./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bfc29f03d3be9b41eb07ac14f0f7eac45bf3a60a4a6601e3132f720b72534d53 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 06:07:20,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 06:07:20,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 06:07:20,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 06:07:20,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 06:07:20,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 06:07:20,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 06:07:20,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 06:07:20,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 06:07:20,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 06:07:20,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 06:07:20,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 06:07:20,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 06:07:20,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 06:07:20,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 06:07:20,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 06:07:20,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 06:07:20,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 06:07:20,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 06:07:20,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 06:07:20,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 06:07:20,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 06:07:20,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 06:07:20,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 06:07:20,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 06:07:20,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 06:07:20,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 06:07:20,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 06:07:20,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 06:07:20,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 06:07:20,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 06:07:20,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 06:07:20,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 06:07:20,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 06:07:20,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 06:07:20,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 06:07:20,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 06:07:20,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 06:07:20,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 06:07:20,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 06:07:20,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 06:07:20,972 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-16 06:07:21,001 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 06:07:21,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 06:07:21,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 06:07:21,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 06:07:21,002 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 06:07:21,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 06:07:21,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 06:07:21,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 06:07:21,003 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 06:07:21,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 06:07:21,004 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 06:07:21,004 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 06:07:21,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 06:07:21,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 06:07:21,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 06:07:21,005 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 06:07:21,005 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 06:07:21,005 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 06:07:21,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 06:07:21,005 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 06:07:21,005 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 06:07:21,006 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 06:07:21,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 06:07:21,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 06:07:21,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 06:07:21,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:07:21,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 06:07:21,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 06:07:21,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 06:07:21,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 06:07:21,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 06:07:21,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc29f03d3be9b41eb07ac14f0f7eac45bf3a60a4a6601e3132f720b72534d53 [2021-12-16 06:07:21,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 06:07:21,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 06:07:21,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 06:07:21,207 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 06:07:21,207 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 06:07:21,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2021-12-16 06:07:21,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f6126453/1d7cfca7a3804c278dae1cf20b74953d/FLAGde37a8788 [2021-12-16 06:07:21,678 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 06:07:21,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2021-12-16 06:07:21,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f6126453/1d7cfca7a3804c278dae1cf20b74953d/FLAGde37a8788 [2021-12-16 06:07:22,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f6126453/1d7cfca7a3804c278dae1cf20b74953d [2021-12-16 06:07:22,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 06:07:22,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 06:07:22,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 06:07:22,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 06:07:22,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 06:07:22,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:07:22" (1/1) ... [2021-12-16 06:07:22,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a2021c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:22, skipping insertion in model container [2021-12-16 06:07:22,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:07:22" (1/1) ... [2021-12-16 06:07:22,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 06:07:22,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 06:07:22,240 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] [2021-12-16 06:07:22,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:07:22,368 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 06:07:22,378 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] [2021-12-16 06:07:22,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:07:22,484 INFO L208 MainTranslator]: Completed translation [2021-12-16 06:07:22,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:22 WrapperNode [2021-12-16 06:07:22,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 06:07:22,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 06:07:22,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 06:07:22,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 06:07:22,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:22" (1/1) ... [2021-12-16 06:07:22,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:22" (1/1) ... [2021-12-16 06:07:22,562 INFO L137 Inliner]: procedures = 41, calls = 108, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 1583 [2021-12-16 06:07:22,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 06:07:22,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 06:07:22,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 06:07:22,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 06:07:22,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:22" (1/1) ... [2021-12-16 06:07:22,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:22" (1/1) ... [2021-12-16 06:07:22,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:22" (1/1) ... [2021-12-16 06:07:22,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:22" (1/1) ... [2021-12-16 06:07:22,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:22" (1/1) ... [2021-12-16 06:07:22,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:22" (1/1) ... [2021-12-16 06:07:22,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:22" (1/1) ... [2021-12-16 06:07:22,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 06:07:22,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 06:07:22,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 06:07:22,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 06:07:22,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:22" (1/1) ... [2021-12-16 06:07:22,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:07:22,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 06:07:22,678 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) [2021-12-16 06:07:22,699 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 [2021-12-16 06:07:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2021-12-16 06:07:22,726 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2021-12-16 06:07:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 06:07:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2021-12-16 06:07:22,726 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2021-12-16 06:07:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-12-16 06:07:22,726 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-12-16 06:07:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2021-12-16 06:07:22,727 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2021-12-16 06:07:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-16 06:07:22,727 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-16 06:07:22,728 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-16 06:07:22,728 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-16 06:07:22,728 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2021-12-16 06:07:22,728 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2021-12-16 06:07:22,728 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-12-16 06:07:22,729 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-12-16 06:07:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2021-12-16 06:07:22,729 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2021-12-16 06:07:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-16 06:07:22,729 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-16 06:07:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 06:07:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-16 06:07:22,730 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-16 06:07:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2021-12-16 06:07:22,730 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2021-12-16 06:07:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 06:07:22,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 06:07:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2021-12-16 06:07:22,731 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2021-12-16 06:07:22,966 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 06:07:22,967 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 06:07:23,072 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:23,112 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-12-16 06:07:23,113 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-12-16 06:07:23,155 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:23,165 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-16 06:07:23,165 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-16 06:07:23,170 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:23,170 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:23,173 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:23,181 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:23,191 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:23,194 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:23,204 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:23,756 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: CdAudioPnp_#res#1 := 0; [2021-12-16 06:07:23,757 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##258: assume !false; [2021-12-16 06:07:23,757 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##257: assume false; [2021-12-16 06:07:23,757 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##286: assume !false; [2021-12-16 06:07:23,757 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##285: assume false; [2021-12-16 06:07:23,757 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !false; [2021-12-16 06:07:23,758 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume false; [2021-12-16 06:07:23,758 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##133: assume false; [2021-12-16 06:07:23,758 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##134: assume !false; [2021-12-16 06:07:23,758 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2021-12-16 06:07:23,758 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2021-12-16 06:07:23,758 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-12-16 06:07:23,759 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-12-16 06:07:23,759 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##331: assume false; [2021-12-16 06:07:23,759 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##332: assume !false; [2021-12-16 06:07:23,801 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 06:07:23,816 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 06:07:23,818 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 06:07:23,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:23 BoogieIcfgContainer [2021-12-16 06:07:23,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 06:07:23,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 06:07:23,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 06:07:23,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 06:07:23,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:07:22" (1/3) ... [2021-12-16 06:07:23,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c8a893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:07:23, skipping insertion in model container [2021-12-16 06:07:23,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:22" (2/3) ... [2021-12-16 06:07:23,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c8a893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:07:23, skipping insertion in model container [2021-12-16 06:07:23,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:23" (3/3) ... [2021-12-16 06:07:23,828 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.c [2021-12-16 06:07:23,832 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 06:07:23,833 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 06:07:23,873 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 06:07:23,880 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-12-16 06:07:23,880 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 06:07:23,904 INFO L276 IsEmpty]: Start isEmpty. Operand has 471 states, 368 states have (on average 1.5108695652173914) internal successors, (556), 388 states have internal predecessors, (556), 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) [2021-12-16 06:07:23,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 06:07:23,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:23,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:23,916 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:23,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:23,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2107937846, now seen corresponding path program 1 times [2021-12-16 06:07:23,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:23,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286536612] [2021-12-16 06:07:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:23,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:24,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:24,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286536612] [2021-12-16 06:07:24,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286536612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:24,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:24,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:24,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496892939] [2021-12-16 06:07:24,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:24,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:24,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:24,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:24,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:24,128 INFO L87 Difference]: Start difference. First operand has 471 states, 368 states have (on average 1.5108695652173914) internal successors, (556), 388 states have internal predecessors, (556), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:24,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:24,230 INFO L93 Difference]: Finished difference Result 623 states and 925 transitions. [2021-12-16 06:07:24,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:24,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-16 06:07:24,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:24,248 INFO L225 Difference]: With dead ends: 623 [2021-12-16 06:07:24,248 INFO L226 Difference]: Without dead ends: 619 [2021-12-16 06:07:24,250 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 [2021-12-16 06:07:24,254 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 690 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 952 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 [2021-12-16 06:07:24,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 952 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:24,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-12-16 06:07:24,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 603. [2021-12-16 06:07:24,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 486 states have (on average 1.4732510288065843) internal successors, (716), 494 states have internal predecessors, (716), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-12-16 06:07:24,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 904 transitions. [2021-12-16 06:07:24,357 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 904 transitions. Word has length 8 [2021-12-16 06:07:24,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:24,359 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 904 transitions. [2021-12-16 06:07:24,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:24,361 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 904 transitions. [2021-12-16 06:07:24,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 06:07:24,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:24,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:24,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 06:07:24,363 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:24,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:24,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1313128955, now seen corresponding path program 1 times [2021-12-16 06:07:24,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:24,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047339588] [2021-12-16 06:07:24,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:24,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:24,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:24,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:24,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047339588] [2021-12-16 06:07:24,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047339588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:24,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:24,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:24,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403593339] [2021-12-16 06:07:24,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:24,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:24,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:24,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:24,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:24,422 INFO L87 Difference]: Start difference. First operand 603 states and 904 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:24,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:24,446 INFO L93 Difference]: Finished difference Result 606 states and 905 transitions. [2021-12-16 06:07:24,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:24,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-16 06:07:24,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:24,449 INFO L225 Difference]: With dead ends: 606 [2021-12-16 06:07:24,449 INFO L226 Difference]: Without dead ends: 606 [2021-12-16 06:07:24,449 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 [2021-12-16 06:07:24,450 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 385 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:24,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 946 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-12-16 06:07:24,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 603. [2021-12-16 06:07:24,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 486 states have (on average 1.47119341563786) internal successors, (715), 494 states have internal predecessors, (715), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-12-16 06:07:24,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 903 transitions. [2021-12-16 06:07:24,463 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 903 transitions. Word has length 9 [2021-12-16 06:07:24,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:24,464 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 903 transitions. [2021-12-16 06:07:24,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:24,464 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 903 transitions. [2021-12-16 06:07:24,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 06:07:24,464 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:24,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:24,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 06:07:24,465 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:24,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:24,465 INFO L85 PathProgramCache]: Analyzing trace with hash 929457737, now seen corresponding path program 1 times [2021-12-16 06:07:24,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:24,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841671337] [2021-12-16 06:07:24,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:24,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:24,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:24,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:24,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841671337] [2021-12-16 06:07:24,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841671337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:24,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:24,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 06:07:24,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340499739] [2021-12-16 06:07:24,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:24,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:24,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:24,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:24,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:24,492 INFO L87 Difference]: Start difference. First operand 603 states and 903 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:24,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:24,567 INFO L93 Difference]: Finished difference Result 602 states and 902 transitions. [2021-12-16 06:07:24,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:24,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-16 06:07:24,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:24,569 INFO L225 Difference]: With dead ends: 602 [2021-12-16 06:07:24,570 INFO L226 Difference]: Without dead ends: 599 [2021-12-16 06:07:24,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:24,571 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 418 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:24,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 850 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:24,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-12-16 06:07:24,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-12-16 06:07:24,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 483 states have (on average 1.453416149068323) internal successors, (702), 490 states have internal predecessors, (702), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-12-16 06:07:24,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 890 transitions. [2021-12-16 06:07:24,583 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 890 transitions. Word has length 9 [2021-12-16 06:07:24,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:24,583 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 890 transitions. [2021-12-16 06:07:24,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:24,584 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 890 transitions. [2021-12-16 06:07:24,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 06:07:24,584 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:24,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:24,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 06:07:24,585 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:24,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:24,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1469618489, now seen corresponding path program 1 times [2021-12-16 06:07:24,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:24,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65896369] [2021-12-16 06:07:24,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:24,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:24,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:24,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65896369] [2021-12-16 06:07:24,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65896369] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:24,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:24,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:24,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165787615] [2021-12-16 06:07:24,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:24,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:24,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:24,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:24,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:24,609 INFO L87 Difference]: Start difference. First operand 599 states and 890 transitions. 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) [2021-12-16 06:07:24,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:24,656 INFO L93 Difference]: Finished difference Result 602 states and 892 transitions. [2021-12-16 06:07:24,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:24,657 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 [2021-12-16 06:07:24,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:24,660 INFO L225 Difference]: With dead ends: 602 [2021-12-16 06:07:24,660 INFO L226 Difference]: Without dead ends: 599 [2021-12-16 06:07:24,660 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 [2021-12-16 06:07:24,661 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 0 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:24,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1335 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:24,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-12-16 06:07:24,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-12-16 06:07:24,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 483 states have (on average 1.4513457556935818) internal successors, (701), 490 states have internal predecessors, (701), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-12-16 06:07:24,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 889 transitions. [2021-12-16 06:07:24,707 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 889 transitions. Word has length 13 [2021-12-16 06:07:24,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:24,708 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 889 transitions. [2021-12-16 06:07:24,708 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) [2021-12-16 06:07:24,708 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 889 transitions. [2021-12-16 06:07:24,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-16 06:07:24,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:24,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:24,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 06:07:24,709 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:24,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:24,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1712839809, now seen corresponding path program 1 times [2021-12-16 06:07:24,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:24,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176980622] [2021-12-16 06:07:24,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:24,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:24,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:24,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:24,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176980622] [2021-12-16 06:07:24,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176980622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:24,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:24,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:24,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313687255] [2021-12-16 06:07:24,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:24,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:24,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:24,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:24,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:24,736 INFO L87 Difference]: Start difference. First operand 599 states and 889 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) [2021-12-16 06:07:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:24,875 INFO L93 Difference]: Finished difference Result 851 states and 1244 transitions. [2021-12-16 06:07:24,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:24,875 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 [2021-12-16 06:07:24,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:24,881 INFO L225 Difference]: With dead ends: 851 [2021-12-16 06:07:24,882 INFO L226 Difference]: Without dead ends: 850 [2021-12-16 06:07:24,882 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 [2021-12-16 06:07:24,884 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 567 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1037 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 [2021-12-16 06:07:24,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 1037 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:24,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2021-12-16 06:07:24,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 799. [2021-12-16 06:07:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 656 states have (on average 1.4222560975609757) internal successors, (933), 649 states have internal predecessors, (933), 107 states have call successors, (107), 31 states have call predecessors, (107), 35 states have return successors, (136), 122 states have call predecessors, (136), 96 states have call successors, (136) [2021-12-16 06:07:24,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1176 transitions. [2021-12-16 06:07:24,914 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1176 transitions. Word has length 15 [2021-12-16 06:07:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:24,915 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1176 transitions. [2021-12-16 06:07:24,915 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) [2021-12-16 06:07:24,915 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1176 transitions. [2021-12-16 06:07:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 06:07:24,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:24,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:24,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 06:07:24,917 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:24,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:24,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1930286977, now seen corresponding path program 1 times [2021-12-16 06:07:24,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:24,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345396782] [2021-12-16 06:07:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:24,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:24,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:24,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:24,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345396782] [2021-12-16 06:07:24,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345396782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:24,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:24,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:24,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824692752] [2021-12-16 06:07:24,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:24,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:24,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:24,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:24,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:24,978 INFO L87 Difference]: Start difference. First operand 799 states and 1176 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) [2021-12-16 06:07:24,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:24,996 INFO L93 Difference]: Finished difference Result 875 states and 1272 transitions. [2021-12-16 06:07:24,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:24,997 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 [2021-12-16 06:07:24,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:25,001 INFO L225 Difference]: With dead ends: 875 [2021-12-16 06:07:25,002 INFO L226 Difference]: Without dead ends: 875 [2021-12-16 06:07:25,002 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 [2021-12-16 06:07:25,004 INFO L933 BasicCegarLoop]: 682 mSDtfsCounter, 601 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 870 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 [2021-12-16 06:07:25,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 870 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:25,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-12-16 06:07:25,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 847. [2021-12-16 06:07:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 699 states have (on average 1.4406294706723892) internal successors, (1007), 703 states have internal predecessors, (1007), 106 states have call successors, (106), 35 states have call predecessors, (106), 41 states have return successors, (127), 108 states have call predecessors, (127), 98 states have call successors, (127) [2021-12-16 06:07:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1240 transitions. [2021-12-16 06:07:25,039 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1240 transitions. Word has length 19 [2021-12-16 06:07:25,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:25,039 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 1240 transitions. [2021-12-16 06:07:25,040 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) [2021-12-16 06:07:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1240 transitions. [2021-12-16 06:07:25,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-16 06:07:25,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:25,041 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] [2021-12-16 06:07:25,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 06:07:25,042 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:25,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:25,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1396316142, now seen corresponding path program 1 times [2021-12-16 06:07:25,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:25,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942346274] [2021-12-16 06:07:25,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:25,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:25,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:25,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942346274] [2021-12-16 06:07:25,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942346274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:25,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:25,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:25,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422340722] [2021-12-16 06:07:25,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:25,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:25,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:25,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:25,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:25,067 INFO L87 Difference]: Start difference. First operand 847 states and 1240 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) [2021-12-16 06:07:25,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:25,185 INFO L93 Difference]: Finished difference Result 1342 states and 2023 transitions. [2021-12-16 06:07:25,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:25,186 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 [2021-12-16 06:07:25,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:25,196 INFO L225 Difference]: With dead ends: 1342 [2021-12-16 06:07:25,199 INFO L226 Difference]: Without dead ends: 1342 [2021-12-16 06:07:25,199 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 [2021-12-16 06:07:25,200 INFO L933 BasicCegarLoop]: 1008 mSDtfsCounter, 339 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1625 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 [2021-12-16 06:07:25,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 1625 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:25,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2021-12-16 06:07:25,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1035. [2021-12-16 06:07:25,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 855 states have (on average 1.4385964912280702) internal successors, (1230), 857 states have internal predecessors, (1230), 123 states have call successors, (123), 47 states have call predecessors, (123), 56 states have return successors, (205), 130 states have call predecessors, (205), 115 states have call successors, (205) [2021-12-16 06:07:25,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1558 transitions. [2021-12-16 06:07:25,251 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1558 transitions. Word has length 21 [2021-12-16 06:07:25,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:25,252 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 1558 transitions. [2021-12-16 06:07:25,252 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) [2021-12-16 06:07:25,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1558 transitions. [2021-12-16 06:07:25,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-16 06:07:25,255 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:25,255 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] [2021-12-16 06:07:25,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 06:07:25,255 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:25,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:25,256 INFO L85 PathProgramCache]: Analyzing trace with hash -574680278, now seen corresponding path program 1 times [2021-12-16 06:07:25,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:25,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911072419] [2021-12-16 06:07:25,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:25,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:25,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:25,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911072419] [2021-12-16 06:07:25,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911072419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:25,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:25,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:25,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858509375] [2021-12-16 06:07:25,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:25,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:25,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:25,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:25,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:25,339 INFO L87 Difference]: Start difference. First operand 1035 states and 1558 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) [2021-12-16 06:07:25,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:25,659 INFO L93 Difference]: Finished difference Result 1076 states and 1603 transitions. [2021-12-16 06:07:25,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:07:25,660 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 [2021-12-16 06:07:25,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:25,663 INFO L225 Difference]: With dead ends: 1076 [2021-12-16 06:07:25,664 INFO L226 Difference]: Without dead ends: 1076 [2021-12-16 06:07:25,664 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 [2021-12-16 06:07:25,665 INFO L933 BasicCegarLoop]: 721 mSDtfsCounter, 1030 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:25,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 875 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:25,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2021-12-16 06:07:25,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1017. [2021-12-16 06:07:25,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 840 states have (on average 1.4321428571428572) internal successors, (1203), 842 states have internal predecessors, (1203), 120 states have call successors, (120), 44 states have call predecessors, (120), 56 states have return successors, (199), 130 states have call predecessors, (199), 112 states have call successors, (199) [2021-12-16 06:07:25,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1522 transitions. [2021-12-16 06:07:25,690 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1522 transitions. Word has length 22 [2021-12-16 06:07:25,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:25,690 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 1522 transitions. [2021-12-16 06:07:25,690 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) [2021-12-16 06:07:25,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1522 transitions. [2021-12-16 06:07:25,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-16 06:07:25,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:25,693 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] [2021-12-16 06:07:25,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 06:07:25,693 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:25,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:25,694 INFO L85 PathProgramCache]: Analyzing trace with hash -401986427, now seen corresponding path program 1 times [2021-12-16 06:07:25,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:25,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755064698] [2021-12-16 06:07:25,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:25,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:25,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:25,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755064698] [2021-12-16 06:07:25,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755064698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:25,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:25,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:25,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102407148] [2021-12-16 06:07:25,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:25,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:25,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:25,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:25,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:25,716 INFO L87 Difference]: Start difference. First operand 1017 states and 1522 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) [2021-12-16 06:07:25,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:25,770 INFO L93 Difference]: Finished difference Result 1016 states and 1519 transitions. [2021-12-16 06:07:25,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:25,770 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 [2021-12-16 06:07:25,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:25,773 INFO L225 Difference]: With dead ends: 1016 [2021-12-16 06:07:25,774 INFO L226 Difference]: Without dead ends: 1016 [2021-12-16 06:07:25,774 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 [2021-12-16 06:07:25,775 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 22 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1254 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 [2021-12-16 06:07:25,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1254 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:25,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-12-16 06:07:25,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1016. [2021-12-16 06:07:25,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 840 states have (on average 1.4297619047619048) internal successors, (1201), 841 states have internal predecessors, (1201), 119 states have call successors, (119), 44 states have call predecessors, (119), 56 states have return successors, (199), 130 states have call predecessors, (199), 112 states have call successors, (199) [2021-12-16 06:07:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1519 transitions. [2021-12-16 06:07:25,800 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1519 transitions. Word has length 23 [2021-12-16 06:07:25,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:25,800 INFO L470 AbstractCegarLoop]: Abstraction has 1016 states and 1519 transitions. [2021-12-16 06:07:25,800 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) [2021-12-16 06:07:25,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1519 transitions. [2021-12-16 06:07:25,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-16 06:07:25,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:25,802 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] [2021-12-16 06:07:25,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 06:07:25,803 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:25,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:25,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1030908419, now seen corresponding path program 1 times [2021-12-16 06:07:25,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:25,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168010739] [2021-12-16 06:07:25,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:25,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:25,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 06:07:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:25,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:25,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:25,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168010739] [2021-12-16 06:07:25,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168010739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:25,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:25,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:25,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358951192] [2021-12-16 06:07:25,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:25,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:25,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:25,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:25,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:25,833 INFO L87 Difference]: Start difference. First operand 1016 states and 1519 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) [2021-12-16 06:07:26,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:26,066 INFO L93 Difference]: Finished difference Result 1313 states and 1942 transitions. [2021-12-16 06:07:26,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:07:26,067 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 [2021-12-16 06:07:26,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:26,078 INFO L225 Difference]: With dead ends: 1313 [2021-12-16 06:07:26,078 INFO L226 Difference]: Without dead ends: 1313 [2021-12-16 06:07:26,079 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 [2021-12-16 06:07:26,079 INFO L933 BasicCegarLoop]: 728 mSDtfsCounter, 771 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:26,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 1397 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:26,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2021-12-16 06:07:26,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1073. [2021-12-16 06:07:26,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 888 states have (on average 1.4144144144144144) internal successors, (1256), 894 states have internal predecessors, (1256), 116 states have call successors, (116), 49 states have call predecessors, (116), 68 states have return successors, (178), 129 states have call predecessors, (178), 109 states have call successors, (178) [2021-12-16 06:07:26,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1550 transitions. [2021-12-16 06:07:26,112 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1550 transitions. Word has length 36 [2021-12-16 06:07:26,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:26,113 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 1550 transitions. [2021-12-16 06:07:26,113 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) [2021-12-16 06:07:26,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1550 transitions. [2021-12-16 06:07:26,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 06:07:26,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:26,117 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] [2021-12-16 06:07:26,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 06:07:26,118 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:26,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:26,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1380818810, now seen corresponding path program 1 times [2021-12-16 06:07:26,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:26,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680921841] [2021-12-16 06:07:26,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:26,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:26,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 06:07:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:26,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:26,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680921841] [2021-12-16 06:07:26,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680921841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:26,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:26,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:26,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442442240] [2021-12-16 