07,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:07,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-22 08:34:07,655 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:07,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:07,655 INFO L85 PathProgramCache]: Analyzing trace with hash -480998912, now seen corresponding path program 1 times [2021-12-22 08:34:07,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:07,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584684928] [2021-12-22 08:34:07,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:07,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:07,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 08:34:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:07,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-22 08:34:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:07,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:07,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584684928] [2021-12-22 08:34:07,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584684928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:07,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:07,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:07,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651873891] [2021-12-22 08:34:07,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:07,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:07,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:07,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:07,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:07,696 INFO L87 Difference]: Start difference. First operand 592 states and 785 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:07,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:07,962 INFO L93 Difference]: Finished difference Result 674 states and 879 transitions. [2021-12-22 08:34:07,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 08:34:07,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2021-12-22 08:34:07,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:07,965 INFO L225 Difference]: With dead ends: 674 [2021-12-22 08:34:07,965 INFO L226 Difference]: Without dead ends: 648 [2021-12-22 08:34:07,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-22 08:34:07,966 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 267 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:07,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2368 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:07,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-12-22 08:34:07,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 598. [2021-12-22 08:34:07,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 504 states have (on average 1.3115079365079365) internal successors, (661), 512 states have internal predecessors, (661), 62 states have call successors, (62), 25 states have call predecessors, (62), 31 states have return successors, (70), 60 states have call predecessors, (70), 56 states have call successors, (70) [2021-12-22 08:34:08,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 793 transitions. [2021-12-22 08:34:08,000 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 793 transitions. Word has length 50 [2021-12-22 08:34:08,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:08,000 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 793 transitions. [2021-12-22 08:34:08,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:08,001 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 793 transitions. [2021-12-22 08:34:08,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-22 08:34:08,002 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:08,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:08,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-22 08:34:08,002 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:08,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:08,003 INFO L85 PathProgramCache]: Analyzing trace with hash 266979750, now seen corresponding path program 1 times [2021-12-22 08:34:08,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:08,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990677801] [2021-12-22 08:34:08,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:08,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:08,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 08:34:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:08,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 08:34:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:08,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 08:34:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:08,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 08:34:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:08,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:08,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:08,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990677801] [2021-12-22 08:34:08,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990677801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:08,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:08,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 08:34:08,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680399684] [2021-12-22 08:34:08,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:08,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 08:34:08,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:08,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 08:34:08,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:34:08,050 INFO L87 Difference]: Start difference. First operand 598 states and 793 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 08:34:08,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:08,323 INFO L93 Difference]: Finished difference Result 703 states and 934 transitions. [2021-12-22 08:34:08,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 08:34:08,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 53 [2021-12-22 08:34:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:08,325 INFO L225 Difference]: With dead ends: 703 [2021-12-22 08:34:08,325 INFO L226 Difference]: Without dead ends: 598 [2021-12-22 08:34:08,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:34:08,326 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 113 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:08,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1458 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:08,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-12-22 08:34:08,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-12-22 08:34:08,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 504 states have (on average 1.3055555555555556) internal successors, (658), 512 states have internal predecessors, (658), 62 states have call successors, (62), 25 states have call predecessors, (62), 31 states have return successors, (70), 60 states have call predecessors, (70), 56 states have call successors, (70) [2021-12-22 08:34:08,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 790 transitions. [2021-12-22 08:34:08,359 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 790 transitions. Word has length 53 [2021-12-22 08:34:08,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:08,359 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 790 transitions. [2021-12-22 08:34:08,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 08:34:08,359 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 790 transitions. [2021-12-22 08:34:08,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 08:34:08,360 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:08,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:08,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-22 08:34:08,360 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:08,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:08,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1095084481, now seen corresponding path program 1 times [2021-12-22 08:34:08,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:08,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420611593] [2021-12-22 08:34:08,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:08,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:08,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 08:34:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:08,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 08:34:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:08,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:08,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:08,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420611593] [2021-12-22 08:34:08,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420611593] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:08,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:08,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 08:34:08,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170528813] [2021-12-22 08:34:08,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:08,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 08:34:08,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:08,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 08:34:08,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-22 08:34:08,453 INFO L87 Difference]: Start difference. First operand 598 states and 790 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-22 08:34:09,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:09,053 INFO L93 Difference]: Finished difference Result 616 states and 808 transitions. [2021-12-22 08:34:09,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 08:34:09,053 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2021-12-22 08:34:09,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:09,055 INFO L225 Difference]: With dead ends: 616 [2021-12-22 08:34:09,055 INFO L226 Difference]: Without dead ends: 596 [2021-12-22 08:34:09,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-12-22 08:34:09,056 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 256 mSDsluCounter, 3718 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 4188 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:09,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 4188 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 08:34:09,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-12-22 08:34:09,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-12-22 08:34:09,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 503 states have (on average 1.3041749502982107) internal successors, (656), 511 states have internal predecessors, (656), 61 states have call successors, (61), 25 states have call predecessors, (61), 31 states have return successors, (69), 59 states have call predecessors, (69), 55 states have call successors, (69) [2021-12-22 08:34:09,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 786 transitions. [2021-12-22 08:34:09,085 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 786 transitions. Word has length 52 [2021-12-22 08:34:09,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:09,085 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 786 transitions. [2021-12-22 08:34:09,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-22 08:34:09,085 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 786 transitions. [2021-12-22 08:34:09,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-22 08:34:09,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:09,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:09,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-22 08:34:09,087 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:09,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:09,087 INFO L85 PathProgramCache]: Analyzing trace with hash 309046761, now seen corresponding path program 1 times [2021-12-22 08:34:09,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:09,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384320401] [2021-12-22 08:34:09,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:09,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:09,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 08:34:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:09,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 08:34:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:09,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:09,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:09,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384320401] [2021-12-22 08:34:09,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384320401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:09,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:09,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 08:34:09,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551169678] [2021-12-22 08:34:09,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:09,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 08:34:09,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:09,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 08:34:09,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 08:34:09,142 INFO L87 Difference]: Start difference. First operand 596 states and 786 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:09,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:09,465 INFO L93 Difference]: Finished difference Result 630 states and 826 transitions. [2021-12-22 08:34:09,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 08:34:09,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2021-12-22 08:34:09,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:09,467 INFO L225 Difference]: With dead ends: 630 [2021-12-22 08:34:09,467 INFO L226 Difference]: Without dead ends: 576 [2021-12-22 08:34:09,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-12-22 08:34:09,470 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 266 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:09,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2787 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:34:09,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-12-22 08:34:09,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 569. [2021-12-22 08:34:09,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 481 states have (on average 1.288981288981289) internal successors, (620), 489 states have internal predecessors, (620), 56 states have call successors, (56), 25 states have call predecessors, (56), 31 states have return successors, (63), 54 states have call predecessors, (63), 50 states have call successors, (63) [2021-12-22 08:34:09,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 739 transitions. [2021-12-22 08:34:09,498 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 739 transitions. Word has length 51 [2021-12-22 08:34:09,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:09,498 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 739 transitions. [2021-12-22 08:34:09,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:09,499 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 739 transitions. [2021-12-22 08:34:09,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-22 08:34:09,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:09,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:09,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-22 08:34:09,500 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:09,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:09,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1614181273, now seen corresponding path program 1 times [2021-12-22 08:34:09,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:09,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432008570] [2021-12-22 08:34:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:09,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:09,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 08:34:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:09,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 08:34:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:09,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:09,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:09,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432008570] [2021-12-22 08:34:09,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432008570] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:09,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:09,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:09,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619121433] [2021-12-22 08:34:09,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:09,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:09,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:09,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:09,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:09,538 INFO L87 Difference]: Start difference. First operand 569 states and 739 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:09,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:09,742 INFO L93 Difference]: Finished difference Result 610 states and 781 transitions. [2021-12-22 08:34:09,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 08:34:09,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2021-12-22 08:34:09,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:09,744 INFO L225 Difference]: With dead ends: 610 [2021-12-22 08:34:09,744 INFO L226 Difference]: Without dead ends: 563 [2021-12-22 08:34:09,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:09,744 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 179 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:09,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1760 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:09,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-12-22 08:34:09,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 559. [2021-12-22 08:34:09,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 473 states have (on average 1.285412262156448) internal successors, (608), 481 states have internal predecessors, (608), 54 states have call successors, (54), 25 states have call predecessors, (54), 31 states have return successors, (61), 52 states have call predecessors, (61), 48 states have call successors, (61) [2021-12-22 08:34:09,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 723 transitions. [2021-12-22 08:34:09,768 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 723 transitions. Word has length 51 [2021-12-22 08:34:09,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:09,768 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 723 transitions. [2021-12-22 08:34:09,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:09,768 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 723 transitions. [2021-12-22 08:34:09,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 08:34:09,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:09,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:09,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-22 08:34:09,770 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:09,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:09,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1624287433, now seen corresponding path program 1 times [2021-12-22 08:34:09,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:09,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873582453] [2021-12-22 08:34:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:09,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:09,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 08:34:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:09,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 08:34:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:09,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:09,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873582453] [2021-12-22 08:34:09,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873582453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:09,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:09,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:09,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717758849] [2021-12-22 08:34:09,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:09,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:09,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:09,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:09,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:09,805 INFO L87 Difference]: Start difference. First operand 559 states and 723 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:10,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:10,015 INFO L93 Difference]: Finished difference Result 586 states and 751 transitions. [2021-12-22 08:34:10,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 08:34:10,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2021-12-22 08:34:10,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:10,017 INFO L225 Difference]: With dead ends: 586 [2021-12-22 08:34:10,017 INFO L226 Difference]: Without dead ends: 554 [2021-12-22 08:34:10,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:10,017 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 96 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:10,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 2009 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:10,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-12-22 08:34:10,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2021-12-22 08:34:10,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 469 states have (on average 1.2857142857142858) internal successors, (603), 477 states have internal predecessors, (603), 53 states have call successors, (53), 25 states have call predecessors, (53), 31 states have return successors, (60), 51 states have call predecessors, (60), 47 states have call successors, (60) [2021-12-22 08:34:10,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 716 transitions. [2021-12-22 08:34:10,040 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 716 transitions. Word has length 52 [2021-12-22 08:34:10,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:10,041 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 716 transitions. [2021-12-22 08:34:10,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:10,041 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 716 transitions. [2021-12-22 08:34:10,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 08:34:10,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:10,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:10,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-22 08:34:10,042 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:10,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:10,043 INFO L85 PathProgramCache]: Analyzing trace with hash 576638373, now seen corresponding path program 1 times [2021-12-22 08:34:10,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:10,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016956317] [2021-12-22 08:34:10,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:10,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:10,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 08:34:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:10,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:10,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:10,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016956317] [2021-12-22 08:34:10,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016956317] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:10,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:10,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 08:34:10,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913009185] [2021-12-22 08:34:10,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:10,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 08:34:10,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:10,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 08:34:10,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:34:10,095 INFO L87 Difference]: Start difference. First operand 554 states and 716 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:10,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:10,399 INFO L93 Difference]: Finished difference Result 653 states and 844 transitions. [2021-12-22 08:34:10,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 08:34:10,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2021-12-22 08:34:10,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:10,404 INFO L225 Difference]: With dead ends: 653 [2021-12-22 08:34:10,404 INFO L226 Difference]: Without dead ends: 641 [2021-12-22 08:34:10,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:10,404 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 216 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:10,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 1241 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:34:10,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-12-22 08:34:10,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 586. [2021-12-22 08:34:10,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 499 states have (on average 1.280561122244489) internal successors, (639), 507 states have internal predecessors, (639), 53 states have call successors, (53), 25 states have call predecessors, (53), 33 states have return successors, (62), 53 states have call predecessors, (62), 47 states have call successors, (62) [2021-12-22 08:34:10,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 754 transitions. [2021-12-22 08:34:10,455 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 754 transitions. Word has length 52 [2021-12-22 08:34:10,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:10,455 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 754 transitions. [2021-12-22 08:34:10,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:10,456 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 754 transitions. [2021-12-22 08:34:10,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-22 08:34:10,459 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:10,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:10,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-22 08:34:10,459 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:10,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:10,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2037022253, now seen corresponding path program 1 times [2021-12-22 08:34:10,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:10,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901380853] [2021-12-22 08:34:10,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:10,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:10,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 08:34:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:10,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 08:34:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:10,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 08:34:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:10,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 08:34:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:10,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:10,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901380853] [2021-12-22 08:34:10,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901380853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:10,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:10,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 08:34:10,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063579411] [2021-12-22 08:34:10,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:10,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 08:34:10,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:10,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 08:34:10,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:34:10,514 INFO L87 Difference]: Start difference. First operand 586 states and 754 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 08:34:10,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:10,764 INFO L93 Difference]: Finished difference Result 716 states and 919 transitions. [2021-12-22 08:34:10,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 08:34:10,764 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2021-12-22 08:34:10,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:10,765 INFO L225 Difference]: With dead ends: 716 [2021-12-22 08:34:10,765 INFO L226 Difference]: Without dead ends: 643 [2021-12-22 08:34:10,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-22 08:34:10,766 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 417 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:10,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 1309 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:10,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-12-22 08:34:10,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 626. [2021-12-22 08:34:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 533 states have (on average 1.2870544090056286) internal successors, (686), 540 states have internal predecessors, (686), 55 states have call successors, (55), 28 states have call predecessors, (55), 37 states have return successors, (67), 57 states have call predecessors, (67), 50 states have call successors, (67) [2021-12-22 08:34:10,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 808 transitions. [2021-12-22 08:34:10,793 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 808 transitions. Word has length 56 [2021-12-22 08:34:10,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:10,793 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 808 transitions. [2021-12-22 08:34:10,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 08:34:10,793 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 808 transitions. [2021-12-22 08:34:10,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-22 08:34:10,794 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:10,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:10,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-22 08:34:10,794 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:10,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:10,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1140697567, now seen corresponding path program 1 times [2021-12-22 08:34:10,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:10,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034898373] [2021-12-22 08:34:10,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:10,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:10,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 08:34:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:10,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:10,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:10,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034898373] [2021-12-22 