06:07:26,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:26,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:26,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:26,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:26,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:26,161 INFO L87 Difference]: Start difference. First operand 1073 states and 1550 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) [2021-12-16 06:07:26,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:26,355 INFO L93 Difference]: Finished difference Result 844 states and 1225 transitions. [2021-12-16 06:07:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:07:26,356 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 [2021-12-16 06:07:26,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:26,359 INFO L225 Difference]: With dead ends: 844 [2021-12-16 06:07:26,359 INFO L226 Difference]: Without dead ends: 844 [2021-12-16 06:07:26,360 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 [2021-12-16 06:07:26,360 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 248 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:26,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 1771 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:26,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2021-12-16 06:07:26,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 805. [2021-12-16 06:07:26,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 666 states have (on average 1.4159159159159158) internal successors, (943), 674 states have internal predecessors, (943), 94 states have call successors, (94), 33 states have call predecessors, (94), 44 states have return successors, (121), 97 states have call predecessors, (121), 87 states have call successors, (121) [2021-12-16 06:07:26,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1158 transitions. [2021-12-16 06:07:26,377 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1158 transitions. Word has length 35 [2021-12-16 06:07:26,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:26,377 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1158 transitions. [2021-12-16 06:07:26,377 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) [2021-12-16 06:07:26,377 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1158 transitions. [2021-12-16 06:07:26,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-16 06:07:26,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:26,379 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] [2021-12-16 06:07:26,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 06:07:26,379 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:26,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:26,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1008894010, now seen corresponding path program 1 times [2021-12-16 06:07:26,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:26,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715971066] [2021-12-16 06:07:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:26,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:26,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:26,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715971066] [2021-12-16 06:07:26,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715971066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:26,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:26,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:26,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633304728] [2021-12-16 06:07:26,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:26,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:26,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:26,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:26,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:26,407 INFO L87 Difference]: Start difference. First operand 805 states and 1158 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) [2021-12-16 06:07:26,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:26,595 INFO L93 Difference]: Finished difference Result 823 states and 1179 transitions. [2021-12-16 06:07:26,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:07:26,596 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 [2021-12-16 06:07:26,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:26,598 INFO L225 Difference]: With dead ends: 823 [2021-12-16 06:07:26,598 INFO L226 Difference]: Without dead ends: 823 [2021-12-16 06:07:26,599 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 [2021-12-16 06:07:26,599 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 695 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:26,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 1107 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:26,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-12-16 06:07:26,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 805. [2021-12-16 06:07:26,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 666 states have (on average 1.412912912912913) internal successors, (941), 674 states have internal predecessors, (941), 94 states have call successors, (94), 33 states have call predecessors, (94), 44 states have return successors, (121), 97 states have call predecessors, (121), 87 states have call successors, (121) [2021-12-16 06:07:26,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1156 transitions. [2021-12-16 06:07:26,615 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1156 transitions. Word has length 32 [2021-12-16 06:07:26,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:26,615 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1156 transitions. [2021-12-16 06:07:26,615 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) [2021-12-16 06:07:26,616 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1156 transitions. [2021-12-16 06:07:26,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-16 06:07:26,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:26,617 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] [2021-12-16 06:07:26,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 06:07:26,618 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:26,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:26,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1889417613, now seen corresponding path program 1 times [2021-12-16 06:07:26,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:26,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011374315] [2021-12-16 06:07:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:26,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:26,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:26,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:26,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011374315] [2021-12-16 06:07:26,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011374315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:26,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:26,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:26,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55189503] [2021-12-16 06:07:26,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:26,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:26,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:26,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:26,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:26,665 INFO L87 Difference]: Start difference. First operand 805 states and 1156 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:27,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:27,059 INFO L93 Difference]: Finished difference Result 714 states and 1034 transitions. [2021-12-16 06:07:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:27,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (4), 3 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 36 [2021-12-16 06:07:27,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:27,062 INFO L225 Difference]: With dead ends: 714 [2021-12-16 06:07:27,062 INFO L226 Difference]: Without dead ends: 714 [2021-12-16 06:07:27,063 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 [2021-12-16 06:07:27,063 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 846 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:27,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 1651 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 06:07:27,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-12-16 06:07:27,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 673. [2021-12-16 06:07:27,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 555 states have (on average 1.4108108108108108) internal successors, (783), 562 states have internal predecessors, (783), 86 states have call successors, (86), 26 states have call predecessors, (86), 31 states have return successors, (96), 84 states have call predecessors, (96), 79 states have call successors, (96) [2021-12-16 06:07:27,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 965 transitions. [2021-12-16 06:07:27,094 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 965 transitions. Word has length 36 [2021-12-16 06:07:27,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:27,095 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 965 transitions. [2021-12-16 06:07:27,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:27,095 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 965 transitions. [2021-12-16 06:07:27,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 06:07:27,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:27,096 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] [2021-12-16 06:07:27,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 06:07:27,097 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:27,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:27,097 INFO L85 PathProgramCache]: Analyzing trace with hash 138802049, now seen corresponding path program 1 times [2021-12-16 06:07:27,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:27,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524806233] [2021-12-16 06:07:27,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:27,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:27,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:27,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524806233] [2021-12-16 06:07:27,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524806233] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:27,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:27,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:27,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396896960] [2021-12-16 06:07:27,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:27,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:27,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:27,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:27,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:27,117 INFO L87 Difference]: Start difference. First operand 673 states and 965 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) [2021-12-16 06:07:27,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:27,158 INFO L93 Difference]: Finished difference Result 825 states and 1174 transitions. [2021-12-16 06:07:27,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:27,158 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 [2021-12-16 06:07:27,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:27,161 INFO L225 Difference]: With dead ends: 825 [2021-12-16 06:07:27,161 INFO L226 Difference]: Without dead ends: 825 [2021-12-16 06:07:27,161 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 [2021-12-16 06:07:27,162 INFO L933 BasicCegarLoop]: 774 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, 1390 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 [2021-12-16 06:07:27,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 1390 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:27,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2021-12-16 06:07:27,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 724. [2021-12-16 06:07:27,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 602 states have (on average 1.3853820598006645) internal successors, (834), 602 states have internal predecessors, (834), 86 states have call successors, (86), 26 states have call predecessors, (86), 35 states have return successors, (107), 95 states have call predecessors, (107), 79 states have call successors, (107) [2021-12-16 06:07:27,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1027 transitions. [2021-12-16 06:07:27,174 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1027 transitions. Word has length 34 [2021-12-16 06:07:27,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:27,174 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 1027 transitions. [2021-12-16 06:07:27,174 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) [2021-12-16 06:07:27,174 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1027 transitions. [2021-12-16 06:07:27,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 06:07:27,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:27,176 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] [2021-12-16 06:07:27,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 06:07:27,176 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:27,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:27,177 INFO L85 PathProgramCache]: Analyzing trace with hash -298326081, now seen corresponding path program 1 times [2021-12-16 06:07:27,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:27,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503938013] [2021-12-16 06:07:27,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:27,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:27,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:27,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503938013] [2021-12-16 06:07:27,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503938013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:27,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:27,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:27,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437654793] [2021-12-16 06:07:27,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:27,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:27,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:27,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:27,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:27,231 INFO L87 Difference]: Start difference. First operand 724 states and 1027 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) [2021-12-16 06:07:27,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:27,425 INFO L93 Difference]: Finished difference Result 705 states and 997 transitions. [2021-12-16 06:07:27,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:07:27,425 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 [2021-12-16 06:07:27,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:27,428 INFO L225 Difference]: With dead ends: 705 [2021-12-16 06:07:27,428 INFO L226 Difference]: Without dead ends: 705 [2021-12-16 06:07:27,429 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 [2021-12-16 06:07:27,431 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 673 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1104 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 [2021-12-16 06:07:27,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 1104 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:27,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-12-16 06:07:27,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 705. [2021-12-16 06:07:27,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 585 states have (on average 1.3897435897435897) internal successors, (813), 592 states have internal predecessors, (813), 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) [2021-12-16 06:07:27,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 997 transitions. [2021-12-16 06:07:27,442 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 997 transitions. Word has length 34 [2021-12-16 06:07:27,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:27,442 INFO L470 AbstractCegarLoop]: Abstraction has 705 states and 997 transitions. [2021-12-16 06:07:27,442 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) [2021-12-16 06:07:27,443 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 997 transitions. [2021-12-16 06:07:27,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 06:07:27,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:27,444 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] [2021-12-16 06:07:27,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 06:07:27,444 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:27,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:27,445 INFO L85 PathProgramCache]: Analyzing trace with hash 452395651, now seen corresponding path program 1 times [2021-12-16 06:07:27,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:27,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616770066] [2021-12-16 06:07:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:27,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:27,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:27,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616770066] [2021-12-16 06:07:27,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616770066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:27,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:27,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:27,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635029592] [2021-12-16 06:07:27,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:27,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:27,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:27,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:27,483 INFO L87 Difference]: Start difference. First operand 705 states and 997 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) [2021-12-16 06:07:27,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:27,699 INFO L93 Difference]: Finished difference Result 802 states and 1139 transitions. [2021-12-16 06:07:27,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:07:27,700 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 [2021-12-16 06:07:27,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:27,702 INFO L225 Difference]: With dead ends: 802 [2021-12-16 06:07:27,702 INFO L226 Difference]: Without dead ends: 802 [2021-12-16 06:07:27,703 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 [2021-12-16 06:07:27,703 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 749 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1197 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 [2021-12-16 06:07:27,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 1197 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:27,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2021-12-16 06:07:27,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 708. [2021-12-16 06:07:27,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 588 states have (on average 1.3894557823129252) internal successors, (817), 595 states have internal predecessors, (817), 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) [2021-12-16 06:07:27,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1001 transitions. [2021-12-16 06:07:27,715 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1001 transitions. Word has length 35 [2021-12-16 06:07:27,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:27,716 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 1001 transitions. [2021-12-16 06:07:27,716 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) [2021-12-16 06:07:27,716 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1001 transitions. [2021-12-16 06:07:27,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 06:07:27,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:27,727 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] [2021-12-16 06:07:27,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 06:07:27,728 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:27,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:27,728 INFO L85 PathProgramCache]: Analyzing trace with hash 452672481, now seen corresponding path program 1 times [2021-12-16 06:07:27,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:27,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438871282] [2021-12-16 06:07:27,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:27,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:27,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:27,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438871282] [2021-12-16 06:07:27,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438871282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:27,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:27,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:27,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298634390] [2021-12-16 06:07:27,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:27,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:27,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:27,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:27,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:27,757 INFO L87 Difference]: Start difference. First operand 708 states and 1001 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) [2021-12-16 06:07:27,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:27,801 INFO L93 Difference]: Finished difference Result 718 states and 1011 transitions. [2021-12-16 06:07:27,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:27,802 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 [2021-12-16 06:07:27,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:27,804 INFO L225 Difference]: With dead ends: 718 [2021-12-16 06:07:27,804 INFO L226 Difference]: Without dead ends: 691 [2021-12-16 06:07:27,804 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 [2021-12-16 06:07:27,805 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 [2021-12-16 06:07:27,805 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] [2021-12-16 06:07:27,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2021-12-16 06:07:27,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2021-12-16 06:07:27,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 571 states have (on average 1.3957968476357268) internal successors, (797), 578 states have internal predecessors, (797), 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) [2021-12-16 06:07:27,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 981 transitions. [2021-12-16 06:07:27,815 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 981 transitions. Word has length 35 [2021-12-16 06:07:27,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:27,816 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 981 transitions. [2021-12-16 06:07:27,816 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) [2021-12-16 06:07:27,816 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 981 transitions. [2021-12-16 06:07:27,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-16 06:07:27,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:27,817 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] [2021-12-16 06:07:27,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 06:07:27,818 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:27,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:27,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2080196380, now seen corresponding path program 1 times [2021-12-16 06:07:27,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:27,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695136616] [2021-12-16 06:07:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:27,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:27,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:27,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:27,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695136616] [2021-12-16 06:07:27,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695136616] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:27,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:27,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:27,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969048735] [2021-12-16 06:07:27,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:27,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:27,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:27,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:27,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:27,844 INFO L87 Difference]: Start difference. First operand 691 states and 981 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) [2021-12-16 06:07:28,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:28,023 INFO L93 Difference]: Finished difference Result 727 states and 1043 transitions. [2021-12-16 06:07:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:07:28,024 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 [2021-12-16 06:07:28,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:28,026 INFO L225 Difference]: With dead ends: 727 [2021-12-16 06:07:28,027 INFO L226 Difference]: Without dead ends: 725 [2021-12-16 06:07:28,027 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 [2021-12-16 06:07:28,027 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, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:28,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 1553 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:28,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-12-16 06:07:28,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 705. [2021-12-16 06:07:28,038 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) [2021-12-16 06:07:28,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 998 transitions. [2021-12-16 06:07:28,039 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 998 transitions. Word has length 37 [2021-12-16 06:07:28,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:28,039 INFO L470 AbstractCegarLoop]: Abstraction has 705 states and 998 transitions. [2021-12-16 06:07:28,040 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) [2021-12-16 06:07:28,040 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 998 transitions. [2021-12-16 06:07:28,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-16 06:07:28,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:28,041 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] [2021-12-16 06:07:28,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 06:07:28,042 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:28,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:28,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2122568447, now seen corresponding path program 1 times [2021-12-16 06:07:28,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:28,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968471703] [2021-12-16 06:07:28,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:28,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:28,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:28,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:28,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968471703] [2021-12-16 06:07:28,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968471703] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:28,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:28,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:28,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963828688] [2021-12-16 06:07:28,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:28,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:28,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:28,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:28,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:28,116 INFO L87 Difference]: Start difference. First operand 705 states and 998 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) [2021-12-16 06:07:28,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:28,404 INFO L93 Difference]: Finished difference Result 725 states and 1040 transitions. [2021-12-16 06:07:28,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:28,404 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 [2021-12-16 06:07:28,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:28,406 INFO L225 Difference]: With dead ends: 725 [2021-12-16 06:07:28,407 INFO L226 Difference]: Without dead ends: 725 [2021-12-16 06:07:28,407 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 [2021-12-16 06:07:28,407 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 787 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:28,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 1463 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:28,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-12-16 06:07:28,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 705. [2021-12-16 06:07:28,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 585 states have (on average 1.3897435897435897) internal successors, (813), 592 states have internal predecessors, (813), 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) [2021-12-16 06:07:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 997 transitions. [2021-12-16 06:07:28,435 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 997 transitions. Word has length 39 [2021-12-16 06:07:28,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:28,436 INFO L470 AbstractCegarLoop]: Abstraction has 705 states and 997 transitions. [2021-12-16 06:07:28,436 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) [2021-12-16 06:07:28,436 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 997 transitions. [2021-12-16 06:07:28,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-16 06:07:28,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:28,438 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] [2021-12-16 06:07:28,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 06:07:28,438 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:28,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:28,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1062055151, now seen corresponding path program 1 times [2021-12-16 06:07:28,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:28,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288700054] [2021-12-16 06:07:28,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:28,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:28,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:28,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:28,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288700054] [2021-12-16 06:07:28,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288700054] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:28,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:28,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 06:07:28,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017638383] [2021-12-16 06:07:28,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:28,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:07:28,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:28,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:07:28,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:28,496 INFO L87 Difference]: Start difference. First operand 705 states and 997 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) [2021-12-16 06:07:28,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:28,828 INFO L93 Difference]: Finished difference Result 741 states and 1059 transitions. [2021-12-16 06:07:28,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:28,829 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 [2021-12-16 06:07:28,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:28,831 INFO L225 Difference]: With dead ends: 741 [2021-12-16 06:07:28,832 INFO L226 Difference]: Without dead ends: 712 [2021-12-16 06:07:28,832 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 [2021-12-16 06:07:28,832 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, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:28,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 3987 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:28,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-12-16 06:07:28,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 696. [2021-12-16 06:07:28,860 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) [2021-12-16 06:07:28,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 973 transitions. [2021-12-16 06:07:28,862 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 973 transitions. Word has length 40 [2021-12-16 06:07:28,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:28,862 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 973 transitions. [2021-12-16 06:07:28,863 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) [2021-12-16 06:07:28,863 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 973 transitions. [2021-12-16 06:07:28,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-16 06:07:28,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:28,865 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] [2021-12-16 06:07:28,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 06:07:28,865 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:28,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:28,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1438594100, now seen corresponding path program 1 times [2021-12-16 06:07:28,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:28,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132009273] [2021-12-16 06:07:28,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:28,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:28,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 06:07:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:28,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 06:07:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:28,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:28,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132009273] [2021-12-16 06:07:28,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132009273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:28,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:28,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:28,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028072831] [2021-12-16 06:07:28,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:28,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:28,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:28,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:28,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:28,901 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) [2021-12-16 06:07:29,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:29,241 INFO L93 Difference]: Finished difference Result 688 states and 980 transitions. [2021-12-16 06:07:29,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:29,241 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 [2021-12-16 06:07:29,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:29,244 INFO L225 Difference]: With dead ends: 688 [2021-12-16 06:07:29,244 INFO L226 Difference]: Without dead ends: 688 [2021-12-16 06:07:29,244 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 [2021-12-16 06:07:29,245 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 252 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2021-12-16 06:07:29,245 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] [2021-12-16 06:07:29,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-12-16 06:07:29,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 672. [2021-12-16 06:07:29,258 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) [2021-12-16 06:07:29,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 940 transitions. [2021-12-16 06:07:29,260 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 940 transitions. Word has length 43 [2021-12-16 06:07:29,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:29,260 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 940 transitions. [2021-12-16 06:07:29,260 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) [2021-12-16 06:07:29,261 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 940 transitions. [2021-12-16 06:07:29,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-16 06:07:29,262 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:29,262 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] [2021-12-16 06:07:29,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 06:07:29,263 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:29,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:29,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1007838826, now seen corresponding path program 1 times [2021-12-16 06:07:29,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:29,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221131250] [2021-12-16 06:07:29,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:29,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:29,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 06:07:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:29,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:29,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:29,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221131250] [2021-12-16 06:07:29,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221131250] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:29,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:29,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 06:07:29,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950739794] [2021-12-16 06:07:29,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:29,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 06:07:29,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:29,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 06:07:29,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:07:29,389 INFO L87 Difference]: Start difference. First operand 672 states and 940 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) [2021-12-16 06:07:30,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:30,082 INFO L93 Difference]: Finished difference Result 699 states and 991 transitions. [2021-12-16 06:07:30,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:07:30,083 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 [2021-12-16 06:07:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:30,085 INFO L225 Difference]: With dead ends: 699 [2021-12-16 06:07:30,085 INFO L226 Difference]: Without dead ends: 686 [2021-12-16 06:07:30,085 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 [2021-12-16 06:07:30,086 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 98 mSDsluCounter, 3850 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:30,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 4461 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 06:07:30,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-12-16 06:07:30,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 670. [2021-12-16 06:07:30,096 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) [2021-12-16 06:07:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 936 transitions. [2021-12-16 06:07:30,098 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 936 transitions. Word has length 44 [2021-12-16 06:07:30,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:30,098 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 936 transitions. [2021-12-16 06:07:30,098 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) [2021-12-16 06:07:30,098 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 936 transitions. [2021-12-16 06:07:30,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-16 06:07:30,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:30,100 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] [2021-12-16 06:07:30,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 06:07:30,101 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:30,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:30,101 INFO L85 PathProgramCache]: Analyzing trace with hash -938217641, now seen corresponding path program 1 times [2021-12-16 06:07:30,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:30,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140978366] [2021-12-16 06:07:30,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:30,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:30,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 06:07:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:30,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:30,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:30,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140978366] [2021-12-16 06:07:30,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140978366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:30,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:30,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 06:07:30,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326556176] [2021-12-16 06:07:30,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:30,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 06:07:30,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:30,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 06:07:30,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:07:30,216 INFO L87 Difference]: Start difference. First operand 670 states and 936 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) [2021-12-16 06:07:30,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:30,826 INFO L93 Difference]: Finished difference Result 696 states and 986 transitions. [2021-12-16 06:07:30,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:07:30,826 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 [2021-12-16 06:07:30,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:30,828 INFO L225 Difference]: With dead ends: 696 [2021-12-16 06:07:30,829 INFO L226 Difference]: Without dead ends: 683 [2021-12-16 06:07:30,829 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 [2021-12-16 06:07:30,829 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 98 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 4410 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:30,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 4410 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 06:07:30,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-12-16 06:07:30,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 667. [2021-12-16 06:07:30,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 554 states have (on average 1.3682310469314078) internal successors, (758), 560 states have internal predecessors, (758), 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) [2021-12-16 06:07:30,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 931 transitions. [2021-12-16 06:07:30,849 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 931 transitions. Word has length 43 [2021-12-16 06:07:30,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:30,849 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 931 transitions. [2021-12-16 06:07:30,849 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) [2021-12-16 06:07:30,849 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 931 transitions. [2021-12-16 06:07:30,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-16 06:07:30,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:30,851 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] [2021-12-16 06:07:30,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-16 06:07:30,851 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:30,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:30,852 INFO L85 PathProgramCache]: Analyzing trace with hash 590562129, now seen corresponding path program 1 times [2021-12-16 06:07:30,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:30,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631785154] [2021-12-16 06:07:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:30,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:30,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:30,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:30,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:30,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631785154] [2021-12-16 06:07:30,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631785154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:30,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:30,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-16 06:07:30,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261990307] [2021-12-16 06:07:30,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:30,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-16 06:07:30,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:30,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-16 06:07:30,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-16 06:07:30,955 INFO L87 Difference]: Start difference. First operand 667 states and 931 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) [2021-12-16 06:07:31,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:31,654 INFO L93 Difference]: Finished difference Result 716 states and 1006 transitions. [2021-12-16 06:07:31,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 06:07:31,655 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 [2021-12-16 06:07:31,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:31,657 INFO L225 Difference]: With dead ends: 716 [2021-12-16 06:07:31,657 INFO L226 Difference]: Without dead ends: 699 [2021-12-16 06:07:31,658 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 [2021-12-16 06:07:31,659 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 244 mSDsluCounter, 4914 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 5507 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:31,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 5507 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 06:07:31,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-12-16 06:07:31,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 665. [2021-12-16 06:07:31,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 553 states have (on average 1.3670886075949367) internal successors, (756), 559 states have internal predecessors, (756), 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) [2021-12-16 06:07:31,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 927 transitions. [2021-12-16 06:07:31,673 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 927 transitions. Word has length 47 [2021-12-16 06:07:31,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:31,674 INFO L470 AbstractCegarLoop]: Abstraction has 665 states and 927 transitions. [2021-12-16 06:07:31,674 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) [2021-12-16 06:07:31,674 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 927 transitions. [2021-12-16 06:07:31,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-16 06:07:31,676 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:31,676 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] [2021-12-16 06:07:31,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-16 06:07:31,676 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:31,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:31,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1771938136, now seen corresponding path program 1 times [2021-12-16 06:07:31,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:31,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285501716] [2021-12-16 06:07:31,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:31,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:31,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 06:07:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:31,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:31,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:31,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:31,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285501716] [2021-12-16 06:07:31,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285501716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:31,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:31,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-16 06:07:31,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394841202] [2021-12-16 06:07:31,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:31,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-16 06:07:31,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:31,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-16 06:07:31,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-16 06:07:31,778 INFO L87 Difference]: Start difference. First operand 665 states and 927 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) [2021-12-16 06:07:32,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:32,451 INFO L93 Difference]: Finished difference Result 714 states and 1002 transitions. [2021-12-16 06:07:32,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 06:07:32,452 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 [2021-12-16 06:07:32,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:32,455 INFO L225 Difference]: With dead ends: 714 [2021-12-16 06:07:32,455 INFO L226 Difference]: Without dead ends: 696 [2021-12-16 06:07:32,455 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 [2021-12-16 06:07:32,456 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 171 mSDsluCounter, 4741 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 5318 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:32,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 5318 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 06:07:32,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-12-16 06:07:32,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 664. [2021-12-16 06:07:32,481 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) [2021-12-16 06:07:32,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 916 transitions. [2021-12-16 06:07:32,482 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 916 transitions. Word has length 44 [2021-12-16 06:07:32,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:32,483 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 916 transitions. [2021-12-16 06:07:32,483 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) [2021-12-16 06:07:32,484 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 916 transitions. [2021-12-16 06:07:32,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-16 06:07:32,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:32,485 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] [2021-12-16 06:07:32,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-16 06:07:32,486 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:32,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:32,486 INFO L85 PathProgramCache]: Analyzing trace with hash 345167796, now seen corresponding path program 1 times [2021-12-16 06:07:32,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:32,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82126227] [2021-12-16 06:07:32,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:32,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:32,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 06:07:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:32,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:32,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82126227] [2021-12-16 06:07:32,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82126227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:32,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:32,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:32,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240141048] [2021-12-16 06:07:32,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:32,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:32,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:32,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:32,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:32,555 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) [2021-12-16 06:07:32,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:32,940 INFO L93 Difference]: Finished difference Result 724 states and 1007 transitions. [2021-12-16 06:07:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 06:07:32,940 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 [2021-12-16 06:07:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:32,942 INFO L225 Difference]: With dead ends: 724 [2021-12-16 06:07:32,942 INFO L226 Difference]: Without dead ends: 638 [2021-12-16 06:07:32,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-12-16 06:07:32,943 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 221 mSDsluCounter, 3069 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 3642 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:32,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 3642 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:32,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-12-16 06:07:32,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 619. [2021-12-16 06:07:32,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 517 states have (on average 1.323017408123791) internal successors, (684), 523 states have internal predecessors, (684), 70 states have call successors, (70), 26 states have call predecessors, (70), 31 states have return successors, (81), 69 states have call predecessors, (81), 64 states have call successors, (81) [2021-12-16 06:07:32,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 835 transitions. [2021-12-16 06:07:32,955 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 835 transitions. Word has length 44 [2021-12-16 06:07:32,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:32,955 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 835 transitions. [2021-12-16 06:07:32,955 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) [2021-12-16 06:07:32,956 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 835 transitions. [2021-12-16 06:07:32,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-16 06:07:32,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:32,957 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] [2021-12-16 06:07:32,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-16 06:07:32,957 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:32,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:32,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1307777067, now seen corresponding path program 1 times [2021-12-16 06:07:32,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:32,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172383049] [2021-12-16 06:07:32,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:32,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:32,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 06:07:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:32,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 06:07:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:32,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:32,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172383049] [2021-12-16 06:07:32,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172383049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:32,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:32,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:32,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425350992] [2021-12-16 06:07:32,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:32,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:32,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:32,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:32,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:32,995 INFO L87 Difference]: Start difference. First operand 619 states and 835 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) [2021-12-16 06:07:33,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:33,324 INFO L93 Difference]: Finished difference Result 670 states and 935 transitions. [2021-12-16 06:07:33,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:33,325 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 [2021-12-16 06:07:33,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:33,327 INFO L225 Difference]: With dead ends: 670 [2021-12-16 06:07:33,327 INFO L226 Difference]: Without dead ends: 670 [2021-12-16 06:07:33,328 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 [2021-12-16 06:07:33,328 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 134 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:33,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 1933 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:33,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-12-16 06:07:33,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 626. [2021-12-16 06:07:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 522 states have (on average 1.3237547892720307) internal successors, (691), 529 states have internal predecessors, (691), 71 states have call successors, (71), 26 states have call predecessors, (71), 32 states have return successors, (87), 70 states have call predecessors, (87), 65 states have call successors, (87) [2021-12-16 06:07:33,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 849 transitions. [2021-12-16 06:07:33,341 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 849 transitions. Word has length 45 [2021-12-16 06:07:33,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:33,341 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 849 transitions. [2021-12-16 06:07:33,341 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) [2021-12-16 06:07:33,341 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 849 transitions. [2021-12-16 06:07:33,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-16 06:07:33,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:33,343 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] [2021-12-16 06:07:33,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-16 06:07:33,343 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:33,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:33,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1817250157, now seen corresponding path program 1 times [2021-12-16 06:07:33,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:33,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153591222] [2021-12-16 06:07:33,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:33,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:33,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 06:07:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:33,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 06:07:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:33,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:33,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153591222] [2021-12-16 06:07:33,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153591222] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:33,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:33,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:33,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885079819] [2021-12-16 06:07:33,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:33,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:33,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:33,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:33,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:33,396 INFO L87 Difference]: Start difference. First operand 626 states and 849 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) [2021-12-16 06:07:33,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:33,723 INFO L93 Difference]: Finished difference Result 661 states and 911 transitions. [2021-12-16 06:07:33,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:07:33,723 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 [2021-12-16 06:07:33,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:33,726 INFO L225 Difference]: With dead ends: 661 [2021-12-16 06:07:33,726 INFO L226 Difference]: Without dead ends: 644 [2021-12-16 06:07:33,726 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 [2021-12-16 06:07:33,726 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 245 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:33,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 3038 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:33,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-12-16 06:07:33,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 624. [2021-12-16 06:07:33,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 521 states have (on average 1.3224568138195778) internal successors, (689), 528 states have internal predecessors, (689), 70 states have call successors, (70), 26 states have call predecessors, (70), 32 states have return successors, (86), 69 states have call predecessors, (86), 64 states have call successors, (86) [2021-12-16 06:07:33,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 845 transitions. [2021-12-16 06:07:33,738 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 845 transitions. Word has length 45 [2021-12-16 06:07:33,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:33,738 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 845 transitions. [2021-12-16 06:07:33,738 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) [2021-12-16 06:07:33,739 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 845 transitions. [2021-12-16 06:07:33,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-16 06:07:33,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:33,740 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] [2021-12-16 06:07:33,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-16 06:07:33,741 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:33,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:33,741 INFO L85 PathProgramCache]: Analyzing trace with hash 877591917, now seen corresponding path program 1 times [2021-12-16 06:07:33,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:33,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599169406] [2021-12-16 06:07:33,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:33,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:33,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 06:07:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:33,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:33,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:33,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599169406] [2021-12-16 06:07:33,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599169406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:33,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:33,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 06:07:33,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959296822] [2021-12-16 06:07:33,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:33,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 06:07:33,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:33,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 06:07:33,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:07:33,837 INFO L87 Difference]: Start difference. First operand 624 states and 845 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) [2021-12-16 06:07:34,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:34,402 INFO L93 Difference]: Finished difference Result 656 states and 904 transitions. [2021-12-16 06:07:34,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 06:07:34,402 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 [2021-12-16 06:07:34,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:34,404 INFO L225 Difference]: With dead ends: 656 [2021-12-16 06:07:34,404 INFO L226 Difference]: Without dead ends: 641 [2021-12-16 06:07:34,404 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 [2021-12-16 06:07:34,405 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 110 mSDsluCounter, 3373 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 3870 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:34,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 3870 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 06:07:34,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-12-16 06:07:34,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 621. [2021-12-16 06:07:34,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 519 states have (on average 1.3217726396917149) internal successors, (686), 526 states have internal predecessors, (686), 69 states have call successors, (69), 26 states have call predecessors, (69), 32 states have return successors, (85), 68 states have call predecessors, (85), 63 states have call successors, (85) [2021-12-16 06:07:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 840 transitions. [2021-12-16 06:07:34,419 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 840 transitions. Word has length 46 [2021-12-16 06:07:34,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:34,419 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 840 transitions. [2021-12-16 06:07:34,419 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) [2021-12-16 06:07:34,419 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 840 transitions. [2021-12-16 06:07:34,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-16 06:07:34,421 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:34,421 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] [2021-12-16 06:07:34,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-16 06:07:34,421 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:34,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:34,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1506824031, now seen corresponding path program 1 times [2021-12-16 06:07:34,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:34,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807627442] [2021-12-16 06:07:34,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:34,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:34,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 06:07:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:34,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 06:07:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:34,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:34,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807627442] [2021-12-16 06:07:34,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807627442] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:34,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:34,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:34,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105400120] [2021-12-16 06:07:34,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:34,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:34,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:34,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:34,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:34,459 INFO L87 Difference]: Start difference. First operand 621 states and 840 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) [2021-12-16 06:07:34,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:34,720 INFO L93 Difference]: Finished difference Result 653 states and 916 transitions. [2021-12-16 06:07:34,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:34,720 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 [2021-12-16 06:07:34,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:34,722 INFO L225 Difference]: With dead ends: 653 [2021-12-16 06:07:34,723 INFO L226 Difference]: Without dead ends: 651 [2021-12-16 06:07:34,723 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 [2021-12-16 06:07:34,723 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 102 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:34,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 2425 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:34,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-12-16 06:07:34,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 625. [2021-12-16 06:07:34,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 521 states have (on average 1.3205374280230326) internal successors, (688), 530 states have internal predecessors, (688), 69 states have call successors, (69), 26 states have call predecessors, (69), 34 states have return successors, (100), 68 states have call predecessors, (100), 63 states have call successors, (100) [2021-12-16 06:07:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 857 transitions. [2021-12-16 06:07:34,734 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 857 transitions. Word has length 46 [2021-12-16 06:07:34,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:34,735 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 857 transitions. [2021-12-16 06:07:34,735 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) [2021-12-16 06:07:34,735 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 857 transitions. [2021-12-16 06:07:34,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-16 06:07:34,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:34,737 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] [2021-12-16 06:07:34,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-16 06:07:34,737 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:34,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:34,738 INFO L85 PathProgramCache]: Analyzing trace with hash -201116362, now seen corresponding path program 1 times [2021-12-16 06:07:34,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:34,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133353471] [2021-12-16 06:07:34,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:34,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:34,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 06:07:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:34,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:34,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:34,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133353471] [2021-12-16 06:07:34,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133353471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:34,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:34,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 06:07:34,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299885073] [2021-12-16 06:07:34,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:34,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 06:07:34,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:34,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 06:07:34,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:07:34,816 INFO L87 Difference]: Start difference. First operand 625 states and 857 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) [2021-12-16 06:07:35,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:35,408 INFO L93 Difference]: Finished difference Result 657 states and 916 transitions. [2021-12-16 06:07:35,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 06:07:35,408 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 [2021-12-16 06:07:35,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:35,410 INFO L225 Difference]: With dead ends: 657 [2021-12-16 06:07:35,410 INFO L226 Difference]: Without dead ends: 642 [2021-12-16 06:07:35,411 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 [2021-12-16 06:07:35,411 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 123 mSDsluCounter, 3707 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 4198 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:35,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 4198 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 06:07:35,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-12-16 06:07:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 622. [2021-12-16 06:07:35,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 519 states have (on average 1.3198458574181118) internal successors, (685), 528 states have internal predecessors, (685), 68 states have call successors, (68), 26 states have call predecessors, (68), 34 states have return successors, (99), 67 states have call predecessors, (99), 62 states have call successors, (99) [2021-12-16 06:07:35,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 852 transitions. [2021-12-16 06:07:35,425 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 852 transitions. Word has length 47 [2021-12-16 06:07:35,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:35,425 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 852 transitions. [2021-12-16 06:07:35,426 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) [2021-12-16 06:07:35,426 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 852 transitions. [2021-12-16 06:07:35,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-16 06:07:35,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:35,427 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] [2021-12-16 06:07:35,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-16 06:07:35,427 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:35,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:35,428 INFO L85 PathProgramCache]: Analyzing trace with hash -109408180, now seen corresponding path program 1 times [2021-12-16 06:07:35,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:35,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201986741] [2021-12-16 06:07:35,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:35,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:35,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:35,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 06:07:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:35,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 06:07:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:35,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:35,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:35,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201986741] [2021-12-16 06:07:35,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201986741] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:35,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:35,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:35,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189846642] [2021-12-16 06:07:35,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:35,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:35,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:35,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:35,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:35,500 INFO L87 Difference]: Start difference. First operand 622 states and 852 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 06:07:35,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:35,800 INFO L93 Difference]: Finished difference Result 733 states and 1010 transitions. [2021-12-16 06:07:35,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:35,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2021-12-16 06:07:35,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:35,803 INFO L225 Difference]: With dead ends: 733 [2021-12-16 06:07:35,804 INFO L226 Difference]: Without dead ends: 733 [2021-12-16 06:07:35,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:35,806 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 315 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:35,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 1235 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2021-12-16 06:07:35,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 686. [2021-12-16 06:07:35,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 573 states have (on average 1.3193717277486912) internal successors, (756), 582 states have internal predecessors, (756), 71 states have call successors, (71), 30 states have call predecessors, (71), 41 states have return successors, (108), 73 states have call predecessors, (108), 66 states have call successors, (108) [2021-12-16 06:07:35,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 935 transitions. [2021-12-16 06:07:35,821 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 935 transitions. Word has length 50 [2021-12-16 06:07:35,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:35,822 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 935 transitions. [2021-12-16 06:07:35,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 06:07:35,822 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 935 transitions. [2021-12-16 06:07:35,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-16 06:07:35,824 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:35,824 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] [2021-12-16 06:07:35,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-16 06:07:35,824 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:35,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:35,825 INFO L85 PathProgramCache]: Analyzing trace with hash -642740247, now seen corresponding path program 1 times [2021-12-16 06:07:35,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:35,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304104264] [2021-12-16 06:07:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:35,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:35,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 06:07:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:35,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 06:07:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:35,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:35,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:35,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304104264] [2021-12-16 06:07:35,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304104264] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:35,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:35,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-16 06:07:35,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446725579] [2021-12-16 06:07:35,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:35,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 06:07:35,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:35,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 06:07:35,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-16 06:07:35,943 INFO L87 Difference]: Start difference. First operand 686 states and 935 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) [2021-12-16 06:07:36,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:36,695 INFO L93 Difference]: Finished difference Result 747 states and 1025 transitions. [2021-12-16 06:07:36,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 06:07:36,695 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 [2021-12-16 06:07:36,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:36,698 INFO L225 Difference]: With dead ends: 747 [2021-12-16 06:07:36,699 INFO L226 Difference]: Without dead ends: 730 [2021-12-16 06:07:36,699 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 [2021-12-16 06:07:36,699 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 248 mSDsluCounter, 4000 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 4478 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:36,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 4478 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 06:07:36,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2021-12-16 06:07:36,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 684. [2021-12-16 06:07:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 572 states have (on average 1.3181818181818181) internal successors, (754), 581 states have internal predecessors, (754), 70 states have call successors, (70), 30 states have call predecessors, (70), 41 states have return successors, (107), 72 states have call predecessors, (107), 65 states have call successors, (107) [2021-12-16 06:07:36,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 931 transitions. [2021-12-16 06:07:36,724 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 931 transitions. Word has length 51 [2021-12-16 06:07:36,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:36,725 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 931 transitions. [2021-12-16 06:07:36,725 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) [2021-12-16 06:07:36,725 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 931 transitions. [2021-12-16 06:07:36,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-16 06:07:36,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:36,727 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] [2021-12-16 06:07:36,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-16 06:07:36,727 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:36,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:36,728 INFO L85 PathProgramCache]: Analyzing trace with hash 484610396, now seen corresponding path program 1 times [2021-12-16 06:07:36,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:36,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262098021] [2021-12-16 06:07:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:36,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:36,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:36,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:36,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:36,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262098021] [2021-12-16 06:07:36,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262098021] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:36,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:36,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-16 06:07:36,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099090246] [2021-12-16 06:07:36,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:36,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-16 06:07:36,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:36,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-16 06:07:36,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-16 06:07:36,823 INFO L87 Difference]: Start difference. First operand 684 states and 931 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) [2021-12-16 06:07:37,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:37,430 INFO L93 Difference]: Finished difference Result 729 states and 1004 transitions. [2021-12-16 06:07:37,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 06:07:37,431 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 [2021-12-16 06:07:37,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:37,440 INFO L225 Difference]: With dead ends: 729 [2021-12-16 06:07:37,440 INFO L226 Difference]: Without dead ends: 712 [2021-12-16 06:07:37,441 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 [2021-12-16 06:07:37,441 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 149 mSDsluCounter, 3990 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 4452 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:37,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 4452 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 06:07:37,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-12-16 06:07:37,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 682. [2021-12-16 06:07:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 571 states have (on average 1.316987740805604) internal successors, (752), 580 states have internal predecessors, (752), 69 states have call successors, (69), 30 states have call predecessors, (69), 41 states have return successors, (106), 71 states have call predecessors, (106), 64 states have call successors, (106) [2021-12-16 06:07:37,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 927 transitions. [2021-12-16 06:07:37,456 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 927 transitions. Word has length 48 [2021-12-16 06:07:37,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:37,456 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 927 transitions. [2021-12-16 06:07:37,456 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) [2021-12-16 06:07:37,457 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 927 transitions. [2021-12-16 06:07:37,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-16 06:07:37,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:37,458 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] [2021-12-16 06:07:37,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-16 06:07:37,458 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:37,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:37,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2066330974, now seen corresponding path program 1 times [2021-12-16 06:07:37,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:37,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349048564] [2021-12-16 06:07:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:37,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:37,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 06:07:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 06:07:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:37,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:37,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349048564] [2021-12-16 06:07:37,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349048564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:37,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:37,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:37,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712250669] [2021-12-16 06:07:37,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:37,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:37,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:37,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:37,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:37,493 INFO L87 Difference]: Start difference. First operand 682 states and 927 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) [2021-12-16 06:07:37,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:37,676 INFO L93 Difference]: Finished difference Result 641 states and 852 transitions. [2021-12-16 06:07:37,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:07:37,677 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 [2021-12-16 06:07:37,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:37,678 INFO L225 Difference]: With dead ends: 641 [2021-12-16 06:07:37,678 INFO L226 Difference]: Without dead ends: 638 [2021-12-16 06:07:37,679 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 [2021-12-16 06:07:37,679 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 97 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:37,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 1446 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:37,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-12-16 06:07:37,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 609. [2021-12-16 06:07:37,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 514 states have (on average 1.311284046692607) internal successors, (674), 521 states have internal predecessors, (674), 60 states have call successors, (60), 27 states have call predecessors, (60), 34 states have return successors, (71), 60 states have call predecessors, (71), 55 states have call successors, (71) [2021-12-16 06:07:37,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 805 transitions. [2021-12-16 06:07:37,688 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 805 transitions. Word has length 48 [2021-12-16 06:07:37,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:37,688 INFO L470 AbstractCegarLoop]: Abstraction has 609 states and 805 transitions. [2021-12-16 06:07:37,688 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) [2021-12-16 06:07:37,688 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 805 transitions. [2021-12-16 06:07:37,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-16 06:07:37,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:37,690 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] [2021-12-16 06:07:37,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-16 06:07:37,690 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:37,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:37,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1741355878, now seen corresponding path program 1 times [2021-12-16 06:07:37,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:37,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354911164] [2021-12-16 06:07:37,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:37,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:37,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 06:07:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:37,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:37,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:37,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354911164] [2021-12-16 06:07:37,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354911164] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:37,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:37,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 06:07:37,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38023849] [2021-12-16 06:07:37,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:37,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 06:07:37,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:37,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 06:07:37,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:07:37,782 INFO L87 Difference]: Start difference. First operand 609 states and 805 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) [2021-12-16 06:07:38,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:38,307 INFO L93 Difference]: Finished difference Result 633 states and 836 transitions. [2021-12-16 06:07:38,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 06:07:38,308 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 [2021-12-16 06:07:38,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:38,309 INFO L225 Difference]: With dead ends: 633 [2021-12-16 06:07:38,309 INFO L226 Difference]: Without dead ends: 618 [2021-12-16 06:07:38,310 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 [2021-12-16 06:07:38,310 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 116 mSDsluCounter, 3474 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 3931 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:38,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 3931 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 06:07:38,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-12-16 06:07:38,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 606. [2021-12-16 06:07:38,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 512 states have (on average 1.310546875) internal successors, (671), 519 states have internal predecessors, (671), 59 states have call successors, (59), 27 states have call predecessors, (59), 34 states have return successors, (70), 59 states have call predecessors, (70), 54 states have call successors, (70) [2021-12-16 06:07:38,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 800 transitions. [2021-12-16 06:07:38,317 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 800 transitions. Word has length 48 [2021-12-16 06:07:38,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:38,317 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 800 transitions. [2021-12-16 06:07:38,317 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) [2021-12-16 06:07:38,317 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 800 transitions. [2021-12-16 06:07:38,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-16 06:07:38,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:38,318 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] [2021-12-16 06:07:38,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-16 06:07:38,318 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:38,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:38,318 INFO L85 PathProgramCache]: Analyzing trace with hash 574205435, now seen corresponding path program 1 times [2021-12-16 06:07:38,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:38,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270613438] [2021-12-16 06:07:38,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:38,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:38,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 06:07:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-16 06:07:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:38,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:38,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:38,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270613438] [2021-12-16 06:07:38,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270613438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:38,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:38,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:38,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643098653] [2021-12-16 06:07:38,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:38,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:38,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:38,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:38,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:38,371 INFO L87 Difference]: Start difference. First operand 606 states and 800 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) [2021-12-16 06:07:38,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:38,620 INFO L93 Difference]: Finished difference Result 679 states and 888 transitions. [2021-12-16 06:07:38,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:38,620 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 [2021-12-16 06:07:38,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:38,622 INFO L225 Difference]: With dead ends: 679 [2021-12-16 06:07:38,622 INFO L226 Difference]: Without dead ends: 679 [2021-12-16 06:07:38,622 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 [2021-12-16 06:07:38,622 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 324 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:38,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 1934 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:38,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2021-12-16 06:07:38,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 610. [2021-12-16 06:07:38,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 515 states have (on average 1.3106796116504855) internal successors, (675), 522 states have internal predecessors, (675), 60 states have call successors, (60), 27 states have call predecessors, (60), 34 states have return successors, (71), 60 states have call predecessors, (71), 55 states have call successors, (71) [2021-12-16 06:07:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 806 transitions. [2021-12-16 06:07:38,629 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 806 transitions. Word has length 50 [2021-12-16 06:07:38,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:38,630 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 806 transitions. [2021-12-16 06:07:38,630 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) [2021-12-16 06:07:38,630 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 806 transitions. [2021-12-16 06:07:38,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-16 06:07:38,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:38,631 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] [2021-12-16 06:07:38,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-16 06:07:38,633 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:38,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:38,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1910633636, now seen corresponding path program 1 times [2021-12-16 06:07:38,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:38,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652548021] [2021-12-16 06:07:38,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:38,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:38,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 06:07:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:38,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 06:07:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:38,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 06:07:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:38,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 06:07:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:38,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:38,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:38,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652548021] [2021-12-16 06:07:38,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652548021] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:38,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:38,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:38,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006528004] [2021-12-16 06:07:38,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:38,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:38,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:38,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:38,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:38,695 INFO L87 Difference]: Start difference. First operand 610 states and 806 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) [2021-12-16 06:07:38,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:38,956 INFO L93 Difference]: Finished difference Result 622 states and 823 transitions. [2021-12-16 06:07:38,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:38,956 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 [2021-12-16 06:07:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:38,969 INFO L225 Difference]: With dead ends: 622 [2021-12-16 06:07:38,970 INFO L226 Difference]: Without dead ends: 622 [2021-12-16 06:07:38,970 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 [2021-12-16 06:07:38,971 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 197 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:38,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 1354 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:38,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-12-16 06:07:38,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 610. [2021-12-16 06:07:38,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 515 states have (on average 1.3067961165048543) internal successors, (673), 522 states have internal predecessors, (673), 60 states have call successors, (60), 27 states have call predecessors, (60), 34 states have return successors, (71), 60 states have call predecessors, (71), 55 states have call successors, (71) [2021-12-16 06:07:38,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 804 transitions. [2021-12-16 06:07:38,979 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 804 transitions. Word has length 53 [2021-12-16 06:07:38,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:38,980 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 804 transitions. [2021-12-16 06:07:38,980 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) [2021-12-16 06:07:38,980 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 804 transitions. [2021-12-16 06:07:38,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-16 06:07:38,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:38,981 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] [2021-12-16 06:07:38,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-16 06:07:38,982 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:38,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:38,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1366311556, now seen corresponding path program 1 times [2021-12-16 06:07:38,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:38,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254655656] [2021-12-16 06:07:38,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:38,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:39,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 06:07:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:39,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 06:07:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:39,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:39,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:39,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254655656] [2021-12-16 06:07:39,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254655656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:39,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:39,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-16 06:07:39,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122539363] [2021-12-16 06:07:39,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:39,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 06:07:39,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:39,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 06:07:39,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-16 06:07:39,102 INFO L87 Difference]: Start difference. First operand 610 states and 804 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) [2021-12-16 06:07:39,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:39,716 INFO L93 Difference]: Finished difference Result 637 states and 838 transitions. [2021-12-16 06:07:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 06:07:39,717 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 [2021-12-16 06:07:39,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:39,719 INFO L225 Difference]: With dead ends: 637 [2021-12-16 06:07:39,719 INFO L226 Difference]: Without dead ends: 620 [2021-12-16 06:07:39,719 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 [2021-12-16 06:07:39,719 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 232 mSDsluCounter, 4109 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 4555 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:39,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 4555 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 06:07:39,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-12-16 06:07:39,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 608. [2021-12-16 06:07:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 514 states have (on average 1.3054474708171206) internal