08:34:10,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034898373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:10,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:10,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:10,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010962366] [2021-12-22 08:34:10,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:10,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:10,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:10,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:10,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:10,833 INFO L87 Difference]: Start difference. First operand 626 states and 808 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:11,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:11,244 INFO L93 Difference]: Finished difference Result 687 states and 887 transitions. [2021-12-22 08:34:11,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 08:34:11,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2021-12-22 08:34:11,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:11,247 INFO L225 Difference]: With dead ends: 687 [2021-12-22 08:34:11,247 INFO L226 Difference]: Without dead ends: 678 [2021-12-22 08:34:11,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-22 08:34:11,248 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 747 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:11,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 1443 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:34:11,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-12-22 08:34:11,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 626. [2021-12-22 08:34:11,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 533 states have (on average 1.2833020637898687) internal successors, (684), 540 states have internal predecessors, (684), 55 states have call successors, (55), 28 states have call predecessors, (55), 37 states have return successors, (67), 57 states have call predecessors, (67), 50 states have call successors, (67) [2021-12-22 08:34:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 806 transitions. [2021-12-22 08:34:11,286 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 806 transitions. Word has length 53 [2021-12-22 08:34:11,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:11,286 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 806 transitions. [2021-12-22 08:34:11,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:11,286 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 806 transitions. [2021-12-22 08:34:11,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-22 08:34:11,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:11,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:11,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-22 08:34:11,287 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:11,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:11,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1949554969, now seen corresponding path program 1 times [2021-12-22 08:34:11,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:11,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032114287] [2021-12-22 08:34:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:11,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:11,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 08:34:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:11,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 08:34:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:11,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 08:34:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:11,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:11,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:11,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032114287] [2021-12-22 08:34:11,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032114287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:11,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:11,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 08:34:11,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693117507] [2021-12-22 08:34:11,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:11,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 08:34:11,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:11,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 08:34:11,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-22 08:34:11,381 INFO L87 Difference]: Start difference. First operand 626 states and 806 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-22 08:34:11,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:11,993 INFO L93 Difference]: Finished difference Result 669 states and 855 transitions. [2021-12-22 08:34:11,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 08:34:11,993 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 59 [2021-12-22 08:34:11,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:11,995 INFO L225 Difference]: With dead ends: 669 [2021-12-22 08:34:11,995 INFO L226 Difference]: Without dead ends: 649 [2021-12-22 08:34:11,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-12-22 08:34:11,995 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 243 mSDsluCounter, 3880 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 4308 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:11,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 4308 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 08:34:11,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-12-22 08:34:12,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 624. [2021-12-22 08:34:12,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 532 states have (on average 1.281954887218045) internal successors, (682), 539 states have internal predecessors, (682), 54 states have call successors, (54), 28 states have call predecessors, (54), 37 states have return successors, (66), 56 states have call predecessors, (66), 49 states have call successors, (66) [2021-12-22 08:34:12,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 802 transitions. [2021-12-22 08:34:12,026 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 802 transitions. Word has length 59 [2021-12-22 08:34:12,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:12,026 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 802 transitions. [2021-12-22 08:34:12,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-22 08:34:12,026 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 802 transitions. [2021-12-22 08:34:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-22 08:34:12,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:12,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:12,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-22 08:34:12,027 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:12,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:12,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1478759627, now seen corresponding path program 1 times [2021-12-22 08:34:12,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:12,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424356492] [2021-12-22 08:34:12,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:12,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:12,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 08:34:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:12,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 08:34:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:12,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:12,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:12,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424356492] [2021-12-22 08:34:12,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424356492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:12,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:12,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-22 08:34:12,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136481697] [2021-12-22 08:34:12,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:12,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-22 08:34:12,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:12,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-22 08:34:12,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-12-22 08:34:12,142 INFO L87 Difference]: Start difference. First operand 624 states and 802 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-22 08:34:12,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:12,806 INFO L93 Difference]: Finished difference Result 644 states and 823 transitions. [2021-12-22 08:34:12,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 08:34:12,807 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2021-12-22 08:34:12,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:12,808 INFO L225 Difference]: With dead ends: 644 [2021-12-22 08:34:12,808 INFO L226 Difference]: Without dead ends: 620 [2021-12-22 08:34:12,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2021-12-22 08:34:12,809 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 232 mSDsluCounter, 4314 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 4718 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:12,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 4718 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 08:34:12,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-12-22 08:34:12,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2021-12-22 08:34:12,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 529 states have (on average 1.281663516068053) internal successors, (678), 536 states have internal predecessors, (678), 53 states have call successors, (53), 28 states have call predecessors, (53), 37 states have return successors, (65), 55 states have call predecessors, (65), 48 states have call successors, (65) [2021-12-22 08:34:12,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 796 transitions. [2021-12-22 08:34:12,837 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 796 transitions. Word has length 55 [2021-12-22 08:34:12,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:12,838 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 796 transitions. [2021-12-22 08:34:12,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-22 08:34:12,838 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 796 transitions. [2021-12-22 08:34:12,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-22 08:34:12,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:12,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:12,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-22 08:34:12,839 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:12,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:12,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1059320829, now seen corresponding path program 1 times [2021-12-22 08:34:12,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:12,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434179350] [2021-12-22 08:34:12,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:12,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:12,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 08:34:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:12,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 08:34:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:12,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:12,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434179350] [2021-12-22 08:34:12,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434179350] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:12,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:12,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:12,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999739396] [2021-12-22 08:34:12,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:12,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:12,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:12,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:12,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:12,891 INFO L87 Difference]: Start difference. First operand 620 states and 796 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:13,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:13,112 INFO L93 Difference]: Finished difference Result 647 states and 824 transitions. [2021-12-22 08:34:13,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 08:34:13,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2021-12-22 08:34:13,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:13,113 INFO L225 Difference]: With dead ends: 647 [2021-12-22 08:34:13,114 INFO L226 Difference]: Without dead ends: 615 [2021-12-22 08:34:13,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:13,114 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 171 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:13,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 1682 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:13,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-12-22 08:34:13,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2021-12-22 08:34:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 525 states have (on average 1.2819047619047619) internal successors, (673), 532 states have internal predecessors, (673), 52 states have call successors, (52), 28 states have call predecessors, (52), 37 states have return successors, (64), 54 states have call predecessors, (64), 47 states have call successors, (64) [2021-12-22 08:34:13,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 789 transitions. [2021-12-22 08:34:13,149 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 789 transitions. Word has length 54 [2021-12-22 08:34:13,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:13,149 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 789 transitions. [2021-12-22 08:34:13,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:13,149 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 789 transitions. [2021-12-22 08:34:13,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-22 08:34:13,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:13,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:13,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-22 08:34:13,151 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:13,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:13,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1513227889, now seen corresponding path program 1 times [2021-12-22 08:34:13,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:13,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075739248] [2021-12-22 08:34:13,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:13,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 08:34:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:13,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 08:34:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:13,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:13,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075739248] [2021-12-22 08:34:13,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075739248] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:13,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:13,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 08:34:13,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988379865] [2021-12-22 08:34:13,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:13,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 08:34:13,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:13,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 08:34:13,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-22 08:34:13,213 