successors, (671), 521 states have internal predecessors, (671), 59 states have call successors, (59), 27 states have call predecessors, (59), 34 states have return successors, (70), 59 states have call predecessors, (70), 54 states have call successors, (70) [2021-12-16 06:07:39,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 800 transitions. [2021-12-16 06:07:39,726 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 800 transitions. Word has length 52 [2021-12-16 06:07:39,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:39,727 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 800 transitions. [2021-12-16 06:07:39,727 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) [2021-12-16 06:07:39,727 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 800 transitions. [2021-12-16 06:07:39,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-16 06:07:39,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:39,728 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] [2021-12-16 06:07:39,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-16 06:07:39,728 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:39,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:39,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1364251108, now seen corresponding path program 1 times [2021-12-16 06:07:39,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:39,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039609971] [2021-12-16 06:07:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:39,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:39,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:39,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 06:07:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:39,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:39,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:39,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039609971] [2021-12-16 06:07:39,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039609971] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:39,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:39,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:39,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493028330] [2021-12-16 06:07:39,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:39,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:39,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:39,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:39,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:39,769 INFO L87 Difference]: Start difference. First operand 608 states and 800 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) [2021-12-16 06:07:39,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:39,980 INFO L93 Difference]: Finished difference Result 614 states and 808 transitions. [2021-12-16 06:07:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:39,980 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 [2021-12-16 06:07:39,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:39,982 INFO L225 Difference]: With dead ends: 614 [2021-12-16 06:07:39,982 INFO L226 Difference]: Without dead ends: 614 [2021-12-16 06:07:39,983 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 [2021-12-16 06:07:39,983 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 175 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:39,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 1862 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:39,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-12-16 06:07:39,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 598. [2021-12-16 06:07:39,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 506 states have (on average 1.3023715415019763) internal successors, (659), 513 states have internal predecessors, (659), 57 states have call successors, (57), 27 states have call predecessors, (57), 34 states have return successors, (68), 57 states have call predecessors, (68), 52 states have call successors, (68) [2021-12-16 06:07:39,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 784 transitions. [2021-12-16 06:07:39,996 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 784 transitions. Word has length 51 [2021-12-16 06:07:39,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:39,996 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 784 transitions. [2021-12-16 06:07:39,996 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) [2021-12-16 06:07:39,996 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 784 transitions. [2021-12-16 06:07:39,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-16 06:07:39,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:39,998 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] [2021-12-16 06:07:39,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-16 06:07:39,999 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:39,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:39,999 INFO L85 PathProgramCache]: Analyzing trace with hash 445712646, now seen corresponding path program 1 times [2021-12-16 06:07:39,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:40,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816718385] [2021-12-16 06:07:40,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:40,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:40,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:40,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 06:07:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:40,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:40,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816718385] [2021-12-16 06:07:40,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816718385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:40,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:40,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:40,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159467463] [2021-12-16 06:07:40,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:40,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:40,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:40,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:40,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:40,057 INFO L87 Difference]: Start difference. First operand 598 states and 784 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) [2021-12-16 06:07:40,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:40,252 INFO L93 Difference]: Finished difference Result 610 states and 802 transitions. [2021-12-16 06:07:40,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:40,253 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 [2021-12-16 06:07:40,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:40,254 INFO L225 Difference]: With dead ends: 610 [2021-12-16 06:07:40,254 INFO L226 Difference]: Without dead ends: 605 [2021-12-16 06:07:40,255 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 [2021-12-16 06:07:40,255 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 171 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:40,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 1866 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:40,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-12-16 06:07:40,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 593. [2021-12-16 06:07:40,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 502 states have (on average 1.302788844621514) internal successors, (654), 509 states have internal predecessors, (654), 56 states have call successors, (56), 27 states have call predecessors, (56), 34 states have return successors, (67), 56 states have call predecessors, (67), 51 states have call successors, (67) [2021-12-16 06:07:40,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 777 transitions. [2021-12-16 06:07:40,264 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 777 transitions. Word has length 52 [2021-12-16 06:07:40,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:40,264 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 777 transitions. [2021-12-16 06:07:40,264 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) [2021-12-16 06:07:40,265 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 777 transitions. [2021-12-16 06:07:40,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-16 06:07:40,267 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:40,267 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] [2021-12-16 06:07:40,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-16 06:07:40,268 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:40,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:40,268 INFO L85 PathProgramCache]: Analyzing trace with hash 432060647, now seen corresponding path program 1 times [2021-12-16 06:07:40,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:40,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80709832] [2021-12-16 06:07:40,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:40,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:40,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:40,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:40,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:40,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80709832] [2021-12-16 06:07:40,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80709832] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:40,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:40,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:40,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073792937] [2021-12-16 06:07:40,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:40,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:40,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:40,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:40,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:40,313 INFO L87 Difference]: Start difference. First operand 593 states and 777 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) [2021-12-16 06:07:40,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:40,593 INFO L93 Difference]: Finished difference Result 709 states and 930 transitions. [2021-12-16 06:07:40,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:40,593 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 [2021-12-16 06:07:40,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:40,595 INFO L225 Difference]: With dead ends: 709 [2021-12-16 06:07:40,595 INFO L226 Difference]: Without dead ends: 709 [2021-12-16 06:07:40,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:40,595 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 218 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:40,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 1389 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:40,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2021-12-16 06:07:40,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 625. [2021-12-16 06:07:40,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 532 states have (on average 1.2969924812030076) internal successors, (690), 539 states have internal predecessors, (690), 56 states have call successors, (56), 27 states have call predecessors, (56), 36 states have return successors, (69), 58 states have call predecessors, (69), 51 states have call successors, (69) [2021-12-16 06:07:40,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 815 transitions. [2021-12-16 06:07:40,603 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 815 transitions. Word has length 52 [2021-12-16 06:07:40,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:40,603 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 815 transitions. [2021-12-16 06:07:40,603 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) [2021-12-16 06:07:40,603 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 815 transitions. [2021-12-16 06:07:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-16 06:07:40,604 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:40,604 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] [2021-12-16 06:07:40,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-16 06:07:40,605 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:40,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:40,605 INFO L85 PathProgramCache]: Analyzing trace with hash 953754427, now seen corresponding path program 1 times [2021-12-16 06:07:40,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:40,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967374378] [2021-12-16 06:07:40,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:40,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:40,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:40,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:40,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:40,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967374378] [2021-12-16 06:07:40,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967374378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:40,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:40,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:40,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271120069] [2021-12-16 06:07:40,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:40,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:40,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:40,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:40,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:40,652 INFO L87 Difference]: Start difference. First operand 625 states and 815 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) [2021-12-16 06:07:41,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:41,114 INFO L93 Difference]: Finished difference Result 706 states and 924 transitions. [2021-12-16 06:07:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:07:41,114 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 [2021-12-16 06:07:41,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:41,116 INFO L225 Difference]: With dead ends: 706 [2021-12-16 06:07:41,116 INFO L226 Difference]: Without dead ends: 706 [2021-12-16 06:07:41,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:07:41,116 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 797 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:41,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [836 Valid, 1327 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 06:07:41,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-12-16 06:07:41,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 625. [2021-12-16 06:07:41,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 532 states have (on average 1.2932330827067668) internal successors, (688), 539 states have internal predecessors, (688), 56 states have call successors, (56), 27 states have call predecessors, (56), 36 states have return successors, (69), 58 states have call predecessors, (69), 51 states have call successors, (69) [2021-12-16 06:07:41,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 813 transitions. [2021-12-16 06:07:41,128 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 813 transitions. Word has length 53 [2021-12-16 06:07:41,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:41,129 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 813 transitions. [2021-12-16 06:07:41,129 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) [2021-12-16 06:07:41,129 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 813 transitions. [2021-12-16 06:07:41,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-16 06:07:41,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:41,130 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] [2021-12-16 06:07:41,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-16 06:07:41,130 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:41,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:41,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1335081080, now seen corresponding path program 1 times [2021-12-16 06:07:41,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:41,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414960761] [2021-12-16 06:07:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:41,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:41,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 06:07:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:41,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 06:07:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:41,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 06:07:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:41,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:41,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:41,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414960761] [2021-12-16 06:07:41,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414960761] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:41,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:41,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-16 06:07:41,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413044841] [2021-12-16 06:07:41,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:41,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 06:07:41,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:41,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 06:07:41,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-16 06:07:41,254 INFO L87 Difference]: Start difference. First operand 625 states and 813 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) [2021-12-16 06:07:41,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:41,954 INFO L93 Difference]: Finished difference Result 677 states and 878 transitions. [2021-12-16 06:07:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 06:07:41,954 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 [2021-12-16 06:07:41,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:41,956 INFO L225 Difference]: With dead ends: 677 [2021-12-16 06:07:41,956 INFO L226 Difference]: Without dead ends: 660 [2021-12-16 06:07:41,956 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 [2021-12-16 06:07:41,956 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 275 mSDsluCounter, 3801 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 4238 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:41,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 4238 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 06:07:41,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-12-16 06:07:41,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 623. [2021-12-16 06:07:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 531 states have (on average 1.2919020715630884) internal successors, (686), 538 states have internal predecessors, (686), 55 states have call successors, (55), 27 states have call predecessors, (55), 36 states have return successors, (68), 57 states have call predecessors, (68), 50 states have call successors, (68) [2021-12-16 06:07:41,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 809 transitions. [2021-12-16 06:07:41,962 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 809 transitions. Word has length 59 [2021-12-16 06:07:41,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:41,963 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 809 transitions. [2021-12-16 06:07:41,963 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) [2021-12-16 06:07:41,963 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 809 transitions. [2021-12-16 06:07:41,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-16 06:07:41,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:41,964 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] [2021-12-16 06:07:41,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-16 06:07:41,964 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:41,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:41,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1347488490, now seen corresponding path program 1 times [2021-12-16 06:07:41,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:41,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088438868] [2021-12-16 06:07:41,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:41,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:42,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:42,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 06:07:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:42,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:42,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:42,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088438868] [2021-12-16 06:07:42,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088438868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:42,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:42,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-16 06:07:42,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108751832] [2021-12-16 06:07:42,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:42,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-16 06:07:42,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:42,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-16 06:07:42,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-12-16 06:07:42,115 INFO L87 Difference]: Start difference. First operand 623 states and 809 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) [2021-12-16 06:07:42,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:42,756 INFO L93 Difference]: Finished difference Result 652 states and 846 transitions. [2021-12-16 06:07:42,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-16 06:07:42,757 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 [2021-12-16 06:07:42,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:42,758 INFO L225 Difference]: With dead ends: 652 [2021-12-16 06:07:42,758 INFO L226 Difference]: Without dead ends: 632 [2021-12-16 06:07:42,758 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 [2021-12-16 06:07:42,758 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 325 mSDsluCounter, 4102 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 4528 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:42,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 4528 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 06:07:42,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-12-16 06:07:42,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 620. [2021-12-16 06:07:42,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 529 states have (on average 1.2911153119092627) internal successors, (683), 536 states have internal predecessors, (683), 54 states have call successors, (54), 27 states have call predecessors, (54), 36 states have return successors, (67), 56 states have call predecessors, (67), 49 states have call successors, (67) [2021-12-16 06:07:42,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 804 transitions. [2021-12-16 06:07:42,765 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 804 transitions. Word has length 55 [2021-12-16 06:07:42,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:42,765 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 804 transitions. [2021-12-16 06:07:42,765 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) [2021-12-16 06:07:42,765 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 804 transitions. [2021-12-16 06:07:42,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-16 06:07:42,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:42,766 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] [2021-12-16 06:07:42,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-16 06:07:42,767 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:42,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:42,767 INFO L85 PathProgramCache]: Analyzing trace with hash -495181895, now seen corresponding path program 1 times [2021-12-16 06:07:42,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:42,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775833219] [2021-12-16 06:07:42,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:42,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:42,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 06:07:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:42,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:42,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:42,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775833219] [2021-12-16 06:07:42,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775833219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:42,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:42,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 06:07:42,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605595129] [2021-12-16 06:07:42,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:42,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 06:07:42,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 06:07:42,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:07:42,836 INFO L87 Difference]: Start difference. First operand 620 states and 804 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) [2021-12-16 06:07:43,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:43,305 INFO L93 Difference]: Finished difference Result 644 states and 835 transitions. [2021-12-16 06:07:43,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 06:07:43,305 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 [2021-12-16 06:07:43,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:43,307 INFO L225 Difference]: With dead ends: 644 [2021-12-16 06:07:43,307 INFO L226 Difference]: Without dead ends: 622 [2021-12-16 06:07:43,307 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 [2021-12-16 06:07:43,307 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 116 mSDsluCounter, 3179 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 3603 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:43,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 3603 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 06:07:43,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-12-16 06:07:43,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 610. [2021-12-16 06:07:43,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 521 states have (on average 1.2917466410748562) internal successors, (673), 528 states have internal predecessors, (673), 52 states have call successors, (52), 27 states have call predecessors, (52), 36 states have return successors, (65), 54 states have call predecessors, (65), 47 states have call successors, (65) [2021-12-16 06:07:43,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 790 transitions. [2021-12-16 06:07:43,314 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 790 transitions. Word has length 54 [2021-12-16 06:07:43,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:43,314 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 790 transitions. [2021-12-16 06:07:43,314 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) [2021-12-16 06:07:43,315 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 790 transitions. [2021-12-16 06:07:43,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-16 06:07:43,316 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:43,316 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] [2021-12-16 06:07:43,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-16 06:07:43,316 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:43,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:43,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2057071680, now seen corresponding path program 1 times [2021-12-16 06:07:43,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:43,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897975458] [2021-12-16 06:07:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:43,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:43,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:07:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:43,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 06:07:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:43,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:43,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:43,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897975458] [2021-12-16 06:07:43,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897975458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:43,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:43,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:43,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422788498] [2021-12-16 06:07:43,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:43,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:43,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:43,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:43,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:43,356 INFO L87 Difference]: Start difference. First operand 610 states and 790 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) [2021-12-16 06:07:43,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:43,581 INFO L93 Difference]: Finished difference Result 622 states and 807 transitions. [2021-12-16 06:07:43,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:43,581 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 [2021-12-16 06:07:43,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:43,583 INFO L225 Difference]: With dead ends: 622 [2021-12-16 06:07:43,583 INFO L226 Difference]: Without dead ends: 617 [2021-12-16 06:07:43,583 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 [2021-12-16 06:07:43,585 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 94 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1973 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:43,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 1973 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:43,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-12-16 06:07:43,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 605. [2021-12-16 06:07:43,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 517 states have (on average 1.2920696324951644) internal successors, (668), 524 states have internal predecessors, (668), 51 states have call successors, (51), 27 states have call predecessors, (51), 36 states have return successors, (64), 53 states have call predecessors, (64), 46 states have call successors, (64) [2021-12-16 06:07:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 783 transitions. [2021-12-16 06:07:43,593 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 783 transitions. Word has length 54 [2021-12-16 06:07:43,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:43,593 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 783 transitions. [2021-12-16 06:07:43,593 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) [2021-12-16 06:07:43,594 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 783 transitions. [2021-12-16 06:07:43,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-16 06:07:43,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:43,595 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] [2021-12-16 06:07:43,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-16 06:07:43,595 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:43,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:43,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1301879028, now seen corresponding path program 1 times [2021-12-16 06:07:43,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:43,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309151724] [2021-12-16 06:07:43,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:43,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:43,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 06:07:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:43,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 06:07:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:43,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:43,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309151724] [2021-12-16 06:07:43,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309151724] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:43,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:43,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 06:07:43,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275879187] [2021-12-16 06:07:43,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:43,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 06:07:43,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:43,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 06:07:43,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:07:43,665 INFO L87 Difference]: Start difference. First operand 605 states and 783 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) [2021-12-16 06:07:43,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:43,999 INFO L93 Difference]: Finished difference Result 637 states and 823 transitions. [2021-12-16 06:07:44,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 06:07:44,000 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 [2021-12-16 06:07:44,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:44,001 INFO L225 Difference]: With dead ends: 637 [2021-12-16 06:07:44,002 INFO L226 Difference]: Without dead ends: 614 [2021-12-16 06:07:44,002 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 [2021-12-16 06:07:44,002 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 232 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:44,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 3177 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:44,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-12-16 06:07:44,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 602. [2021-12-16 06:07:44,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 515 states have (on average 1.2912621359223302) internal successors, (665), 522 states have internal predecessors, (665), 50 states have call successors, (50), 27 states have call predecessors, (50), 36 states have return successors, (63), 52 states have call predecessors, (63), 45 states have call successors, (63) [2021-12-16 06:07:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 778 transitions. [2021-12-16 06:07:44,010 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 778 transitions. Word has length 54 [2021-12-16 06:07:44,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:44,010 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 778 transitions. [2021-12-16 06:07:44,010 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) [2021-12-16 06:07:44,011 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 778 transitions. [2021-12-16 06:07:44,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-16 06:07:44,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:44,012 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] [2021-12-16 06:07:44,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-16 06:07:44,012 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:44,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:44,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1138075636, now seen corresponding path program 1 times [2021-12-16 06:07:44,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:44,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41829592] [2021-12-16 06:07:44,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:44,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:44,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:44,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:44,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:44,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41829592] [2021-12-16 06:07:44,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41829592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:44,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:44,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:44,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452393097] [2021-12-16 06:07:44,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:44,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:44,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:44,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:44,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:44,068 INFO L87 Difference]: Start difference. First operand 602 states and 778 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) [2021-12-16 06:07:44,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:44,504 INFO L93 Difference]: Finished difference Result 683 states and 886 transitions. [2021-12-16 06:07:44,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 06:07:44,505 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 [2021-12-16 06:07:44,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:44,506 INFO L225 Difference]: With dead ends: 683 [2021-12-16 06:07:44,506 INFO L226 Difference]: Without dead ends: 683 [2021-12-16 06:07:44,506 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 [2021-12-16 06:07:44,506 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 701 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:44,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 1462 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 06:07:44,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-12-16 06:07:44,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 599. [2021-12-16 06:07:44,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 512 states have (on average 1.2890625) internal successors, (660), 519 states have internal predecessors, (660), 50 states have call successors, (50), 27 states have call predecessors, (50), 36 states have return successors, (63), 52 states have call predecessors, (63), 45 states have call successors, (63) [2021-12-16 06:07:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 773 transitions. [2021-12-16 06:07:44,513 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 773 transitions. Word has length 54 [2021-12-16 06:07:44,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:44,513 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 773 transitions. [2021-12-16 06:07:44,513 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) [2021-12-16 06:07:44,513 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 773 transitions. [2021-12-16 06:07:44,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-16 06:07:44,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:44,514 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] [2021-12-16 06:07:44,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-16 06:07:44,514 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:44,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:44,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1137798806, now seen corresponding path program 1 times [2021-12-16 06:07:44,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:44,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118044594] [2021-12-16 06:07:44,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:44,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:44,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:44,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:44,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:44,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118044594] [2021-12-16 06:07:44,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118044594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:44,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:44,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 06:07:44,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693364660] [2021-12-16 06:07:44,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:44,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 06:07:44,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:44,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 06:07:44,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:07:44,598 INFO L87 Difference]: Start difference. First operand 599 states and 773 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) [2021-12-16 06:07:45,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:45,111 INFO L93 Difference]: Finished difference Result 618 states and 797 transitions. [2021-12-16 06:07:45,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 06:07:45,112 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 [2021-12-16 06:07:45,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:45,113 INFO L225 Difference]: With dead ends: 618 [2021-12-16 06:07:45,113 INFO L226 Difference]: Without dead ends: 593 [2021-12-16 06:07:45,113 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 [2021-12-16 06:07:45,114 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 219 mSDsluCounter, 2414 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:45,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 2795 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 06:07:45,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-12-16 06:07:45,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 577. [2021-12-16 06:07:45,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 491 states have (on average 1.2830957230142566) internal successors, (630), 498 states have internal predecessors, (630), 50 states have call successors, (50), 27 states have call predecessors, (50), 35 states have return successors, (62), 51 states have call predecessors, (62), 45 states have call successors, (62) [2021-12-16 06:07:45,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 742 transitions. [2021-12-16 06:07:45,120 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 742 transitions. Word has length 54 [2021-12-16 06:07:45,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:45,120 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 742 transitions. [2021-12-16 06:07:45,120 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) [2021-12-16 06:07:45,120 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 742 transitions. [2021-12-16 06:07:45,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-16 06:07:45,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:45,121 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] [2021-12-16 06:07:45,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-16 06:07:45,122 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:45,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:45,122 INFO L85 PathProgramCache]: Analyzing trace with hash -2015257924, now seen corresponding path program 1 times [2021-12-16 06:07:45,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:45,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491371510] [2021-12-16 06:07:45,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:45,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:45,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:45,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:45,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:45,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:45,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491371510] [2021-12-16 06:07:45,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491371510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:45,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:45,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:45,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144274966] [2021-12-16 06:07:45,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:45,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:45,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:45,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:45,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:45,155 INFO L87 Difference]: Start difference. First operand 577 states and 742 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) [2021-12-16 06:07:45,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:45,344 INFO L93 Difference]: Finished difference Result 592 states and 756 transitions. [2021-12-16 06:07:45,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:45,344 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 [2021-12-16 06:07:45,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:45,345 INFO L225 Difference]: With dead ends: 592 [2021-12-16 06:07:45,346 INFO L226 Difference]: Without dead ends: 582 [2021-12-16 06:07:45,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:45,346 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 233 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:45,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 960 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:45,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-12-16 06:07:45,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 566. [2021-12-16 06:07:45,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 481 states have (on average 1.2744282744282744) internal successors, (613), 488 states have internal predecessors, (613), 50 states have call successors, (50), 27 states have call predecessors, (50), 34 states have return successors, (61), 50 states have call predecessors, (61), 45 states have call successors, (61) [2021-12-16 06:07:45,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 724 transitions. [2021-12-16 06:07:45,352 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 724 transitions. Word has length 54 [2021-12-16 06:07:45,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:45,352 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 724 transitions. [2021-12-16 06:07:45,352 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) [2021-12-16 06:07:45,352 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 724 transitions. [2021-12-16 06:07:45,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-16 06:07:45,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:45,353 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] [2021-12-16 06:07:45,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-16 06:07:45,353 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:45,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:45,354 INFO L85 PathProgramCache]: Analyzing trace with hash 169253140, now seen corresponding path program 1 times [2021-12-16 06:07:45,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:45,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357253287] [2021-12-16 06:07:45,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:45,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:45,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:45,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 06:07:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:45,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:45,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:45,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357253287] [2021-12-16 06:07:45,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357253287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:45,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:45,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 06:07:45,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600338628] [2021-12-16 06:07:45,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:45,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:07:45,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:45,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:07:45,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:45,403 INFO L87 Difference]: Start difference. First operand 566 states and 724 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) [2021-12-16 06:07:45,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:45,638 INFO L93 Difference]: Finished difference Result 596 states and 761 transitions. [2021-12-16 06:07:45,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:45,639 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 [2021-12-16 06:07:45,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:45,640 INFO L225 Difference]: With dead ends: 596 [2021-12-16 06:07:45,640 INFO L226 Difference]: Without dead ends: 596 [2021-12-16 06:07:45,640 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 [2021-12-16 06:07:45,641 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 282 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:45,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 1637 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:45,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-12-16 06:07:45,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 566. [2021-12-16 06:07:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 481 states have (on average 1.2723492723492724) internal successors, (612), 488 states have internal predecessors, (612), 50 states have call successors, (50), 27 states have call predecessors, (50), 34 states have return successors, (61), 50 states have call predecessors, (61), 45 states have call successors, (61) [2021-12-16 06:07:45,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 723 transitions. [2021-12-16 06:07:45,647 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 723 transitions. Word has length 56 [2021-12-16 06:07:45,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:45,647 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 723 transitions. [2021-12-16 06:07:45,647 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) [2021-12-16 06:07:45,647 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 723 transitions. [2021-12-16 06:07:45,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-16 06:07:45,648 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:45,648 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] [2021-12-16 06:07:45,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-16 06:07:45,649 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:45,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:45,649 INFO L85 PathProgramCache]: Analyzing trace with hash 191885394, now seen corresponding path program 1 times [2021-12-16 06:07:45,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:45,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345391676] [2021-12-16 06:07:45,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:45,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:45,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:45,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 06:07:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:45,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:45,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:45,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345391676] [2021-12-16 06:07:45,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345391676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:45,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:45,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-16 06:07:45,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245636881] [2021-12-16 06:07:45,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:45,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 06:07:45,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:45,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 06:07:45,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-16 06:07:45,787 INFO L87 Difference]: Start difference. First operand 566 states and 723 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) [2021-12-16 06:07:46,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:46,323 INFO L93 Difference]: Finished difference Result 618 states and 787 