INFO L87 Difference]: Start difference. First operand 615 states and 789 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:13,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:13,541 INFO L93 Difference]: Finished difference Result 638 states and 814 transitions. [2021-12-22 08:34:13,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 08:34:13,541 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2021-12-22 08:34:13,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:13,543 INFO L225 Difference]: With dead ends: 638 [2021-12-22 08:34:13,543 INFO L226 Difference]: Without dead ends: 612 [2021-12-22 08:34:13,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-12-22 08:34:13,544 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 232 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:13,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 3088 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:34:13,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-12-22 08:34:13,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2021-12-22 08:34:13,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 523 states have (on average 1.2810707456978967) internal successors, (670), 530 states have internal predecessors, (670), 51 states have call successors, (51), 28 states have call predecessors, (51), 37 states have return successors, (63), 53 states have call predecessors, (63), 46 states have call successors, (63) [2021-12-22 08:34:13,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 784 transitions. [2021-12-22 08:34:13,578 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 784 transitions. Word has length 54 [2021-12-22 08:34:13,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:13,578 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 784 transitions. [2021-12-22 08:34:13,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:13,579 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 784 transitions. [2021-12-22 08:34:13,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-22 08:34:13,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:13,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:13,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-22 08:34:13,580 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:13,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:13,580 INFO L85 PathProgramCache]: Analyzing trace with hash 362195338, now seen corresponding path program 1 times [2021-12-22 08:34:13,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:13,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399520178] [2021-12-22 08:34:13,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:13,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:13,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 08:34:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:13,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:13,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:13,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:13,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399520178] [2021-12-22 08:34:13,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399520178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:13,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:13,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:13,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205609228] [2021-12-22 08:34:13,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:13,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:13,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:13,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:13,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:13,629 INFO L87 Difference]: Start difference. First operand 612 states and 784 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:14,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:14,042 INFO L93 Difference]: Finished difference Result 668 states and 856 transitions. [2021-12-22 08:34:14,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 08:34:14,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2021-12-22 08:34:14,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:14,044 INFO L225 Difference]: With dead ends: 668 [2021-12-22 08:34:14,044 INFO L226 Difference]: Without dead ends: 664 [2021-12-22 08:34:14,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-22 08:34:14,045 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 723 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:14,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 1361 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:34:14,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-12-22 08:34:14,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 609. [2021-12-22 08:34:14,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 520 states have (on average 1.2788461538461537) internal successors, (665), 527 states have internal predecessors, (665), 51 states have call successors, (51), 28 states have call predecessors, (51), 37 states have return successors, (63), 53 states have call predecessors, (63), 46 states have call successors, (63) [2021-12-22 08:34:14,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 779 transitions. [2021-12-22 08:34:14,075 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 779 transitions. Word has length 54 [2021-12-22 08:34:14,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:14,075 INFO L470 AbstractCegarLoop]: Abstraction has 609 states and 779 transitions. [2021-12-22 08:34:14,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:14,076 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 779 transitions. [2021-12-22 08:34:14,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-22 08:34:14,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:14,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:14,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-22 08:34:14,077 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:14,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:14,077 INFO L85 PathProgramCache]: Analyzing trace with hash 362472168, now seen corresponding path program 1 times [2021-12-22 08:34:14,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:14,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498338528] [2021-12-22 08:34:14,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:14,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:14,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 08:34:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:14,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:14,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:14,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:14,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498338528] [2021-12-22 08:34:14,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498338528] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:14,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:14,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 08:34:14,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581807945] [2021-12-22 08:34:14,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:14,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 08:34:14,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:14,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 08:34:14,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-22 08:34:14,169 INFO L87 Difference]: Start difference. First operand 609 states and 779 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:14,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:14,658 INFO L93 Difference]: Finished difference Result 619 states and 788 transitions. [2021-12-22 08:34:14,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 08:34:14,658 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2021-12-22 08:34:14,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:14,659 INFO L225 Difference]: With dead ends: 619 [2021-12-22 08:34:14,659 INFO L226 Difference]: Without dead ends: 591 [2021-12-22 08:34:14,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-12-22 08:34:14,660 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 287 mSDsluCounter, 2203 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:14,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2575 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 08:34:14,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-12-22 08:34:14,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 587. [2021-12-22 08:34:14,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 499 states have (on average 1.2725450901803608) internal successors, (635), 506 states have internal predecessors, (635), 51 states have call successors, (51), 28 states have call predecessors, (51), 36 states have return successors, (62), 52 states have call predecessors, (62), 46 states have call successors, (62) [2021-12-22 08:34:14,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 748 transitions. [2021-12-22 08:34:14,691 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 748 transitions. Word has length 54 [2021-12-22 08:34:14,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:14,691 INFO L470 AbstractCegarLoop]: Abstraction has 587 states and 748 transitions. [2021-12-22 08:34:14,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:14,691 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 748 transitions. [2021-12-22 08:34:14,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-22 08:34:14,692 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:14,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:14,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-22 08:34:14,693 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:14,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:14,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1415863677, now seen corresponding path program 1 times [2021-12-22 08:34:14,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:14,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682018244] [2021-12-22 08:34:14,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:14,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:14,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 08:34:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:14,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:14,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:14,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682018244] [2021-12-22 08:34:14,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682018244] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:14,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:14,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 08:34:14,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123875643] [2021-12-22 08:34:14,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:14,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 08:34:14,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:14,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 08:34:14,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:34:14,750 INFO L87 Difference]: Start difference. First operand 587 states and 748 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:14,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:14,982 INFO L93 Difference]: Finished difference Result 613 states and 778 transitions. [2021-12-22 08:34:14,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 08:34:14,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2021-12-22 08:34:14,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:14,984 INFO L225 Difference]: With dead ends: 613 [2021-12-22 08:34:14,984 INFO L226 Difference]: Without dead ends: 580 [2021-12-22 08:34:14,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:14,985 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 232 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:14,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 951 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:14,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-12-22 08:34:15,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 576. [2021-12-22 08:34:15,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 489 states have (on average 1.2638036809815951) internal successors, (618), 496 states have internal predecessors, (618), 51 states have call successors, (51), 28 states have call predecessors, (51), 35 states have return successors, (61), 51 states have call predecessors, (61), 46 states have call successors, (61) [2021-12-22 08:34:15,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 730 transitions. [2021-12-22 08:34:15,014 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 730 transitions. Word has length 54 [2021-12-22 08:34:15,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:15,014 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 730 transitions. [2021-12-22 08:34:15,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:15,014 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 730 transitions. [2021-12-22 08:34:15,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-22 08:34:15,015 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:15,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:15,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-12-22 08:34:15,015 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:15,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:15,016 INFO L85 PathProgramCache]: Analyzing trace with hash -275547021, now seen corresponding path program 1 times [2021-12-22 08:34:15,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:15,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108748259] [2021-12-22 08:34:15,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:15,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:15,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 08:34:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 08:34:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:15,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:15,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:15,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108748259] [2021-12-22 08:34:15,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108748259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:15,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:15,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 08:34:15,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864022882] [2021-12-22 08:34:15,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:15,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 08:34:15,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:15,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 08:34:15,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:15,076 INFO L87 Difference]: Start difference. First operand 576 states and 730 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 08:34:15,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:15,358 INFO L93 Difference]: Finished difference Result 625 states and 782 transitions. [2021-12-22 08:34:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 08:34:15,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2021-12-22 08:34:15,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:15,359 INFO L225 Difference]: With dead ends: 625 [2021-12-22 08:34:15,360 INFO L226 Difference]: Without dead ends: 594 [2021-12-22 08:34:15,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-22 08:34:15,360 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 282 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:15,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 1596 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:15,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-12-22 08:34:15,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 576. [2021-12-22 08:34:15,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 489 states have (on average 1.261758691206544) internal successors, (617), 496 states have internal predecessors, (617), 51 states have call successors, (51), 28 states have call predecessors, (51), 35 states have return successors, (61), 51 states have call predecessors, (61), 46 states have call successors, (61) [2021-12-22 08:34:15,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 729 transitions. [2021-12-22 08:34:15,389 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 729 transitions. Word has length 56 [2021-12-22 08:34:15,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:15,389 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 729 transitions. [2021-12-22 08:34:15,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 08:34:15,389 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 729 transitions. [2021-12-22 08:34:15,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-22 08:34:15,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:15,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:15,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-12-22 08:34:15,390 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:15,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:15,390 INFO L85 PathProgramCache]: Analyzing trace with hash -252914767, now seen corresponding path program 1 times [2021-12-22 08:34:15,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:15,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674026578] [2021-12-22 08:34:15,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:15,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:15,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 08:34:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:15,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 08:34:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:15,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:15,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:15,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674026578] [2021-12-22 08:34:15,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674026578] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:15,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:15,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 08:34:15,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539792044] [2021-12-22 08:34:15,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:15,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 08:34:15,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:15,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 08:34:15,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-22 08:34:15,496 INFO L87 Difference]: Start difference. First operand 576 states and 729 transitions. Second operand has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-22 08:34:16,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:16,052 INFO L93 Difference]: Finished difference Result 619 states and 778 transitions. [2021-12-22 08:34:16,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 08:34:16,052 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2021-12-22 08:34:16,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:16,053 INFO L225 Difference]: With dead ends: 619 [2021-12-22 08:34:16,053 INFO L226 Difference]: Without dead ends: 589 [2021-12-22 08:34:16,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-12-22 08:34:16,054 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 260 mSDsluCounter, 3235 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 3626 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:16,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 3626 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 08:34:16,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-12-22 08:34:16,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 571. [2021-12-22 08:34:16,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 485 states have (on average 1.2577319587628866) internal successors, (610), 492 states have internal predecessors, (610), 50 states have call successors, (50), 28 states have call predecessors, (50), 35 states have return successors, (59), 50 states have call predecessors, (59), 45 states have call successors, (59) [2021-12-22 08:34:16,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 719 transitions. [2021-12-22 08:34:16,083 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 719 transitions. Word has length 56 [2021-12-22 08:34:16,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:16,084 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 719 transitions. [2021-12-22 08:34:16,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-22 08:34:16,084 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 719 transitions. [2021-12-22 08:34:16,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-22 08:34:16,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:16,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:16,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-12-22 08:34:16,085 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:16,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:16,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1867013461, now seen corresponding path program 1 times [2021-12-22 08:34:16,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:16,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108825031] [2021-12-22 08:34:16,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:16,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:16,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 08:34:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:16,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 08:34:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:16,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:16,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:16,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108825031] [2021-12-22 08:34:16,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108825031] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:16,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:16,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 08:34:16,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804482650] [2021-12-22 08:34:16,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:16,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 08:34:16,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:16,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 08:34:16,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:16,128 INFO L87 Difference]: Start difference. First operand 571 states and 719 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 08:34:16,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:16,424 INFO L93 Difference]: Finished difference Result 602 states and 751 transitions. [2021-12-22 08:34:16,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 08:34:16,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2021-12-22 08:34:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:16,425 INFO L225 Difference]: With dead ends: 602 [2021-12-22 08:34:16,426 INFO L226 Difference]: Without dead ends: 565 [2021-12-22 08:34:16,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-22 08:34:16,426 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 170 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:16,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 1894 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:16,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-12-22 08:34:16,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2021-12-22 08:34:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 480 states have (on average 1.2583333333333333) internal successors, (604), 487 states have internal predecessors, (604), 49 states have call successors, (49), 28 states have call predecessors, (49), 35 states have return successors, (58), 49 states have call predecessors, (58), 44 states have call successors, (58) [2021-12-22 08:34:16,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 711 transitions. [2021-12-22 08:34:16,454 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 711 transitions. Word has length 56 [2021-12-22 08:34:16,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:16,454 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 711 transitions. [2021-12-22 08:34:16,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 08:34:16,454 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 711 transitions. [2021-12-22 08:34:16,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-22 08:34:16,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:16,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:16,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-12-22 08:34:16,455 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:16,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:16,456 INFO L85 PathProgramCache]: Analyzing trace with hash -929165957, now seen corresponding path program 1 times [2021-12-22 08:34:16,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:16,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546000197] [2021-12-22 08:34:16,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:16,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:16,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 08:34:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:16,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:16,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:16,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:16,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546000197] [2021-12-22 08:34:16,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546000197] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:16,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:16,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 08:34:16,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990360075] [2021-12-22 08:34:16,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:16,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 08:34:16,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:16,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 08:34:16,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-22 08:34:16,555 INFO L87 Difference]: Start difference. First operand 565 states and 711 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:17,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:17,042 INFO L93 Difference]: Finished difference Result 722 states and 895 transitions. [2021-12-22 08:34:17,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 08:34:17,042 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2021-12-22 08:34:17,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:17,044 INFO L225 Difference]: With dead ends: 722 [2021-12-22 08:34:17,044 INFO L226 Difference]: Without dead ends: 604 [2021-12-22 08:34:17,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-12-22 08:34:17,045 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 217 mSDsluCounter, 2522 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2879 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:17,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 2879 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 08:34:17,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-12-22 08:34:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 571. [2021-12-22 08:34:17,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 486 states have (on average 1.2469135802469136) internal successors, (606), 493 states have internal predecessors, (606), 49 states have call successors, (49), 28 states have call predecessors, (49), 35 states have return successors, (58), 49 states have call predecessors, (58), 44 states have call successors, (58) [2021-12-22 08:34:17,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 713 transitions. [2021-12-22 08:34:17,073 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 713 transitions. Word has length 56 [2021-12-22 08:34:17,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:17,073 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 713 transitions. [2021-12-22 08:34:17,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:17,074 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 713 transitions. [2021-12-22 08:34:17,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-22 08:34:17,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:17,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:17,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-12-22 08:34:17,075 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:17,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:17,075 INFO L85 PathProgramCache]: Analyzing trace with hash -535968494, now seen corresponding path program 1 times [2021-12-22 08:34:17,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:17,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450094421] [2021-12-22 08:34:17,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:17,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:17,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 08:34:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:17,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 08:34:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:17,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 08:34:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:17,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:17,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:17,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450094421] [2021-12-22 08:34:17,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450094421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:17,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:17,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 08:34:17,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61488541] [2021-12-22 08:34:17,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:17,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 08:34:17,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:17,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 08:34:17,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-22 08:34:17,180 INFO L87 Difference]: Start difference. First operand 571 states and 713 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-22 08:34:17,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:17,683 INFO L93 Difference]: Finished difference Result 591 states and 734 transitions. [2021-12-22 08:34:17,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 08:34:17,684 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 62 [2021-12-22 08:34:17,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:17,685 INFO L225 Difference]: With dead ends: 591 [2021-12-22 08:34:17,685 INFO L226 Difference]: Without dead ends: 569 [2021-12-22 08:34:17,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-12-22 08:34:17,686 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 235 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 3283 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:17,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 3283 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 08:34:17,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-12-22 08:34:17,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2021-12-22 08:34:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 