transitions. [2021-12-16 06:07:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 06:07:46,324 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 [2021-12-16 06:07:46,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:46,325 INFO L225 Difference]: With dead ends: 618 [2021-12-16 06:07:46,325 INFO L226 Difference]: Without dead ends: 591 [2021-12-16 06:07:46,325 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 [2021-12-16 06:07:46,326 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 260 mSDsluCounter, 3328 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 3728 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:46,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 3728 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 06:07:46,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-12-16 06:07:46,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 561. [2021-12-16 06:07:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 477 states have (on average 1.2683438155136268) internal successors, (605), 484 states have internal predecessors, (605), 49 states have call successors, (49), 27 states have call predecessors, (49), 34 states have return successors, (59), 49 states have call predecessors, (59), 44 states have call successors, (59) [2021-12-16 06:07:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 713 transitions. [2021-12-16 06:07:46,332 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 713 transitions. Word has length 56 [2021-12-16 06:07:46,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:46,332 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 713 transitions. [2021-12-16 06:07:46,332 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) [2021-12-16 06:07:46,333 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 713 transitions. [2021-12-16 06:07:46,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-16 06:07:46,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:46,334 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] [2021-12-16 06:07:46,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-16 06:07:46,334 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:46,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:46,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1983153674, now seen corresponding path program 1 times [2021-12-16 06:07:46,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:46,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303877961] [2021-12-16 06:07:46,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:46,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:46,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:46,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 06:07:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:46,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:46,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:46,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:46,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303877961] [2021-12-16 06:07:46,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303877961] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:46,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:46,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 06:07:46,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572499120] [2021-12-16 06:07:46,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:46,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:07:46,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:46,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:07:46,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:46,393 INFO L87 Difference]: Start difference. First operand 561 states and 713 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) [2021-12-16 06:07:46,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:46,689 INFO L93 Difference]: Finished difference Result 573 states and 730 transitions. [2021-12-16 06:07:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:46,690 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 [2021-12-16 06:07:46,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:46,691 INFO L225 Difference]: With dead ends: 573 [2021-12-16 06:07:46,691 INFO L226 Difference]: Without dead ends: 567 [2021-12-16 06:07:46,691 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 [2021-12-16 06:07:46,692 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 170 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:46,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 1954 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:46,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-12-16 06:07:46,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 555. [2021-12-16 06:07:46,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 472 states have (on average 1.2690677966101696) internal successors, (599), 479 states have internal predecessors, (599), 48 states have call successors, (48), 27 states have call predecessors, (48), 34 states have return successors, (58), 48 states have call predecessors, (58), 43 states have call successors, (58) [2021-12-16 06:07:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 705 transitions. [2021-12-16 06:07:46,699 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 705 transitions. Word has length 56 [2021-12-16 06:07:46,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:46,699 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 705 transitions. [2021-12-16 06:07:46,699 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) [2021-12-16 06:07:46,700 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 705 transitions. [2021-12-16 06:07:46,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-16 06:07:46,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:46,701 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] [2021-12-16 06:07:46,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-12-16 06:07:46,701 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:46,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:46,702 INFO L85 PathProgramCache]: Analyzing trace with hash 297829050, now seen corresponding path program 1 times [2021-12-16 06:07:46,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:46,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958152092] [2021-12-16 06:07:46,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:46,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:46,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:46,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:46,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:46,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958152092] [2021-12-16 06:07:46,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958152092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:46,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:46,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 06:07:46,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024386719] [2021-12-16 06:07:46,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:46,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 06:07:46,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:46,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 06:07:46,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:07:46,796 INFO L87 Difference]: Start difference. First operand 555 states and 705 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) [2021-12-16 06:07:47,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:47,262 INFO L93 Difference]: Finished difference Result 627 states and 787 transitions. [2021-12-16 06:07:47,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 06:07:47,262 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 [2021-12-16 06:07:47,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:47,264 INFO L225 Difference]: With dead ends: 627 [2021-12-16 06:07:47,264 INFO L226 Difference]: Without dead ends: 606 [2021-12-16 06:07:47,264 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 [2021-12-16 06:07:47,264 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 225 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:47,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 2895 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 06:07:47,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-12-16 06:07:47,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 561. [2021-12-16 06:07:47,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 478 states have (on average 1.2573221757322175) internal successors, (601), 485 states have internal predecessors, (601), 48 states have call successors, (48), 27 states have call predecessors, (48), 34 states have return successors, (58), 48 states have call predecessors, (58), 43 states have call successors, (58) [2021-12-16 06:07:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 707 transitions. [2021-12-16 06:07:47,270 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 707 transitions. Word has length 56 [2021-12-16 06:07:47,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:47,271 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 707 transitions. [2021-12-16 06:07:47,271 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) [2021-12-16 06:07:47,271 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 707 transitions. [2021-12-16 06:07:47,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-16 06:07:47,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:47,273 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] [2021-12-16 06:07:47,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-12-16 06:07:47,273 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:47,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:47,274 INFO L85 PathProgramCache]: Analyzing trace with hash -353317419, now seen corresponding path program 1 times [2021-12-16 06:07:47,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:47,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582441408] [2021-12-16 06:07:47,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:47,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:47,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 06:07:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:47,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 06:07:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:47,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:47,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:47,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582441408] [2021-12-16 06:07:47,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582441408] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:47,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:47,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 06:07:47,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543459151] [2021-12-16 06:07:47,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:47,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:07:47,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:47,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:07:47,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:47,333 INFO L87 Difference]: Start difference. First operand 561 states and 707 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) [2021-12-16 06:07:47,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:47,581 INFO L93 Difference]: Finished difference Result 572 states and 722 transitions. [2021-12-16 06:07:47,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:47,582 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 [2021-12-16 06:07:47,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:47,583 INFO L225 Difference]: With dead ends: 572 [2021-12-16 06:07:47,583 INFO L226 Difference]: Without dead ends: 561 [2021-12-16 06:07:47,583 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 [2021-12-16 06:07:47,583 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 264 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:47,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 1479 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:47,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-12-16 06:07:47,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 549. [2021-12-16 06:07:47,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 467 states have (on average 1.2526766595289078) internal successors, (585), 474 states have internal predecessors, (585), 47 states have call successors, (47), 27 states have call predecessors, (47), 34 states have return successors, (57), 47 states have call predecessors, (57), 42 states have call successors, (57) [2021-12-16 06:07:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 689 transitions. [2021-12-16 06:07:47,588 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 689 transitions. Word has length 58 [2021-12-16 06:07:47,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:47,588 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 689 transitions. [2021-12-16 06:07:47,589 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) [2021-12-16 06:07:47,589 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 689 transitions. [2021-12-16 06:07:47,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-16 06:07:47,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:47,590 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] [2021-12-16 06:07:47,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-12-16 06:07:47,590 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:47,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:47,591 INFO L85 PathProgramCache]: Analyzing trace with hash 908630671, now seen corresponding path program 1 times [2021-12-16 06:07:47,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:47,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624531783] [2021-12-16 06:07:47,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:47,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:47,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 06:07:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:47,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:47,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:47,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624531783] [2021-12-16 06:07:47,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624531783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:47,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:47,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 06:07:47,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979710401] [2021-12-16 06:07:47,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:47,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 06:07:47,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:47,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 06:07:47,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:07:47,663 INFO L87 Difference]: Start difference. First operand 549 states and 689 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) [2021-12-16 06:07:48,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:48,114 INFO L93 Difference]: Finished difference Result 574 states and 720 transitions. [2021-12-16 06:07:48,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 06:07:48,114 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 [2021-12-16 06:07:48,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:48,115 INFO L225 Difference]: With dead ends: 574 [2021-12-16 06:07:48,115 INFO L226 Difference]: Without dead ends: 559 [2021-12-16 06:07:48,116 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 [2021-12-16 06:07:48,116 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 115 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 2963 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:48,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 2963 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 06:07:48,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-12-16 06:07:48,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 547. [2021-12-16 06:07:48,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 466 states have (on average 1.2510729613733906) internal successors, (583), 473 states have internal predecessors, (583), 46 states have call successors, (46), 27 states have call predecessors, (46), 34 states have return successors, (56), 46 states have call predecessors, (56), 41 states have call successors, (56) [2021-12-16 06:07:48,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 685 transitions. [2021-12-16 06:07:48,121 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 685 transitions. Word has length 57 [2021-12-16 06:07:48,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:48,121 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 685 transitions. [2021-12-16 06:07:48,121 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) [2021-12-16 06:07:48,121 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 685 transitions. [2021-12-16 06:07:48,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-16 06:07:48,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:48,122 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] [2021-12-16 06:07:48,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-12-16 06:07:48,123 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:48,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:48,123 INFO L85 PathProgramCache]: Analyzing trace with hash -657100087, now seen corresponding path program 1 times [2021-12-16 06:07:48,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:48,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548194794] [2021-12-16 06:07:48,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:48,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 06:07:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:48,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:48,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548194794] [2021-12-16 06:07:48,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548194794] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:48,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:48,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 06:07:48,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833849049] [2021-12-16 06:07:48,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:48,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 06:07:48,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:48,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 06:07:48,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:07:48,239 INFO L87 Difference]: Start difference. First operand 547 states and 685 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) [2021-12-16 06:07:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:49,361 INFO L93 Difference]: Finished difference Result 1046 states and 1314 transitions. [2021-12-16 06:07:49,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-16 06:07:49,361 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 [2021-12-16 06:07:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:49,363 INFO L225 Difference]: With dead ends: 1046 [2021-12-16 06:07:49,363 INFO L226 Difference]: Without dead ends: 1039 [2021-12-16 06:07:49,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=273, Invalid=1287, Unknown=0, NotChecked=0, Total=1560 [2021-12-16 06:07:49,364 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 1011 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:49,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1033 Valid, 2643 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 06:07:49,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2021-12-16 06:07:49,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 778. [2021-12-16 06:07:49,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 658 states have (on average 1.2583586626139818) internal successors, (828), 673 states have internal predecessors, (828), 66 states have call successors, (66), 42 states have call predecessors, (66), 53 states have return successors, (84), 62 states have call predecessors, (84), 61 states have call successors, (84) [2021-12-16 06:07:49,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 978 transitions. [2021-12-16 06:07:49,373 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 978 transitions. Word has length 58 [2021-12-16 06:07:49,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:49,373 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 978 transitions. [2021-12-16 06:07:49,373 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) [2021-12-16 06:07:49,373 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 978 transitions. [2021-12-16 06:07:49,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-16 06:07:49,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:49,374 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] [2021-12-16 06:07:49,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-12-16 06:07:49,375 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:49,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:49,375 INFO L85 PathProgramCache]: Analyzing trace with hash 218918919, now seen corresponding path program 1 times [2021-12-16 06:07:49,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:49,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460156092] [2021-12-16 06:07:49,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:49,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 06:07:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:49,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:49,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460156092] [2021-12-16 06:07:49,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460156092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:49,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:49,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:49,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151202109] [2021-12-16 06:07:49,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:49,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:49,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:49,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:49,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:49,415 INFO L87 Difference]: Start difference. First operand 778 states and 978 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) [2021-12-16 06:07:49,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:49,887 INFO L93 Difference]: Finished difference Result 1036 states and 1302 transitions. [2021-12-16 06:07:49,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 06:07:49,888 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 [2021-12-16 06:07:49,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:49,890 INFO L225 Difference]: With dead ends: 1036 [2021-12-16 06:07:49,890 INFO L226 Difference]: Without dead ends: 1036 [2021-12-16 06:07:49,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-12-16 06:07:49,890 INFO L933 BasicCegarLoop]: 691 mSDtfsCounter, 1046 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:49,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 1983 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 06:07:49,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-12-16 06:07:49,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 591. [2021-12-16 06:07:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 505 states have (on average 1.2376237623762376) internal successors, (625), 512 states have internal predecessors, (625), 48 states have call successors, (48), 31 states have call predecessors, (48), 37 states have return successors, (58), 47 states have call predecessors, (58), 43 states have call successors, (58) [2021-12-16 06:07:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 731 transitions. [2021-12-16 06:07:49,898 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 731 transitions. Word has length 58 [2021-12-16 06:07:49,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:49,899 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 731 transitions. [2021-12-16 06:07:49,899 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) [2021-12-16 06:07:49,899 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 731 transitions. [2021-12-16 06:07:49,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-16 06:07:49,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:49,900 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] [2021-12-16 06:07:49,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-12-16 06:07:49,900 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:49,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:49,901 INFO L85 PathProgramCache]: Analyzing trace with hash -924829849, now seen corresponding path program 1 times [2021-12-16 06:07:49,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:49,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636194965] [2021-12-16 06:07:49,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:49,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 06:07:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 06:07:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 06:07:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 06:07:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:50,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:50,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636194965] [2021-12-16 06:07:50,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636194965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:50,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:50,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-16 06:07:50,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697250739] [2021-12-16 06:07:50,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:50,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 06:07:50,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:50,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 06:07:50,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-16 06:07:50,028 INFO L87 Difference]: Start difference. First operand 591 states and 731 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) [2021-12-16 06:07:50,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:50,570 INFO L93 Difference]: Finished difference Result 623 states and 772 transitions. [2021-12-16 06:07:50,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 06:07:50,570 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 [2021-12-16 06:07:50,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:50,571 INFO L225 Difference]: With dead ends: 623 [2021-12-16 06:07:50,572 INFO L226 Difference]: Without dead ends: 594 [2021-12-16 06:07:50,572 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 [2021-12-16 06:07:50,573 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 323 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:50,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 3058 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 06:07:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-12-16 06:07:50,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 582. [2021-12-16 06:07:50,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 498 states have (on average 1.2349397590361446) internal successors, (615), 505 states have internal predecessors, (615), 46 states have call successors, (46), 31 states have call predecessors, (46), 37 states have return successors, (55), 45 states have call predecessors, (55), 41 states have call successors, (55) [2021-12-16 06:07:50,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 716 transitions. [2021-12-16 06:07:50,578 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 716 transitions. Word has length 60 [2021-12-16 06:07:50,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:50,579 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 716 transitions. [2021-12-16 06:07:50,579 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) [2021-12-16 06:07:50,579 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 716 transitions. [2021-12-16 06:07:50,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-16 06:07:50,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:50,580 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, 1, 1, 1, 1] [2021-12-16 06:07:50,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-12-16 06:07:50,580 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:50,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:50,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1589833595, now seen corresponding path program 1 times [2021-12-16 06:07:50,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:50,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136025543] [2021-12-16 06:07:50,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:50,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 06:07:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 06:07:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:50,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:50,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136025543] [2021-12-16 06:07:50,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136025543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:50,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:50,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:50,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471242055] [2021-12-16 06:07:50,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:50,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:50,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:50,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:50,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:50,625 INFO L87 Difference]: Start difference. First operand 582 states and 716 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) [2021-12-16 06:07:50,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:50,845 INFO L93 Difference]: Finished difference Result 592 states and 729 transitions. [2021-12-16 06:07:50,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:50,845 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 [2021-12-16 06:07:50,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:50,846 INFO L225 Difference]: With dead ends: 592 [2021-12-16 06:07:50,846 INFO L226 Difference]: Without dead ends: 586 [2021-12-16 06:07:50,846 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 [2021-12-16 06:07:50,847 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 94 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:50,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 1604 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:50,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-12-16 06:07:50,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 574. [2021-12-16 06:07:50,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 491 states have (on average 1.234215885947047) internal successors, (606), 498 states have internal predecessors, (606), 45 states have call successors, (45), 31 states have call predecessors, (45), 37 states have return successors, (53), 44 states have call predecessors, (53), 40 states have call successors, (53) [2021-12-16 06:07:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 704 transitions. [2021-12-16 06:07:50,852 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 704 transitions. Word has length 58 [2021-12-16 06:07:50,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:50,852 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 704 transitions. [2021-12-16 06:07:50,852 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) [2021-12-16 06:07:50,852 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 704 transitions. [2021-12-16 06:07:50,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-16 06:07:50,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:50,853 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] [2021-12-16 06:07:50,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-12-16 06:07:50,854 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:50,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:50,854 INFO L85 PathProgramCache]: Analyzing trace with hash -2090035410, now seen corresponding path program 1 times [2021-12-16 06:07:50,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:50,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587070110] [2021-12-16 06:07:50,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:50,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 06:07:50,868 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 06:07:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 06:07:50,917 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 06:07:50,917 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 06:07:50,918 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-12-16 06:07:50,919 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-12-16 06:07:50,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-12-16 06:07:50,926 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] [2021-12-16 06:07:50,929 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 06:07:51,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:07:51 BoogieIcfgContainer [2021-12-16 06:07:51,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 06:07:51,018 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 06:07:51,019 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 06:07:51,019 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 06:07:51,019 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:23" (3/4) ... [2021-12-16 06:07:51,021 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 06:07:51,021 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 06:07:51,022 INFO L158 Benchmark]: Toolchain (without parser) took 28989.77ms. Allocated memory was 92.3MB in the beginning and 257.9MB in the end (delta: 165.7MB). Free memory was 59.7MB in the beginning and 110.1MB in the end (delta: -50.4MB). Peak memory consumption was 116.5MB. Max. memory is 16.1GB. [2021-12-16 06:07:51,022 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 75.5MB. Free memory was 41.1MB in the beginning and 41.0MB in the end (delta: 46.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 06:07:51,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.29ms. Allocated memory is still 92.3MB. Free memory was 59.5MB in the beginning and 49.6MB in the end (delta: 9.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-16 06:07:51,023 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.33ms. Allocated memory is still 92.3MB. Free memory was 49.6MB in the beginning and 42.6MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-16 06:07:51,023 INFO L158 Benchmark]: Boogie Preprocessor took 53.20ms. Allocated memory is still 92.3MB. Free memory was 42.6MB in the beginning and 38.0MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-16 06:07:51,024 INFO L158 Benchmark]: RCFGBuilder took 1204.58ms. Allocated memory was 92.3MB in the beginning and 132.1MB in the end (delta: 39.8MB). Free memory was 38.0MB in the beginning and 82.2MB in the end (delta: -44.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-12-16 06:07:51,024 INFO L158 Benchmark]: TraceAbstraction took 27195.89ms. Allocated memory was 132.1MB in the beginning and 257.9MB in the end (delta: 125.8MB). Free memory was 82.2MB in the beginning and 111.1MB in the end (delta: -28.9MB). Peak memory consumption was 97.6MB. Max. memory is 16.1GB. [2021-12-16 06:07:51,024 INFO L158 Benchmark]: Witness Printer took 3.05ms. Allocated memory is still 257.9MB. Free memory was 111.1MB in the beginning and 110.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 06:07:51,024 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 75.5MB. Free memory was 41.1MB in the beginning and 41.0MB in the end (delta: 46.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 452.29ms. Allocated memory is still 92.3MB. Free memory was 59.5MB in the beginning and 49.6MB in the end (delta: 9.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.33ms. Allocated memory is still 92.3MB. Free memory was 49.6MB in the beginning and 42.6MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.20ms. Allocated memory is still 92.3MB. Free memory was 42.6MB in the beginning and 38.0MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1204.58ms. Allocated memory was 92.3MB in the beginning and 132.1MB in the end (delta: 39.8MB). Free memory was 38.0MB in the beginning and 82.2MB in the end (delta: -44.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 27195.89ms. Allocated memory was 132.1MB in the beginning and 257.9MB in the end (delta: 125.8MB). Free memory was 82.2MB in the beginning and 111.1MB in the end (delta: -28.9MB). Peak memory consumption was 97.6MB. Max. memory is 16.1GB. * Witness Printer took 3.05ms. Allocated memory is still 257.9MB. Free memory was 111.1MB in the beginning and 110.1MB in the end (delta: 1.0MB). There was no memory consumed. 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 - UnprovableResult [Line: 59]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 59. Possible 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=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] [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=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] [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=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] [L1910] CALL, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(Context)=0, \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)=0, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=0, 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)=0, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=0, 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)=0, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=0, 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)=0, \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=0, 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=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] 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=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] [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=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] [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=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, 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=0, 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=0, 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=0, 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] - UnprovableResult [Line: 1717]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 471 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 27.1s, OverallIterations: 62, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 21.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20577 SdHoareTripleChecker+Valid, 18.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20127 mSDsluCounter, 146729 SdHoareTripleChecker+Invalid, 14.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 113492 mSDsCounter, 5289 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33612 IncrementalHoareTripleChecker+Invalid, 38901 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5289 mSolverCounterUnsat, 33237 mSDtfsCounter, 33612 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 834 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 573 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1073occurred in iteration=10, InterpolantAutomatonStates: 539, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 61 MinimizatonAttempts, 2838 StatesRemovedByMinimization, 56 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 2703 NumberOfCodeBlocks, 2703 NumberOfCodeBlocksAsserted, 62 NumberOfCheckSat, 2584 ConstructedInterpolants, 0 QuantifiedInterpolants, 6581 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 61 InterpolantComputations, 61 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces [2021-12-16 06:07:51,054 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bfc29f03d3be9b41eb07ac14f0f7eac45bf3a60a4a6601e3132f720b72534d53 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 06:07:52,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 06:07:52,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 06:07:52,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 06:07:52,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 06:07:52,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 06:07:52,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 06:07:52,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 06:07:52,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 06:07:52,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 06:07:52,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 06:07:52,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 06:07:52,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 06:07:52,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 06:07:52,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 06:07:52,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 06:07:52,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 06:07:52,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 06:07:52,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 06:07:52,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 06:07:52,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 06:07:52,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 06:07:52,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 06:07:52,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 06:07:52,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 06:07:52,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 06:07:52,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 06:07:52,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 06:07:52,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 06:07:52,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 06:07:52,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 06:07:52,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 06:07:52,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 06:07:52,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 06:07:52,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 06:07:52,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 06:07:52,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 06:07:52,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 06:07:52,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 06:07:52,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 06:07:52,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 06:07:52,892 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-16 06:07:52,920 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 06:07:52,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 06:07:52,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 06:07:52,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 06:07:52,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 06:07:52,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 06:07:52,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 06:07:52,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 06:07:52,924 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 06:07:52,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 06:07:52,924 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 06:07:52,925 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 06:07:52,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 06:07:52,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 06:07:52,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 06:07:52,925 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 06:07:52,925 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 06:07:52,926 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 06:07:52,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 06:07:52,926 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 06:07:52,926 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 06:07:52,926 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 06:07:52,926 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 06:07:52,926 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 06:07:52,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 06:07:52,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 06:07:52,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 06:07:52,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:07:52,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 06:07:52,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 06:07:52,928 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 06:07:52,928 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 06:07:52,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 06:07:52,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 06:07:52,928 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc29f03d3be9b41eb07ac14f0f7eac45bf3a60a4a6601e3132f720b72534d53 [2021-12-16 06:07:53,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 06:07:53,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 06:07:53,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 06:07:53,211 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 06:07:53,212 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 06:07:53,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2021-12-16 06:07:53,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518b24c2f/9c5caf55979a43dbbf507c25f40ff645/FLAG26dde8ebb [2021-12-16 06:07:53,709 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 06:07:53,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2021-12-16 06:07:53,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518b24c2f/9c5caf55979a43dbbf507c25f40ff645/FLAG26dde8ebb [2021-12-16 06:07:53,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518b24c2f/9c5caf55979a43dbbf507c25f40ff645 [2021-12-16 06:07:53,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 06:07:53,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 06:07:53,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 06:07:53,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 06:07:53,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 06:07:53,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:07:53" (1/1) ... [2021-12-16 06:07:53,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28496ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:53, skipping insertion in model container [2021-12-16 06:07:53,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:07:53" (1/1) ... [2021-12-16 06:07:53,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 06:07:53,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 06:07:53,965 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] [2021-12-16 06:07:54,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:07:54,132 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 06:07:54,141 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] [2021-12-16 06:07:54,208 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:07:54,219 INFO L208 MainTranslator]: Completed translation [2021-12-16 06:07:54,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:54 WrapperNode [2021-12-16 06:07:54,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 06:07:54,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 06:07:54,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 06:07:54,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 06:07:54,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:54" (1/1) ... [2021-12-16 06:07:54,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:54" (1/1) ... [2021-12-16 06:07:54,306 INFO L137 Inliner]: procedures = 41, calls = 108, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 1444 [2021-12-16 06:07:54,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 06:07:54,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 06:07:54,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 06:07:54,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 06:07:54,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:54" (1/1) ... [2021-12-16 06:07:54,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:54" (1/1) ... [2021-12-16 06:07:54,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:54" (1/1) ... [2021-12-16 06:07:54,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:54" (1/1) ... [2021-12-16 06:07:54,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:54" (1/1) ... [2021-12-16 06:07:54,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:54" (1/1) ... [2021-12-16 06:07:54,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:54" (1/1) ... [2021-12-16 06:07:54,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 06:07:54,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 06:07:54,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 06:07:54,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 06:07:54,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:54" (1/1) ... [2021-12-16 06:07:54,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:07:54,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 06:07:54,412 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) [2021-12-16 06:07:54,427 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 [2021-12-16 06:07:54,445 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2021-12-16 06:07:54,446 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2021-12-16 06:07:54,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 06:07:54,447 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2021-12-16 06:07:54,447 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2021-12-16 06:07:54,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 06:07:54,448 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-12-16 06:07:54,449 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-12-16 06:07:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2021-12-16 06:07:54,452 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2021-12-16 06:07:54,452 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-16 06:07:54,452 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-16 06:07:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-16 06:07:54,462 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-16 06:07:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2021-12-16 06:07:54,462 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2021-12-16 06:07:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-12-16 06:07:54,462 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-12-16 06:07:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2021-12-16 06:07:54,463 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2021-12-16 06:07:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-16 06:07:54,463 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-16 06:07:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-16 06:07:54,463 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-16 06:07:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2021-12-16 06:07:54,463 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2021-12-16 06:07:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 06:07:54,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 06:07:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2021-12-16 06:07:54,464 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2021-12-16 06:07:54,691 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 06:07:54,692 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 06:07:54,760 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:54,814 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-12-16 06:07:54,814 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-12-16 