484 states have (on average 1.2458677685950412) internal successors, (603), 491 states have internal predecessors, (603), 49 states have call successors, (49), 28 states have call predecessors, (49), 35 states have return successors, (58), 49 states have call predecessors, (58), 44 states have call successors, (58) [2021-12-22 08:34:17,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 710 transitions. [2021-12-22 08:34:17,715 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 710 transitions. Word has length 62 [2021-12-22 08:34:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:17,715 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 710 transitions. [2021-12-22 08:34:17,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-22 08:34:17,715 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 710 transitions. [2021-12-22 08:34:17,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-22 08:34:17,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:17,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:17,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-12-22 08:34:17,717 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:17,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:17,718 INFO L85 PathProgramCache]: Analyzing trace with hash -274878733, now seen corresponding path program 1 times [2021-12-22 08:34:17,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:17,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884012359] [2021-12-22 08:34:17,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:17,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:17,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 08:34:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:17,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 08:34:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:17,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 08:34:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:17,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:17,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:17,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:17,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884012359] [2021-12-22 08:34:17,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884012359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:17,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:17,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 08:34:17,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677688189] [2021-12-22 08:34:17,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:17,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 08:34:17,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:17,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 08:34:17,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:17,764 INFO L87 Difference]: Start difference. First operand 569 states and 710 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 08:34:18,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:18,053 INFO L93 Difference]: Finished difference Result 600 states and 742 transitions. [2021-12-22 08:34:18,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 08:34:18,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 63 [2021-12-22 08:34:18,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:18,054 INFO L225 Difference]: With dead ends: 600 [2021-12-22 08:34:18,054 INFO L226 Difference]: Without dead ends: 553 [2021-12-22 08:34:18,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-22 08:34:18,056 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 170 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:18,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 1754 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:18,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-12-22 08:34:18,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2021-12-22 08:34:18,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 471 states have (on average 1.2420382165605095) internal successors, (585), 478 states have internal predecessors, (585), 46 states have call successors, (46), 28 states have call predecessors, (46), 35 states have return successors, (54), 46 states have call predecessors, (54), 41 states have call successors, (54) [2021-12-22 08:34:18,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 685 transitions. [2021-12-22 08:34:18,083 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 685 transitions. Word has length 63 [2021-12-22 08:34:18,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:18,083 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 685 transitions. [2021-12-22 08:34:18,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 08:34:18,083 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 685 transitions. [2021-12-22 08:34:18,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-22 08:34:18,084 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:18,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:18,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-12-22 08:34:18,084 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:18,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:18,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1927582732, now seen corresponding path program 1 times [2021-12-22 08:34:18,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:18,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749876214] [2021-12-22 08:34:18,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:18,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:18,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 08:34:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:18,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 08:34:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:18,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:18,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:18,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:18,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749876214] [2021-12-22 08:34:18,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749876214] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:18,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:18,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 08:34:18,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533644591] [2021-12-22 08:34:18,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:18,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 08:34:18,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:18,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 08:34:18,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:18,139 INFO L87 Difference]: Start difference. First operand 553 states and 685 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 08:34:18,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:18,410 INFO L93 Difference]: Finished difference Result 584 states and 717 transitions. [2021-12-22 08:34:18,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 08:34:18,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2021-12-22 08:34:18,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:18,411 INFO L225 Difference]: With dead ends: 584 [2021-12-22 08:34:18,412 INFO L226 Difference]: Without dead ends: 540 [2021-12-22 08:34:18,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-22 08:34:18,412 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 264 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:18,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 1315 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:18,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-12-22 08:34:18,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2021-12-22 08:34:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 459 states have (on average 1.2374727668845316) internal successors, (568), 466 states have internal predecessors, (568), 45 states have call successors, (45), 28 states have call predecessors, (45), 35 states have return successors, (53), 45 states have call predecessors, (53), 40 states have call successors, (53) [2021-12-22 08:34:18,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 666 transitions. [2021-12-22 08:34:18,440 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 666 transitions. Word has length 58 [2021-12-22 08:34:18,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:18,441 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 666 transitions. [2021-12-22 08:34:18,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 08:34:18,441 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 666 transitions. [2021-12-22 08:34:18,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-22 08:34:18,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:18,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:18,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-12-22 08:34:18,442 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:18,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:18,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1948179698, now seen corresponding path program 1 times [2021-12-22 08:34:18,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:18,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042505697] [2021-12-22 08:34:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:18,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:18,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 08:34:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:18,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 08:34:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:18,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:18,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:18,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:18,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042505697] [2021-12-22 08:34:18,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042505697] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:18,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:18,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-22 08:34:18,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192121981] [2021-12-22 08:34:18,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:18,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 08:34:18,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:18,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 08:34:18,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-22 08:34:18,577 INFO L87 Difference]: Start difference. First operand 540 states and 666 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 08:34:19,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:19,205 INFO L93 Difference]: Finished difference Result 556 states and 682 transitions. [2021-12-22 08:34:19,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 08:34:19,205 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 64 [2021-12-22 08:34:19,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:19,206 INFO L225 Difference]: With dead ends: 556 [2021-12-22 08:34:19,206 INFO L226 Difference]: Without dead ends: 535 [2021-12-22 08:34:19,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-12-22 08:34:19,207 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 207 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:19,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 2663 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1332 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 08:34:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-12-22 08:34:19,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2021-12-22 08:34:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 456 states have (on average 1.236842105263158) internal successors, (564), 463 states have internal predecessors, (564), 43 states have call successors, (43), 28 states have call predecessors, (43), 35 states have return successors, (51), 43 states have call predecessors, (51), 38 states have call successors, (51) [2021-12-22 08:34:19,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 658 transitions. [2021-12-22 08:34:19,234 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 658 transitions. Word has length 64 [2021-12-22 08:34:19,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:19,234 INFO L470 AbstractCegarLoop]: Abstraction has 535 states and 658 transitions. [2021-12-22 08:34:19,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 08:34:19,234 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 658 transitions. [2021-12-22 08:34:19,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-22 08:34:19,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:19,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:19,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-12-22 08:34:19,235 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:19,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:19,236 INFO L85 PathProgramCache]: Analyzing trace with hash 233509778, now seen corresponding path program 1 times [2021-12-22 08:34:19,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:19,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372625325] [2021-12-22 08:34:19,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:19,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:19,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 08:34:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:19,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:19,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:19,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372625325] [2021-12-22 08:34:19,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372625325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:19,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:19,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 08:34:19,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072354023] [2021-12-22 08:34:19,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:19,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 08:34:19,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:19,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 08:34:19,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-22 08:34:19,341 INFO L87 Difference]: Start difference. First operand 535 states and 658 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:19,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:19,795 INFO L93 Difference]: Finished difference Result 537 states and 659 transitions. [2021-12-22 08:34:19,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 08:34:19,796 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-12-22 08:34:19,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:19,797 INFO L225 Difference]: With dead ends: 537 [2021-12-22 08:34:19,797 INFO L226 Difference]: Without dead ends: 493 [2021-12-22 08:34:19,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-12-22 08:34:19,797 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 115 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:19,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 2522 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 08:34:19,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-12-22 08:34:19,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2021-12-22 08:34:19,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 419 states have (on average 1.2458233890214798) internal successors, (522), 425 states have internal predecessors, (522), 40 states have call successors, (40), 26 states have call predecessors, (40), 33 states have return successors, (49), 41 states have call predecessors, (49), 36 states have call successors, (49) [2021-12-22 