06:07:54,877 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:54,905 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-16 06:07:54,905 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-16 06:07:54,914 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:54,916 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:54,919 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:54,924 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:54,931 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:54,933 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:54,935 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:55,390 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: CdAudioPnp_#res#1 := 0bv32; [2021-12-16 06:07:55,390 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##258: assume !false; [2021-12-16 06:07:55,390 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##257: assume false; [2021-12-16 06:07:55,390 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##286: assume !false; [2021-12-16 06:07:55,390 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##285: assume false; [2021-12-16 06:07:55,391 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !false; [2021-12-16 06:07:55,391 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume false; [2021-12-16 06:07:55,391 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##133: assume false; [2021-12-16 06:07:55,391 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##134: assume !false; [2021-12-16 06:07:55,391 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2021-12-16 06:07:55,391 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2021-12-16 06:07:55,391 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-12-16 06:07:55,391 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-12-16 06:07:55,391 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##331: assume false; [2021-12-16 06:07:55,392 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##332: assume !false; [2021-12-16 06:07:55,445 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 06:07:55,457 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 06:07:55,457 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 06:07:55,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:55 BoogieIcfgContainer [2021-12-16 06:07:55,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 06:07:55,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 06:07:55,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 06:07:55,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 06:07:55,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:07:53" (1/3) ... [2021-12-16 06:07:55,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e561ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:07:55, skipping insertion in model container [2021-12-16 06:07:55,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:54" (2/3) ... [2021-12-16 06:07:55,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e561ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:07:55, skipping insertion in model container [2021-12-16 06:07:55,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:55" (3/3) ... [2021-12-16 06:07:55,464 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.c [2021-12-16 06:07:55,468 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 06:07:55,468 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 06:07:55,517 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 06:07:55,525 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-12-16 06:07:55,525 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 06:07:55,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 471 states, 368 states have (on average 1.5108695652173914) internal successors, (556), 388 states have internal predecessors, (556), 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) [2021-12-16 06:07:55,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 06:07:55,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:55,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:55,555 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:55,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:55,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2107937846, now seen corresponding path program 1 times [2021-12-16 06:07:55,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:07:55,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166187321] [2021-12-16 06:07:55,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:55,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:07:55,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:07:55,570 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:07:55,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 06:07:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:55,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 06:07:55,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:07:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:55,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:07:55,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:07:55,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166187321] [2021-12-16 06:07:55,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166187321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:55,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:55,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:55,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841628159] [2021-12-16 06:07:55,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:55,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:55,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:07:55,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:55,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:55,804 INFO L87 Difference]: Start difference. First operand has 471 states, 368 states have (on average 1.5108695652173914) internal successors, (556), 388 states have internal predecessors, (556), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:55,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:55,896 INFO L93 Difference]: Finished difference Result 623 states and 925 transitions. [2021-12-16 06:07:55,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:55,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-16 06:07:55,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:55,916 INFO L225 Difference]: With dead ends: 623 [2021-12-16 06:07:55,918 INFO L226 Difference]: Without dead ends: 619 [2021-12-16 06:07:55,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:55,926 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 690 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 952 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 [2021-12-16 06:07:55,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 952 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:55,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-12-16 06:07:56,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 603. [2021-12-16 06:07:56,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 486 states have (on average 1.4732510288065843) internal successors, (716), 494 states have internal predecessors, (716), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-12-16 06:07:56,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 904 transitions. [2021-12-16 06:07:56,023 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 904 transitions. Word has length 8 [2021-12-16 06:07:56,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:56,028 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 904 transitions. [2021-12-16 06:07:56,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:56,029 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 904 transitions. [2021-12-16 06:07:56,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 06:07:56,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:56,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:56,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-16 06:07:56,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:07:56,237 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:56,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:56,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1313128955, now seen corresponding path program 1 times [2021-12-16 06:07:56,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:07:56,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463642996] [2021-12-16 06:07:56,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:56,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:07:56,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:07:56,242 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:07:56,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-16 06:07:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 06:07:56,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:07:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:56,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:07:56,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:07:56,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463642996] [2021-12-16 06:07:56,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463642996] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:56,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:56,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:56,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252192532] [2021-12-16 06:07:56,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:56,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:56,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:07:56,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:56,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:56,433 INFO L87 Difference]: Start difference. First operand 603 states and 904 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:56,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:56,508 INFO L93 Difference]: Finished difference Result 606 states and 905 transitions. [2021-12-16 06:07:56,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:56,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-16 06:07:56,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:56,512 INFO L225 Difference]: With dead ends: 606 [2021-12-16 06:07:56,512 INFO L226 Difference]: Without dead ends: 606 [2021-12-16 06:07:56,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:56,513 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 385 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:56,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 946 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:56,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-12-16 06:07:56,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 603. [2021-12-16 06:07:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 486 states have (on average 1.47119341563786) internal successors, (715), 494 states have internal predecessors, (715), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-12-16 06:07:56,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 903 transitions. [2021-12-16 06:07:56,538 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 903 transitions. Word has length 9 [2021-12-16 06:07:56,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:56,539 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 903 transitions. [2021-12-16 06:07:56,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:56,539 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 903 transitions. [2021-12-16 06:07:56,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 06:07:56,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:56,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:56,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-16 06:07:56,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:07:56,748 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:56,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:56,749 INFO L85 PathProgramCache]: Analyzing trace with hash 929457737, now seen corresponding path program 1 times [2021-12-16 06:07:56,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:07:56,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171299431] [2021-12-16 06:07:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:56,749 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:07:56,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:07:56,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:07:56,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-16 06:07:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 06:07:56,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:07:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:56,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:07:56,880 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:07:56,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171299431] [2021-12-16 06:07:56,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171299431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:56,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:56,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 06:07:56,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499487359] [2021-12-16 06:07:56,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:56,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:56,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:07:56,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:56,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:56,882 INFO L87 Difference]: Start difference. First operand 603 states and 903 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:56,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:56,990 INFO L93 Difference]: Finished difference Result 602 states and 902 transitions. [2021-12-16 06:07:56,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:56,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-16 06:07:56,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:56,995 INFO L225 Difference]: With dead ends: 602 [2021-12-16 06:07:56,995 INFO L226 Difference]: Without dead ends: 599 [2021-12-16 06:07:56,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:56,997 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 418 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:56,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 850 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:56,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-12-16 06:07:57,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-12-16 06:07:57,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 483 states have (on average 1.453416149068323) internal successors, (702), 490 states have internal predecessors, (702), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-12-16 06:07:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 890 transitions. [2021-12-16 06:07:57,017 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 890 transitions. Word has length 9 [2021-12-16 06:07:57,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:57,017 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 890 transitions. [2021-12-16 06:07:57,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:57,017 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 890 transitions. [2021-12-16 06:07:57,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 06:07:57,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:57,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:57,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-16 06:07:57,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:07:57,231 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:57,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:57,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1469618489, now seen corresponding path program 1 times [2021-12-16 06:07:57,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:07:57,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133120540] [2021-12-16 06:07:57,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:57,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:07:57,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:07:57,233 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:07:57,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-16 06:07:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 06:07:57,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:07:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:57,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:07:57,409 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:07:57,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133120540] [2021-12-16 06:07:57,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133120540] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:57,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:57,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:57,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121848839] [2021-12-16 06:07:57,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:57,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:57,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:07:57,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:57,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:57,411 INFO L87 Difference]: Start difference. First operand 599 states and 890 transitions. 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) [2021-12-16 06:07:57,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:57,495 INFO L93 Difference]: Finished difference Result 602 states and 892 transitions. [2021-12-16 06:07:57,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:57,496 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 [2021-12-16 06:07:57,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:57,498 INFO L225 Difference]: With dead ends: 602 [2021-12-16 06:07:57,498 INFO L226 Difference]: Without dead ends: 599 [2021-12-16 06:07:57,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:57,499 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 0 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:57,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1335 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:57,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-12-16 06:07:57,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-12-16 06:07:57,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 483 states have (on average 1.4513457556935818) internal successors, (701), 490 states have internal predecessors, (701), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-12-16 06:07:57,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 889 transitions. [2021-12-16 06:07:57,511 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 889 transitions. Word has length 13 [2021-12-16 06:07:57,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:57,511 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 889 transitions. [2021-12-16 06:07:57,511 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) [2021-12-16 06:07:57,511 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 889 transitions. [2021-12-16 06:07:57,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-16 06:07:57,512 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:57,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:57,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-16 06:07:57,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:07:57,713 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:57,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:57,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1712839809, now seen corresponding path program 1 times [2021-12-16 06:07:57,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:07:57,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662347134] [2021-12-16 06:07:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:57,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:07:57,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:07:57,715 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:07:57,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-16 06:07:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 06:07:57,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:07:57,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:57,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:07:57,853 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:07:57,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662347134] [2021-12-16 06:07:57,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662347134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:57,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:57,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:57,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725052346] [2021-12-16 06:07:57,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:57,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:57,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:07:57,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:57,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:57,854 INFO L87 Difference]: Start difference. First operand 599 states and 889 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) [2021-12-16 06:07:58,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:58,045 INFO L93 Difference]: Finished difference Result 851 states and 1244 transitions. [2021-12-16 06:07:58,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:58,046 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 [2021-12-16 06:07:58,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:58,051 INFO L225 Difference]: With dead ends: 851 [2021-12-16 06:07:58,051 INFO L226 Difference]: Without dead ends: 850 [2021-12-16 06:07:58,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:58,052 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 567 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:58,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 1026 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:58,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2021-12-16 06:07:58,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 799. [2021-12-16 06:07:58,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 656 states have (on average 1.4222560975609757) internal successors, (933), 649 states have internal predecessors, (933), 107 states have call successors, (107), 31 states have call predecessors, (107), 35 states have return successors, (136), 122 states have call predecessors, (136), 96 states have call successors, (136) [2021-12-16 06:07:58,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1176 transitions. [2021-12-16 06:07:58,075 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1176 transitions. Word has length 15 [2021-12-16 06:07:58,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:58,075 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1176 transitions. [2021-12-16 06:07:58,076 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) [2021-12-16 06:07:58,076 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1176 transitions. [2021-12-16 06:07:58,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 06:07:58,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:58,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:58,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-16 06:07:58,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:07:58,288 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:58,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:58,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1930286977, now seen corresponding path program 1 times [2021-12-16 06:07:58,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:07:58,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584416418] [2021-12-16 06:07:58,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:58,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:07:58,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:07:58,290 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:07:58,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-16 06:07:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:58,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 06:07:58,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:07:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:58,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:07:58,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:07:58,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584416418] [2021-12-16 06:07:58,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584416418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:58,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:58,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:58,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878024138] [2021-12-16 06:07:58,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:58,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:58,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:07:58,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:58,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:58,473 INFO L87 Difference]: Start difference. First operand 799 states and 1176 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) [2021-12-16 06:07:58,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:58,502 INFO L93 Difference]: Finished difference Result 875 states and 1272 transitions. [2021-12-16 06:07:58,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:58,503 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 [2021-12-16 06:07:58,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:58,507 INFO L225 Difference]: With dead ends: 875 [2021-12-16 06:07:58,508 INFO L226 Difference]: Without dead ends: 875 [2021-12-16 06:07:58,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:58,512 INFO L933 BasicCegarLoop]: 667 mSDtfsCounter, 601 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 855 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 [2021-12-16 06:07:58,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 855 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:58,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-12-16 06:07:58,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 847. [2021-12-16 06:07:58,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 699 states have (on average 1.4406294706723892) internal successors, (1007), 703 states have internal predecessors, (1007), 106 states have call successors, (106), 35 states have call predecessors, (106), 41 states have return successors, (127), 108 states have call predecessors, (127), 98 states have call successors, (127) [2021-12-16 06:07:58,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1240 transitions. [2021-12-16 06:07:58,544 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1240 transitions. Word has length 19 [2021-12-16 06:07:58,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:58,545 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 1240 transitions. [2021-12-16 06:07:58,546 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) [2021-12-16 06:07:58,546 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1240 transitions. [2021-12-16 06:07:58,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-16 06:07:58,551 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:58,551 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] [2021-12-16 06:07:58,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-16 06:07:58,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:07:58,763 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:58,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:58,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1396316142, now seen corresponding path program 1 times [2021-12-16 06:07:58,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:07:58,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215671513] [2021-12-16 06:07:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:58,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:07:58,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:07:58,765 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:07:58,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-16 06:07:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:58,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 06:07:58,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:07:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:59,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:07:59,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:07:59,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215671513] [2021-12-16 06:07:59,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215671513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:59,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:59,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:59,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306591585] [2021-12-16 06:07:59,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:59,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:59,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:07:59,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:59,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:59,029 INFO L87 Difference]: Start difference. First operand 847 states and 1240 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) [2021-12-16 06:07:59,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:59,495 INFO L93 Difference]: Finished difference Result 894 states and 1294 transitions. [2021-12-16 06:07:59,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:07:59,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 [2021-12-16 06:07:59,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:59,499 INFO L225 Difference]: With dead ends: 894 [2021-12-16 06:07:59,499 INFO L226 Difference]: Without dead ends: 894 [2021-12-16 06:07:59,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:59,500 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 1045 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:59,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1046 Valid, 856 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 06:07:59,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2021-12-16 06:07:59,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 844. [2021-12-16 06:07:59,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 696 states have (on average 1.4295977011494252) internal successors, (995), 700 states have internal predecessors, (995), 106 states have call successors, (106), 35 states have call predecessors, (106), 41 states have return successors, (127), 108 states have call predecessors, (127), 98 states have call successors, (127) [2021-12-16 06:07:59,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1228 transitions. [2021-12-16 06:07:59,519 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1228 transitions. Word has length 21 [2021-12-16 06:07:59,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:59,519 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 1228 transitions. [2021-12-16 06:07:59,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) [2021-12-16 06:07:59,520 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1228 transitions. [2021-12-16 06:07:59,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-16 06:07:59,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:59,521 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] [2021-12-16 06:07:59,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-16 06:07:59,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:07:59,730 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:59,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:59,731 INFO L85 PathProgramCache]: Analyzing trace with hash -401986427, now seen corresponding path program 1 times [2021-12-16 06:07:59,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:07:59,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763478574] [2021-12-16 06:07:59,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:59,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:07:59,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:07:59,732 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:07:59,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-16 06:07:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:59,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 06:07:59,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:07:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:59,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:07:59,888 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:07:59,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763478574] [2021-12-16 06:07:59,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763478574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:59,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:59,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:59,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375182991] [2021-12-16 06:07:59,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:59,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:59,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:07:59,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:59,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:59,889 INFO L87 Difference]: Start difference. First operand 844 states and 1228 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) [2021-12-16 06:07:59,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:59,951 INFO L93 Difference]: Finished difference Result 843 states and 1225 transitions. [2021-12-16 06:07:59,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:59,952 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 [2021-12-16 06:07:59,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:59,956 INFO L225 Difference]: With dead ends: 843 [2021-12-16 06:07:59,956 INFO L226 Difference]: Without dead ends: 843 [2021-12-16 06:07:59,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:59,957 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 22 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1254 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 [2021-12-16 06:07:59,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1254 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:59,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-12-16 06:07:59,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2021-12-16 06:07:59,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 696 states have (on average 1.4267241379310345) internal successors, (993), 699 states have internal predecessors, (993), 105 states have call successors, (105), 35 states have call predecessors, (105), 41 states have return successors, (127), 108 states have call predecessors, (127), 98 states have call successors, (127) [2021-12-16 06:07:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1225 transitions. [2021-12-16 06:07:59,978 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1225 transitions. Word has length 23 [2021-12-16 06:07:59,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:59,979 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1225 transitions. [2021-12-16 06:07:59,979 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) [2021-12-16 06:07:59,979 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1225 transitions. [2021-12-16 06:07:59,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 06:07:59,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:59,981 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] [2021-12-16 06:07:59,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:00,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:00,192 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:00,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:00,193 INFO L85 PathProgramCache]: Analyzing trace with hash -607443031, now seen corresponding path program 1 times [2021-12-16 06:08:00,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:00,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846647086] [2021-12-16 06:08:00,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:00,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:00,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:00,208 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:00,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-16 06:08:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:00,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 06:08:00,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:00,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:00,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:00,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:00,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846647086] [2021-12-16 06:08:00,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846647086] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:00,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:00,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:08:00,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597335423] [2021-12-16 06:08:00,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:00,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:08:00,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:00,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:08:00,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:08:00,396 INFO L87 Difference]: Start difference. First operand 843 states and 1225 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:00,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:00,422 INFO L93 Difference]: Finished difference Result 761 states and 1092 transitions. [2021-12-16 06:08:00,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:08:00,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 3 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 [2021-12-16 06:08:00,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:00,426 INFO L225 Difference]: With dead ends: 761 [2021-12-16 06:08:00,426 INFO L226 Difference]: Without dead ends: 761 [2021-12-16 06:08:00,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:08:00,427 INFO L933 BasicCegarLoop]: 729 mSDtfsCounter, 186 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:00,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 1263 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:08:00,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-12-16 06:08:00,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 736. [2021-12-16 06:08:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 606 states have (on average 1.4207920792079207) internal successors, (861), 609 states have internal predecessors, (861), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (107), 96 states have call predecessors, (107), 88 states have call successors, (107) [2021-12-16 06:08:00,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1063 transitions. [2021-12-16 06:08:00,445 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1063 transitions. Word has length 35 [2021-12-16 06:08:00,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:00,445 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 1063 transitions. [2021-12-16 06:08:00,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:00,445 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1063 transitions. [2021-12-16 06:08:00,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 06:08:00,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:00,448 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] [2021-12-16 06:08:00,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:00,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:00,651 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:00,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:00,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1380818810, now seen corresponding path program 1 times [2021-12-16 06:08:00,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:00,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799587178] [2021-12-16 06:08:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:00,652 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:00,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:00,653 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:00,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-16 06:08:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:00,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 06:08:00,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:00,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:00,833 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:00,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799587178] [2021-12-16 06:08:00,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799587178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:00,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:00,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:08:00,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820349683] [2021-12-16 06:08:00,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:00,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:08:00,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:00,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:08:00,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:08:00,835 INFO L87 Difference]: Start difference. First operand 736 states and 1063 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:00,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:00,857 INFO L93 Difference]: Finished difference Result 667 states and 953 transitions. [2021-12-16 06:08:00,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:08:00,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 3 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 [2021-12-16 06:08:00,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:00,861 INFO L225 Difference]: With dead ends: 667 [2021-12-16 06:08:00,861 INFO L226 Difference]: Without dead ends: 667 [2021-12-16 06:08:00,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:08:00,862 INFO L933 BasicCegarLoop]: 740 mSDtfsCounter, 159 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:00,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 1313 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:08:00,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-12-16 06:08:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 640. [2021-12-16 06:08:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 528 states have (on average 1.4204545454545454) internal successors, (750), 534 states have internal predecessors, (750), 84 states have call successors, (84), 24 states have call predecessors, (84), 27 states have return successors, (88), 81 states have call predecessors, (88), 77 states have call successors, (88) [2021-12-16 06:08:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 922 transitions. [2021-12-16 06:08:00,879 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 922 transitions. Word has length 35 [2021-12-16 06:08:00,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:00,880 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 922 transitions. [2021-12-16 06:08:00,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:00,880 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 922 transitions. [2021-12-16 06:08:00,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-16 06:08:00,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:00,882 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] [2021-12-16 06:08:00,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:01,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:01,092 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:01,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:01,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1008894010, now seen corresponding path program 1 times [2021-12-16 06:08:01,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:01,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047272046] [2021-12-16 06:08:01,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:01,092 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:01,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:01,094 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:01,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-16 06:08:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:01,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 06:08:01,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:01,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:01,329 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:01,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047272046] [2021-12-16 06:08:01,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047272046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:01,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:01,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:08:01,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365868236] [2021-12-16 06:08:01,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:01,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:08:01,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:01,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:08:01,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:08:01,330 INFO L87 Difference]: Start difference. First operand 640 states and 922 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) [2021-12-16 06:08:01,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:01,590 INFO L93 Difference]: Finished difference Result 640 states and 920 transitions. [2021-12-16 06:08:01,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:08:01,590 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 [2021-12-16 06:08:01,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:01,593 INFO L225 Difference]: With dead ends: 640 [2021-12-16 06:08:01,593 INFO L226 Difference]: Without dead ends: 640 [2021-12-16 06:08:01,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:08:01,594 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 681 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:01,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 1096 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:08:01,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-12-16 06:08:01,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2021-12-16 06:08:01,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 528 states have (on average 1.4166666666666667) internal successors, (748), 534 states have internal predecessors, (748), 84 states have call successors, (84), 24 states have call predecessors, (84), 27 states have return successors, (88), 81 states have call predecessors, (88), 77 states have call successors, (88) [2021-12-16 06:08:01,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 920 transitions. [2021-12-16 06:08:01,619 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 920 transitions. Word has length 32 [2021-12-16 06:08:01,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:01,620 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 920 transitions. [2021-12-16 06:08:01,620 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) [2021-12-16 06:08:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 920 transitions. [2021-12-16 06:08:01,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-16 06:08:01,624 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:01,624 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] [2021-12-16 06:08:01,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-16 06:08:01,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:01,832 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:01,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:01,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1030908419, now seen corresponding path program 1 times [2021-12-16 06:08:01,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:01,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655029427] [2021-12-16 06:08:01,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:01,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:01,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:01,834 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:01,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-16 06:08:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:01,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 06:08:01,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:01,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:01,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:01,980 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:01,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655029427] [2021-12-16 06:08:01,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655029427] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:01,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:01,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:08:01,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187961774] [2021-12-16 06:08:01,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:01,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:08:01,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:01,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:08:01,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:08:01,983 INFO L87 Difference]: Start difference. First operand 640 states and 920 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:02,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:02,007 INFO L93 Difference]: Finished difference Result 659 states and 939 transitions. [2021-12-16 06:08:02,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:08:02,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 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 [2021-12-16 06:08:02,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:02,011 INFO L225 Difference]: With dead ends: 659 [2021-12-16 06:08:02,011 INFO L226 Difference]: Without dead ends: 659 [2021-12-16 06:08:02,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:08:02,012 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 569 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:02,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 817 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:08:02,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-12-16 06:08:02,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 639. [2021-12-16 06:08:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 527 states have (on average 1.413662239089184) internal successors, (745), 533 states have internal predecessors, (745), 84 states have call successors, (84), 24 states have call predecessors, (84), 27 states have return successors, (86), 81 states have call predecessors, (86), 77 states have call successors, (86) [2021-12-16 06:08:02,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 915 transitions. [2021-12-16 06:08:02,028 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 915 transitions. Word has length 36 [2021-12-16 06:08:02,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:02,029 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 915 transitions. [2021-12-16 06:08:02,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:02,029 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 915 transitions. [2021-12-16 06:08:02,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 06:08:02,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:02,031 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] [2021-12-16 06:08:02,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:02,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:02,241 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:02,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:02,241 INFO L85 PathProgramCache]: Analyzing trace with hash 138802049, now seen corresponding path program 1 times [2021-12-16 06:08:02,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:02,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129863471] [2021-12-16 06:08:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:02,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:02,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:02,243 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:02,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-16 06:08:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:02,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 06:08:02,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:02,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:02,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:02,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129863471] [2021-12-16 06:08:02,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129863471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:02,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:02,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:08:02,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860580813] [2021-12-16 06:08:02,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:02,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:08:02,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:02,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:08:02,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:08:02,393 INFO L87 Difference]: Start difference. First operand 639 states and 915 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) [2021-12-16 06:08:02,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:02,468 INFO L93 Difference]: Finished difference Result 767 states and 1086 transitions. [2021-12-16 06:08:02,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:08:02,469 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 [2021-12-16 06:08:02,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:02,471 INFO L225 Difference]: With dead ends: 767 [2021-12-16 06:08:02,472 INFO L226 Difference]: Without dead ends: 767 [2021-12-16 06:08:02,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:08:02,472 INFO L933 BasicCegarLoop]: 770 mSDtfsCounter, 135 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:02,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 1386 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:02,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2021-12-16 06:08:02,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 690. [2021-12-16 06:08:02,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 574 states have (on average 1.386759581881533) internal successors, (796), 573 states have internal predecessors, (796), 84 states have call successors, (84), 24 states have call predecessors, (84), 31 states have return successors, (97), 92 states have call predecessors, (97), 77 states have call successors, (97) [2021-12-16 06:08:02,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 977 transitions. [2021-12-16 06:08:02,485 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 977 transitions. Word has length 34 [2021-12-16 06:08:02,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:02,485 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 977 transitions. [2021-12-16 06:08:02,485 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) [2021-12-16 06:08:02,485 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 977 transitions. [2021-12-16 06:08:02,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 06:08:02,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:02,486 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] [2021-12-16 06:08:02,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:02,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:02,693 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:02,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:02,694 INFO L85 PathProgramCache]: Analyzing trace with hash -298326081, now seen corresponding path program 1 times [2021-12-16 06:08:02,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:02,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069022647] [2021-12-16 06:08:02,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:02,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:02,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:02,695 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:02,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-16 06:08:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:02,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 06:08:02,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:02,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:02,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:02,897 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:02,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069022647] [2021-12-16 06:08:02,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069022647] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:02,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:02,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:08:02,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867044391] [2021-12-16 06:08:02,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:02,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:08:02,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:02,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:08:02,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:08:02,898 INFO L87 Difference]: Start difference. First operand 690 states and 977 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) [2021-12-16 06:08:03,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:03,181 INFO L93 Difference]: Finished difference Result 671 states and 947 transitions. [2021-12-16 06:08:03,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:08:03,182 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 [2021-12-16 06:08:03,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:03,185 INFO L225 Difference]: With dead ends: 671 [2021-12-16 06:08:03,185 INFO L226 Difference]: Without dead ends: 671 [2021-12-16 06:08:03,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:08:03,186 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 673 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:03,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 1104 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:08:03,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-12-16 06:08:03,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2021-12-16 06:08:03,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 557 states have (on average 1.3913824057450628) internal successors, (775), 563 states have internal predecessors, (775), 84 states have call successors, (84), 24 states have call predecessors, (84), 29 states have return successors, (88), 83 states have call predecessors, (88), 77 states have call successors, (88) [2021-12-16 06:08:03,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 947 transitions. [2021-12-16 06:08:03,206 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 947 transitions. Word has length 34 [2021-12-16 06:08:03,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:03,206 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 947 transitions. [2021-12-16 06:08:03,206 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) [2021-12-16 06:08:03,206 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 947 transitions. [2021-12-16 06:08:03,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 06:08:03,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:03,208 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] [2021-12-16 06:08:03,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-16 06:08:03,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:03,417 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:03,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:03,418 INFO L85 PathProgramCache]: Analyzing trace with hash 452395651, now seen corresponding path program 1 times [2021-12-16 06:08:03,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:03,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840378060] [2021-12-16 06:08:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:03,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:03,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:03,419 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:03,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-16 06:08:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 06:08:03,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:03,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:03,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:03,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840378060] [2021-12-16 06:08:03,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840378060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:03,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:03,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:08:03,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165812878] [2021-12-16 06:08:03,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:03,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:08:03,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:03,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:08:03,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:08:03,669 INFO L87 Difference]: Start difference. First operand 671 states and 947 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) [2021-12-16 06:08:03,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:03,990 INFO L93 Difference]: Finished difference Result 746 states and 1053 transitions. [2021-12-16 06:08:03,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:08:03,991 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 [2021-12-16 06:08:03,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:03,993 INFO L225 Difference]: With dead ends: 746 [2021-12-16 06:08:03,993 INFO L226 Difference]: Without dead ends: 746 [2021-12-16 06:08:03,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:08:03,994 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 746 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:03,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 1197 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:08:03,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-12-16 06:08:04,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 674. [2021-12-16 06:08:04,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 560 states have (on average 1.3910714285714285) internal successors, (779), 566 states have internal predecessors, (779), 84 states have call successors, (84), 24 states have call predecessors, (84), 29 states have return successors, (88), 83 states have call predecessors, (88), 77 states have call successors, (88) [2021-12-16 06:08:04,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 951 transitions. [2021-12-16 06:08:04,006 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 951 transitions. Word has length 35 [2021-12-16 06:08:04,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:04,006 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 951 transitions. [2021-12-16 06:08:04,006 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) [2021-12-16 06:08:04,006 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 951 transitions. [2021-12-16 06:08:04,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 06:08:04,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:04,007 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] [2021-12-16 06:08:04,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:04,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:04,214 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:04,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:04,214 INFO L85 PathProgramCache]: Analyzing trace with hash 452672481, now seen corresponding path program 1 times [2021-12-16 06:08:04,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:04,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714593028] [2021-12-16 06:08:04,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:04,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:04,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:04,216 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:04,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-16 06:08:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:04,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 06:08:04,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:04,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:04,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:04,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714593028] [2021-12-16 06:08:04,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714593028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:04,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:04,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:08:04,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303962299] [2021-12-16 06:08:04,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:04,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:08:04,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:04,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:08:04,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:08:04,430 INFO L87 Difference]: Start difference. First operand 674 states and 951 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 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) [2021-12-16 06:08:04,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:04,517 INFO L93 Difference]: Finished difference Result 690 states and 967 transitions. [2021-12-16 06:08:04,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:08:04,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 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 [2021-12-16 06:08:04,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:04,519 INFO L225 Difference]: With dead ends: 690 [2021-12-16 06:08:04,519 INFO L226 Difference]: Without dead ends: 673 [2021-12-16 06:08:04,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:08:04,520 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 52 mSDsluCounter, 2570 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:04,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 3220 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:08:04,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-12-16 06:08:04,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2021-12-16 06:08:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 559 states have (on average 1.3899821109123434) internal successors, (777), 565 states have internal predecessors, (777), 84 states have call successors, (84), 24 states have call predecessors, (84), 29 states have return successors, (88), 83 states have call predecessors, (88), 77 states have call successors, (88) [2021-12-16 06:08:04,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 949 transitions. [2021-12-16 06:08:04,535 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 949 transitions. Word has length 35 [2021-12-16 06:08:04,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:04,536 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 949 transitions. [2021-12-16 06:08:04,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 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) [2021-12-16 06:08:04,536 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 949 transitions. [2021-12-16 06:08:04,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-16 06:08:04,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:04,537 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] [2021-12-16 06:08:04,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:04,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:04,745 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:04,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:04,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2080196380, now seen corresponding path program 1 times [2021-12-16 06:08:04,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:04,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95899401] [2021-12-16 06:08:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:04,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:04,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:04,746 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:04,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-16 06:08:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:04,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 06:08:04,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:04,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:04,883 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:04,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95899401] [2021-12-16 06:08:04,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95899401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:04,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:04,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:08:04,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485348015] [2021-12-16 06:08:04,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:04,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:08:04,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:04,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:08:04,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:08:04,885 INFO L87 Difference]: Start difference. First operand 673 states and 949 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:04,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:04,959 INFO L93 Difference]: Finished difference Result 699 states and 981 transitions. [2021-12-16 06:08:04,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:08:04,960 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, (2), 1 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 [2021-12-16 06:08:04,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:04,962 INFO L225 Difference]: With dead ends: 699 [2021-12-16 06:08:04,962 INFO L226 Difference]: Without dead ends: 699 [2021-12-16 06:08:04,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:08:04,962 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 49 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:04,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1897 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:04,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-12-16 06:08:04,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 675. [2021-12-16 06:08:04,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 561 states have (on average 1.3885918003565063) internal successors, (779), 567 states have internal predecessors, (779), 84 states have call successors, (84), 24 states have call predecessors, (84), 29 states have return successors, (88), 83 states have call predecessors, (88), 77 states have call successors, (88) [2021-12-16 06:08:04,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 951 transitions. [2021-12-16 06:08:04,974 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 951 transitions. Word has length 37 [2021-12-16 06:08:04,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:04,974 INFO L470 AbstractCegarLoop]: Abstraction has 675 states and 951 transitions. [2021-12-16 06:08:04,974 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:04,974 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 951 transitions. [2021-12-16 06:08:04,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-16 06:08:04,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:04,976 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] [2021-12-16 06:08:04,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:05,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:05,183 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:05,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:05,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1792069090, now seen corresponding path program 1 times [2021-12-16 06:08:05,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:05,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499637615] [2021-12-16 06:08:05,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:05,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:05,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:05,185 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:05,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-16 06:08:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 06:08:05,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:05,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:05,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:05,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499637615] [2021-12-16 06:08:05,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499637615] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:05,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:05,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:08:05,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534815395] [2021-12-16 06:08:05,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:05,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:08:05,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:05,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:08:05,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:08:05,333 INFO L87 Difference]: Start difference. First operand 675 states and 951 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) 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) [2021-12-16 06:08:05,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:05,380 INFO L93 Difference]: Finished difference Result 695 states and 973 transitions. [2021-12-16 06:08:05,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:08:05,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 [2021-12-16 06:08:05,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:05,383 INFO L225 Difference]: With dead ends: 695 [2021-12-16 06:08:05,383 INFO L226 Difference]: Without dead ends: 693 [2021-12-16 06:08:05,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:08:05,384 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 63 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:05,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 1222 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:08:05,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2021-12-16 06:08:05,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 689. [2021-12-16 06:08:05,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 575 states have (on average 1.3843478260869566) internal successors, (796), 581 states have internal predecessors, (796), 84 states have call successors, (84), 24 states have call predecessors, (84), 29 states have return successors, (88), 83 states have call predecessors, (88), 77 states have call successors, (88) [2021-12-16 06:08:05,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 968 transitions. [2021-12-16 06:08:05,398 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 968 transitions. Word has length 37 [2021-12-16 06:08:05,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:05,398 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 968 transitions. [2021-12-16 06:08:05,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-12-16 06:08:05,398 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 968 transitions. [2021-12-16 06:08:05,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-16 06:08:05,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:05,400 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] [2021-12-16 06:08:05,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:05,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:05,607 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:05,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:05,607 INFO L85 PathProgramCache]: Analyzing trace with hash 302691164, now seen corresponding path program 1 times [2021-12-16 06:08:05,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:05,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562362723] [2021-12-16 06:08:05,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:05,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:05,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:05,609 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:05,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-16 06:08:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 06:08:05,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:05,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:05,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:05,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562362723] [2021-12-16 06:08:05,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562362723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:05,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:05,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:08:05,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718051058] [2021-12-16 06:08:05,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:05,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:08:05,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:05,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:08:05,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:08:05,866 INFO L87 Difference]: Start difference. First operand 689 states and 968 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-12-16 06:08:05,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:05,959 INFO L93 Difference]: Finished difference Result 705 states and 984 transitions. [2021-12-16 06:08:05,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:08:05,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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 36 [2021-12-16 06:08:05,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:05,961 INFO L225 Difference]: With dead ends: 705 [2021-12-16 06:08:05,961 INFO L226 Difference]: Without dead ends: 688 [2021-12-16 06:08:05,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:08:05,962 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 39 mSDsluCounter, 3200 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3848 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:05,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 3848 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:08:05,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-12-16 06:08:05,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2021-12-16 06:08:05,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 574 states have (on average 1.3832752613240418) internal successors, (794), 580 states have internal predecessors, (794), 84 states have call successors, (84), 24 states have call predecessors, (84), 29 states have return successors, (88), 83 states have call predecessors, (88), 77 states have call successors, (88) [2021-12-16 06:08:05,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 966 transitions. [2021-12-16 06:08:05,974 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 966 transitions. Word has length 36 [2021-12-16 06:08:05,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:05,974 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 966 transitions. [2021-12-16 06:08:05,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-12-16 06:08:05,974 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 966 transitions. [2021-12-16 06:08:05,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-16 06:08:05,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:05,975 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] [2021-12-16 06:08:05,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:06,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:06,183 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:06,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:06,183 INFO L85 PathProgramCache]: Analyzing trace with hash 914570012, now seen corresponding path program 1 times [2021-12-16 06:08:06,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:06,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174052260] [2021-12-16 06:08:06,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:06,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:06,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:06,185 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:06,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-16 06:08:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:06,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 06:08:06,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:06,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:06,357 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:06,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174052260] [2021-12-16 06:08:06,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174052260] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:06,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:06,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:08:06,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723725102] [2021-12-16 06:08:06,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:06,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:08:06,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:06,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:08:06,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:08:06,359 INFO L87 Difference]: Start difference. First operand 688 states and 966 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-12-16 06:08:06,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:06,457 INFO L93 Difference]: Finished difference Result 698 states and 976 transitions. [2021-12-16 06:08:06,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:08:06,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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 36 [2021-12-16 06:08:06,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:06,461 INFO L225 Difference]: With dead ends: 698 [2021-12-16 06:08:06,461 INFO L226 Difference]: Without dead ends: 673 [2021-12-16 06:08:06,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:08:06,462 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 52 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:06,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 3197 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:08:06,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-12-16 06:08:06,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2021-12-16 06:08:06,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 559 states have (on average 1.3917710196779964) internal successors, (778), 565 states have internal predecessors, (778), 84 states have call successors, (84), 24 states have call predecessors, (84), 29 states have return successors, (88), 83 states have call predecessors, (88), 77 states have call successors, (88) [2021-12-16 06:08:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 950 transitions. [2021-12-16 06:08:06,479 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 950 transitions. Word has length 36 [2021-12-16 06:08:06,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:06,480 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 950 transitions. [2021-12-16 06:08:06,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-12-16 06:08:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 950 transitions. [2021-12-16 06:08:06,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-16 06:08:06,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:06,482 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] [2021-12-16 06:08:06,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:06,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:06,691 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:06,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:06,691 INFO L85 PathProgramCache]: Analyzing trace with hash 366960515, now seen corresponding path program 1 times [2021-12-16 06:08:06,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:06,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940612441] [2021-12-16 06:08:06,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:06,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:06,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:06,693 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:06,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-16 06:08:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:06,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 06:08:06,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:06,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:06,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:06,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940612441] [2021-12-16 06:08:06,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940612441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:06,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:06,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:08:06,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946166597] [2021-12-16 06:08:06,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:06,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:08:06,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:06,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:08:06,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:08:06,951 INFO L87 Difference]: Start difference. First operand 673 states and 950 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 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) [2021-12-16 06:08:07,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:07,251 INFO L93 Difference]: Finished difference Result 782 states and 1094 transitions. [2021-12-16 06:08:07,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:08:07,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 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 [2021-12-16 06:08:07,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:07,254 INFO L225 Difference]: With dead ends: 782 [2021-12-16 06:08:07,254 INFO L226 Difference]: Without dead ends: 780 [2021-12-16 06:08:07,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:08:07,254 INFO L933 BasicCegarLoop]: 678 mSDtfsCounter, 749 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:07,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 1135 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:08:07,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-12-16 06:08:07,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 702. [2021-12-16 06:08:07,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 586 states have (on average 1.378839590443686) internal successors, (808), 592 states have internal predecessors, (808), 84 states have call successors, (84), 24 states have call predecessors, (84), 31 states have return successors, (90), 85 states have call predecessors, (90), 77 states have call successors, (90) [2021-12-16 06:08:07,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 982 transitions. [2021-12-16 06:08:07,268 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 982 transitions. Word has length 39 [2021-12-16 06:08:07,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:07,268 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 982 transitions. [2021-12-16 06:08:07,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 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) [2021-12-16 06:08:07,269 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 982 transitions. [2021-12-16 06:08:07,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-16 06:08:07,270 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:07,270 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] [2021-12-16 06:08:07,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:07,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:07,477 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:07,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:07,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1196068657, now seen corresponding path program 1 times [2021-12-16 06:08:07,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:07,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414449952] [2021-12-16 06:08:07,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:07,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:07,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:07,483 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:07,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-16 06:08:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:07,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 06:08:07,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:07,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:07,662 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:07,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414449952] [2021-12-16 06:08:07,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414449952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:07,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:07,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:08:07,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112634130] [2021-12-16 06:08:07,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:07,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:08:07,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:07,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:08:07,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:08:07,663 INFO L87 Difference]: Start difference. First operand 702 states and 982 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) 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) [2021-12-16 06:08:07,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:07,811 INFO L93 Difference]: Finished difference Result 720 states and 1001 transitions. [2021-12-16 06:08:07,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:08:07,812 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) 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 [2021-12-16 06:08:07,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:07,814 INFO L225 Difference]: With dead ends: 720 [2021-12-16 06:08:07,814 INFO L226 Difference]: Without dead ends: 700 [2021-12-16 06:08:07,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:08:07,815 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 60 mSDsluCounter, 3061 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3690 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:07,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 3690 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:07,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-12-16 06:08:07,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2021-12-16 06:08:07,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 584 states have (on average 1.3767123287671232) internal successors, (804), 590 states have internal predecessors, (804), 84 states have call successors, (84), 24 states have call predecessors, (84), 31 states have return successors, (90), 85 states have call predecessors, (90), 77 states have call successors, (90) [2021-12-16 06:08:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 978 transitions. [2021-12-16 06:08:07,834 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 978 transitions. Word has length 40 [2021-12-16 06:08:07,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:07,834 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 978 transitions. [2021-12-16 06:08:07,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) 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) [2021-12-16 06:08:07,835 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 978 transitions. [2021-12-16 06:08:07,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-16 06:08:07,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:07,836 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] [2021-12-16 06:08:07,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:08,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:08,044 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:08,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:08,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1438594100, now seen corresponding path program 1 times [2021-12-16 06:08:08,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:08,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895407024] [2021-12-16 06:08:08,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:08,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:08,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:08,047 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:08,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-16 06:08:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:08,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 06:08:08,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:08,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:08,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:08,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895407024] [2021-12-16 06:08:08,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895407024] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:08,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:08,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:08:08,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501808164] [2021-12-16 06:08:08,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:08,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:08:08,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:08,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:08:08,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:08:08,271 INFO L87 Difference]: Start difference. First operand 700 states and 978 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:08,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:08,524 INFO L93 Difference]: Finished difference Result 1246 states and 1751 transitions. [2021-12-16 06:08:08,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:08:08,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2021-12-16 06:08:08,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:08,528 INFO L225 Difference]: With dead ends: 1246 [2021-12-16 06:08:08,528 INFO L226 Difference]: Without dead ends: 1246 [2021-12-16 06:08:08,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:08:08,529 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 547 mSDsluCounter, 3201 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 3923 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:08,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 3923 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:08:08,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2021-12-16 06:08:08,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1037. [2021-12-16 06:08:08,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 859 states have (on average 1.4016298020954598) internal successors, (1204), 883 states have internal predecessors, (1204), 126 states have call successors, (126), 41 states have call predecessors, (126), 51 states have return successors, (140), 112 states have call predecessors, (140), 119 states have call successors, (140) [2021-12-16 06:08:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1470 transitions. [2021-12-16 06:08:08,548 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1470 transitions. Word has length 43 [2021-12-16 06:08:08,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:08,548 INFO L470 AbstractCegarLoop]: Abstraction has 1037 states and 1470 transitions. [2021-12-16 06:08:08,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:08,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1470 transitions. [2021-12-16 06:08:08,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-16 06:08:08,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:08,551 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] [2021-12-16 06:08:08,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:08,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:08,758 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:08,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:08,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1615816211, now seen corresponding path program 1 times [2021-12-16 06:08:08,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:08,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408896269] [2021-12-16 06:08:08,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:08,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:08,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:08,760 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:08,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-16 06:08:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:08,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 06:08:08,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:08,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:08,915 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:08,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408896269] [2021-12-16 06:08:08,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408896269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:08,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:08,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:08:08,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064771945] [2021-12-16 06:08:08,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:08,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:08:08,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:08,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:08:08,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:08:08,918 INFO L87 Difference]: Start difference. First operand 1037 states and 1470 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 06:08:08,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:08,966 INFO L93 Difference]: Finished difference Result 1012 states and 1434 transitions. [2021-12-16 06:08:08,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:08:08,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2021-12-16 06:08:08,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:08,970 INFO L225 Difference]: With dead ends: 1012 [2021-12-16 06:08:08,970 INFO L226 Difference]: Without dead ends: 1012 [2021-12-16 06:08:08,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:08:08,972 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 9 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:08,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1234 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:08:08,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-12-16 06:08:09,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1012. [2021-12-16 06:08:09,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 837 states have (on average 1.3990442054958183) internal successors, (1171), 860 states have internal predecessors, (1171), 125 states have call successors, (125), 41 states have call predecessors, (125), 49 states have return successors, (138), 110 states have call predecessors, (138), 119 states have call successors, (138) [2021-12-16 06:08:09,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1434 transitions. [2021-12-16 06:08:09,008 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1434 transitions. Word has length 45 [2021-12-16 06:08:09,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:09,008 INFO L470 AbstractCegarLoop]: Abstraction has 1012 states and 1434 transitions. [2021-12-16 06:08:09,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 06:08:09,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1434 transitions. [2021-12-16 06:08:09,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-16 06:08:09,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:09,016 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] [2021-12-16 06:08:09,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:09,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:09,225 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:09,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:09,225 INFO L85 PathProgramCache]: Analyzing trace with hash -938217641, now seen corresponding path program 1 times [2021-12-16 06:08:09,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:09,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9875074] [2021-12-16 06:08:09,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:09,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:09,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:09,227 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:09,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-16 06:08:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:09,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 06:08:09,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:09,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:09,512 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:09,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9875074] [2021-12-16 06:08:09,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9875074] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:09,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:09,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 06:08:09,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303484967] [2021-12-16 06:08:09,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:09,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 06:08:09,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:09,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 06:08:09,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:08:09,513 INFO L87 Difference]: Start difference. First operand 1012 states and 1434 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 8 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) [2021-12-16 06:08:09,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:09,674 INFO L93 Difference]: Finished difference Result 1072 states and 1505 transitions. [2021-12-16 06:08:09,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:08:09,674 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 8 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 [2021-12-16 06:08:09,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:09,678 INFO L225 Difference]: With dead ends: 1072 [2021-12-16 06:08:09,678 INFO L226 Difference]: Without dead ends: 1060 [2021-12-16 06:08:09,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:08:09,679 INFO L933 BasicCegarLoop]: 636 mSDtfsCounter, 17 mSDsluCounter, 4938 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 5574 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:09,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 5574 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-12-16 06:08:09,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1033. [2021-12-16 06:08:09,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 856 states have (on average 1.394859813084112) internal successors, (1194), 880 states have internal predecessors, (1194), 125 states have call successors, (125), 41 states have call predecessors, (125), 51 states have return successors, (146), 111 states have call predecessors, (146), 119 states have call successors, (146) [2021-12-16 06:08:09,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1465 transitions. [2021-12-16 06:08:09,699 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1465 transitions. Word has length 43 [2021-12-16 06:08:09,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:09,700 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1465 transitions. [2021-12-16 06:08:09,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 8 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) [2021-12-16 06:08:09,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1465 transitions. [2021-12-16 06:08:09,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-16 06:08:09,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:09,703 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] [2021-12-16 06:08:09,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:09,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:09,911 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:09,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:09,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1007838826, now seen corresponding path program 1 times [2021-12-16 06:08:09,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:09,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984963895] [2021-12-16 06:08:09,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:09,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:09,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:09,913 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:09,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-16 06:08:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:10,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 06:08:10,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:10,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:10,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:10,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:10,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984963895] [2021-12-16 06:08:10,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984963895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:10,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:10,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 06:08:10,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518503879] [2021-12-16 06:08:10,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:10,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 06:08:10,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:10,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 06:08:10,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:08:10,178 INFO L87 Difference]: Start difference. First operand 1033 states and 1465 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 8 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) [2021-12-16 06:08:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:10,309 INFO L93 Difference]: Finished difference Result 1072 states and 1504 transitions. [2021-12-16 06:08:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:08:10,310 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 8 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 [2021-12-16 06:08:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:10,313 INFO L225 Difference]: With dead ends: 1072 [2021-12-16 06:08:10,313 INFO L226 Difference]: Without dead ends: 1060 [2021-12-16 06:08:10,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:08:10,314 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 21 mSDsluCounter, 4298 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4929 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:10,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 4929 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:10,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-12-16 06:08:10,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1033. [2021-12-16 06:08:10,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 856 states have (on average 1.394859813084112) internal successors, (1194), 880 states have internal predecessors, (1194), 125 states have call successors, (125), 41 states have call predecessors, (125), 51 states have return successors, (145), 111 states have call predecessors, (145), 119 states have call successors, (145) [2021-12-16 06:08:10,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1464 transitions. [2021-12-16 06:08:10,330 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1464 transitions. Word has length 44 [2021-12-16 06:08:10,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:10,330 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1464 transitions. [2021-12-16 06:08:10,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 8 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) [2021-12-16 06:08:10,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1464 transitions. [2021-12-16 06:08:10,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-16 06:08:10,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:10,333 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, 1, 1, 1, 1, 1, 1] [2021-12-16 06:08:10,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:10,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:10,540 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:10,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:10,540 INFO L85 PathProgramCache]: Analyzing trace with hash 590562129, now seen corresponding path program 1 times [2021-12-16 06:08:10,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:10,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457593987] [2021-12-16 06:08:10,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:10,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:10,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:10,542 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:10,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-16 06:08:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:10,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 06:08:10,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:10,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:10,759 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:10,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457593987] [2021-12-16 06:08:10,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457593987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:10,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:10,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 06:08:10,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390749761] [2021-12-16 06:08:10,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:10,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 06:08:10,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:10,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 06:08:10,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:08:10,760 INFO L87 Difference]: Start difference. First operand 1033 states and 1464 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:10,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:10,942 INFO L93 Difference]: Finished difference Result 1064 states and 1496 transitions. [2021-12-16 06:08:10,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:08:10,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (3), 2 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 [2021-12-16 06:08:10,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:10,946 INFO L225 Difference]: With dead ends: 1064 [2021-12-16 06:08:10,946 INFO L226 Difference]: Without dead ends: 1047 [2021-12-16 06:08:10,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-12-16 06:08:10,947 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 80 mSDsluCounter, 4981 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 5615 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:10,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 5615 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:10,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2021-12-16 06:08:10,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1031. [2021-12-16 06:08:10,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 855 states have (on average 1.3929824561403508) internal successors, (1191), 879 states have internal predecessors, (1191), 124 states have call successors, (124), 41 states have call predecessors, (124), 51 states have return successors, (144), 110 states have call predecessors, (144), 118 states have call successors, (144) [2021-12-16 06:08:10,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1459 transitions. [2021-12-16 06:08:10,982 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1459 transitions. Word has length 47 [2021-12-16 06:08:10,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:10,982 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1459 transitions. [2021-12-16 06:08:10,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:10,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1459 transitions. [2021-12-16 06:08:10,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-16 06:08:10,984 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:10,984 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] [2021-12-16 06:08:10,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:11,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:11,185 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:11,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:11,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1771938136, now seen corresponding path program 1 times [2021-12-16 06:08:11,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:11,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770246635] [2021-12-16 06:08:11,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:11,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:11,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:11,186 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:11,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-16 06:08:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:11,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 06:08:11,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:11,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:11,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:11,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770246635] [2021-12-16 06:08:11,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770246635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:11,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:11,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 06:08:11,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716907680] [2021-12-16 06:08:11,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:11,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 06:08:11,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:11,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 06:08:11,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:08:11,388 INFO L87 Difference]: Start difference. First operand 1031 states and 1459 transitions. Second operand has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:11,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:11,578 INFO L93 Difference]: Finished difference Result 1048 states and 1477 transitions. [2021-12-16 06:08:11,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:08:11,578 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (3), 2 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 [2021-12-16 06:08:11,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:11,581 INFO L225 Difference]: With dead ends: 1048 [2021-12-16 06:08:11,582 INFO L226 Difference]: Without dead ends: 1031 [2021-12-16 06:08:11,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-12-16 06:08:11,582 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 62 mSDsluCounter, 4852 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 5466 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:11,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 5466 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:11,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2021-12-16 06:08:11,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1031. [2021-12-16 06:08:11,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 855 states have (on average 1.3859649122807018) internal successors, (1185), 879 states have internal predecessors, (1185), 124 states have call successors, (124), 41 states have call predecessors, (124), 51 states have return successors, (144), 110 states have call predecessors, (144), 118 states have call successors, (144) [2021-12-16 06:08:11,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1453 transitions. [2021-12-16 06:08:11,598 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1453 transitions. Word has length 44 [2021-12-16 06:08:11,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:11,599 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1453 transitions. [2021-12-16 06:08:11,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:11,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1453 transitions. [2021-12-16 06:08:11,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-16 06:08:11,604 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:11,604 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] [2021-12-16 06:08:11,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:11,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:11,812 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:11,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:11,812 INFO L85 PathProgramCache]: Analyzing trace with hash 877591917, now seen corresponding path program 1 times [2021-12-16 06:08:11,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:11,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116632786] [2021-12-16 06:08:11,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:11,813 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:11,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:11,814 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:11,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-12-16 06:08:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:11,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 06:08:11,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:12,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:12,054 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:12,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116632786] [2021-12-16 06:08:12,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116632786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:12,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:12,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 06:08:12,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721774642] [2021-12-16 06:08:12,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:12,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 06:08:12,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:12,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 06:08:12,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:08:12,055 INFO L87 Difference]: Start difference. First operand 1031 states and 1453 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 9 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) [2021-12-16 06:08:12,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:12,223 INFO L93 Difference]: Finished difference Result 1071 states and 1493 transitions. [2021-12-16 06:08:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 06:08:12,223 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 9 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 [2021-12-16 06:08:12,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:12,226 INFO L225 Difference]: With dead ends: 1071 [2021-12-16 06:08:12,226 INFO L226 Difference]: Without dead ends: 1058 [2021-12-16 06:08:12,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-16 06:08:12,227 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 29 mSDsluCounter, 5471 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 6098 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:12,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 6098 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:12,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2021-12-16 06:08:12,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1031. [2021-12-16 06:08:12,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 855 states have (on average 1.3859649122807018) internal successors, (1185), 879 states have internal predecessors, (1185), 124 states have call successors, (124), 41 states have call predecessors, (124), 51 states have return successors, (143), 110 states have call predecessors, (143), 118 states have call successors, (143) [2021-12-16 06:08:12,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1452 transitions. [2021-12-16 06:08:12,241 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1452 transitions. Word has length 46 [2021-12-16 06:08:12,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:12,242 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1452 transitions. [2021-12-16 06:08:12,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 9 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) [2021-12-16 06:08:12,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1452 transitions. [2021-12-16 06:08:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-16 06:08:12,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:12,244 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] [2021-12-16 06:08:12,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:12,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:12,451 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:12,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:12,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1691543900, now seen corresponding path program 1 times [2021-12-16 06:08:12,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:12,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861829114] [2021-12-16 06:08:12,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:12,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:12,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:12,453 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:12,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-16 06:08:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:12,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 06:08:12,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:12,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:12,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:12,613 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:12,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861829114] [2021-12-16 06:08:12,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861829114] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:12,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:12,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:08:12,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691819480] [2021-12-16 06:08:12,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:12,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:08:12,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:12,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:08:12,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:08:12,614 INFO L87 Difference]: Start difference. First operand 1031 states and 1452 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:12,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:12,677 INFO L93 Difference]: Finished difference Result 1052 states and 1475 transitions. [2021-12-16 06:08:12,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:08:12,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 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 [2021-12-16 06:08:12,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:12,680 INFO L225 Difference]: With dead ends: 1052 [2021-12-16 06:08:12,680 INFO L226 Difference]: Without dead ends: 1052 [2021-12-16 06:08:12,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:08:12,681 INFO L933 BasicCegarLoop]: 621 mSDtfsCounter, 39 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:12,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 1798 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:12,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-12-16 06:08:12,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1033. [2021-12-16 06:08:12,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 857 states have (on average 1.3850641773628938) internal successors, (1187), 881 states have internal predecessors, (1187), 124 states have call successors, (124), 41 states have call predecessors, (124), 51 states have return successors, (143), 110 states have call predecessors, (143), 118 states have call successors, (143) [2021-12-16 06:08:12,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1454 transitions. [2021-12-16 06:08:12,695 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1454 transitions. Word has length 44 [2021-12-16 06:08:12,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:12,695 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1454 transitions. [2021-12-16 06:08:12,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:12,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1454 transitions. [2021-12-16 06:08:12,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-16 06:08:12,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:12,698 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] [2021-12-16 06:08:12,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:12,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:12,907 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:12,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:12,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1825557406, now seen corresponding path program 1 times [2021-12-16 06:08:12,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:12,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887235810] [2021-12-16 06:08:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:12,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:12,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:12,908 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:12,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-12-16 06:08:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:13,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 06:08:13,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:13,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:13,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:13,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887235810] [2021-12-16 06:08:13,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887235810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:13,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:13,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:08:13,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698222264] [2021-12-16 06:08:13,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:13,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:08:13,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:13,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:08:13,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:08:13,110 INFO L87 Difference]: Start difference. First operand 1033 states and 1454 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) [2021-12-16 06:08:13,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:13,219 INFO L93 Difference]: Finished difference Result 1051 states and 1473 transitions. [2021-12-16 06:08:13,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:08:13,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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 [2021-12-16 06:08:13,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:13,223 INFO L225 Difference]: With dead ends: 1051 [2021-12-16 06:08:13,224 INFO L226 Difference]: Without dead ends: 1031 [2021-12-16 06:08:13,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:08:13,224 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 60 mSDsluCounter, 3008 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3626 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:13,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 3626 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:13,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2021-12-16 06:08:13,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1031. [2021-12-16 06:08:13,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 855 states have (on average 1.3812865497076023) internal successors, (1181), 879 states have internal predecessors, (1181), 124 states have call successors, (124), 41 states have call predecessors, (124), 51 states have return successors, (143), 110 states have call predecessors, (143), 118 states have call successors, (143) [2021-12-16 06:08:13,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1448 transitions. [2021-12-16 06:08:13,248 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1448 transitions. Word has length 44 [2021-12-16 06:08:13,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:13,248 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1448 transitions. [2021-12-16 06:08:13,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) [2021-12-16 06:08:13,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1448 transitions. [2021-12-16 06:08:13,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-16 06:08:13,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:13,251 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] [2021-12-16 06:08:13,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:13,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:13,458 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:13,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:13,459 INFO L85 PathProgramCache]: Analyzing trace with hash 345167796, now seen corresponding path program 1 times [2021-12-16 06:08:13,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:13,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633161464] [2021-12-16 06:08:13,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:13,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:13,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:13,461 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:13,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-12-16 06:08:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:13,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 06:08:13,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:13,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:13,627 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:13,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633161464] [2021-12-16 06:08:13,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633161464] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:13,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:13,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:08:13,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845922821] [2021-12-16 06:08:13,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:13,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:08:13,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:13,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:08:13,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:08:13,628 INFO L87 Difference]: Start difference. First operand 1031 states and 1448 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:13,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:13,637 INFO L93 Difference]: Finished difference Result 1047 states and 1464 transitions. [2021-12-16 06:08:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:08:13,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (2), 1 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 [2021-12-16 06:08:13,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:13,641 INFO L225 Difference]: With dead ends: 1047 [2021-12-16 06:08:13,641 INFO L226 Difference]: Without dead ends: 1047 [2021-12-16 06:08:13,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:08:13,642 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 19 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:13,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1235 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:08:13,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2021-12-16 06:08:13,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1031. [2021-12-16 06:08:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 855 states have (on average 1.3801169590643274) internal successors, (1180), 879 states have internal predecessors, (1180), 124 states have call successors, (124), 41 states have call predecessors, (124), 51 states have return successors, (143), 110 states have call predecessors, (143), 118 states have call successors, (143) [2021-12-16 06:08:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1447 transitions. [2021-12-16 06:08:13,660 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1447 transitions. Word has length 44 [2021-12-16 06:08:13,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:13,660 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1447 transitions. [2021-12-16 06:08:13,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:13,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1447 transitions. [2021-12-16 06:08:13,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-16 06:08:13,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:13,664 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] [2021-12-16 06:08:13,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:13,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:13,873 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:13,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:13,874 INFO L85 PathProgramCache]: Analyzing trace with hash 211154290, now seen corresponding path program 1 times [2021-12-16 06:08:13,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:13,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245560746] [2021-12-16 06:08:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:13,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:13,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:13,876 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:13,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-12-16 06:08:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:14,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 06:08:14,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:14,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:14,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:14,084 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:14,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245560746] [2021-12-16 06:08:14,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245560746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:14,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:14,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:08:14,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186838689] [2021-12-16 06:08:14,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:14,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:08:14,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:14,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:08:14,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:08:14,086 INFO L87 Difference]: Start difference. First operand 1031 states and 1447 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) [2021-12-16 06:08:14,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:14,222 INFO L93 Difference]: Finished difference Result 1046 states and 1462 transitions. [2021-12-16 06:08:14,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:08:14,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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 [2021-12-16 06:08:14,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:14,225 INFO L225 Difference]: With dead ends: 1046 [2021-12-16 06:08:14,225 INFO L226 Difference]: Without dead ends: 1019 [2021-12-16 06:08:14,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:08:14,225 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 68 mSDsluCounter, 2973 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:14,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 3584 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:14,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2021-12-16 06:08:14,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 1019. [2021-12-16 06:08:14,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 846 states have (on average 1.3747044917257683) internal successors, (1163), 870 states have internal predecessors, (1163), 121 states have call successors, (121), 41 states have call predecessors, (121), 51 states have return successors, (140), 107 states have call predecessors, (140), 115 states have call successors, (140) [2021-12-16 06:08:14,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1424 transitions. [2021-12-16 06:08:14,239 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1424 transitions. Word has length 44 [2021-12-16 06:08:14,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:14,240 INFO L470 AbstractCegarLoop]: Abstraction has 1019 states and 1424 transitions. [2021-12-16 06:08:14,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) [2021-12-16 06:08:14,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1424 transitions. [2021-12-16 06:08:14,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-16 06:08:14,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:14,243 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] [2021-12-16 06:08:14,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:14,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:14,453 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:14,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:14,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1307777067, now seen corresponding path program 1 times [2021-12-16 06:08:14,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:14,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107888100] [2021-12-16 06:08:14,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:14,454 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:14,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:14,455 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:14,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-12-16 06:08:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:14,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 06:08:14,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:14,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:14,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:14,621 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:14,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107888100] [2021-12-16 06:08:14,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107888100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:14,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:14,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:08:14,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571837533] [2021-12-16 06:08:14,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:14,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:08:14,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:14,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:08:14,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:08:14,622 INFO L87 Difference]: Start difference. First operand 1019 states and 1424 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:14,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:14,754 INFO L93 Difference]: Finished difference Result 1061 states and 1498 transitions. [2021-12-16 06:08:14,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:08:14,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 2 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 [2021-12-16 06:08:14,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:14,758 INFO L225 Difference]: With dead ends: 1061 [2021-12-16 06:08:14,758 INFO L226 Difference]: Without dead ends: 1061 [2021-12-16 06:08:14,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:08:14,759 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 21 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:14,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1702 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2021-12-16 06:08:14,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1033. [2021-12-16 06:08:14,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 856 states have (on average 1.375) internal successors, (1177), 882 states have internal predecessors, (1177), 123 states have call successors, (123), 41 states have call predecessors, (123), 53 states have return successors, (154), 109 states have call predecessors, (154), 117 states have call successors, (154) [2021-12-16 06:08:14,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1454 transitions. [2021-12-16 06:08:14,776 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1454 transitions. Word has length 45 [2021-12-16 06:08:14,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:14,776 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1454 transitions. [2021-12-16 06:08:14,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:14,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1454 transitions. [2021-12-16 06:08:14,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-16 06:08:14,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:14,780 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] [2021-12-16 06:08:14,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:14,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:14,990 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:14,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:14,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1817250157, now seen corresponding path program 1 times [2021-12-16 06:08:14,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:14,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212971266] [2021-12-16 06:08:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:14,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:14,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:14,993 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:14,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-12-16 06:08:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:15,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 06:08:15,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:15,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:15,195 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:15,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212971266] [2021-12-16 06:08:15,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212971266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:15,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:15,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:08:15,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761520618] [2021-12-16 06:08:15,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:15,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:08:15,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:15,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:08:15,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:08:15,196 INFO L87 Difference]: Start difference. First operand 1033 states and 1454 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:15,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:15,291 INFO L93 Difference]: Finished difference Result 1068 states and 1530 transitions. [2021-12-16 06:08:15,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:08:15,291 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (3), 2 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 45 [2021-12-16 06:08:15,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:15,294 INFO L225 Difference]: With dead ends: 1068 [2021-12-16 06:08:15,295 INFO L226 Difference]: Without dead ends: 1049 [2021-12-16 06:08:15,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-12-16 06:08:15,296 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 60 mSDsluCounter, 4180 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 4789 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:15,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 4789 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:08:15,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2021-12-16 06:08:15,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1041. [2021-12-16 06:08:15,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 860 states have (on average 1.3732558139534883) internal successors, (1181), 890 states have internal predecessors, (1181), 123 states have call successors, (123), 41 states have call predecessors, (123), 57 states have return successors, (186), 109 states have call predecessors, (186), 117 states have call successors, (186) [2021-12-16 06:08:15,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1490 transitions. [2021-12-16 06:08:15,315 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1490 transitions. Word has length 45 [2021-12-16 06:08:15,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:15,315 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 1490 transitions. [2021-12-16 06:08:15,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:15,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1490 transitions. [2021-12-16 06:08:15,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-16 06:08:15,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:15,319 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] [2021-12-16 06:08:15,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:15,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:15,531 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:15,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:15,532 INFO L85 PathProgramCache]: Analyzing trace with hash -201116362, now seen corresponding path program 1 times [2021-12-16 06:08:15,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:15,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837011998] [2021-12-16 06:08:15,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:15,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:15,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:15,533 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:15,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-12-16 06:08:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:15,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-16 06:08:15,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:15,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:15,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:15,791 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:15,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837011998] [2021-12-16 06:08:15,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837011998] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:15,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:15,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 06:08:15,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587417805] [2021-12-16 06:08:15,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:15,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 06:08:15,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:15,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 06:08:15,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:08:15,793 INFO L87 Difference]: Start difference. First operand 1041 states and 1490 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 10 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) [2021-12-16 06:08:15,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:15,971 INFO L93 Difference]: Finished difference Result 1082 states and 1531 transitions. [2021-12-16 06:08:15,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 06:08:15,972 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 10 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 [2021-12-16 06:08:15,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:15,975 INFO L225 Difference]: With dead ends: 1082 [2021-12-16 06:08:15,975 INFO L226 Difference]: Without dead ends: 1068 [2021-12-16 06:08:15,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-12-16 06:08:15,975 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 46 mSDsluCounter, 5275 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 5880 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:15,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 5880 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:15,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-12-16 06:08:15,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1041. [2021-12-16 06:08:15,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 860 states have (on average 1.3732558139534883) internal successors, (1181), 890 states have internal predecessors, (1181), 123 states have call successors, (123), 41 states have call predecessors, (123), 57 states have return successors, (185), 109 states have call predecessors, (185), 117 states have call successors, (185) [2021-12-16 06:08:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1489 transitions. [2021-12-16 06:08:15,990 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1489 transitions. Word has length 47 [2021-12-16 06:08:15,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:15,990 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 1489 transitions. [2021-12-16 06:08:15,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 10 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) [2021-12-16 06:08:15,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1489 transitions. [2021-12-16 06:08:15,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-16 06:08:15,992 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:15,993 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] [2021-12-16 06:08:16,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-12-16 06:08:16,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:16,200 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:16,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:16,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1741355878, now seen corresponding path program 1 times [2021-12-16 06:08:16,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:16,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236951715] [2021-12-16 06:08:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:16,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:16,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:16,202 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:16,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-12-16 06:08:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:16,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-16 06:08:16,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:16,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:16,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:16,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236951715] [2021-12-16 06:08:16,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236951715] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:16,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:16,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 06:08:16,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790967746] [2021-12-16 06:08:16,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:16,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 06:08:16,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:16,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 06:08:16,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:08:16,449 INFO L87 Difference]: Start difference. First operand 1041 states and 1489 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 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) [2021-12-16 06:08:16,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:16,636 INFO L93 Difference]: Finished difference Result 1082 states and 1530 transitions. [2021-12-16 06:08:16,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 06:08:16,637 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 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 [2021-12-16 06:08:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:16,639 INFO L225 Difference]: With dead ends: 1082 [2021-12-16 06:08:16,639 INFO L226 Difference]: Without dead ends: 1068 [2021-12-16 06:08:16,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-12-16 06:08:16,640 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 46 mSDsluCounter, 5317 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 5926 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:16,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 5926 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:16,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-12-16 06:08:16,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1041. [2021-12-16 06:08:16,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 860 states have (on average 1.3732558139534883) internal successors, (1181), 890 states have internal predecessors, (1181), 123 states have call successors, (123), 41 states have call predecessors, (123), 57 states have return successors, (184), 109 states have call predecessors, (184), 117 states have call successors, (184) [2021-12-16 06:08:16,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1488 transitions. [2021-12-16 06:08:16,661 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1488 transitions. Word has length 48 [2021-12-16 06:08:16,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:16,661 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 1488 transitions. [2021-12-16 06:08:16,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 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) [2021-12-16 06:08:16,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1488 transitions. [2021-12-16 06:08:16,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-16 06:08:16,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:16,666 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] [2021-12-16 06:08:16,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-12-16 06:08:16,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:16,873 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:16,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:16,873 INFO L85 PathProgramCache]: Analyzing trace with hash -495181895, now seen corresponding path program 1 times [2021-12-16 06:08:16,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:16,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816804397] [2021-12-16 06:08:16,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:16,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:16,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:16,875 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:16,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-12-16 06:08:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:16,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-16 06:08:16,982 INFO L286 TraceCheckSpWp]: Computing forward predicates...