08:34:19,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 611 transitions. [2021-12-22 08:34:19,834 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 611 transitions. Word has length 57 [2021-12-22 08:34:19,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:19,835 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 611 transitions. [2021-12-22 08:34:19,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:19,835 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 611 transitions. [2021-12-22 08:34:19,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-22 08:34:19,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:19,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:19,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-12-22 08:34:19,836 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:19,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:19,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1034079897, now seen corresponding path program 1 times [2021-12-22 08:34:19,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:19,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547621385] [2021-12-22 08:34:19,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:19,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:19,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 08:34:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:19,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:19,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 08:34:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:19,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:19,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:19,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547621385] [2021-12-22 08:34:19,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547621385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:19,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:19,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 08:34:19,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218708438] [2021-12-22 08:34:19,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:19,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 08:34:19,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:19,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 08:34:19,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-22 08:34:19,954 INFO L87 Difference]: Start difference. First operand 493 states and 611 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-22 08:34:20,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:20,977 INFO L93 Difference]: Finished difference Result 1028 states and 1263 transitions. [2021-12-22 08:34:20,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-22 08:34:20,977 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2021-12-22 08:34:20,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:20,980 INFO L225 Difference]: With dead ends: 1028 [2021-12-22 08:34:20,980 INFO L226 Difference]: Without dead ends: 908 [2021-12-22 08:34:20,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=273, Invalid=1287, Unknown=0, NotChecked=0, Total=1560 [2021-12-22 08:34:20,981 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 686 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:20,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 2347 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 08:34:20,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-12-22 08:34:21,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 717. [2021-12-22 08:34:21,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 604 states have (on average 1.2450331125827814) internal successors, (752), 616 states have internal predecessors, (752), 59 states have call successors, (59), 42 states have call predecessors, (59), 53 states have return successors, (75), 58 states have call predecessors, (75), 55 states have call successors, (75) [2021-12-22 08:34:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 886 transitions. [2021-12-22 08:34:21,035 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 886 transitions. Word has length 58 [2021-12-22 08:34:21,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:21,035 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 886 transitions. [2021-12-22 08:34:21,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-22 08:34:21,036 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 886 transitions. [2021-12-22 08:34:21,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-22 08:34:21,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:21,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:21,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-12-22 08:34:21,037 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:21,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:21,037 INFO L85 PathProgramCache]: Analyzing trace with hash -158060891, now seen corresponding path program 1 times [2021-12-22 08:34:21,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:21,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684964148] [2021-12-22 08:34:21,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:21,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:21,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 08:34:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:21,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:21,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 08:34:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:21,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:21,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684964148] [2021-12-22 08:34:21,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684964148] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:21,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:21,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:21,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717606851] [2021-12-22 08:34:21,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:21,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:21,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:21,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:21,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:21,082 INFO L87 Difference]: Start difference. First operand 717 states and 886 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-22 08:34:21,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:21,546 INFO L93 Difference]: Finished difference Result 1014 states and 1243 transitions. [2021-12-22 08:34:21,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 08:34:21,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2021-12-22 08:34:21,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:21,548 INFO L225 Difference]: With dead ends: 1014 [2021-12-22 08:34:21,548 INFO L226 Difference]: Without dead ends: 905 [2021-12-22 08:34:21,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-12-22 08:34:21,549 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 789 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:21,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 1894 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 08:34:21,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-12-22 08:34:21,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 537. [2021-12-22 08:34:21,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 458 states have (on average 1.2314410480349345) internal successors, (564), 464 states have internal predecessors, (564), 42 states have call successors, (42), 30 states have call predecessors, (42), 36 states have return successors, (51), 42 states have call predecessors, (51), 38 states have call successors, (51) [2021-12-22 08:34:21,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 657 transitions. [2021-12-22 08:34:21,585 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 657 transitions. Word has length 58 [2021-12-22 08:34:21,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:21,586 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 657 transitions. [2021-12-22 08:34:21,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-22 08:34:21,586 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 657 transitions. [2021-12-22 08:34:21,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-22 08:34:21,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:21,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:21,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-12-22 08:34:21,587 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:21,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:21,587 INFO L85 PathProgramCache]: Analyzing trace with hash 273629316, now seen corresponding path program 1 times [2021-12-22 08:34:21,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:21,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285453418] [2021-12-22 08:34:21,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:21,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:21,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 08:34:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:21,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 08:34:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:21,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 08:34:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:21,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 08:34:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:21,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:21,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285453418] [2021-12-22 08:34:21,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285453418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:21,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:21,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 08:34:21,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208172799] [2021-12-22 08:34:21,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:21,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 08:34:21,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:21,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 08:34:21,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-22 08:34:21,699 INFO L87 Difference]: Start difference. First operand 537 states and 657 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-22 08:34:22,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:22,175 INFO L93 Difference]: Finished difference Result 554 states and 674 transitions. [2021-12-22 08:34:22,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 08:34:22,175 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 60 [2021-12-22 08:34:22,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:22,176 INFO L225 Difference]: With dead ends: 554 [2021-12-22 08:34:22,176 INFO L226 Difference]: Without dead ends: 504 [2021-12-22 08:34:22,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-12-22 08:34:22,177 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 218 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:22,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 2596 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 08:34:22,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-12-22 08:34:22,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2021-12-22 08:34:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 432 states have (on average 1.2222222222222223) internal successors, (528), 438 states have internal predecessors, (528), 37 states have call successors, (37), 28 states have call predecessors, (37), 34 states have return successors, (45), 37 states have call predecessors, (45), 33 states have call successors, (45) [2021-12-22 08:34:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 610 transitions. [2021-12-22 08:34:22,213 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 610 transitions. Word has length 60 [2021-12-22 08:34:22,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:22,213 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 610 transitions. [2021-12-22 08:34:22,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-22 08:34:22,213 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 610 transitions. [2021-12-22 08:34:22,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-22 08:34:22,214 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:22,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:22,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-12-22 08:34:22,214 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:22,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:22,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1406802114, now seen corresponding path program 1 times [2021-12-22 08:34:22,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:22,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147529476] [2021-12-22 08:34:22,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:22,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:22,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 08:34:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:22,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 08:34:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:22,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:22,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:22,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147529476] [2021-12-22 08:34:22,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147529476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:22,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:22,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:22,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935359438] [2021-12-22 08:34:22,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:22,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:22,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:22,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:22,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:22,250 INFO L87 Difference]: Start difference. First operand 504 states and 610 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:22,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:22,515 INFO L93 Difference]: Finished difference Result 531 states and 638 transitions. [2021-12-22 08:34:22,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 08:34:22,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2021-12-22 08:34:22,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:22,516 INFO L225 Difference]: With dead ends: 531 [2021-12-22 08:34:22,516 INFO L226 Difference]: Without dead ends: 494 [2021-12-22 08:34:22,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:22,517 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 67 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:22,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 1162 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:22,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-12-22 08:34:22,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 494. [2021-12-22 08:34:22,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 423 states have (on average 1.2222222222222223) internal successors, (517), 429 states have internal predecessors, (517), 36 states have call successors, (36), 28 states have call predecessors, (36), 34 states have return successors, (43), 36 states have call predecessors, (43), 32 states have call successors, (43) [2021-12-22 08:34:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 596 transitions. [2021-12-22 08:34:22,567 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 596 transitions. Word has length 58 [2021-12-22 08:34:22,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:22,568 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 596 transitions. [2021-12-22 08:34:22,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:22,568 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 596 transitions. [2021-12-22 08:34:22,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-22 08:34:22,569 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:22,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:22,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-12-22 08:34:22,569 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:22,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:22,569 INFO L85 PathProgramCache]: Analyzing trace with hash 472047151, now seen corresponding path program 1 times [2021-12-22 08:34:22,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:22,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564848783] [2021-12-22 08:34:22,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:22,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 08:34:22,580 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 08:34:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 08:34:22,619 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 08:34:22,620 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 08:34:22,620 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 08:34:22,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-12-22 08:34:22,623 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:22,625 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 08:34:22,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 08:34:22 BoogieIcfgContainer [2021-12-22 08:34:22,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 08:34:22,710 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 08:34:22,710 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 08:34:22,711 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 08:34:22,711 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:33:50" (3/4) ... [2021-12-22 08:34:22,712 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-22 08:34:22,784 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 08:34:22,784 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 08:34:22,784 INFO L158 Benchmark]: Toolchain (without parser) took 33608.29ms. Allocated memory was 86.0MB in the beginning and 308.3MB in the end (delta: 222.3MB). Free memory was 62.2MB in the beginning and 206.1MB in the end (delta: -143.9MB). Peak memory consumption was 78.3MB. Max. memory is 16.1GB. [2021-12-22 08:34:22,784 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 71.3MB. Free memory was 43.0MB in the beginning and 42.9MB in the end (delta: 75.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 08:34:22,785 INFO L158 Benchmark]: CACSL2BoogieTranslator took 400.10ms. Allocated memory is still 86.0MB. Free memory was 62.0MB in the beginning and 51.6MB in the end (delta: 10.4MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2021-12-22 08:34:22,785 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.51ms. Allocated memory is still 86.0MB. Free memory was 51.6MB in the beginning and 44.7MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-22 08:34:22,785 INFO L158 Benchmark]: Boogie Preprocessor took 72.87ms. Allocated memory is still 86.0MB. Free memory was 44.7MB in the beginning and 40.0MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 08:34:22,785 INFO L158 Benchmark]: RCFGBuilder took 995.00ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 40.0MB in the beginning and 70.3MB in the end (delta: -30.4MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2021-12-22 08:34:22,785 INFO L158 Benchmark]: TraceAbstraction took 31981.00ms. Allocated memory was 113.2MB in the beginning and 308.3MB in the end (delta: 195.0MB). Free memory was 69.6MB in the beginning and 218.7MB in the end (delta: -149.1MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2021-12-22 08:34:22,785 INFO L158 Benchmark]: Witness Printer took 73.75ms. Allocated memory is still 308.3MB. Free memory was 218.7MB in the beginning and 206.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-22 08:34:22,791 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 71.3MB. Free memory was 43.0MB in the beginning and 42.9MB in the end (delta: 75.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 400.10ms. Allocated memory is still 86.0MB. Free memory was 62.0MB in the beginning and 51.6MB in the end (delta: 10.4MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.51ms. Allocated memory is still 86.0MB. Free memory was 51.6MB in the beginning and 44.7MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.87ms. Allocated memory is still 86.0MB. Free memory was 44.7MB in the beginning and 40.0MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 995.00ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 40.0MB in the beginning and 70.3MB in the end (delta: -30.4MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. * TraceAbstraction took 31981.00ms. Allocated memory was 113.2MB in the beginning and 308.3MB in the end (delta: 195.0MB). Free memory was 69.6MB in the beginning and 218.7MB in the end (delta: -149.1MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. * Witness Printer took 73.75ms. Allocated memory is still 308.3MB. Free memory was 218.7MB in the beginning and 206.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 59]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L32] int s ; [L33] int UNLOADED ; [L34] int NP ; [L35] int DC ; [L36] int SKIP1 ; [L37] int SKIP2 ; [L38] int MPR1 ; [L39] int MPR3 ; [L40] int IPC ; [L41] int pended ; [L42] int compFptr ; [L43] int compRegistered ; [L44] int lowerDriverReturn ; [L45] int setEventCalled ; [L46] int customIrp ; [L47] int routine ; [L48] int myStatus ; [L49] int pirp ; [L50] int Executive ; [L51] int Suspended ; [L52] int KernelMode ; [L53] int DeviceUsageTypePaging ; VAL [compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=0, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=0, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=0, UNLOADED=0] [L1718] int pirp__IoStatus__Status ; [L1719] int d = __VERIFIER_nondet_int() ; [L1720] int status = __VERIFIER_nondet_int() ; [L1721] int irp = __VERIFIER_nondet_int() ; [L1722] int we_should_unload = __VERIFIER_nondet_int() ; [L1723] int irp_choice = __VERIFIER_nondet_int() ; [L1724] int devobj = __VERIFIER_nondet_int() ; [L1725] int __cil_tmp9 ; [L1730] s = 0 [L1731] UNLOADED = 0 [L1732] NP = 0 [L1733] DC = 0 [L1734] SKIP1 = 0 [L1735] SKIP2 = 0 [L1736] MPR1 = 0 [L1737] MPR3 = 0 [L1738] IPC = 0 [L1739] pended = 0 [L1740] compFptr = 0 [L1741] compRegistered = 0 [L1742] lowerDriverReturn = 0 [L1743] setEventCalled = 0 [L1744] customIrp = 0 [L1745] routine = 0 [L1746] myStatus = 0 [L1747] pirp = 0 [L1748] Executive = 0 [L1749] Suspended = 5 [L1750] KernelMode = 0 [L1751] DeviceUsageTypePaging = 1 [L1754] pirp = irp [L1755] CALL _BLAST_init() [L67] UNLOADED = 0 [L68] NP = 1 [L69] DC = 2 [L70] SKIP1 = 3 [L71] SKIP2 = 4 [L72] MPR1 = 5 [L73] MPR3 = 6 [L74] IPC = 7 [L75] s = UNLOADED [L76] pended = 0 [L77] compFptr = 0 [L78] compRegistered = 0 [L79] lowerDriverReturn = 0 [L80] setEventCalled = 0 [L81] customIrp = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1755] RET _BLAST_init() [L1757] COND TRUE status >= 0 [L1758] s = NP [L1759] customIrp = 0 [L1760] setEventCalled = customIrp [L1761] lowerDriverReturn = setEventCalled [L1762] compRegistered = lowerDriverReturn [L1763] compFptr = compRegistered [L1764] pended = compFptr [L1765] pirp__IoStatus__Status = 0 [L1766] myStatus = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1767] COND TRUE irp_choice == 0 [L1768] pirp__IoStatus__Status = -1073741637 [L1769] myStatus = -1073741637 VAL [compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1772] CALL stub_driver_init() [L1707] s = NP [L1708] customIrp = 0 [L1709] setEventCalled = customIrp [L1710] lowerDriverReturn = setEventCalled [L1711] compRegistered = lowerDriverReturn [L1712] compFptr = compRegistered [L1713] pended = compFptr VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1772] RET stub_driver_init() [L1775] COND FALSE !(status < 0) [L1779] int tmp_ndt_1; [L1780] tmp_ndt_1 = __VERIFIER_nondet_int() [L1781] COND TRUE tmp_ndt_1 == 2 VAL [compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1798] CALL, EXPR CdAudioDeviceControl(devobj, pirp) [L313] int deviceExtension__Active = __VERIFIER_nondet_int() ; [L314] int status ; VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L317] COND FALSE !(deviceExtension__Active == 2) VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L320] COND FALSE !(deviceExtension__Active == 3) VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L323] COND FALSE !(deviceExtension__Active == 1) VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L326] COND TRUE deviceExtension__Active == 7 VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] CALL, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L1591] int currentIrpStack__Parameters__DeviceIoControl__IoControlCode = __VERIFIER_nondet_int() ; [L1592] int deviceExtension__TargetDeviceObject = __VERIFIER_nondet_int() ; [L1593] int irpSp__Control ; [L1594] int tmp ; [L1595] int tmp___0 ; [L1596] int __cil_tmp8 ; [L1597] int __cil_tmp9 ; [L1598] int __cil_tmp10 ; [L1599] int __cil_tmp11 ; [L1600] int __cil_tmp12 ; [L1604] __cil_tmp8 = 56 [L1605] __cil_tmp9 = 16384 [L1606] __cil_tmp10 = 131072 [L1607] __cil_tmp11 = 147456 [L1608] __cil_tmp12 = 147512 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1609] COND TRUE currentIrpStack__Parameters__DeviceIoControl__IoControlCode == __cil_tmp12 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1610] COND FALSE !(s != NP) VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1615] COND FALSE !(compRegistered != 0) [L1620] compRegistered = 1 [L1621] routine = 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1625] irpSp__Control = 224 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] CALL, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1900] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1901] int returnVal2 ; [L1902] int compRetStatus ; [L1903] int lcontext = __VERIFIER_nondet_int() ; [L1904] unsigned long __cil_tmp8 ; VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1907] COND TRUE \read(compRegistered) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1908] COND TRUE routine == 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] CALL, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(Context)=-1, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1569] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1570] int Irp__AssociatedIrp__SystemBuffer = __VERIFIER_nondet_int() ; [L1573] COND TRUE \read(Irp__PendingReturned) VAL [\old(Context)=-1, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=-1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1574] COND TRUE pended == 0 [L1575] pended = 1 VAL [\old(Context)=-1, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=-1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1582] COND FALSE !(myStatus >= 0) VAL [\old(Context)=-1, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=-1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1587] return (myStatus); VAL [\old(Context)=-1, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \result=-1073741637, compFptr=0, compRegistered=1, Context=-1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] RET, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, HPCdrCompletion(DeviceObject, Irp, lcontext)=-1073741637, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] compRetStatus = HPCdrCompletion(DeviceObject, Irp, lcontext) [L1920] __cil_tmp8 = (unsigned long )compRetStatus VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1921] COND FALSE !(__cil_tmp8 == -1073741802) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1928] COND FALSE !(\read(Irp__PendingReturned)) [L1931] int tmp_ndt_4; [L1932] tmp_ndt_4 = __VERIFIER_nondet_int() [L1933] COND TRUE tmp_ndt_4 == 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1944] returnVal2 = 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, returnVal2=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1958] COND TRUE s == NP [L1959] s = IPC [L1960] lowerDriverReturn = returnVal2 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1981] return (returnVal2); VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \result=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1626] RET, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IofCallDriver(deviceExtension__TargetDeviceObject, Irp)=0, IPC=7, Irp=0, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] tmp = IofCallDriver(deviceExtension__TargetDeviceObject, Irp) [L1628] return (tmp); VAL [\old(DeviceObject)=0, \old(Irp)=0, \result=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp=0, UNLOADED=0] [L348] RET, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L348] status = CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L363] return (status); VAL [\old(DeviceObject)=0, \old(Irp)=0, \result=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0] [L1798] RET, EXPR CdAudioDeviceControl(devobj, pirp) [L1798] status = CdAudioDeviceControl(devobj, pirp) [L1819] COND FALSE !(\read(we_should_unload)) VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1825] COND TRUE pended == 1 VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1826] COND FALSE !(s == NP) VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1833] COND TRUE pended == 1 VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1834] COND FALSE !(s == MPR3) VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1841] COND TRUE s != UNLOADED VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1842] COND TRUE status != -1 VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1843] COND TRUE s != SKIP2 VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1844] COND FALSE !(s != IPC) VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1857] COND FALSE !(pended != 1) VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1869] COND TRUE status != 259 VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1871] CALL errorFn() VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L59] reach_error() VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 470 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 31.8s, OverallIterations: 68, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 24.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21641 SdHoareTripleChecker+Valid, 18.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21315 mSDsluCounter, 164618 SdHoareTripleChecker+Invalid, 15.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 129420 mSDsCounter, 5713 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37680 IncrementalHoareTripleChecker+Invalid, 43393 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5713 mSolverCounterUnsat, 35198 mSDtfsCounter, 37680 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1098 GetRequests, 424 SyntacticMatches, 10 SemanticMatches, 664 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=821occurred in iteration=4, InterpolantAutomatonStates: 598, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 67 MinimizatonAttempts, 2265 StatesRemovedByMinimization, 46 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 3221 NumberOfCodeBlocks, 3221 NumberOfCodeBlocksAsserted, 69 NumberOfCheckSat, 3158 ConstructedInterpolants, 0 QuantifiedInterpolants, 8979 SizeOfPredicates, 4 NumberOfNonLiveVariables, 471 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 69 InterpolantComputations, 67 PerfectInterpolantSequences, 12/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-22 08:34:22,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE